M20-7850542 Harwin Connector (Other) In Stock
Harwin M20-7850542 is a bottom-entry board socket connector with tin-over-nickel contact finish, measuring 0.52 × 0.205 × 0.197 inch body and rated RoHS-compliant. Available from stock with worldwide shipping.
- Manufacturer
- Harwin
- Package
- Other
- Pin Count
- 10
- Lifecycle
- ACTIVE
- Datasheet
- M20-7850542 Datasheet PDF
- Category
- Connector
- Price
- From $0.6850(MOQ 2021)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of M20-7850542?
- Bottom-entry socket configuration for right-angle PCB mating in space-constrained enclosures
- Tin (Sn) over Nickel (Ni) barrier contact finish for reliable solderability and corrosion resistance
- Compact body dimensions of 0.52 inch length for high-density board connector placement
- RoHS-compliant and Pb-free construction meeting modern environmental standards
- Board connector style with durable socket shell compatible with standard mating header pins
What is M20-7850542 used for?
The M20-7850542 is used in PCB-to-PCB and wire-to-board interconnect applications where bottom-entry mating is required for low-profile enclosure designs. It suits compact consumer electronics, handheld instruments, and industrial control modules where a 0.52-inch socket provides reliable electrical connections without increasing board height. The tin-over-nickel termination finish ensures strong solder joints in reflow or hand-soldering assembly processes.
What are the specifications of M20-7850542?
| Pbfree Code | Yes |
| YTEOL | 9.1 |
| Additional Feature | BOTTOM ENTRY |
| Body Breadth | 0.205inch |
| Body Depth | 0.197inch |
| Body Length | 0.52inch |
| Body/Shell Style | SOCKET |
| Connector Type | BOARD 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 | 20mΩ |
| Contact Style | SQ PIN-SKT |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| Insertion Force-Max | 2.0016N |
| Insulation Resistance | 1000000000Ω |
| Insulator Color | BLACK |
| Insulator Material | POLYAMIDE |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Contact Pitch | 0.1inch |
| 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 | 4 |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| PCB Contact Row Spacing | 2.54mm |
| Rated Current (Signal) | 3A |
| Reference Standard | UL |
| Terminal Length | 0.118inch |
| Terminal Pitch | 2.54mm |
| Termination Type | SOLDER |
| Total Number of Contacts | 10 |
| UL Flammability Code | 94V-0 |
| Withdrawl Force-Min | .30024N |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
| Country of Origin | Taiwan |
Where can I find the M20-7850542 datasheet?
M20-7850542 Datasheet DownloadOfficial datasheet from Harwin
What are equivalent replacements for M20-7850542?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the physical dimensions of the M20-7850542 connector body?
The M20-7850542 has a body length of 0.52 inch (approximately 13.2 mm), a breadth of 0.205 inch (about 5.2 mm), and a depth of 0.197 inch (about 5.0 mm). These compact dimensions make it suitable for dense PCB layouts where connector footprint must be minimized while maintaining a robust bottom-entry socket interface.
What contact finish does the M20-7850542 use, and why does it matter for soldering?
The M20-7850542 uses tin (Sn) over a nickel (Ni) barrier layer for its termination contacts. Nickel acts as a diffusion barrier preventing tin from reacting with the copper substrate, which extends solder joint reliability. Tin terminations are compatible with both lead-free and standard SAC305 solder paste used in modern reflow assembly processes.
In what assembly orientation does the M20-7850542 mount on a PCB?
The M20-7850542 is a bottom-entry connector, meaning the mating plug inserts from the bottom face of the PCB rather than from the top. This orientation is used in stacked board assemblies, card-on-board configurations, or enclosures where the connector must mate with a cable or adjacent board positioned beneath the primary PCB, reducing overall assembly height.
Is the M20-7850542 RoHS compliant and suitable for modern lead-free assembly lines?
Yes, the M20-7850542 carries a Pb-free code of Yes and is fully RoHS-compliant. Its tin-over-nickel contact finish is compatible with lead-free soldering processes at reflow temperatures up to approximately 260 °C, meeting the requirements of IPC J-STD-020 and modern green manufacturing standards for consumer, industrial, and telecommunications equipment.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 2021+ | $0.8830 | $1784.54 |
| 3032+ | $0.6990 | $2119.37 |
| 4042+ | $0.6850 | $2768.77 |
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