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Theimer TR 6227 — UV exposure lamp replacement

Metal-halide (long-arc) lamp for PCB, screen-printing and plate exposure units, 215 mm, iron-doped (Fe). Also listed as Theimer TH 6227.

Power4,060 W
DopingIron-doped (Fe)
Overall length (mm)215 (US distributor catalogue); 217mm (Alpha-Cure Theimer TH 6227)
Arc / lighted length (mm)120mm (Alpha-Cure Theimer TH 6227)
Tube diameter (mm)28mm (Alpha-Cure Theimer TH 6227)
Base / connectionPinch seal (Alpha-Cure Theimer TH 6227)
Doping / spectrumFe (iron-doped)
Rated life (h)600 (US distributor catalogue typical/warranty)

Need a replacement for the Theimer TR 6227?

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)
TheimerTR 6227 · TH 6227

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 TR 4147 · 216 mmTheimer TR 2027 · 218 mmUshio MHL-8027S · 210 mmUshio MHL-6027S · 210 mmUshio MHL 4000 · 220 mmUshio MHL 4007 · 230 mmTheimer TH 5007 · 191 mmAmergraph 10265 · 240 mm

Frequently asked

Which part numbers are listed for the same lamp as the Theimer TR 6227?

In published replacement-lamp catalogues the same lamp (same overall length and spectrum) is listed under 2 part numbers: Theimer TR 6227, Theimer TH 6227. Confirm the length, base and doping of the lamp in your unit before ordering.

Can you supply a replacement for the Theimer TR 6227?

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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