M55-6026842R Harwin Connector (Other) In Stock
Harwin M55-6026842R is a female board stacking connector with phosphor bronze contacts and tin-over-nickel termination finish for reliable board-to-board connections. The 1.9" body length and 0.064–0.072" hole mounting accommodate standard PCB stackup configurations. Available from stock worldwide with fast shipping.
- Manufacturer
- Harwin
- Package
- Other
- Pin Count
- 72
- Lifecycle
- ACTIVE
- Datasheet
- M55-6026842R Datasheet PDF
- Category
- Connector
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Female board stacking connector with phosphor bronze contacts providing excellent spring force and long mating cycle durability
- Tin (Sn) over Nickel (Ni) barrier contact termination finish offering corrosion resistance and reliable solder joint integrity
- 1.9 inch body length with 0.165 inch breadth enabling wide board stacking configurations in industrial and computing platforms
- Hole-mount PCB termination fitting 0.064–0.072 inch board holes for secure mechanical and electrical connection in stacked assemblies
Applications
The Harwin M55-6026842R is designed for board stacking and backplane interconnect applications in industrial computing, embedded systems, and ruggedized electronics requiring reliable multi-board assemblies. Its female phosphor bronze contacts with tin-over-nickel finish provide consistent electrical continuity and mechanical retention across the 1.9-inch connector body used in parallel board configurations. This connector is also well suited for high-density data acquisition systems, communication modules, and instrument clusters where dependable board-to-board mating is critical.
Specifications
| YTEOL | 8.75 |
| Board Mounting Option | HOLE .064-.072 |
| Body Breadth | 0.165inch |
| Body Depth | 0.537inch |
| Body Length | 1.9inch |
| Connector Type | BOARD STACKING CONNECTOR |
| Contact Finish Mating | NOT APPLICABLE |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | FEMALE |
| Contact Material | PHOSPHOR BRONZE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 25mΩ |
| Contact Style | SQ PIN-SKT |
| Durability | 500Cycles |
| Filter Feature | NO |
| Insertion Force-Max | 0.8N |
| Insulation Resistance | 10000000000Ω |
| Insulator Material | LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.05inch |
| Mixed Contacts | NO |
| Mounting Option 1 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 5.5mm |
| Plating Thickness | 0.98u inch |
| Rated Current (Signal) | 1.2A |
| Reference Standard | UL |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 68 |
| UL Flammability Code | 94V-0 |
| Withdrawl Force-Min | 0.2N |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What contact material and finish does the M55-6026842R use, and how does this affect its reliability?
The M55-6026842R uses phosphor bronze contacts with a tin (Sn) over nickel (Ni) barrier termination finish. Phosphor bronze provides high spring force for reliable mating retention, while the nickel barrier beneath the tin surface prevents diffusion and maintains stable contact resistance over thousands of mating cycles in board stacking applications.
What PCB hole size is required to mount the M55-6026842R, and what is the connector body length?
The M55-6026842R requires PCB holes between 0.064 and 0.072 inches in diameter for board mounting. The connector body is 1.9 inches long and 0.165 inches wide, allowing it to span multiple signal and power rows in board stacking and backplane configurations common in industrial and computing electronics.
In what board stacking or backplane designs is the M55-6026842R most commonly used?
The M55-6026842R is used in board-to-board stacking designs for industrial computers, embedded controllers, telecom backplanes, and ruggedized modules. Its female gender with phosphor bronze contacts and 1.9-inch body length supports multi-board assemblies requiring consistent electrical performance and mechanical stability across the full 0.537-inch body depth.
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