Product Overview
CM9 7997 Subminiature Bi-Pin Indicator Light Bulb
Condition
New old stock (NOS). Unused surplus inventory with straight bi-pin wire leads and an intact clear glass envelope. Base collar marked: 79. Sold each.
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Product Overview
CM9 7997 is a miniature bi-pin incandescent indicator lamp engineered for panel illumination, instrumentation backlighting, and optical status displays. Built with a clear tubular glass envelope and a durable teal cylindrical base collar, this lamp utilizes two rigid wire-pin terminals designed for socket insertion or direct circuit board mounting.
Key Features
- Rigid bi-pin terminal leads with 3.2 mm center-to-center pin spacing
- Cylindrical teal base collar with 5 mm outer diameter
- Clear tubular glass envelope with pointed sealed tip
- Incandescent wire filament construction
- 20 mm overall length including terminal pins; 12 mm body length
Applications
- Replacing burned-out indicator lamps in legacy avionics, marine navigation panels, and industrial control consoles
- Restoring instrument cluster backlighting and status indicators in vintage audio equipment and test gear
- Prototyping low-voltage optical indicators, model lighting, and maker electronics projects
Frequently Asked Questions
How does this lamp mount into an assembly?
This lamp features two straight wire pins protruding from the bottom of the teal base collar, designed to plug into compatible bi-pin lamp sockets or solder directly onto circuit boards.
What base style does this miniature bulb use?
The lamp uses a cylindrical teal base collar with two parallel lead pins, forming a rigid bi-pin connection.
How do I confirm this lamp matches my existing socket footprint?
Check your socket dimensions against the 3.2 mm pin spacing and 5 mm base collar diameter of this lamp. The price-break table on this page gives the price per piece at each quantity.
Old indicator lamps keep the boards honest, glowing right where a status check needs to be seen. Plug this one in and let the panel tell its story again.
