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Connector Second Sourcing: How to Qualify Alternatives
Build a connector second-source plan with interface checks, electrical validation, production trials and clear approval controls for alternative parts.
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Expert insights, guides, and engineering resources to help you design reliable connections for any application.
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Connector Basics
High-Density Board-to-Board Connectors: Fine-Pitch 0.4 mm and 0.5 mm Guide
Compare 0.4 mm, 0.5 mm, and larger-pitch board-to-board connectors for density, SMT assembly, signal integrity, reliability, and stack height.
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Connector Basics
Molex SlimStack vs Samtec SEARAY: How to Choose a High-Density Board-to-Board Connector
Compare SlimStack and SEARAY by pitch, stack height, I/O density, high-speed architecture, and application fit, then evaluate connector alternatives.
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Connector Basics
Board-to-Board Connector Pin Count: How Many Contacts Do You Really Need?
Build a board-to-board connector pin budget for power, returns, differential signals, controls, test access, future margin, and mechanical constraints.
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Connector Basics
Wire-to-Board Connector Pitch Guide: 1.0 to 5.08mm Explained
Pitch is only the first filter. It does not guarantee electrical capability, mating compatibility or footprint interchangeability. Select the full connector system and apply the manufacturer’s derating data.
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Connector Basics
Wire-to-Board Connector Selection Guide: Complete Engineer’s Reference
Selection note: Current, temperature, wire range and mating-cycle figures are system-specific. Confirm the exact housing, terminal, header, wire and derating conditions in the manufacturer data sheet before release.
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Connector Basics
Locking and Latching Wire-to-Board Connectors: Vibration-Proof Design
Selection rule: Do not specify a retention force from a generic table. Obtain it from the exact mating pair’s data sheet and validate the completed harness under the required vibration, pull and thermal conditions.
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Connector Basics
Molex Micro-Fit & Mini-Fit Connectors: High-Current Wire-to-Board Guide
Engineering note: Per-circuit current is not a blanket connector-family value. It depends on the selected terminal, wire gauge, circuit count, temperature rise and application derating.
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Connector Basics
JST Connector Types: Complete Guide to PH, XH, SH, and Every Series
Important: “JST-style” is not a specification. Choose the housing, terminal and header from the same approved JST series, then confirm the exact wire range and derating in the applicable data sheet.
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Connector Basics
DuPont vs JST vs IDC: Prototype to Production Connector Guide
Migration rule: A 2.54 mm prototype header cannot be exchanged for a JST or Molex connector without a PCB and harness change. Verify footprint, header orientation, keying, terminal and cable assembly together.
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