2.54mm x 2.54mm Dual Row Vertical SMT Female Header Surface Mount PCB Connector-ELETE | Professional Connector Manufacturer

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2.54mm x 2.54mm Dual Row Vertical SMT Female Header Surface Mount PCB Connector

High-Reliability Four-Point Contact Surface Mount (SMT) Female Header for Compact PCB Stacking

HFNDM55-A001

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HFNDM55-A001

Serial Number：HFNDM55-A001

Connector & Cable

Board to board connector

Female Header

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HFNDM55 series is a 2.54mm pitch, dual-row vertical SMT female header designed with a 5.50mm profile and a high-reliability four-point contact system, optimized for automated pick-and-place and vibration-resistant connections.

Feature	Specification
Model	HFNDM55-A001
Pitch	2.54mm(0.1'')
Gender	Female Header, Socket Header, Receptacle
Special Design	Four-Point Contacts
Rows	Dual Row
Insulator Height	5.5mm
Number of Pins	2 to 40 Pins per Row
Mounting Type	SMT / Surface Mount (Vertical)
Current Rating	3 A, 4A, 5A or as required
Insulation Resistance	1000MΩ Min
Dielectric Withstanding	600V AC
Contact Resistance	20mΩ Max
Operating Temperature	-40℃ to +105℃
Contact Material	Brass / Phosphor Bronze
Insulation Material	High-temp Polyester,UL94V-0 LCP/NL6T/PA9T
·All materials are RoHS and REACH compliant. Halogen-free options are available.

Key Features & Advantage

Four-Point Contact Reliability: Features an engineered four-point contact design that provides constant contact pressure and ultra-low contact resistance, ensuring superior performance against shock and vibration.
SMT Optimized with Pick-and-Place Support: Designed for surface mount technology (SMT) with standard co-planarity (0.15mm Max) and optional Cap & Tape/Reel packaging for seamless, high-speed automated assembly.
High-Temperature LCP/NL6T Housing: Molded from premium UL 94V-0 rated materials (LCP or NL6T) to safely withstand the high thermal stress of lead-free reflow soldering processes.
Space-Efficient 5.50mm Profile: The 5.50mm insulator height offers a low-profile vertical connection, making it excellent for dense, multi-board stacked product configurations.
Flexible Configurable Options: Offers 2 to 40 pins per row, customizable pin/wing widths, various platings (Gold Flash, 3U" Gold, Tin, Select Plating), and high-durability Phosphor Bronze contacts.

Drawing

Classic Applications

Industrial Automation & Electronics: Industrial controllers, PLC systems, high-speed SMT tracking boards, and smart sensors exposed to vibration.
Automotive Systems: In-vehicle infotainment systems, telemetry devices, and electronic control units (ECUs).
Telecommunications & Networking: High-density network switchboards, routers, and embedded server daughterboards.
Smart Home & IoT Gateways: Compact smart meters, home automation control hubs, and wireless communication modules.
Medical Instruments: Patient monitoring systems, portable diagnostic tools, and lab equipment requiring highly stable and clean signal loops.