Product Specifications

The T3W Black Base 12V 0.56W is a low-power cylindrical halogen bulb, featuring a compact structure and stable indicator lighting performance. It is widely used in small-scale equipment and special lighting scenarios.

1. Core Specifications

   • Voltage & Power: Rated operating voltage is 12V and rated power is 0.56W. It is a low-voltage, low-power-consumption product with low energy consumption, suitable for DC low-voltage circuits.

   • Model Definition: "T3" means the bulb is cylindrical with a diameter of 3/8 inch (about 9.5mm); "W" generally refers to the wire-lead structure; "Black Base" refers to the black-colored base. Compared with ordinary light-colored bases, it has better high-temperature resistance and light-shielding performance, which can reduce the interference of base reflection on lighting effects.

   • Luminous Principle: It works based on the halogen cycle reaction. When the tungsten filament is energized to heat up and emit light, the evaporated tungsten atoms combine with the halogen gas inside the bulb, and then deposit back on the tungsten filament after cooling, slowing down the tungsten filament loss and extending the service life.

2. Structural FeaturesThe bulb is usually equipped with two rigid electrode leads at the base, which can be directly soldered or plugged into the circuit without an additional lamp holder. The black base is made of high-temperature-resistant insulating materials, which can not only fix the leads but also isolate high temperatures, improving the safety of use.

3. Application ScenariosDue to its characteristics of low voltage, low power consumption and small size, it is commonly used in automotive dashboard backlights, household appliance indicator lights, precision instrument status lights, model decorative lights and small emergency indicator lights.

4. Advantages & Disadvantages

   • Advantages: Excellent color rendering (close to natural light) with soft and warm light; instant start-up without delay, lighting up immediately after power-on; the black base has good light-shielding performance, suitable for scenarios with high requirements for light directionality.

   • Disadvantages: Lower luminous efficiency than LED lamps, with higher power consumption under the same brightness; the tungsten filament generates high temperature during operation, making the bulb shell hot, so it is necessary to avoid contact with flammable materials; shorter service life than LED lamps, generally several hundred hours.