Rectangular Connectors - Headers, Male Pins

Part Number	Description / PDF	Quantity
M80-8530445 Harwin	CONN HEADER VERT 4POS 2MM	0
M225-5203446 Harwin	CONN HEADER VERT 34POS 2MM	161
G125-MH11005L3P Harwin	CONN HEADER R/A 10POS 1.25MM	154
M80-8542642 Harwin	CONN HEADER VERT 26POS 2MM	236
G125-MV11005M2P Harwin	CONN HEADER VERT 10POS 1.25MM	47
M20-9770546 Harwin	CONN HEADER VERT 5POS 2.54MM	0
M50-3631042R Harwin	CONN HEADER SMD 10POS 1.27MM	132
M80-7004522 Harwin	CONN HEADER VERT 45POS 2MM	0
M52-040023V0345 Harwin	CONN HEADER VERT 3POS 1.27MM	1738
M40-4010446 Harwin	CONN HEADER SMD R/A 4POS 1MM	2320
M80-5122442 Harwin	CONN HEADER SMD 24POS 2MM	105
G125-MV12005L0P Harwin	CONN HEADER VERT 20POS 1.25MM	167
M50-3631042 Harwin	CONN HEADER SMD 10POS 1.27MM	640
M80-5121442 Harwin	CONN HEADER SMD 14POS 2MM	55
M80-5400442 Harwin	CONN HEADER R/A 4POS 2MM	462
M80-8662622 Harwin	CONN HEADER R/A 26POS 2MM	81
M20-9721245 Harwin	CONN HEADER VERT 24POS 2.54MM	0
M52-040023V0745 Harwin	CONN HEADER VERT 7POS 1.27MM	1147
M20-8760342 Harwin	CONN HEADER SMD 6POS 2.54MM	6923
G125-MH10605L5P Harwin	CONN HEADER R/A 6POS 1.25MM	65

Rectangular Connectors - Headers, Male Pins

1. Overview

Rectangular connectors with male pins, commonly referred to as pin headers, are modular electrical interfaces featuring parallel rows of conductive prongs enclosed in a dielectric housing. These components enable reliable signal and power transmission between PCBs (Printed Circuit Boards), cables, and subsystems. Their standardized design, ease of assembly, and scalability make them critical in modern electronics, from consumer devices to industrial machinery.

2. Main Types and Functional Classification

Type	Functional Characteristics	Application Examples
Single-Row Headers	Linear arrangement, 0.1" pitch standard, low-cost solution	Prototyping boards, Arduino shields
Double-Row Headers	Parallel dual-row configuration, higher contact density	Industrial control systems, PLC modules
High-Density Headers	Sub-0.05" pitch, optimized for miniaturization	Smartphones, medical sensors
Right-Angle Headers	90 oriented pins for vertical space optimization	Automotive ECUs, server motherboards

3. Structure and Composition

Typical male pin headers consist of:

Contact System: Phosphor bronze or beryllium copper pins with gold-plated contact areas
Insulation Housing: High-temperature resistant LCP (Liquid Crystal Polymer) or nylon material
Mechanical Features: Polarization keying, anti-wobble design, and retention latches
Mounting Options: Through-hole, SMT (Surface Mount Technology), or press-fit terminations

The contacts are arranged in standardized grids (commonly 2.54mm/0.1" pitch) with polarization features to prevent mis-mating.

4. Key Technical Specifications

Parameter	Importance
Current Rating (Amps/contact)	0.5-10A determines power handling capability
Contact Resistance (m )	10-30m affects signal integrity and power efficiency
Dielectric Withstanding Voltage	100-1000V defines insulation reliability
Operating Temperature Range	-55 C to +125 C ensures environmental durability
Insertion Force (N)	0.5-5N impacts mating cycle longevity

5. Application Fields

Consumer Electronics: Laptops, gaming consoles, smart home devices
Automotive: ECU interconnects, sensor harnesses, infotainment systems
Industrial: CNC machine controllers, robotics interfaces
Medical: Diagnostic equipment, patient monitoring systems
Telecom: Base station hardware, fiber optic transceivers

6. Leading Manufacturers and Products

Manufacturer	Representative Product
TE Connectivity	AMPMODU 205796-1 (0.05" micro pitch header)
Molex	PicoBlade 0510210400 (ultra-compact wire-to-board connector)
Amphenol ICC	10118801-01 (high-speed differential pair header)
JAE Electronics	DF11 Series (0.5mm pitch FPC-to-PCB connector)

7. Selection Guidelines

Key considerations:

Electrical requirements (current/voltage rating)
Space constraints (pitch size and profile height)
Environmental conditions (temperature, vibration, moisture)
Termination method compatibility (through-hole vs SMT)
Expected mating cycles (durability requirements)
Cost vs performance trade-offs

Example: For automotive applications, select headers with AEC-Q200 certification and 3 m gold plating for vibration resistance.

8. Industry Trends

Miniaturization: Development of 0.3mm pitch connectors for wearable devices
High-Speed Performance: Optimization for 10+ Gbps data rates in 5G infrastructure
Modular Design: Integration with hybrid power/signal transmission capabilities
Sustainability: Adoption of halogen-free materials and RoHS compliance
Smart Manufacturing: Embedded RFID tags for connector lifecycle tracking