Best Auto-Darkening Welding Helmets: Shade, Sensors, and Optical Class

Match the process first. Shade range, sensor count, EN379 optical class, and light-to-dark time decide the helmet. The Lincoln Electric Viking 3350 is the mixed-process pick in this set: 1/1/1/1 optics, 12.5 sq in, shade 5–13, four sensors, 1/25,000 second, and a published 2-amp TIG rating. Outdoor sun points to the Miller Digital Infinity ClearLight 4x (X-Mode). The current ESAB panoramic helmet is the Sentinel A60, not the older A50. The mechanism — LCD stack, sensors, and what a dead battery actually does — is in how auto-darkening welding helmets work. If the process is still open, start with MIG vs TIG vs stick or the welder quiz.

Check Lincoln Viking 3350 price on Amazon →

Specs below are copied from manufacturer sheets checked for this refresh. Prices that follow were on the cited OEM or dealer page on 2026-10-05. Where a maker does not print a price, the figure is the dealer listing, not an estimated street price. Confirm the listing before buying. No helmet here was tested for this page.

Key specs that matter

Six published numbers sort this category.

• Optical class (EN379). Four digits, each 1 (best) to 3: optical class, diffusion of light, variation in luminous transmittance, and angle dependence. Lincoln Viking 3350 and ESAB Sentinel A60 publish 1/1/1/1. Miller’s Digital Infinity series spec sheet AY/42.5 publishes 1/1/1/2 for the ClearLight 4x. Hobart’s Inventor sheet says the helmet meets EN379 and does not print the four digits. YesWelder’s product page claims 1/1/1/1; the operator’s manual excerpt does not.
• Reaction time (light to dark). Lincoln, Miller, and Hobart publish 1/25,000 second. ESAB publishes 0.04 millisecond, which is the same interval. The YesWelder operator’s manual lists 1/10,000 second; the product page claims a time under 1/30,000 second. Use the manual figure. ANSI/ISEA Z87.1 Table 12 sets a maximum switching index that depends on the light shade and the dark shade. It is not a single “1/25,000 second” rule. That fraction is a manufacturer spec.
• Viewing area. Larger glass means less head movement to see the joint and the toes of the puddle. Lincoln publishes 3.74 × 3.34 in (12.5 sq in on the sales spec sheet). Miller publishes 13.4 sq in. ESAB publishes 4.65 × 2.80 in (118 × 71 mm). Hobart publishes 9.3 sq in. YesWelder publishes 3.93 × 3.66 in.
• Shade range. The dark range has to cover the amperage. A helmet whose dark state starts at 9 cannot be set to shade 8. Lincoln’s variable range is DIN 5–13. Miller’s weld range is 8–13, with cut shades 5–8 and a 2.5 light/grind state. ESAB’s active range is 5–13 in half steps, with passive shade 3. Hobart’s dark range is 9–13. YesWelder publishes 5–9 and 9–13.
• Sensors. All five current sheets list four arc sensors. Two-sensor helmets still exist below this set and miss arcs when one window is blocked.
• Power. These sheets use a solar assist plus a replaceable lithium cell, CR2450 on the Lincoln, Miller, ESAB, and YesWelder manuals. Hobart catalogs a CR2450 accessory (part 770284) for the Inventor series; the March 2024 quick specs do not restate the cell count.

Delay time is the other clock: how long the lens stays dark after the arc stops. Lincoln publishes 0.1–1.0 second. ESAB publishes 0.1–0.9 second. YesWelder publishes 0.1–0.8 second. Miller and Hobart publish a delay control and do not print the numeric range on the pages used here.

Choose by welding process

Process sets the minimum shade, the low-amp behavior, and whether sunlight is part of the job. MIG vs TIG vs stick is the process decision. MIG vs flux-core is the wire decision inside MIG. The welder quiz is the short path when the constraints are still mixed. Machine rankings stay on the MIG, TIG, and stick guides.

Primary work	Published spec to require	Pick in this set
MIG or flux-core, shade 9 and darker is enough	Shade 9–13, four sensors, marked to ANSI Z87.1	Hobart Inventor 770890
Largest window on a short list price	3.93 × 3.66 in, four sensors; accept the manual’s 1/10,000 s	YesWelder LYG-M800H
TIG, including a few amps	Shade down to 5, 1/25,000 s, published low-amp rating	Lincoln Viking 3350 (2 A TIG)
Outdoor arc in direct sun	Electromagnetic detection plus optical sensors	Miller Digital Infinity (X-Mode)
Long days, brightest light state	13.4 sq in, light state 2.5	Miller Digital Infinity ClearLight 4x
Wide 1/1/1/1 window, half-shade steps	4.65 × 2.80 in, shade 5–13 plus passive 3	ESAB Sentinel A60
Pipe and out-of-position	1/1/1/1 and four sensors	Lincoln Viking 3350 or ESAB Sentinel A60

MIG and stick at ordinary amperage do not need the 2-amp TIG rating. They do need a dark shade that can reach the AWS suggested number, usually 10–12. Low-amperage TIG is where shade 5–8 and a published amp floor earn their place. Sunlight false triggers are an optical-sensor problem; X-Mode is the feature in this set that addresses it.

Budget tiers

Lower list price — Hobart Inventor 770890 and YesWelder LYG-M800H. YesWelder lists the LYG-M800H at $82 for classic black, $85 for the Molten graphic, and $99 for the Rion, Berserker, and Venom graphics on yeswelder.com (page checked 2026-10-05). Hobart spec sheet 283429 does not print a price. Cyberweld listed black 770890 at $159.60 on 2026-10-05. The honest limits are on the sheets. Hobart’s dark shade starts at 9, so shade 8 is outside the range, and the four-digit EN379 class is unpublished. The window is 9.3 sq in. YesWelder’s window is the largest here, and the operator’s manual is the slow reaction time in the set (1/10,000 second) even though the product page claims a faster number. Both publish four sensors and a grind setting. A two-sensor, no-grind description does not match the current Hobart 770890 sheet.

Mid — Lincoln Viking 3350 and ESAB Sentinel A60. Both publish EN379 1/1/1/1, four sensors, and a 1/25,000-second (0.04 ms) switch. Lincoln adds shade 5–13, a 2-amp TIG rating, light state 3.5, and a five-year warranty on Viking helmets manufactured on or after 1 October 2022. ESAB adds a 4.65 × 2.80 in window, half-shade steps, passive shade 3, and shade lock. ESAB does not print a warranty term on the A60 specification table. Lincoln’s series page lists black K3034-4 at $670.82 MSRP and most graphic 3350 shells at $748 ($725 for Born To Weld). ESAB’s US shop lists part 0700600860 at $400. 3350 ADV is a different helmet.

Premium — Miller Digital Infinity ClearLight 4x. Miller’s ClearLight 4x page does not print a price. On 2026-10-05 Cyberweld listed part 296786 at $399.30 and Welder Supply listed the same part at $482.00. The published case for this helmet is the 13.4 sq in window, shade 2.5 light state, InfoTrack 2.0 (arc time and arc count), and X-Mode. Those dealer prices are not higher than Lincoln’s black-shell MSRP. The series spec sheet rates optical class 1/1/1/2. ClearLight 4x is Miller’s name for that light-state view. Digital Series owner’s manuals state a three-year warranty from the date of purchase; read the card in the current carton in case the term moved. Skip this helmet when the only target is a 1/1/1/1 class number. Lincoln and the A60 already publish it.

Shade number quick reference

AWS Fact Sheet No. 31 gives minimum protective shades and suggested comfort shades, adapted from AWS F2.2. Shade numbers are a guide and may be varied. The fact sheet’s rule of thumb: start with a shade that is too dark to see the weld zone, then go lighter until the zone is visible, without going below the minimum.

Process	Arc current	Minimum shade	Suggested shade
Stick (SMAW)	Under 60 A	7	—
Stick (SMAW)	60–160 A	8	10
Stick (SMAW)	160–250 A	10	12
Stick (SMAW)	250–550 A	11	14
MIG / flux-core (GMAW, FCAW)	Under 60 A	7	—
MIG / flux-core	60–160 A	10	11
MIG / flux-core	160–250 A	10	12
MIG / flux-core	250–500 A	10	14
TIG (GTAW)	Under 50 A	8	10
TIG (GTAW)	50–150 A	8	12
TIG (GTAW)	150–500 A	10	14

A dark range of 9–13 (Hobart) covers the suggested shades for ordinary MIG, flux-core, and stick, and it covers suggested shade 10 for TIG under 50 A. It cannot be set to the shade-8 minimum if that lighter setting is the one the puddle needs, and it has no shade 5–8 band for cutting. Lincoln’s 5–13 range and Miller’s cut band of 5–8 are the sheets that publish those lighter dark states. Plasma and air-carbon-arc shades are on the same AWS chart; use that row for the amperage in front of you rather than a single plasma number.

Lincoln Electric Viking 3350

Spec	Published value
Viewing area	3.74 × 3.34 in (95 × 85 mm); 12.5 sq in on the sales spec sheet
Variable shade	DIN 5–13
Light state	DIN 3.5
Light to dark	1/25,000 second (0.00004 s)
Dark to light	0.1–1.0 second
Optical class	1/1/1/1 (EN379), 4C lens
Sensors	4
TIG rating	2 amps
Weight	22 oz on the current product listing
Power	Solar assist, one CR2450
Grind	External grind button
UV/IR	Up to shade DIN 16 at all times, light and dark
Warranty	5 years for Viking helmets manufactured on or after 1 October 2022
Price	Lincoln MSRP $670.82 for black K3034-4. Graphic 3350 shells on the same series page are $725 (Born To Weld) or $748. Retrieved 2026-10-05

Lincoln’s product listing is the source for the 1/25,000-second switch, the 5–13 shade, the four sensors, the 2-amp TIG rating, the 22 oz weight, the single CR2450, and the five-year warranty. Operator manuals for the 3350 series add the shade 3.5 light state, the 0.1–1.0 second delay, and UV/IR protection up to DIN 16 in both states. The cartridge size on the listing is 4.5 × 5.25 in, which is the cover-plate size to buy for this shell.

The 2-amp TIG rating is the lowest published amp floor in this set. Shade 5–13 is what lets the same helmet sit on AWS shade 8 for low-amperage TIG and on shade 12–14 territory for heavier stick, up to the top of the dial at 13. Angle dependence is a 1, same as the other three EN379 digits.

The external grind button drops the lens to the 3.5 light state without a menu. At 22 oz the shell is not the lightest here. Overhead days are where that ounce shows up.

Check price on Amazon →

Fits: Fabricators who move between MIG, TIG, and stick and want the 1/1/1/1 sheet plus a published 2-amp TIG rating.

Limit: No electromagnetic arc sensor. In direct sun, optical sensors can darken on glare. That job is the Miller X-Mode row.

Miller Digital Infinity — ClearLight 4x

Spec	Published value
Viewing area	13.4 sq in
Modes	Weld 8–13, cut 5–8, grind 2.5, X-Mode 8–13
Light state	2.5
Light to dark	1/25,000 second
Optical class	1/1/1/2 on spec sheet AY/42.5
Sensors	4, plus X-Mode electromagnetic sensing
Weight	21.4 oz
Power	CR2450 lithium (manuals: two cells, part 217043), low-battery light
Grind	Yes, shade 2.5
Other	InfoTrack 2.0 (arc time, arc count), AutoSense, two memory presets, half-shades
Warranty	3 years from purchase in Digital Series manuals; confirm the card
Price	Not printed on millerwelds.com. Cyberweld listed 296786 at $399.30 on 2026-10-05. Welder Supply listed the same part at $482.00

Miller’s ClearLight 4x product page lists the 13.4 sq in field, four sensors, 1/25,000-second reaction, 21.4 oz, weld shades 8–13, and cut shades 5–8. Spec sheet AY/42.5 is the source for EN379 1/1/1/2, light state 2.5, grind 2.5, and the mode list including X-Mode. X-Mode senses the weld electromagnetically so sunlight is less likely to darken the lens, and Miller states it keeps detecting the arc when the optical sensors are blocked.

InfoTrack 2.0 is a counter, not a weld-quality meter. It records arc time and arc count. Useful for a shop that quotes by arc-on time. Irrelevant if the helmet only needs to darken.

The 2.5 light state is the brightest published light state in this set, which is the practical reason to keep the hood down between tacks. The EN379 angle-dependence digit is 2 on the series sheet. Lincoln and the A60 publish a 1 in that position.

Check price on Amazon →

Fits: All-day hood time, and any arc struck in direct sun.

Limit: Weld shades start at 8, so the dial does not offer Lincoln’s shade 5–7 band. Cut mode covers 5–8. The optical class on the series sheet is 1/1/1/2.

ESAB Sentinel A60

Spec	Published value
Viewing area	118 × 71 mm (4.65 × 2.80 in)
Shade	Passive 3; active 5–13 in 0.5 steps; shade lock
Light to dark	0.04 millisecond
Dark to light	0.1–0.9 second
Optical class	1/1/1/1 (EN379)
Sensors	4
Weight	644 g (1.4 lb)
Power	Solar assist, two CR2450
Grind	External grind button, passive shade 3
Standards	ANSI Z87.1, EN379, EN175, EN166, CSA Z94.3, ISO 16321 +TIG
Warranty	Not printed on the A60 specification table
Price	ESAB US shop $400 for part 0700600860, in stock on that page, 2026-10-05. Cyberweld listed the same part at $389 the same day

ESAB’s current Sentinel page is the A60. ESAB describes it as the successor to the Sentinel A50, with a larger window and 1/1/1/1 optics. The A60 sheet lists four sensors, not a five-sensor array, and a 0.04 millisecond light-to-dark time. That 0.04 ms figure is 1/25,000 second, the same interval Lincoln, Miller, and Hobart print as a fraction. Half-shade steps (18 active levels from 5 to 13, plus passive 3) are the adjustment the other analog dials in this set do not publish. Shade lock holds the dark state on purpose, which is a control setting, not a battery-failure mode.

The window is wide and short. Horizontal sight down a joint is the geometry ESAB is selling. Calculated area from 4.65 × 2.80 in is about 13.0 sq in; ESAB prints the dimensions, not a square-inch headline. Weight is 644 g, in the same band as Lincoln’s 22 oz listing.

If a retailer still has a Sentinel A50, that is the prior SKU. Read the A50 manual for that unit. Do not treat A60 cells in the table as A50 cells.

Check price on Amazon →

Fits: Welders who want 1/1/1/1 optics, a wide window, and half-shade steps, including low-amperage TIG under the ISO 16321 +TIG mark on the A60 certificate line.

Limit: ESAB does not print an amp-floor number comparable to Lincoln’s 2-amp TIG rating. The warranty term is not on the spec table.

Hobart Inventor 770890

Spec	Published value
Viewing area	3.94 × 2.36 in (100 × 60 mm); 9.3 sq in
Dark shade	9–13
Light state	3
Light to dark	1/25,000 second
Sensors	4
Modes	Weld and grind
Weight	19.7 oz (560 g)
Standards	ANSI Z87.1-2015, CSA, CE EN379
Warranty	2 years (spec sheet 283429, March 2024)
Low-amp TIG	Marked on the Hobart product listing
Power	Auto-on/off; CR2450 accessory 770284 is cataloged for the series
Optical class digits	Not printed (EN379 compliance is claimed)
Price	Not on spec sheet 283429. Cyberweld listed black 770890 at $159.60 on 2026-10-05

Hobart spec sheet 283429 (March 2024) is the source for the black Inventor, part 770890. Four independent sensors, grind mode, shade 9–13, light state 3, 1/25,000 second, 19.7 oz, and a two-year warranty are on that sheet. The product listing also marks the helmet low-amp TIG rated. PureColor is Hobart’s name for the lens; it is not a published 1/1/1/1 score.

Shade 9 as the floor is the real limit. Suggested AWS shades for MIG at 60–160 A (11) and stick at 60–160 A (10) sit inside 9–13. Shade 8, the AWS minimum for TIG under 150 A, does not. The 9.3 sq in window is the smallest of the five.

Check price on Amazon →

Fits: MIG, flux-core, and stick at a recognized-brand price, paired with a beginner MIG welder when the machine decision is separate. Grind mode is on the sheet.

Limit: No published four-digit optical class, a shade floor of 9, and a two-year warranty. This is the wrong row when the job needs shade 5–8 or a 1/1/1/1 sheet.

YesWelder LYG-M800H

Spec	Published value
Viewing area	3.93 × 3.66 in (100 × 93 mm)
Light state	DIN 4
Dark state	DIN 5–9 and 9–13
Grind	Shade 4 in the operator’s manual
Sensors	4
Reaction time	1/10,000 second in the operator’s manual; product page claims under 1/30,000 second
Delay	0.1–0.8 second
Optical class	1/1/1/1 on the product page; not printed in the manual excerpt
Power	Solar plus replaceable battery; manual lists CR2450
Weight	600 g in the operator’s manual
Standards	Product page and wholesale sheet cite ANSI Z87.1, EN379, CSA Z94.3; manual excerpt cites ANSI/ISEA Z87.1-2015 and CSA
List price	$82 classic black, $85 Molten, $99 Rion / Berserker / Venom (yeswelder.com, 2026-10-05)
Return	30-day return on the product page; a multi-year warranty term is not stated there

Two YesWelder documents disagree, and the manual wins on reaction time until they match. The operator’s manual lists 1/10,000 second (0.0001 second), shades 9–13 weld / 5–9 cut / 4 grind, four sensors, CR2450, and 600 g. The current product page lists a response under 1/30,000 second, optical class 1/1/1/1, UV/IR to DIN 16, and the same 3.93 × 3.66 in window with four sensors. The wholesale technical table repeats 1/1/1/1 and a response under 1/10,000 second. Third-party optical tests of this lens are not part of those documents.

The window calculates to about 14.4 sq in, the largest area in this set. That is the reason the helmet is here. The unresolved reaction-time pair, and the optical class living on the marketing page rather than the manual, is why it stays the entry row.

Check price on Amazon →

Fits: A large window for MIG and stick when the list price matters and the manual’s 1/10,000-second rating is acceptable.

Limit: Brand service history is shorter than Lincoln, Miller, ESAB, and Hobart. Headgear and shell depth show up in owner comments on YesWelder’s own page; those comments are not a lab test. Do not treat the product-page reaction time as the manual spec.

Comparison

Spec	Lincoln Viking 3350	Miller Digital Infinity	ESAB Sentinel A60	Hobart 770890	YesWelder LYG-M800H
Viewing area	12.5 sq in (3.74 × 3.34 in)	13.4 sq in	4.65 × 2.80 in	9.3 sq in	3.93 × 3.66 in
Shade	5–13; light 3.5	Weld 8–13; cut 5–8; light/grind 2.5	5–13 (0.5 steps); passive 3	9–13; light 3	5–9 / 9–13; light 4
Light to dark	1/25,000 s	1/25,000 s	0.04 ms (1/25,000 s)	1/25,000 s	1/10,000 s (manual)
EN379 class	1/1/1/1	1/1/1/2	1/1/1/1	Not printed	1/1/1/1 claimed on product page
Sensors	4	4 + X-Mode	4	4	4
Weight	22 oz	21.4 oz	644 g (1.4 lb)	19.7 oz	600 g (manual)
Power	Solar + 1× CR2450	CR2450 (manuals: two)	Solar + 2× CR2450	Auto-on; CR2450 accessory cataloged	Solar + CR2450 (manual)
Grind	Yes, 3.5	Yes, 2.5	Yes, shade 3	Yes, light 3	Yes, shade 4 (manual)
Warranty	5 years (mfg on/after 2022-10-01)	3 years in Digital Series manuals	Not on the spec table	2 years	30-day return on the product page
Price	$670.82 MSRP, black K3034-4	$399.30 Cyberweld; $482 Welder Supply	$400 ESAB shop	$159.60 Cyberweld	$82–$99 YesWelder

Lincoln and YesWelder figures are maker list prices. ESAB’s $400 is the ESAB US shop price for part 0700600860. Miller and Hobart figures are dealer listings retrieved 2026-10-05, because those sheets do not print a price. Graphic Lincoln 3350 shells on the series page are $725 or $748 MSRP. The 3350 ADV is a different helmet.

What a dead battery does

ANSI/ISEA Z87.1 section 7.2.3.2 requires an automatic welding filter, measured in its lightest state, to meet the UV and IR limits of its darkest marked shade. The test is run powered or unpowered. The UV/IR layers must be assembled so the user cannot remove them. A dead cell does not strip that UV/IR filtration.

The visible shade is a separate fact. Lincoln’s manual says the cartridge protects against UV and IR in both the dark state and the light state, up to shade DIN 16 at all times, and the troubleshooting table treats “filter does not darken when the arc is struck” as a fault whose causes include a low battery. Miller’s Digital Infinity manuals state that all shades provide continuous UV and IR protection, and they say to stop welding immediately if the lens stays light when the arc is struck. Hobart’s Inventor sheet states 100% continuous UV and IR protection. YesWelder’s product page states UV/IR protection up to DIN 16. ESAB lists the Sentinel A60 to ANSI Z87.1, the same light-state UV/IR test. None of those three sheets says a dead battery locks the visible shade dark. Use the Lincoln and Miller instruction on all five: stop if the lens stays light.

Stop. Replace the CR2450 (or the Hobart cell the manual specifies). Weld again only after the lens darkens on a test. A visible arc on a light lens can still injure, including while UV and IR are blocked. The longer explanation of the LCD stack and this failure mode is on the how it works page, and the two pages use this same rule.

Grind mode

Grind mode freezes the light state and disables arc detection. Grinding sparks are bright enough to chatter an auto lens, which is a strobe in front of the eyes. Locking shade 2.5–4 keeps the shell down for light prep.

Helmet	Grind control	Published grind / light shade
Lincoln Viking 3350	External button	3.5
Miller Digital Infinity	Mode control	2.5
ESAB Sentinel A60	External button	3
Hobart 770890	Weld/grind mode	3
YesWelder LYG-M800H	Mode control	4 (operator’s manual)

Shade 3 is not a welding shade. Switch back to the process shade before the next arc. A welding shell with grind mode is not automatically the face shield for heavy removal; the impact marking has to say so. Spatter and grinding dust on the sensor windows are a common reason a four-sensor helmet “fails” when the electronics are fine.

Fume protection and PAPR hoods

Galvanized steel, stainless, and anything with a zinc, chromium, or manganese coating is a respiratory question, not a lens question. A half-mask under the hood has to seal. ESAB’s low-profile Sentinel shell and Lincoln’s extended chin are the geometries people check first; the fit test is the respirator on the face, then the shell, under the rule in 29 CFR 1910.134. Hobart and YesWelder do not document half-mask clearance on the sheets used here.

These five helmets are not powered-air hoods. A job that requires a PAPR needs a purpose-built welding PAPR. Lincoln sells a Viking PAPR as a different product. 3M Speedglas PAPR systems sit in that category too. They are outside this shortlist on purpose.

What fails first

Cover plates fail first, and they are supposed to. The outer plate takes spatter. Pitting there looks like a bad ADF and costs a few dollars. Lincoln specifies the 4.5 × 5.25 in plates for the Viking cartridge and warns that the ADF warranty does not cover spatter damage from running without them.

Batteries are next. Miller’s low-battery light is specified as roughly two to three days of life remaining. Lincoln uses a low-battery light and a single CR2450. ESAB uses two CR2450 cells and a low-battery LED. Replace cells when the lens is slow or the indicator is on, not after a light-state arc.

The ADF cartridge is the expensive part. Lincoln, Miller (ClearLight 4x lens 296775), ESAB (ADF 0700600865), and Hobart (lens 770846) sell a shell-matched cartridge. A YesWelder cartridge has to match the LYG-M800H shell. A failed ADF with no replacement part is a new helmet.

Headgear stretch and sweat out before a quality ADF dies. Hobart 770843, Miller Legacy 290460, and ESAB Halo 0700600867 are the current replacement harnesses for those shells.

Who this is NOT for

• TIG under a few amps on the slow manual rating. The YesWelder operator’s manual lists 1/10,000 second. Lincoln publishes a 2-amp TIG rating and 1/25,000 second. Use Lincoln when the arc is that small. Machine choice stays on the TIG beginner guide.
• Anyone who needs shade 8 or lighter as a dark state, shopping the Hobart row. The 770890 dark range starts at 9.
• Outdoor arcs in direct sun, on an optical-only helmet. Miller X-Mode is the electromagnetic option in this set. The other four rely on light sensors plus a sensitivity dial.
• PAPR-required fume work. Buy a welding PAPR hood, not one of these shells with a filter taped on.
• Unmarked helmets with no ANSI/ISEA Z87.1 claim. UV/IR performance is then an unverified label. Eye protection is the wrong line to leave undocumented.

What you’ll also need

Buy consumables by shell. A Lincoln 4.5 × 5.25 in plate does not fit the Miller, ESAB, or Hobart window.

• Outer cover lens, shell-matched. Lincoln cartridge size is 4.5 × 5.25 in. Miller’s front plate is part 271320. ESAB’s A60 clear front is 0700600880. Hobart’s kit is 770858 (five outside, two inside). Lincoln-size covers on Amazon →
• Inner cover lens. It takes fumes and fine spatter on the eye side. Miller inside plate 271319; ESAB A60 inside 0700600866. Inner cover plates on Amazon →
• Replacement ADF, same shell. Miller 296775, Hobart 770846, ESAB 0700600865. Match the model before ordering a generic “auto darkening cartridge.” ADF cartridges on Amazon →
• Headgear. Hobart 770843, Miller 290460, ESAB 0700600867. Headgear on Amazon →
• CR2450 cells. That is the cell Lincoln (one), Miller (two, part 217043), ESAB A60 (two), and the YesWelder manual specify. It is not a CR2032 on these sheets. CR2450 on Amazon →
• A passive shade-10 lens as a spare plan. Fixed shade 10 covers a large share of MIG and stick suggested shades. These ADF cartridges do not accept a passive plate in place of the electronics. The spare is a second hood or a fixed-shade filter for the day the ADF will not darken, so the job can stop safely instead of continuing on a light lens. Shade 10 passive lenses on Amazon →

Process still open? The welder quiz sorts MIG, flux-core, TIG, and stick from the material, the power, and the budget. It does not pick a helmet. Come back to the table above after it does.

Frequently asked questions

What is the best auto-darkening welding helmet?

For mixed MIG, TIG, and stick work, the Lincoln Electric Viking 3350 matches the published specs that matter: EN379 1/1/1/1, a 12.5 sq in window, shade 5–13, four sensors, a 1/25,000-second switch, and a 2-amp TIG rating. Direct sun is a different job. The Miller Digital Infinity ClearLight 4x adds X-Mode electromagnetic arc detection. The current ESAB panoramic 1/1/1/1 helmet is the Sentinel A60. Lincoln lists black K3034-4 at $670.82 MSRP. ESAB’s US shop lists the A60 at $400. YesWelder lists $82 to $99. Miller and Hobart prices in the tables are dealer listings checked 2026-10-05.

What shade should I use for MIG welding?

AWS Fact Sheet No. 31, adapted from the AWS F2.2 lens shade selector, lists gas metal arc and flux-cored welding as follows: under 60 A, minimum shade 7; 60–160 A, minimum 10 and suggested 11; 160–250 A, minimum 10 and suggested 12; 250–500 A, minimum 10 and suggested 14. Start darker than the puddle requires and lighten only until the joint is visible, without going under the minimum. Shade numbers are a guide.

Are cheap auto-darkening helmets safe?

A helmet marked to ANSI/ISEA Z87.1 has to meet UV and IR limits in the light state as well as the dark state. An unmarked helmet has no such claim to check. Among marked helmets, the remaining risk is switching speed and sensor coverage. The YesWelder LYG-M800H operator’s manual lists 1/10,000 second, slower than the 1/25,000-second figure Lincoln, Miller, ESAB, and Hobart publish for the models here. That manual figure is the one to use for low-amperage TIG decisions.

How many arc sensors do I need?

Two sensors can miss an arc when the joint, the torch, or an arm covers one window. Four sensors overlap those angles. Lincoln, Miller, ESAB Sentinel A60, Hobart Inventor 770890, and YesWelder LYG-M800H each publish four sensors on the current manufacturer sheet. Four sensors do not fix a dead battery or a sensitivity dial set too low.

What is grind mode on a welding helmet?

Grind mode locks the lens in the light state and turns arc detection off so grinding sparks do not strobe the filter. Published light or grind shades in this set are Lincoln 3.5, Miller 2.5, ESAB Sentinel A60 passive 3, Hobart 3, and YesWelder 4 in the operator’s manual. Grind mode is a welding-helmet convenience. Confirm the impact rating before using the shell as the only shield for heavy grinding.

What happens if the welding helmet battery dies?

ANSI/ISEA Z87.1 requires the UV and IR filter, measured in the lightest state and even unpowered, to meet the UV and IR limits of the darkest marked shade. That filter is not user-removable. Lincoln states UV/IR protection up to shade DIN 16 at all times, in both light and dark states. Miller states that all shades provide continuous UV and IR protection, and says to stop immediately if the lens stays light when the arc is struck. A dead battery can leave the visible shade light. UV and IR filtration remains. The visible arc does not. Stop and replace the cell.

Is the ESAB Sentinel A50 or the A60 the current helmet?

ESAB’s current Sentinel product page is the A60, the larger-view successor to the A50. The A60 sheet lists a 4.65 by 2.80 in window, EN379 1/1/1/1, four sensors, shade 3/5–13 in half steps, and a 0.04 millisecond light-to-dark time. If a seller still offers an A50, read that unit’s manual. This page uses the A60.

Related

• How auto-darkening welding helmets work — LCD stack, sensors, EN379 digits, and the battery rule on this page
• MIG vs TIG vs stick — pick the process before the helmet
• MIG vs flux-core — wire and gas, which set the shade row
• Welder quiz — six questions when the process is still open
• Best MIG welders for beginners and best TIG welders for beginners — machines, not a second helmet ranking

Sources

• Lincoln Electric, Viking 3350 series product listing (viewing area 3.74 × 3.34 in, DIN 5–13, 1/25,000 s, four sensors, 22 oz, one CR2450, grind button, 2-amp TIG rating, five-year warranty) and Viking 3350 operator manuals (light state DIN 3.5, delay 0.1–1.0 s, UV/IR up to DIN 16 at all times, low-battery troubleshooting)
• Lincoln Electric press release, August 2023: five-year warranty on Viking auto-darkening helmets manufactured on or after 1 October 2022
• Miller Electric, Digital Infinity ClearLight 4x product page (13.4 sq in, 1/25,000 s, four sensors, 21.4 oz, weld 8–13, cut 5–8, X-Mode, InfoTrack 2.0) and Digital Infinity series spec sheet AY/42.5 (EN379 1/1/1/2, light state 2.5, grind 2.5)
• Miller Digital Infinity owner’s manuals: continuous UV and IR protection at all shades; stop welding if the lens does not darken; CR2450 batteries; Digital Series warranty stated as three years from purchase
• ESAB Sentinel A60 product page, esab.com (118 × 71 mm, 1/1/1/1, four sensors, 0.04 ms, shade 3/5–13, two CR2450, 644 g, ANSI Z87.1)
• Hobart Inventor series spec sheet 283429, March 2024, black helmet 770890 (9.3 sq in, shade 9–13, light state 3, 1/25,000 s, four sensors, weld and grind, 19.7 oz, two-year warranty, ANSI Z87.1-2015)
• YesWelder LYG-M800H product page (yeswelder.com, checked 2026-10-05) and LYG-M800H operator’s manual Section 2
• Lincoln Electric VIKING 3350 series page, retrieved 2026-10-05: black K3034-4 MSRP $670.82; Born To Weld K3616-4 $725; most graphic 3350 shells $748. https://www.lincolnelectric.com/en/Products/Safety/Head-Face-and-Eye/Welding-Helmets-and-Accessories/VIKING-3350-Series
• ESAB US shop, Sentinel A60 0700600860, retrieved 2026-10-05: $400.00, in stock. https://shopus.esab.com/sentinel-a60
• Cyberweld, ESAB 0700600860, retrieved 2026-10-05: $389.00 (manufacturer industrial price labeled $573.90). https://store.cyberweld.com/products/esab-sentinel-a60-welding-helmet-0700600860
• Miller product page for 296786, retrieved 2026-10-05: no price. Cyberweld listed 296786 at $399.30 (manufacturer industrial price labeled $513.87). Welder Supply listed 296786 at $482.00. https://store.cyberweld.com/products/miller-black-digital-infinity-clearlight-4x-welding-helmet-296786 and https://www.weldersupply.com/P/55794/MillerDigitalInfinityWeldingHelmetBlackClearLight4x
• Cyberweld, Hobart 770890, retrieved 2026-10-05: $159.60 (manufacturer industrial price labeled $219.65). Spec sheet 283429 does not print a price. https://store.cyberweld.com/products/hobart-inventor-purecolor-welding-helmet-black-770890
• ANSI/ISEA Z87.1, sections 7.2.3.2 (UV/IR transmittance in the lightest state, powered or unpowered) and 7.2.3.3 / Table 12 (switching index)
• AWS Safety and Health Fact Sheet No. 31, Eye and Face Protection for Welding and Cutting Operations, lens shade selector adapted from AWS F2.2