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FAQs
Frequently Asked Questions
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What’s the difference between gold plating and tin plating for header and socket connectors?
Gold Plating: Offers excellent antioxidant resistance, low and stable contact resistance, and is suitable for high-frequency signals, small-current signals (such as those from sensors), or applications requiring high reliability. However, it comes at a higher cost. Tin Plating: Low in cost but prone to oxidation; over time, its contact resistance may increase. It’s ideal for general power circuits and consumer electronics. It performs well in applications with relatively few plug-and-unplug cycles.
What’s the difference between wafer connectors and header/connector arrays?
A wafer connector typically refers to a small, plastic-bodied, multi-pin wire-to-board connector that requires terminals to be crimped onto wires before being inserted into the connector. It is commonly used to connect internal wiring harnesses within a chassis to the motherboard. A header and socket are direct mating connectors for board-to-board or wire-to-board applications; they usually feature straight or 90-degree right-angle configurations with regularly arranged pins.
How can we cope with the ever-increasing signal transmission speeds?
Choose high-frequency models: Connectors specifically designed for high frequencies typically feature ground shielding and impedance-matching designs. Shorten signal paths: Position connectors as close as possible to the chip to minimize stub effects. Material matters: Use connectors and cables made from low-loss (Low Dk/Df) insulating materials, such as LCP.
How can we ensure the reliability of connectors in vibration environments?
Choose FPC/FFC connectors with robust locking mechanisms (such as flip-type or lift-type connectors) to prevent cable disconnection. For header and socket pairs, you can use sockets equipped with positioning pins or locking mechanisms. Ensure that wafer connectors are securely fastened to the PCB board without any looseness. In PCB layout design, add reinforcing holes or adopt the SMT + wave soldering process to enhance solder joint strength.
What are the different package styles for motherboards? How do you choose one?
Common types include: DIP (Dual-In-Line) type: Suitable for wave soldering, with high mechanical strength. SMT (Surface Mount Technology) type: Ideal for reflow soldering, featuring a high degree of automation; however, its soldering strength is slightly lower compared to the DIP type. Press-Fit type: Does not require soldering—instead, it is press-fitted into metallized holes on the PCB. This type is well-suited for applications where heating is not permitted and for scenarios demanding high reliability. Selection criteria: The choice primarily depends on the PCB’s manufacturing process and structural strength requirements.
Why is the circuit still not working after the FPC connector’s latch is engaged?
Insufficient insertion depth: Ensure that the FPC/FFC has been fully inserted all the way in; when the latch is engaged, you should feel a distinct “click” feedback. Gold finger contamination/oxidation: Check whether the gold-finger section of the FPC/FFC is clean and free from oxidation, stains, or fingerprints. Damage to contact terminals: The precision terminals inside the connector may become damaged or deformed due to incorrect insertion or excessive stress.
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