Product Overview

Halco 107718 Prism 12V 10W T3 Halogen Lamp - BA15S Single Contact Bayonet Base
The Halco 107718 Prism series is a long-life T3 miniature halogen lamp featuring a BA15S single contact bayonet base. Operating at 12 volts and 10 watts, this JC type bulb delivers 120 lumens of crisp white light with an exceptional 10,000-hour average rated life. Utilizing an advanced halogen-xenon gas mix, the Prism series maintains over 90% lumen output throughout its lifespan, making it ideal for hard-to-reach landscape, cabinet, and display lighting applications.
Technical Specifications - Halco Prism 107718
| Manufacturer Part Number | 107718 |
|---|---|
| Product Series | Prism Long Life Halogen |
| Bulb Type | T3 Miniature Bi-Pin / JC Lamp |
| Base Type | BA15s (Single Contact Bayonet) - 15mm Diameter |
| Voltage | 12 Volts (Low Voltage) |
| Wattage | 10 Watts |
| Filament Design | C-8 |
| Initial Lumens | 120 lm |
| Color Temperature | 2700K-3000K Warm White |
| Maximum Overall Length (MOL) | 1.50 inches (38.1mm) |
| Bulb Finish | Clear |
| Average Rated Life | 10,000 Hours |
| Gas Fill | Halogen-Xenon Mix |
| Operating Position | Universal (Any) |
Halco Prism Series Technology
Advanced Gas Mix
Unique halogen and xenon gas combination provides whiter light and longer life compared to standard halogen lamps.
Lumen Maintenance
Maintains over 90% light output throughout the entire 10,000-hour rated life, reducing degradation common in standard bulbs.
5x Life Rating
Up to 5 times the rated life of standard halogen JC lamps, drastically reducing relamping labor costs in commercial installations.
Recommended Applications
- Under Cabinet Lighting: Low profile T3 design fits compact puck lights and linear fixtures
- Landscape Lighting: 12V compatibility with outdoor low-voltage systems; 10,000-hour life reduces maintenance in hard-to-access fixtures
- Automotive & Marine: BA15S single contact bayonet base fits standard marker lights, reading lamps, and accent fixtures
- Display & Retail: Consistent white light output perfect for jewelry cases, museum exhibits, and showcase lighting
- RV & Camper Lighting: 12V DC operation ideal for recreational vehicle interior and exterior fixtures
- Task & Accent Lighting: Compact source for directed illumination in residential and commercial spaces
Compatible Base Types & Equivalents
The Halco Prism series 107718 uses a BA15S single contact bayonet base (15mm diameter with single central contact). Also known as:
- 107718 (Halco OEM Number)
- BA15S Base 12V 10W
- SCC Bayonet (Single Contact Center)
- 1156 base style (automotive cross-reference)
Prism Series Voltage/Wattage Variants Available:
- G4 Base: 10W, 20W, 35W, 50W (6V, 12V, 24V)
- G6.35 Base: 10W, 20W, 35W, 50W (6V, 12V, 24V)
- BA15S Base: 10W, 20W variants (12V, 24V systems)
Frequently Asked Questions
What is the difference between BA15S and BA15D bases?
The Halco 107718 uses a BA15S (Single Contact Bayonet) base with one central contact pin. BA15D (Double Contact) has two offset pins. These are not interchangeable. Verify your fixture requires the single contact (SCC) version before ordering. BA15S is common in automotive and 12V landscape lighting.
Can I use this 12V lamp in a 120V household fixture?
No. This is a low voltage 12V halogen lamp requiring a transformer. Operating at 120V will destroy the lamp instantly. Use only in 12V DC or 12V AC systems such as landscape lighting transformers, automotive electrical systems, or low-voltage indoor fixtures with compatible magnetic or electronic transformers.
How does the Prism series compare to standard halogen lamps?
Halco's Prism series utilizes a proprietary halogen-xenon gas mixture that extends average life to 10,000 hours compared to 2,000 hours for standard halogen JC lamps. This represents up to 5x longer service life, significantly reducing labor costs for commercial relamping in hard-to-access fixtures like high ceilings and embedded landscape lighting.