Product Overview
Osram 54121 64617 SPOT Photo-Optic Halogen Lamp - 75W 12V G5.3-4.8
The Osram 54121 64617 SPOT Photo-Optic Halogen Lamp - 75W 12V G5.3-4.8 is an OSRAM specialty photo-optic halogen lamp used in professional projection, microfilm, microscope, studio, medical, fiber-optic, and entertainment equipment. This lamp should be selected by matching the ordering abbreviation, wattage, voltage, base, bulb shape, and rated life to the existing lamp or equipment manual.
This product is listed with 75W, 12V, G5.3-4.8 base, MR11 bulb shape, Not Listed lumens, and 25 hour rated average life. It is intended for specialized optical systems where correct fit and light output are critical.
Wattage 75W Halogen | Voltage 12V Rated | Base G5.3-4.8 Socket | Lumens Not Listed Output | Life 25 hrs Avg. |
Product Overview
OSRAM photo-optic halogen lamps are designed for equipment where optical alignment, color stability, and lamp geometry matter. These lamps are commonly used in projectors, microfilm readers, microscopes, studio fixtures, medical illumination, fiber-optic illuminators, enlargers, printers, and entertainment lighting.
Technical Specifications
| Brand | OSRAM |
| Product Number | 54121 |
| ANSI / Code | Not Listed |
| Ordering Abbreviation | 64617 SPOT |
| Primary Application | Projector |
| Wattage | 75W |
| Voltage | 12V |
| Base Type | G5.3-4.8 |
| Bulb Shape | MR11 |
| Lumens | Not Listed |
| Color Temperature | Not Listed |
| Rated Average Life | 25 hours |
| Package Quantity | 20 |
| Mercury Content | Mercury-free tungsten halogen lamp |
Compatible Applications
- Projectors and slide projection systems
- Microfilm and microfiche readers
- Microscopes and laboratory illuminators
- Studio, theatre, TV, and video lighting equipment
- Medical and dental illumination systems where specified
- Fiber-optic illuminators and optical equipment
Helpful Buying Notes
- Replacement Accuracy: Match the ordering abbreviation, wattage, voltage, base, and bulb shape before ordering.
Before Ordering Verify
- Ordering Code: Match OSRAM 54121 / 64617 SPOT to the existing lamp or equipment manual.
- Voltage: Confirm the equipment is rated for 12V operation.
- Wattage: Confirm the fixture or instrument is rated for 75W.
- Base: Confirm the socket accepts G5.3-4.8 lamps.
- Bulb Shape: Confirm the MR11 bulb shape and physical clearance.
- Life vs Output: Long-life versions may produce fewer lumens, while high-output versions may have shorter life.
Safety & Installation Guidelines
- Use Approved Fixtures: Install only in equipment designed for this lamp type, wattage, voltage, and base.
- Do Not Touch Quartz: Use clean gloves or a lint-free cloth to prevent oil contamination and premature lamp failure.
- Disconnect Power: Turn off and unplug equipment before replacing the lamp.
- Allow Cooling: Let the lamp and fixture cool completely before handling.
- Optical Alignment: Seat the lamp correctly to maintain proper focus, beam position, and equipment performance.
Wholesale & Project Support
ADL Supply supports schools, labs, AV departments, medical facilities, maintenance teams, and commercial buyers with OSRAM photo-optic lamp sourcing, replacement identification, and volume order support.
For volume pricing, availability, or help confirming the correct OSRAM replacement lamp, contact ADL Supply at 1-800-235-3489.
