Crimping is the process of joining a wire to a connector terminal using compression, rather than soldering. It’s commonly used with JST connectors, Dupont connectors, and other terminal systems to ensure a secure, conductive, and mechanically strong electrical connection.
Crimping Basics for JST Connectors
Tools You’ll Need
- Crimping tool
- Use a model compatible with your pin type (e.g., Engineer PA-09, IWISS IWS-3220M, or a specific JST tool like JST WC-110).
- JST Crimp Pins
- Must match your connector series (e.g., JST PH uses SPH-002T-P0.5S).
- Wire (typically 28–22 AWG)
- Stranded wire is ideal for crimping.
Steps to Crimp a JST Connector
1. Strip the Wire
- Strip 1.5–2 mm of insulation from the wire.
- Do not nick or cut wire strands.
2. Insert Wire into Crimp Terminal
- The terminal has two sets of wings:
- Front wings: Grip the bare wire.
- Rear wings: Grip the insulation for strain relief.
3. Crimp the Terminal
- Place the terminal into the crimping die (correct slot size).
- Ensure the wire is fully inserted.
- Squeeze the crimper firmly until it releases.
4. Inspect the Crimp
- Check that:
- The wire is tight inside the terminal.
- The wings are properly folded over the wire and insulation.
- The crimp is centered and not damaged or flattened.
5. Insert into Housing
- Push the crimped terminal into the connector housing until it clicks.
- The locking tab will prevent it from backing out.
- Tug gently to confirm its secured.