5557 Vertical 4.2mm Pitch Wire to Board Connector Double Row Straight Pin Buckle
55557 Vertical 4.2mm Pitch Wire-to-Board Connector Double Row Straight Pin Buckle
Product Highlights
✅ Pitch: 4.2mm, Double Row, Vertical Straight Pin Wire-to-Board Connector
✅ UL94V-0 Flame Retardant Housing, Halogen-Free for industrial & home appliances
✅ Anti-vibration locking buckle: Prevents accidental un-mating under continuous shock & vibration (industrial / vehicle harsh environment)
✅ Complete set available: Matching Housing + Crimp Terminals supplied together
Technical Specifications
| Item | Details |
|---|---|
| Electrical Performance | Rated Current: 5A max per circuit
|
| Mechanical Performance | Pitch: 4.2mm
|
| Material & Plating | Housing: Nylon, UL94V-0, Halogen-Free
|
| Environmental | Operating Temp: -40℃ ~ +105℃
|
| Soldering Guide | Reflow soldering: Max 260℃, 10s max
|
Cross Reference / Alternative Replacement
Direct alternative to famous international connector brands:
- JST: XH series
- Molex: 55557 series
- TE (AMP): Equivalent 4.2mm double row vertical wireboard series
Product Features
- 4.2mm pitch double row vertical straight pin structure, compact PCB footprint
- Built-in secure buckle, anti-disengagement under vibration
- Halogen-free UL94V-0 nylon insulator
- Complete solution: housing + terminals one-stop procurement
- Stable tin-plated contact, low contact resistance
Product Advantages
- Anti-vibration locking buckle solves accidental un-mating pain point for industrial & on-board equipment
- High flame retardant + halogen-free, meets strict green & safety standards
- Interchangeable with JST/Molex/TE 4.2mm series, easy drop-in replacement without PCB redesign
- Stable electrical performance under a wide temperature range
- Factory direct supply, flexible custom service available
Application
- Industrial control equipment
- Home appliances (refrigerator, washing machine, air conditioner)
- Automotive auxiliary electronics, vehicle interior modules
- Power supply & UPS
- LED lighting drivers
- Medical & measuring instruments
Packaging Method
- Standard: Anti-static bag packing
- Optional: White / Neutral carton box packing. Custom packing label & barcodes available upon request.
Payment Method
EXW, FOB, CIF, CPT, T/T, L/C available
Lead Time
- Samples: 3 working days
- Mass order: 1–2 weeks
Factory Certificate & Custom Service
- Certifications: UL, RoHS, REACH, ISO9001
- MOQ: Low MOQ for standard items
- Sample Policy: Free samples available / Fast sample delivery.
- Custom service: Custom pin count, plating thickness, cable harness assembly, special packaging & marking.
Customer Selection Guide
- Confirm pin count & PCB mounting direction: Vertical straight pin
- Verify working current, voltage, and temperature range
- For high vibration scenario: Must use buckle version to avoid un-mating
- Green material requirement: Select Halogen-Free + UL94V-0 housing
- Cross-check: Direct substitute for Molex 55557 / JST XH / TE equivalent 4.2mm connectors; verify pin assignment before replacement
- Soldering: Follow reflow temperature profile strictly to prevent housing melting
FAQ
1. Q: Do you have a catalogue? Can you send me the catalogue to check all your products?
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.





