Product Overview and Functions
This is a 4.0mm pitch, 3-row, 35-pin ECU connector, a round-pin Male header designed specifically for automotive electronic control units.
Main Functions:
- Enables highly reliable electrical connections between the ECU and wiring harness, supporting high current transmission.
- Provides stable signal and power connections, suitable for harsh environments such as automotive engine compartments.
- The 3-row structure enables high-density connections while ensuring mechanical strength.
- Easy to assemble and maintain, supporting OEM automotive electrical system integration.
Materials and Structure
- Housing: Nylon 66, flame retardant rating UL94V-0,
- color: White. Excellent high-temperature resistance, chemical resistance, and mechanical strength.
- Contacts: Brass, excellent conductivity and fatigue resistance.
- Plating: Specific thickness not listed on the page, typically tin or gold plating to improve oxidation resistance and contact reliability (specific plating can be customized).
Structural Features:
- 3-row configuration.
- Round pin design.
- Pitch 4.0 mm.
- Supports various pin count variations (8 Pin, 14 Pin, 23 Pin, 35 Pin, etc.).
- Suitable for wire-to-board or board-to-wire connections; robust and durable construction.
Main Electrical and Mechanical Specifications
| Pitch | 4.0 mm |
| Positions | 35 Pins (3 rows) |
| Rated Current | 9.0 A (per pin, high current capability) |
| Rated Voltage | 500 V AC/DC |
| Contact Resistance | Maximum 10 mΩ |
| Insulation Resistance | Minimum 1000 MΩ |
| Withstanding Voltage | 1500 V AC/min |
| Operating Temperature Range | -25°C ~ +105°C |
| Other | Flame-retardant materials, suitable for high-temperature environments in automotive engine compartments |
Application Scenarios
Designed specifically for automotive Electronic Control Units (ECUs), its main applications include:
- Engine Control Units
- Body Control Modules
- Other automotive electrical systems: sensor connections, actuator connections, power distribution, etc.
- Suitable for automotive wiring harness systems requiring high current, high reliability, and high-pin connections.
- Also applicable in other industrial equipment requiring high-current connections.
MQS series connectors are commonly used in the automotive industry in environments such as engine compartments and instrument panels, emphasizing vibration resistance, high-temperature resistance, and long-term reliability.
A close-up of the 35-pin ECU connector in an automotive wiring harness (male connector crimped into the harness).
Clearly showing the white Nylon housing, round pin structure, and multi-row arrangement; commonly used for ECU connections.
Usage Features
- Main Applications: Automotive ECU (Engine Control Unit), vehicle control modules, sensor interfaces, power distribution, etc.
- Advantages: High current (9A/pin), robust and durable, easy to crimp and assemble, meets automotive environmental requirements.
- Common Connections: Used with a corresponding 35-pin female connector to form a complete wire-to-board or wire-to-wire connection.
Technical Documentation and Other Information
- Packaging: Typical automotive connector packaging (details available upon inquiry).
- Certifications: Housing meets UL94V-0 flame retardant standards; materials comply with automotive industry environmental requirements (RoHS, etc.).
- Customization: Supports customization services for different pin counts (8/14/23/35 pins), plating options, colors, etc.
- Supply: Accepts small and large volume orders with short lead times.
Notes:
- This is the male connector version, typically used with a corresponding female connector.
- The 4.0mm pitch + high current (9A) design makes it suitable for high-power ECU applications, but attention must be paid to alignment accuracy and welding/crimping processes during installation.
- Unlike the previously searched HSD, FAKRA, and DIN 41612 connectors, this product is more geared towards high-current power/signal hybrid automotive ECU connectors.
- If your project requires a waterproof version, higher pin count, different number of rows, or a complete automotive-grade verification report, please provide your specific requirements for manufacturer recommendations or customization.
If you need images of this 4.0mm 35Pin ECU Connector in actual automotive applications (ECU connection, wiring harness photos, engine compartment applications, etc.), or comparisons with other HSD and MQS series connectors, please let me know, and I can provide further information!
FAQ
Q: What are the specifications of this connector?
A: 4.0mm pitch, 3 rows of 35 pins, male connector, ECU-specific, PA66 UL94V-0 white insulator, brass contacts, automotive-grade board-end connector.
Q: Materials and flame retardant rating?
A: PA66 UL94V-0 insulator, brass contacts, plating as per order information, meets automotive flame retardant and reliability requirements.
Q: How are the 35 pins arranged?
A: 3-row layout, standard ECU board-end male pins. Specific pin definitions should refer to the accompanying drawings/female wiring harness definitions.
Q: Can it be used in the engine compartment?
A: Operating temperature: -25~+105℃, suitable for non-high-temperature areas in the driver's cabin/engine compartment. For long-term environments ≥105℃, a high-temperature resistant model is required.
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