M52-5102045 Harwin Connector In Stock
Harwin M52-5102045 is a 40-contact (20+20) dual-in-line vertical through-board socket assembly with 1.27 mm pitch, 4.6 mm height, and gold contact finish, designed for high-density miniature module interconnection in compact embedded and aerospace electronics.
- Manufacturer
- Harwin
- Package
- —
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- M52-5102045 Datasheet PDF
- Category
- Connector
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40 contacts (20+20 DIL) in compact 1.27 mm (0.05 inch) pitch for ultra-high-density layouts
- Gold contact finish for reliable low-resistance mating across repeated insertion cycles
- 4.6 mm height vertical through-board profile minimizing board stack height
- RoHS-compliant construction supporting lead-free assembly and environmental compliance
Applications
The M52-5102045 is ideal for socketing small compute modules, memory sticks, and RF daughtercards in embedded systems and aerospace electronics where 1.27 mm pitch and 40 contacts must fit in a minimal PCB footprint. Its gold-finished contacts and through-board vertical mounting support reliable signal integrity in high-vibration environments such as UAVs, satellite subsystems, and ruggedized industrial controllers.
Specifications
| Pbfree Code | Yes |
| YTEOL | 9.15 |
| Additional Feature | ROHS COMPLIANT |
| Body Breadth | 0.197inch |
| Body Depth | 0.181inch |
| Body Length | 1.016inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | NOT APPLICABLE |
| Contact Finish Termination | Gold (Au) |
| Contact Gender | FEMALE |
| Contact Material | NOT APPLICABLE |
| Contact Pattern | RECTANGULAR |
| Contact Resistance | 30mΩ |
| DIN Conformance | NO |
| Dielectric Withstanding Voltage | 500VAC V |
| Durability | 300Cycles |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insertion Force-Max | 1.0008N |
| Insulation Resistance | 1000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | POLYAMIDE |
| JESD-609 Code | e4 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.05inch |
| Mating Contact Row Spacing | 0.1inch |
| 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 |
| Rated Current (Signal) | 1A |
| Reference Standard | UL |
| Terminal Length | 0.118inch |
| Terminal Pitch | 1.27mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 40 |
| UL Flammability Code | 94V-0 |
| Withdrawl Force-Min | .11954N |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Taiwan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 1.27 mm pitch of the M52-5102045 compare to standard 2.54 mm pitch sockets for high-density PCB designs?
At 1.27 mm (0.05 inch) pitch, the M52-5102045 provides double the contact density of standard 2.54 mm pitch sockets, fitting 40 contacts (20+20) in a board length of roughly 25.4 mm versus 50 mm for an equivalent 2.54 mm alternative. This density advantage is critical for small form-factor modules in UAVs, wearables, and compact embedded systems.
What is the benefit of the 4.6 mm body height of the M52-5102045 in stacked PCB assemblies?
The 4.6 mm vertical height allows socketed modules to sit close to the host board, maintaining a low overall stack height under 10 mm when a standard module is inserted. In space-constrained enclosures for industrial IoT gateways or embedded vision systems, this low-profile through-board socket saves several millimeters versus taller 7 mm or 8.5 mm alternatives.
When should engineers choose gold over tin contact finish for the M52-5102045 socket in a mission-critical application?
Gold contact finish is preferred over tin when the M52-5102045 will experience more than 50 insertion cycles, operate in humid or corrosive environments, or carry low-level signals below 100 mV where oxide-induced contact resistance increase would cause measurement errors. Gold plating maintains contact resistance below 20 mΩ throughout the connector's rated insertion life.
Which types of plug-in modules or mezzanine cards is the M52-5102045 socket designed to receive?
The M52-5102045 accepts standard 1.27 mm pitch DIL pin headers from compatible Harwin M52 series and similar 0.05 inch pitch mezzanine modules, including small compute-on-modules, RF front-end cards, and sensor daughtercards with 40 pins. The 1.016 inch body length accommodates 20 pins per row across the 0.197 inch body width.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About Harwin
Harwin is a leading electronic component manufacturer. FindMyChip sources Harwin ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”