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Olec L1281 — UV exposure lamp replacement

Metal-halide (long-arc) lamp for PCB, screen-printing and plate exposure units, 248 mm. Also listed as Theimer TR 8227, Fabcon L1281 and 11 more part numbers.

Power8,000 W (published figures differ between sources — confirm on the label)

Overall length (mm)248 (US distributor catalogue); 247mm MOL (Ushio); 248mm (Alpha-Cure Theimer MHL281L); 244mm (Alpha-Cure Amba AM1681X)

Arc / lighted length (mm)127mm lighted length (Ushio); 117mm (Alpha-Cure Theimer MHL281L); 148mm (Alpha-Cure Amba AM1681X)

Tube diameter (mm)28mm (Ushio); 28mm (Alpha-Cure Theimer MHL281L); 28mm (Alpha-Cure Amba AM1681X)

Base / connectionCeramic base, Spade Tongue contact (Ushio); Pinch seal (Alpha-Cure Theimer MHL281L); Pinch seal (Alpha-Cure Amba AM1681X)

Doping / spectrumUS distributor catalogue spectrum code 'Red' (dopant not stated); Ushio: 300-450nm Multi-Spectrum

Rated life (h)600 (US distributor catalogue typical/warranty); 500 average (Ushio)

Need a replacement for the Olec L1281?

Send the part number, a photo of the old lamp and your exposure unit model. We check length, base, doping and power and quote within 24 hours.

Quote on WhatsApp Quote form

Part numbers listed for this lamp

The same lamp — same overall length and spectrum — appears under all of these numbers in published replacement-lamp catalogues. Brand names identify the original part only.

Brand	Part number(s)
Olec	L1281
Theimer	TR 8227 · TH 8227
Fabcon	L1281
Kawa	H.0512
BLV	MHL 281 L · 25290641
Ushio	25290641 · 5000092 · MHL-281L
Heraeus	45002204
Alpha Cure	ACP-1791
Cure UV	191142
Amba	AM 1681 X

Equipment this lamp is listed for

For AL83-96 units 2000W - 8000W

Other exposure lamps with the same doping and similar length

Shown for navigation only — a lamp only fits if length, base and doping all match your unit.

Olec AL 83 · 248 mm Olec L1282 · 248 mm Olec L1261 · 190 mm Olec L 1250 · 190 mm Olec L 1252 · 190 mm

Frequently asked

Which part numbers are listed for the same lamp as the Olec L1281?

In published replacement-lamp catalogues the same lamp (same overall length and spectrum) is listed under 14 part numbers: Olec L1281, Theimer TR 8227, Fabcon L1281, Kawa H.0512, BLV MHL 281 L, BLV 25290641, Ushio 25290641, Theimer TH 8227, Heraeus 45002204, Alpha Cure ACP-1791, Cure UV 191142, Ushio 5000092, Amba AM 1681 X, Ushio MHL-281L. Confirm the length, base and doping of the lamp in your unit before ordering.

Can you supply a replacement for the Olec L1281?

Yes — send the part number on your old lamp, a photo of its label and ends, and your exposure unit model. We check overall length, base, doping and power against the original before we quote, and quote within 24 hours.

Why does the doping matter?

The metal added to the mercury fill (iron, gallium or none) sets which UV and violet wavelengths the lamp emits. Your dry film, solder mask, screen emulsion or printing plate is sensitised to particular wavelengths, so the replacement should carry the same doping as the original.

Safety: metal-halide exposure lamps contain mercury and emit strong UV. Never run one outside its housing, wear UV-blocking eye protection when servicing, handle with gloves, and return used lamps for mercury recycling.

Specifications and cross-references compiled from published lamp-maker data (Ushio, Alpha-Cure) and a US replacement-lamp distributor's catalogue. Where sources differ the values are shown side by side. Data is given for identification only — verify against your unit's manual. Lamps supplied by Kilowatt Lamps are compatible replacements and are not made by or affiliated with the brands named.