GE 28664 - 387 - 1w/28v T1.75 Low Voltage Miniature Bulb

The GE 387 is a miniature incandescent bulb primarily used for low-voltage indication in special application.

Common Applications:
Aircraft Lighting: Often used in cockpit instrument panels, annunciator lights, and sometimes for wing and tail lights in certain aircraft models.
Automotive Lighting: Can be found in various automotive indicator lights, such as dashboard indicators, audio meter lamps, and some older automotive applications.
Audio Equipment: Used as meter lamps in vintage audio equipment, including professional gear like SSL channel strips and UREI meters. Industrial and Commercial Equipment: Employed as indicator lights in various control panels and machinery.
Nurse Call Systems: Used as a replacement bulb in some nurse call systems.

Key Specifications:
Voltage: 28V (Volts)
Current: 0.04A (Amps) or 40mA (Milliamps)
Wattage: 1W (Watt)
Brightness: Typically 4 lumens
Base Type: Single Contact Midget Flanged (also known as SC Midget Flanged or SX6)
Bulb Shape: T1-3/4 (a small, tubular shape) or T1.75
Filament Type: Usually C-2F
Average Life: Around 7,000 to 10,000 hours (depending on the source)
Light Color: Clear
Dimmable: Yes, being an incandescent bulb.
Incandescent Technology: Provides a warm, yellowish light.
Flanged Base: The midget flanged base allows for secure mounting.

Brand	GE
SKU	28664
ANSI	387
Bulb Type	Miniature Bulbs
Base	SC Midget Flanged or SX6
Shape	T1-3/4 (a small, tubular shape) or T1.75
Diameter (in)	0.218
Filament	C-2F
Light Output	5 Lumens
Rated Life (Hours)	5000
Shape	T5
Voltage	28V
Wattage	1W