4-LEAD MODULE

Q:What defines the physical structure of the 4-LEAD MODULE?

A:Key features include:
- Leadless bottom-mounted pads: Ensures stable PCB attachment.
- Central thermal pad (80% coverage): Enhances heat dissipation.
- 4-pin layout with dual-side symmetry: Optimizes space and routing.
- 1.0 mm ultra-thin profile: Ideal for compact designs.

Q:Why choose the 4-LEAD MODULE over alternatives?

A:Critical advantages:
- Miniaturization: 30% smaller than SOP-8 packages.
- Thermal Performance: Direct PCB heat path reduces junction temperature by 15%.
- Electrical Benefits: Low-inductance design (<1 nH) for high-frequency stability.
- Reliability: Moisture-resistant (MSL3) substrate for harsh environments.

Q:What are common technical specs?

A:Standard configurations (consult datasheets):
- Body Size: 3.0 × 3.0 mm
- Height: 1.0 mm
- Pin Pitch: 0.65 mm
- Material: Copper-alloy leads with Ni/Pd/Au plating
- Temp Range: -40°C to +125°C

Q:Where is the 4-LEAD MODULE typically applied?

A:Dominant use cases:
- Power Converters: Buck/boost ICs (e.g., TPS61021).
- RF Modules: Bluetooth/Wi-Fi transceivers (e.g., CC2541).
- Sensor Interfaces: MEMS pressure sensors (e.g., BMP280).

Q:What are critical assembly guidelines?

A:Key recommendations:
- PCB Design: 4×4 thermal vias under central pad (0.3 mm diameter).
- Solder Paste: Type 4 solder (5–15 µm particle size).
- Reflow Profile: Peak temp ≤ 245°C (Pb-free process).
- Inspection: X-ray (AXI) mandatory for void detection.