M50-3551342 Harwin Connector (Other) In Stock
Harwin M50-3551342 is a male board connector from the M50 series with brass contacts, tin-over-nickel termination, and a 1.27 mm (0.050") pitch, providing reliable PCB-to-board signal connections for compact electronic systems in industrial, aerospace, and instrumentation applications.
- Manufacturer
- Harwin
- Package
- Other
- Pin Count
- 26
- Lifecycle
- ACTIVE
- Datasheet
- M50-3551342 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
- M50 series 1.27 mm (0.050") pitch male board connector with brass contacts for high-density signal interconnects
- Tin (Sn) over nickel (Ni) barrier termination contacts compatible with standard lead-free reflow soldering processes
- Compact 1.22 inch body length fits high-density PCB layouts where standard 2.54 mm pitch connectors cannot be used
- RoHS-compliant construction suitable for modern eco-conscious product designs requiring lead-free assembly
Applications
The Harwin M50-3551342 is designed for compact board-to-board signal interconnects in applications such as ruggedized industrial control modules, avionics sub-assemblies, and high-density data acquisition hardware where 1.27 mm pitch connectors are required to meet tight PCB space constraints. Its brass-contact construction ensures mechanical durability across repeated mating cycles, making it suitable for test jig sockets, embedded computing daughter cards, and sensor interface boards. The M50 series is widely used in applications demanding reliable connectivity within a 0.050" pitch footprint, covering configurations from single-row to multi-row layouts.
Specifications
| Pbfree Code | Yes |
| YTEOL | 9.15 |
| Body Breadth | 0.263inch |
| Body Depth | 0.325inch |
| Body Length | 1.22inch |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | NOT APPLICABLE |
| Contact Finish Termination | Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | BRASS |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 20mΩ |
| Contact Style | SQ PIN-SKT |
| Dielectric Withstanding Voltage | 1400VAC V |
| Filter Feature | NO |
| Insulation Resistance | 500000000Ω |
| Insulator Material | GLASS FILLED LIQUID CRYSTAL POLYMER |
| JESD-609 Code | e3 |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.05inch |
| Mixed Contacts | NO |
| Mounting Option 1 | LATCH & EJECT |
| Mounting Option 2 | LOCKING |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number Of PCB Rows | 2 |
| Number of Rows Loaded | 2 |
| PCB Contact Pattern | RECTANGULAR |
| PCB Contact Row Spacing | 1.27mm |
| Polarization Key | POLARIZED HOUSING |
| Rated Current (Signal) | 1.75A |
| Reference Standard | UL |
| Terminal Length | 0.107inch |
| Terminal Pitch | 1.27mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 26 |
| 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 pitch does the Harwin M50-3551342 use, and how does it compare to standard 0.100" connectors for board space savings?
The Harwin M50-3551342 uses a 1.27 mm (0.050") contact pitch, which is half the spacing of standard 2.54 mm (0.100") connectors. This allows engineers to fit the same number of signal lines in roughly half the PCB footprint, enabling high-density designs such as compact embedded computing modules, miniaturized sensor boards, and ruggedized avionics sub-assemblies where space is measured in fractions of a square centimeter.
What termination finish does the M50-3551342 use, and why is the nickel barrier layer important for PCB assembly?
The M50-3551342 uses tin (Sn) with a nickel (Ni) barrier on its termination contacts. The nickel barrier prevents tin diffusion into the brass base metal during reflow soldering at temperatures up to 260°C, maintaining joint integrity over thousands of thermal cycles. This ensures consistent solder joint strength in automated SMT assembly processes without whisker growth concerns associated with pure tin finishes.
In which high-reliability application environments is the Harwin M50-3551342 preferred over standard commercial board connectors?
The M50-3551342 is specified for ruggedized applications including military avionics, space-qualified payload boards, industrial field instruments, and downhole drilling electronics where the compact 1.27 mm pitch and robust brass-contact construction deliver reliable signal integrity despite vibration, shock, and thermal cycling. Harwin M50 series connectors are rated for operating temperatures from -55°C to +125°C, making them a natural fit where commercial-grade connectors rated only to 85°C would fail.
What are the key body dimensions of the M50-3551342, and how do they affect PCB placement planning?
The M50-3551342 body measures 1.22 inches in length, 0.263 inches in breadth, and 0.325 inches in depth. These dimensions must be accounted for in PCB keepout zones, particularly when placing the connector near board edges or in stacked board assemblies where height clearance between PCBs is limited to under 10 mm. The compact footprint enables placement on densely populated boards where a larger 2.54 mm pitch housing would conflict with neighboring components.
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