Keszoox
DJ7011QA-2.8-21 Automotive Waterproof Connector — 2.8mm Series 1-Pin Sealed Plastic Housing Socket with Terminal
DJ7011QA-2.8-21 Automotive Waterproof Connector 2.8mm Series 1-Pin Sealed Plastic Housing Socket with Terminal
Couldn't load pickup availability
DJ7011QA-2.8-21 Automotive Waterproof Connector — 2.8mm Series, 1-Pin Sealed Housing
The DJ7011QA-2.8-21 is a 1-pin waterproof automotive connector in the 2.8mm terminal series, featuring a sealed PA66 nylon housing with integrated wire seal for reliable moisture protection in underhood and chassis wiring applications. The 2.8mm terminal pitch is widely used across Japanese and European OEM wiring harnesses for sensor, actuator, and low-to-moderate current circuits. The “QA” designation indicates a sealed (waterproof) variant with individual wire seal, providing IP67-equivalent protection when correctly assembled.
Key Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | DJ7011QA-2.8-21 |
| Pin Count | 1-pin |
| Terminal Pitch | 2.8mm |
| Gender | Female socket (“-21” suffix) |
| Sealing | Waterproof (QA sealed series) |
| Housing Material | PA66 glass-filled nylon |
| Terminal Material | Tin-plated copper alloy |
| Wire Range | 0.3–1.0mm² (22–18 AWG) |
| Current Rating | Up to 7A (2.8mm terminal) |
| Operating Temperature | -40°C to +125°C |
| Locking | Positive snap-latch |
| Compliance | RoHS |
| Origin | Mainland China |
2.8mm Series — The Sensor Connector Standard
- 2.8mm pitch for sensor circuits — the 2.8mm terminal series is the dominant pitch for automotive sensor connectors (O2 sensors, coolant temperature, MAP, MAF, throttle position) across Japanese and European OEM harnesses
- QA sealed variant — the “QA” suffix indicates a waterproof sealed housing with individual wire seal; suitable for underbody, wheel well, and exterior sensor locations
- 7A current rating — sufficient for all standard automotive sensor circuits (typically 0.1–1A) with ample headroom for heated sensor elements (O2 sensor heater: 1–3A)
- PA66 housing — rated for continuous underhood temperatures; resistant to engine oil, coolant, and fuel vapors
- OEM dimensions — manufactured to DJ series mating specifications for direct replacement compatibility
Package Options
| Option | Contents |
|---|---|
| Single unit | 1× DJ7011QA-2.8-21 housing + 1× terminal + wire seal |
| Multi-pack | Multiple sets (see variant selector) |
Typical Applications
- O2 / lambda sensor connector replacement (heated sensor circuits)
- Coolant temperature and oil pressure sensor wiring repair
- MAP / MAF sensor connector replacement
- Throttle position sensor wiring harness repair
- ABS wheel speed sensor connector replacement
- Any 2.8mm series sealed sensor connector repair
Frequently Asked Questions
Q: What is the difference between DJ7011QA-2.8-21 and DJ7011-2.8-21?
The “QA” designation indicates a sealed (waterproof) variant with individual wire seals and a sealed housing. The standard DJ7011-2.8-21 (without QA) is an unsealed connector for protected interior locations. Use the QA variant for any application where moisture exposure is possible — underbody, wheel well, or exterior sensor locations.
Q: How do I identify the correct 2.8mm terminal for this housing?
The DJ7011QA-2.8-21 uses a 2.8mm open-barrel crimp terminal compatible with the DJ series. The terminal has a wire barrel for electrical contact and an insulation barrel for strain relief. Ensure the terminal is sized for your wire gauge (0.3–1.0mm² / 22–18 AWG). Using an oversized terminal in a 2.8mm housing will prevent proper locking and create a loose connection.
Q: Can I use this connector for an O2 sensor with a heated element?
Yes — the 2.8mm terminal is rated for 7A continuous, which is well above the 1–3A draw of a heated O2 sensor element. However, note that most O2 sensors use a multi-pin connector (3 or 4 pin) for the combined signal and heater circuit. The DJ7011QA-2.8-21 is a 1-pin connector — verify your sensor’s connector pin count before ordering.
