7443 LED Turn Signal Bulb 21SMD 2835 Dual Mode Projector Lamp
Optical and Circuit Design
The projector lens on this 7443 LED turn signal bulb focuses light into a controlled beam pattern that covers a wide angle without excessive scatter. The internal circuitry detects the vehicle's input signal and switches between 3W and 0.8W modes accordingly, producing a clear brightness difference between running light and turn signal functions. This contrast helps nearby drivers recognize lane-change or braking intentions more quickly, particularly in congested traffic or low-light conditions.
Specifications
| Product Name | 7443 LED turn signal bulb |
| Housing Material | Aviation-grade aluminum |
| LED Chip | 21 × 2835 SMD chips with projector lens |
| Color Temperature | 1006K (deep red) |
| Luminous Flux | High 150LM / Low 40LM |
| Dimensions | 61.5mm (H) × 17.5mm (W) |

Thermal Management and Durability
Heat is dissipated through the aluminum body, which includes integral cooling fins to draw warmth away from the 21 SMD chips. Since this 7443 LED turn signal bulb operates without a cooling fan, there are no moving parts that could fail over time. The aluminum construction also resists corrosion from moisture and road salt, which is relevant given the bulb's exposure to weather in front and rear light housings.
Commercial and Ordering Information
The product is produced in an IATF16949-certified facility, with quality control measures in place to keep defect rates low. For B2B buyers, this 7443 LED turn signal bulb is offered with flexible minimum order quantities, and the factory supports OEM/ODM packaging and branding requests. Sourcing directly from the facility removes third-party markups, and stock levels are maintained to support timely delivery to international fulfillment centers.
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