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DJ7101S-0.7-11/21 Automotive 10-Pin 0.7mm ECU Connector — Male Female Car Wiring Harness Socket
DJ7101S-0.7-11/21 Automotive 10-Pin 0.7mm ECU Connector Male Female Car Wiring Harness Socket
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DJ7101S-0.7-11/21 Automotive 10-Pin 0.7mm ECU Connector — Male & Female
The DJ7101S-0.7-11 (male plug) and DJ7101S-0.7-21 (female socket) are 10-pin automotive ECU connectors in the DJ series 0.7mm terminal pitch, designed for high-density ECU signal wiring harness applications on Chinese OEM vehicles. The ultra-fine 0.7mm terminal pitch allows 10 circuits in a housing smaller than a standard 4-pin 2.8mm connector — critical for modern ECU designs where dozens of signal circuits must be routed through compact connectors in space-constrained engine bay locations.
The “S” suffix in the DJ7101S designation indicates a specific housing variant (typically a secondary locking mechanism or housing shape variant) within the 10-pin 0.7mm DJ series. The 0.7mm pitch is used exclusively for low-current signal circuits — sensor inputs, CAN bus, LIN bus, and PWM outputs — and is not suitable for power or ground circuits above 3A.
Key Specifications
| Parameter | Value |
|---|---|
| OEM Part Numbers | DJ7101S-0.7-11 (male) / DJ7101S-0.7-21 (female) |
| Series | DJ series (Chinese OEM standard) |
| Pin Count | 10-pin |
| Terminal Pitch | 0.7mm |
| Housing Variant | S (secondary lock / shape variant) |
| Sealing | Unsealed |
| Housing Material | PA66 glass-filled nylon |
| Terminal Material | Tin-plated copper alloy |
| Wire Range | 0.13–0.35mm² (26–22 AWG) |
| Current Rating | Up to 3A per terminal (signal grade) |
| Operating Temperature | -40°C to +125°C |
| Compatible Platforms | SAIC, FAW, Dongfeng, Chery, Geely, BYD, Great Wall |
| Compliance | RoHS |
0.7mm Pitch ECU Connectors — Signal Circuit Applications
- High pin density for ECU signal circuits — 0.7mm pitch allows 10 signal circuits in a compact housing; used for sensor inputs, CAN bus, LIN bus, and PWM output circuits in Chinese OEM ECU applications
- Signal-grade terminals only — 0.7mm terminals are rated for up to 3A; do not use for power or ground circuits above 3A — use 1.5mm or larger terminals for higher-current circuits
- Precision crimping required — 0.7mm terminals require a precision micro-crimping tool; standard automotive ratchet crimpers are too large and will crush the terminal
- S variant secondary lock — the “S” suffix indicates a housing variant with a secondary locking mechanism that provides additional retention force; important for ECU connectors subject to vibration
Typical Applications
- Chinese OEM ECU signal connector repair
- BCM and TCU signal circuit connector replacement
- CAN bus and LIN bus circuit connector repair
- Sensor input circuit connector replacement on Chinese vehicles
Frequently Asked Questions
Q: What crimping tool is required for 0.7mm DJ series terminals?
0.7mm terminals require a precision micro-crimping tool specifically designed for ultra-fine pitch terminals (0.5–1.0mm range). Recommended tools include the Engineer PA-09, Hozan P-706, or equivalent ratchet micro-crimper with interchangeable dies. Standard automotive crimpers (designed for 1.5mm–6.3mm terminals) will crush 0.7mm terminals and produce an unreliable crimp. A proper crimp on a 0.7mm terminal should withstand a minimum 10N pull-out force.
Q: What is the difference between DJ7101S-0.7 and DJ7101-0.7 (without the S)?
The “S” suffix indicates a housing variant — typically a secondary locking mechanism (CPA — Connector Position Assurance) or a different housing shape. The base DJ7101-0.7 (without S) uses a standard snap-latch locking mechanism. The DJ7101S-0.7 adds a secondary lock that provides additional retention force and confirms full connector engagement. Both variants use the same 0.7mm terminals and have the same 10-pin mating interface — but the housing shapes may differ, so verify the variant matches your original connector.
Q: Can 0.7mm ECU connectors be repaired, or must they be replaced?
Minor corrosion on 0.7mm terminals can sometimes be cleaned with electrical contact cleaner and a fine terminal cleaning brush. However, 0.7mm terminals are extremely delicate — any physical damage (bent pin, reduced spring tension, corrosion pitting) requires terminal replacement. Given the low cost of replacement terminals and the high cost of ECU failure from a poor connection, it is generally more cost-effective to replace corroded 0.7mm terminals rather than attempting to clean them.
