Mezzanine (Board-to-Board) Connectors: China Sourcing
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Mezzanine connectors are board-to-board (BTB) pairs that stack two PCBs at a fixed height, common in compact modules and camera/display assemblies. Sourcing them in China means choosing between OEM originals (Hirose, Molex) and Chinese clones, where clones can save 50-70% but introduce fine-pitch alignment and retention risks at 0.4-0.5 mm pitch. Stacking height and mating cycle life are the specs that determine mechanical reliability.
When you source mezzanine connectors, fine-pitch clones are the main trap: a 0.4 mm clone may mate but suffer poor contact retention or coplanarity issues that show up as intermittent connections after thermal cycling. We check mating force, stacking height tolerance, and solder-joint quality, and verify clone-vs-original where signal integrity is critical.
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FAQ
Are Chinese clone mezzanine connectors safe to use?
For non-critical, larger-pitch parts they can be fine and save 50-70%. At fine pitches (0.4-0.5 mm) or for high-speed signals, clone tolerance and retention issues raise reliability risk, so qualify samples through thermal cycling before committing.
What stacking heights are available for BTB mezzanine connectors?
Common stack heights range from around 1.5 mm up to 5+ mm, set by the mated connector pair. Confirm the exact mated height and tolerance because mismatched heights cause solder stress or open joints between the two boards.
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