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Theimer TRS 4027 — UV exposure lamp replacement

Metal-halide (long-arc) lamp for PCB, screen-printing and plate exposure units, 145 mm, iron-doped (Fe). Also listed as Theimer 822497, Theimer THS 4027 and 3 more part numbers.

Power2,070 W
DopingIron-doped (Fe)
Overall length (mm)145 (US distributor catalogue); 145mm (Alpha-Cure Theimer THS4027)
Arc / lighted length (mm)53mm (Alpha-Cure Theimer THS4027)
Tube diameter (mm)26mm (Alpha-Cure Theimer THS4027)
Base / connectionPinch seal (Alpha-Cure Theimer THS4027)
Doping / spectrumFe (iron-doped)
Rated life (h)600 (US distributor catalogue typical/warranty)

Need a replacement for the Theimer TRS 4027?

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.

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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.

BrandPart number(s)
TheimerTRS 4027 · 822497 · THS 4027
SPG Prints4027
Stork192000005
AmbaAM 608 XS

Equipment this lamp is listed for

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.

Theimer TRS 4027 O · 145 mmNuArc PD 27 · 146 mmAmergraph V 28 12.00 SE · 147 mmUshio MHL 3005 · 132 mmTheimer TRS 3007 · 132 mmTheimer TRS 2117 · 132 mmUshio MHL 1403 · 175 mmNuArc R 6074 · 178 mm

Frequently asked

Which part numbers are listed for the same lamp as the Theimer TRS 4027?

In published replacement-lamp catalogues the same lamp (same overall length and spectrum) is listed under 6 part numbers: Theimer TRS 4027, Theimer 822497, Theimer THS 4027, SPG Prints 4027, Stork 192000005, Amba AM 608 XS. Confirm the length, base and doping of the lamp in your unit before ordering.

Can you supply a replacement for the Theimer TRS 4027?

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.

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