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Ushio MHL 5000 — UV exposure lamp replacement

Metal-halide (long-arc) lamp for PCB, screen-printing and plate exposure units, 185 mm, gallium-doped (Ga). Also listed as Heraeus 45000799, Heraeus 45006057 and 22 more part numbers.

Power5,000 W (published figures differ between sources — confirm on the label)
DopingGallium-doped (Ga)
Overall length (mm)185 (US distributor catalogue); 190mm MOL (Ushio); 180mm (Alpha-Cure Parker HPM3000); 180mm (Alpha-Cure BLV MHL5000)
Arc / lighted length (mm)102mm lighted length (Ushio); 80mm (Alpha-Cure Parker HPM3000); 80mm (Alpha-Cure BLV MHL5000)
Tube diameter (mm)28mm (Ushio); 28mm (Alpha-Cure Parker HPM3000); 28mm (Alpha-Cure BLV MHL5000)
Base / connectionCeramic base, AMP Connector contact (Ushio); Pinch seal (Alpha-Cure Parker HPM3000); Pinch seal (Alpha-Cure BLV MHL5000)
Doping / spectrumGa (gallium-doped); Ushio: 400-450nm Diazo
Rated life (h)600 (US distributor catalogue typical/warranty); 500 average (Ushio)

Need a replacement for the Ushio MHL 5000?

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)
UshioMHL 5000
Heraeus45000799 · 45006057 · Q 4128 Z1 · RQ 4127 Z1 KC
TheimerTR 5000 · TH 5000
SylvaniaMO 42 · MO 28.3 · MO 26
StaubUltralux 5000
Sixt5002
Sack200 215
PhilipsHPM 3000
Klimsch659 7340 · 5000 W OL
Degra85393290
BLVMHL 5000
Bacher56066650 · 56033083 · 3081
AmbaAM 689 X · AM 610 X
AktiluxAL 5000 · AKT 6200

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 5230 · 185 mmUshio MHL 5000 S · 185 mmUshio MHL-121 HT · 181 mmUshio MHL 17 · 190 mmTheimer TR 3020 · 190 mmNuArc HT 121 GA · 180 mmAmergraph HID 10266 A · 180 mmUshio MHL 2000/1 · 178 mm

Frequently asked

Which part numbers are listed for the same lamp as the Ushio MHL 5000?

In published replacement-lamp catalogues the same lamp (same overall length and spectrum) is listed under 25 part numbers: Ushio MHL 5000, Heraeus 45000799, Heraeus 45006057, Theimer TR 5000, Sylvania MO 42, Sylvania MO 28.3, Sylvania MO 26, Staub Ultralux 5000, Sixt 5002, Sack 200 215, Philips HPM 3000, Klimsch 659 7340, Klimsch 5000 W OL, Heraeus Q 4128 Z1, Heraeus RQ 4127 Z1 KC, Degra 85393290, BLV MHL 5000, Bacher 56066650, Bacher 56033083, Bacher 3081, Amba AM 689 X, Amba AM 610 X, Aktilux AL 5000, Aktilux AKT 6200, Theimer TH 5000. Confirm the length, base and doping of the lamp in your unit before ordering.

Can you supply a replacement for the Ushio MHL 5000?

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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