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OSRAM HBO 3500 W/MR — mercury short-arc lamp, 3.5 kW

Large-panel exposure

Rated power3500 W
Lamp voltage62 V
Lamp current56 A
Arc gap (cold)7.0 mm
Overall length290 mm
Bulb diameter70 mm
Base / connectionanode SXFc 27-8/35; cathode SFc 27-5/35 with M8 cable
Burn positionanode underneath; forced base cooling
Rated life750 h
ApplicationLarge-panel exposure
–+cathodeanodeOverall length A = 290 mmLight centre length BBulb ØD = 70 mmArc gap G = 7.0 mm
OSRAM HBO 3500 W/MR — Schematic, not to scale. Dimensions shown are the published values for this part number. The light-centre reference end differs between lamp types; confirm against the original drawing.

Need a HBO 3500 W/MR replacement?

Send the part number and your exposure tool model. We check power, base, dimensions and burn position against the original and quote within 24 hours.

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Equipment this lamp is published for

MRS Series 4500 Panel Printer

Lamps with closely matching published data

Same power class and voltage/current within a few percent. This is not a statement of interchangeability — base, cable, length and light-centre length must also match your lamphouse. Send us both part numbers and we will check.

Part numberPowerVoltageCurrentØ mmLength mm
USHIO USH-3502MA3500 W62 V56 A70324 (with nuts) / 290

Other mercury lamps of similar power

USHIO USH-3502MAOSRAM HBO 3500 W/PILOSRAM HBO 3500 W/PIOSRAM HBO 3501 W/PIOSRAM HBO 4000 W/PLOSRAM HBO 3500 W/HKAdvanced Radiation HSA-3500 TAM

Frequently asked

What is the OSRAM HBO 3500 W/MR used for?

It is a 3500 W super-high-pressure mercury short-arc lamp used for large-panel exposure, published for MRS Series 4500 Panel Printer.

Can you supply a replacement for the OSRAM HBO 3500 W/MR?

Send us the part number, a photo of the lamp label and your exposure tool model. We match power, voltage, current, base, cable, overall length and light-centre length against the original before we quote, and state warranty hours on the quote.

How often should an exposure mercury lamp be replaced?

Typical rated life for high-power lithography and exposure lamps is 500 to 2,250 hours depending on type. UV output falls and arc stability degrades with age, which shows up as longer exposure times and non-uniformity, so plan replacement at rated life.

Safety: mercury short-arc lamps are under high pressure and contain mercury. Handle with face shield and gloves, keep the protective cover on until installed, and return used lamps for mercury recycling.

Specifications as published in: OSRAM product datasheet (microlithography, other systems) (source). Older types may be discontinued by the manufacturer; data is given for identification only. Lamps supplied by Kilowatt Lamps are compatible replacements and are not made by or affiliated with OSRAM.

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