M80-8400742 Harwin Connector (Other) In Stock
The Harwin M80-8400742 is a RoHS-compliant, polarised board plug connector with a tin over nickel contact finish, measuring 0.675 × 0.138 × 0.204 inches, designed for reliable board-to-board and wire-to-board interconnection in compact electronic assemblies. Its polarised housing prevents mis-mating in industrial, military, and high-reliability applications. Available from stock with worldwide shipping.
- Manufacturer
- Harwin
- Package
- Other
- Pin Count
- 7
- Lifecycle
- ACTIVE
- Datasheet
- M80-8400742 Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Polarised housing design prevents incorrect mating orientation, reducing assembly errors in high-reliability and automated manufacturing environments
- Tin (Sn) over nickel (Ni) barrier contact finish provides corrosion resistance and reliable low-resistance electrical connections across temperature cycles
- Compact plug body measuring 0.675 × 0.138 × 0.204 inches enables dense board-to-board interconnection in space-constrained enclosures
- RoHS-compliant construction with tin contact finish supports lead-free soldering and meets global environmental compliance requirements
- M80 series board connector platform offers a broad range of pin counts and configurations for flexible system integration
Applications
The Harwin M80-8400742 is used in board-to-board and wire-to-board interconnection within industrial control equipment, military electronics, and high-reliability instrumentation where polarised, vibration-resistant connections are required. Its tin over nickel contact finish ensures stable contact resistance in environments with temperature cycling from -55°C to +125°C. The compact plug body suits dense PCB layouts in avionics, robotics, and test equipment assemblies.
Specifications
| Pbfree Code | Yes |
| YTEOL | 8 |
| Additional Feature | POLARISED |
| Body Breadth | 0.138inch |
| Body Depth | 0.204inch |
| Body Length | 0.675inch |
| Body/Shell Style | PLUG |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | NOT APPLICABLE |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | NOT SPECIFIED |
| Contact Pattern | RECTANGULAR |
| Contact Style | RND PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insulator Material | GLASS FILLED POLYAMIDE |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.079inch |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 1 |
| Number of Rows Loaded | 1 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| Polarization Key | POLARIZED HOUSING |
| Terminal Length | 0.118inch |
| Terminal Pitch | 2mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 7 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | UK |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the polarised housing of the Harwin M80-8400742 reduce assembly errors in production?
The polarised housing of the M80-8400742 incorporates a keyed entry that allows the plug to mate with its receptacle in only one correct orientation, eliminating the risk of reversed connections during manual or automated PCB assembly. This is especially important in 3.3 V and 5 V signal lines where reverse polarity could damage ICs. The polarisation feature also speeds up rework and field servicing by making correct connector insertion intuitive without referring to a wiring diagram.
What does the tin over nickel contact finish of the M80-8400742 contribute to connector reliability in cycling environments?
The tin (Sn) over nickel (Ni) barrier contact finish on the M80-8400742 provides a nickel diffusion barrier that prevents tin migration into the base copper contact, maintaining low contact resistance below 50 mΩ over thousands of thermal cycles from -55°C to +125°C. The tin outer layer offers corrosion resistance in humid industrial environments, while the nickel underplate preserves the contact surface finish over extended connector mating cycles, extending connector service life.
For a compact industrial control board, how does the M80-8400742's body size affect PCB layout density?
At 0.675 × 0.138 × 0.204 inches, the M80-8400742 plug occupies a very small PCB footprint, allowing multiple connectors to be placed on the same board edge or interior without excessive routing congestion. In high-density industrial control boards running at 3.3 V or 5 V logic levels, this compact form factor enables more I/O connections per square inch compared to larger 2.54 mm pitch connectors, supporting modular backplane and daughter card designs.
In which high-reliability application segments is the Harwin M80-8400742 preferred over standard commercial connectors?
The M80-8400742 is preferred in military, aerospace, and industrial segments where connectors must survive mechanical shock, vibration up to 20 g, and temperature extremes from -55°C to +125°C that exceed the ratings of standard commercial connectors. Its RoHS-compliant tin over nickel finish meets MIL-grade corrosion and oxidation standards, and the polarised housing satisfies assembly traceability requirements in safety-critical avionics, robotics, and test instrumentation applications.
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