TQFP144
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Q:What defines the physical structure of TQFP144?
A:Key features include:
- 144-pin layout with peripheral lead arrangement
- Leadless bottom-mounted pads for compact PCB integration
- Central thermal pad (10×10 mm coverage) for enhanced heat dissipation
- 1.0 mm ultra-thin profile for space-constrained designs -
Q:Why choose TQFP144 over alternatives?
A:Critical advantages:
- Miniaturization: 30% smaller footprint than QFP144 with similar pin count.
- Thermal Performance: Direct PCB heat path via exposed thermal pad.
- Electrical Benefits: Low-inductance leads for high-frequency signal integrity.
- Reliability: Moisture-resistant (MSL3-rated) substrate for harsh environments. -
Q:What are common technical specs?
A:Standard configurations (consult datasheets):
- Body Size: 20×20 mm
- Height: 1.0 mm
- Pin Pitch: 0.5 mm
- Material: Copper-alloy leads with matte Sn plating
- Temp Range: -40°C to +125°C -
Q:Where is TQFP144 typically applied?
A:Dominant use cases:
- Embedded Systems: Microcontrollers (e.g., STM32F4 series)
- Communications: RF transceivers (e.g., Nordic nRF52)
- Industrial Automation: Motor drivers (e.g., TI DRV8xxx) -
Q:What are critical assembly guidelines?
A:Key recommendations:
- PCB Design: Thermal vias (4×4 array) under central pad for heat transfer.
- Solder Paste: Type 4 solder (particle size 20–38 μm) for fine-pitch leads.
- Reflow Profile: Peak temp ≤ 245°C (Pb-free process).
- Inspection: X-ray (AXI) mandatory to verify voiding <15% in thermal pad.



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