LED

Q:What defines the physical structure of 2835 LED?

A:Key features include:
- Leadless bottom-mounted pads: Ensures stable PCB contact.
- Central thermal pad: 80% coverage for efficient heat dissipation.
- 2-pin layout: Linear arrangement for simplified circuit design.
- Ultra-thin profile: 0.65 mm height for space-constrained applications.

Q:Why choose 2835 LED over alternatives?

A:Critical advantages:
- Miniaturization: 30% smaller footprint than 3528 LEDs.
- Thermal Performance: Direct copper substrate heat path reduces junction temperature by 15%.
- Electrical Benefits: Low forward voltage (2.8V typ.) for energy efficiency.
- Reliability: Silicone encapsulation withstands 85°C/85% RH humidity.

Q:What are common technical specs?

A:Standard configurations (consult datasheets):
- Body Size: 2.8 × 3.5 mm
- Height: 0.65 mm
- Pin Pitch: 1.4 mm
- Material: Copper-alloy leads with PPA plastic housing.
- Temp Range: -40°C to +105°C.

Q:Where is 2835 LED typically applied?

A:Dominant use cases:
- Backlighting: LCD TVs (e.g., Samsung/LG panels).
- General Lighting: LED bulbs (e.g., Philips Hue).
- Automotive: Interior lighting (e.g., dashboard backlight).

Q:What are critical assembly guidelines?

A:Key recommendations:
- PCB Design: Thermal vias (≥4) under pad for heat dissipation.
- Solder Paste: Type 3 SAC305 recommended for void control.
- Reflow Profile: Peak temp ≤ 250°C (Pb-free process).
- Inspection: AXI (Automated X-ray) to verify solder joint integrity.