Philips DDL 150W 20V Halogen Reflector Lamp | 20V 150W GX5.3 | Medical / Projection

The Philips DDL 150W 20V (Order Code 923921419794) is a precision dichroic halogen reflector lamp delivering 150W at 20V with a GX5.3 cap. Dichroic coating dissipates ~75% of generated heat backwards, keeping optical systems within temperature limits. CRI 100, dimmable, quartz-UV open bulb. Dichroic halogen reflector. Medical endoscopy, projection systems, fiber optic illumination.

Voltage

20V

Wattage

150W

Lumens

N/A

Color Temp

3150 K

Quick Specs

Brand: Philips Lighting
Order Code: 923921419794
Full Product Name: DDL 150W 20V 24PK
Cap/Base: GX5.3
Voltage: 20V
Wattage: 150W
Diameter D (max): 50.7 mm
Length C (max): 44.5 mm
Bulb Shape: R50
Burning Position: S105
Color Temperature (nom): 3150 K
Luminous Flux: N/A
CRI: 100
Dimmable: Yes
Bulb Material: Quartz-UV Open

Key Features

Dichroic coating dissipates ~75% of heat backwards – protects optical system
Precisely aligned burner – no re-alignment needed on replacement
CRI 100 – identical to natural sunlight for perfect colour rendering
Stable lumen output throughout lifetime – virtually no lumen depreciation
Blue-filter version available (blocks >700 nm) for dental curing applications
Distortion-free quartz bulb for optimal optical performance

Applications

Medical endoscopy & industrial endoscopy
Fiber optic illumination systems
Dental curing
Projection systems & microfiche
Spectrography & scientific illumination

Cross-Reference Part Numbers

GE / Tungsram: 43537 DDL
Sylvania / Osram: 54660 DDL
Ushio: JCR20V-150W (1000173)

Important Safety & Installation Notes

Enclosed Fixtures Only: Must be used in approved, fully enclosed halogen fixtures. Do not use in open or unshielded housings.
No Bare Hands: Never touch the bulb envelope with bare skin. Oils cause hot spots leading to premature failure. Use clean gloves or a lint-free cloth.
Do Not Exceed Rated Voltage: Operating above rated voltage dramatically shortens lamp life. Verify your equipment transformer output before installing.
Extreme Heat Warning: This lamp operates at very high temperatures. Never touch when lit or recently switched off. Keep away from combustibles.
Fragile: Quartz halogen lamps are sensitive to vibration and impact. Inspect the envelope for cracks before installation.