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Theimer TH 5717 H — UV exposure lamp replacement

Metal-halide (long-arc) lamp for PCB, screen-printing and plate exposure units, 245 mm, iron-doped (Fe). Also listed as Steag Hamatech 150D270, Alpha Cure AC 3445 and 3 more part numbers.

Power4,000 W
DopingIron-doped (Fe)
Overall length (mm)245 (US distributor catalogue); 245mm (Alpha-Cure Horizon 150D270)
Arc / lighted length (mm)156mm (Alpha-Cure Horizon 150D270)
Tube diameter (mm)28mm (Alpha-Cure Horizon 150D270)
Base / connectionRoll seal (Alpha-Cure Horizon 150D270)
Doping / spectrumFe (iron-doped)
Rated life (h)600 (US distributor catalogue typical/warranty)

Need a replacement for the Theimer TH 5717 H?

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)
TheimerTH 5717 H
Steag Hamatech150D270
Alpha CureAC 3445
GP-UV2178
Arccure150 D 270
BluetecBT 150D270

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 4100 O · 246 mmUshio MHL 5027 · 247 mmTheimer TRS 5027 · 247 mmTheimer TR 5067 · 247 mmTheimer TR 8217 · 248 mmAmergraph 10265 · 240 mmUshio MHL-153LY · 240 mmUshio MHL-33LY · 240 mm

Frequently asked

Which part numbers are listed for the same lamp as the Theimer TH 5717 H?

In published replacement-lamp catalogues the same lamp (same overall length and spectrum) is listed under 6 part numbers: Theimer TH 5717 H, Steag Hamatech 150D270, Alpha Cure AC 3445, GP-UV 2178, Arccure 150 D 270, Bluetec BT 150D270. Confirm the length, base and doping of the lamp in your unit before ordering.

Can you supply a replacement for the Theimer TH 5717 H?

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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