2.54mm Pitch Bottom Entry Dual Row Female Header, Wide DIP PCB Connector, HFNDT71 Series-ELETE | Professional Connector Manufacturer

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2.54mm Pitch Bottom Entry Dual Row Female Header, Wide DIP PCB Connector, HFNDT71 Series

Double-Row Vertical Bottom Entry DIP Female Socket for Pass-Through Stacking

HFNDT71-T001

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HFNDT71-T001

Serial Number：HFNDT71-T001

Connector & Cable

Board to board connector

Female Header

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A premium 2.54mm pitch dual-row vertical DIP female header engineered with a 7.62mm wide footprint and a unique bottom-entry design, enabling secure pass-through board stacking from the underside of the PCB.

Feature	Specification
Model	HFNDT71-T001
Pitch	2.54 mm / 0.1 inch / 0.1"
Gender	Female Header, Socket Header, Receptacle
Rows	Dual Rows
Entry Type	Bottom Entry Type
Insulator Height	7.1mm
Number of Pins	2 to 40 Pins per Row
Mounting Type	DIP Through-Hole
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
Suggested Mating Pin Length	5.5mm to 7.0mm
·All materials are RoHS and REACH compliant. Halogen-free options are available.

Key Features & Advantage

Pass-Though Bottom Entry Design: Allows mating pins to pass completely through the bottom of the PCB layout, enabling multi-tier sandwich board configurations and space-optimized vertical routing.
Wide 7.62mm Footprint Stability: Features out-rigger style 7.62mm leg spacing, delivering exceptional mechanical seating stability and resistance against tilting or physical shear forces.
Premium Dual-Beam Receptacles: Formed with high-reliability Phosphor Bronze to offer superior elastic fatigue resistance and consistent retention force under repetitive insertion cycles.
Rugged 7.10mm Profile Body: The 7.10mm molded structure provides a highly durable housing environment for long mating pins while keeping parallel boards rigidly supported.
High Thermal Tolerances: Optional LCP or T-NL6T composite housings ensure complete protection against blistering or shape deformation under industrial wave soldering.

Drawing

Classic Applications

Industrial Automation Modules: Parallel PLC mainboard integration, expansion controller stacks, and multi-tier motor control systems.
Power Supply Units & Utility Meters: Smart electricity grids, power management boards, and inverter circuits requiring underlying connections.
Telecommunications & Servers: Stacked router control blocks, industrial backplane switching modules, and daughtercard links.
Automotive Sub-Systems: Multi-layer dashboard logic units and complex sensor consolidation panels with underside entries.