20-Pin ECU PCB Connector – HD201S-0.7-10, Automotive Wire-to-Board Plug for ECU & Control Module Wiring Harness

HD201S-0.7-10 is a 20-pin wire-to-board (WTB) automotive connector for ECU and control module PCB connections. The designation decodes as: HD201S = connector series; 0.7 = 0.7mm contact pitch; 10 = 10-position (note: “20-pin” may refer to a 2-row × 10-position configuration). Wire-to-board connectors provide the interface between the wiring harness and the PCB inside the ECU or control module — the PCB-mount header is soldered to the ECU board; the cable-mount plug connects the harness to the header. Used in automotive ECU, BCM, TCM, and other control module applications.

Key Specifications

• Part Number: HD201S-0.7-10
• Pin Count: 20 pins (2 rows × 10 positions)
• Contact Pitch: 0.7mm
• Connector Type: Wire-to-board (WTB) — cable-mount plug + PCB-mount header
• Wire Range: 0.13–0.35mm² (26–22AWG)
• Current Rating: 3–5A per contact
• Application: ECU, BCM, TCM, and automotive control module PCB connections

Wire-to-Board Connectors in Automotive ECUs

Modern automotive ECUs use wire-to-board connectors to interface the external wiring harness with the internal PCB. The connector system consists of two parts:

• PCB-mount header (board side): Soldered directly to the ECU PCB. Provides the fixed connection point on the board.
• Cable-mount plug (harness side, this product): Connects to the PCB header. Carries the wiring harness conductors to the ECU board.
• Both parts must be compatible — verify the PCB header part number matches the cable-mount plug before ordering.

Frequently Asked Questions

How do I repair a damaged HD201S-0.7-10 connector?

If the cable-mount plug housing is damaged (cracked, broken latch): replace the housing and re-terminate the wires. If individual contacts are damaged: use a micro extraction tool to remove the damaged contact, crimp a new 0.7mm contact onto the wire, and reinsert. If the PCB-mount header on the ECU board is damaged: this requires PCB-level repair (resoldering the header) — beyond standard harness repair scope.

What crimp tool is required for 0.7mm WTB contacts?

0.7mm wire-to-board contacts require a precision micro-crimp tool with dies specifically designed for the 0.7mm contact geometry. Standard automotive crimp tools will crush 0.7mm contacts. Use a dedicated micro-crimp tool for consistent, reliable crimps at this contact size.

Can I use HD201S-0.7-10 for non-automotive applications?

Yes. 0.7mm pitch wire-to-board connectors are used in industrial electronics, medical devices, and consumer electronics where compact, reliable wire-to-board connections are required. The automotive-grade housing material (PA66, flame retardant) provides additional durability compared to standard commercial-grade WTB connectors.

Typical Applications

• ECU repair: Replacing damaged cable-mount plug housings on ECU harness connections
• BCM/TCM repair: Control module harness connector replacement
• Automotive electronics: Wire-to-board connections in automotive control modules
• Industrial electronics: Compact wire-to-board connections in industrial control equipment

Package Contents

1 piece — HD201S-0.7-10 20-pin automotive ECU cable-mount plug connector. PCB-mount header and contacts ordered separately if not included.