2026年10月7日
How CAN Bus Connectors Work: Types, Pinouts, and Wiring Basics
Learn how CAN bus connectors work, including types, pinouts, and wiring basics. Read this guide to choose the...
Detailed Product Information
Technical Data & Reference
Structured parameters, material notes, application context and frequently asked questions for engineering and procurement evaluation.
Competitor & Cross-Reference
- Alternative Type
- Drop-in Replacement
- Competitor Part Number
- Molex 39-01-2040 / Molex 39-00-0038 / RVN 1.25-3.5M
- Mates With
- Molex Mini-Fit Jr. 5556 / 5566 / 5569 Series 4.20mm Pitch Headers (Dual Row, 4 Positions) and M3.5 / #6 Grounding Studs
Drop-in Replacement: This part is a direct, pin-compatible substitute for the competitor part number listed above. No design modification required.
Technical Specifications
- Harness / Cable Type
- Industrial Motherboard Power Wire Harness
- Connector P1 Interface
- 4-Pin 4.20mm Pitch Receptacle Housing (Molex 39012040 Equivalent)
- Connector P2 Interface
- 2x M3.5 Ring Terminals (RVN 1.25-3.5M, Ø3.7mm ID x 6.6mm OD)
- Wire Specification
- UL1569 22 AWG Stranded Copper (Red, Black)
- Overall Assembly Length
- 260 ±10 mm
- Conductor Breakout Length
- 10 mm Ref. (Ring Terminal side) / 20 mm Ref. (Housing side)
- Protective Sleeve
- Ø4.0 mm PET Braided Expandable Sleeve (230 mm Length)
- Terminal Retention / Pull Force
- Compliant with UL486A Reference Standards
- Workmanship & Quality Standard
- IPC/WHMA-A-620E, 100% Tested for Open, Short & Miswire
- Packaging Method & Quantity
- 100 PCS / Bag
- Regulatory Compliance
- RoHS 2.0 Compliant
Material Composition
| Material | Value / Description |
|---|---|
| Receptacle Housing Material | Nylon 6/6 Polyamide, UL 94V-2 / UL 94V-0 Rated, Natural |
| Socket Contact Material & Plating | Brass / Phosphor Bronze, Tin Plated (Molex 39000038 Equivalent) |
| Ring Terminal Material | Tinned Copper Alloy with Vinyl / Red PVC Insulation (RVN 1.25-3.5M) |
| Wire Insulation | Lead-Free Heat-Resistant PVC (UL1569, 105°C, 300V) |
| Sleeving & Bundling Material | PET (Polyethylene Terephthalate) Monofilament & Black Electrical Tape |
Technical Characteristics
| Characteristic | Value |
|---|---|
| Rated Voltage | 300 V AC/DC |
| Temperature Rating | -20°C to +105°C |
| Electrical Integrity Test | 100% Tested for Open Circuits, Short Circuits, and Miswiring |
| Terminal Pull-Out Force | Tested to UL486A Tensile Test Specifications |
| Overall Length Tolerance | ±10 mm (260 mm Nominal Length) |
Application Scenarios
-
Industrial Motherboards & Embedded Box PCs (IPC)
-
DC Power Distribution & Chassis Grounding Harnesses
-
Telecommunications & Network Switch Power Rails
-
Factory Automation Cabinets & DIN-Rail Power Modules
-
Commercial Display & Kiosk Controller Internal Power Runs
Evidence & Reference Images
Frequently Asked Questions
What connector and stud dimensions are compatible with this power harness?
The P1 end mates with standard Molex Mini-Fit Jr. 4.20mm pitch dual-row 4-pin male headers, while the P2 termination features two RVN 1.25-3.5M ring lugs with a 3.7mm inside diameter designed for M3.5 or #6 threaded screw terminals and chassis grounding studs.
What conductor ratings and mechanical protection are implemented?
The assembly uses UL1569 certified 22 AWG wires rated for 105°C and 300V, protected by a 230mm Ø4.0mm PET braided expandable sleeve and black electrical tape wrapping to prevent wire chafing against metal enclosure cutouts.
How are pull force and crimp reliability verified?
Terminal crimp integrity is validated against UL486A pull force standards, and all assemblies undergo 100% finished product inspection and electrical testing for open, short, and miswired circuits in compliance with IPC/WHMA-A-620E criteria.
Overview and Application Notes
This custom industrial motherboard power wire harness features a 4.20mm pitch 4-pin female receptacle connector breaking out to dual M3.5 ring tongue terminals, wired with UL1569 22 AWG discrete conductors. Engineered with a durable PET expandable braided sleeve, black electrical tape binding, and a nominal length of 260mm, it provides dependable power delivery and chassis ground connections for industrial motherboards, embedded computing, and automation power modules.
Key Features
- Interface Configuration: 4.20mm pitch 4-circuit female receptacle housing mated with standard 18-24 AWG crimp socket contacts to dual insulated M3.5 (Ø3.7mm inner diameter) ring terminals.
- Rugged Wire & Harness Build: UL1569 22 AWG high-temperature lead wires (105°C, 300V) protected within a Ø4.0mm PET braided expansion sleeve.
- Pinout Allocation: 2 active conductors routed across 4 pin positions (Pin 1/3 Red to ring terminal, Pin 2/4 Black to ring terminal).
- Secure Retention & Standards: Crimps conform to UL486A terminal pull force standards, with total harness assembly inspected to IPC/WHMA-A-620E Class 2.
- 100% Quality Assurance: Fully tested for open circuits, shorts, and miswiring before shipment.
Engineering Specifications & System Integration
Designed for industrial computing backplanes and chassis power distribution, the harness bridges standard 4.2mm headers with DC power studs or grounding bars. The 4-pin housing includes positive latching to prevent dislodging under machine vibration. Conductor breakouts measure 10mm reference at the ring terminal side and 20mm reference at the connector side, providing sufficient flex relief for tight enclosure routing while maintaining full compliance with IPC/WHMA-A-620E tolerances (260 ±10mm overall length).
