Rectangular Connectors - Headers, Receptacles, Female Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	M80-4010642 Harwin	CONN RCPT 6POS 0.079 GOLD PCB	0
	G125-FS13405F1R Harwin	CONN RECPT VERT SMT 34POS	0
	M50-3120845R Harwin	CONN SOCKET 1.27MM 16POS	0
	M80-7701242 Harwin	CONN RCPT 12POS 0.079 GOLD PCB	0
	M80-7074505 Harwin	CONN RCPT 45POS 0.079 GOLD PCB	0
	M80-4201842 Harwin	2X9POS DIL FEMALE VERTICAL CONN	0
	M80-4014242 Harwin	CONN RCPT 42POS 0.079 GOLD PCB	0
	M20-7860546 Harwin	CONN RCPT 5POS 0.1 TIN SMD	0
	M83-LFT1F2N54-0000-000 Harwin	CONN RCPT 54POS 0.079 GOLD PCB	0
	M80-4111605 Harwin	8+8 WAY FEMALE PC TAIL 4.5MM	0
	M50-3100845 Harwin	CONN RCPT 16POS 0.05 GOLD SMD	0
	M80-4112042 Harwin	CONN RCPT 20POS 0.079 GOLD PCB	0
	B5741-208-F-T-0 Harwin	4+4 POS. FEMALE DIL	0
	M50-3100345 Harwin	CONN RCPT 6POS 0.05 GOLD SMD	0
	M80-8970601 Harwin	CONN RCPT 6POS 0.079 GOLD PCB	0
	M20-7882546 Harwin	CONN RCPT 50POS 0.1 TIN PCB R/A	0
	M80-6811445 Harwin	CONN RCPT 14POS 0.079 GOLD SMD	0
	M20-7861646 Harwin	CONN RECPT 2.54MM SMT 16POS	0
	M80-4011442 Harwin	CONN RCPT 14POS 0.079 GOLD PCB	0
	G125-FS10605F1R Harwin	CONN RECPT VERT SMT 6POS	0

Rectangular Connectors - Headers, Receptacles, Female Sockets

1. Overview

Rectangular connectors are modular electrical components designed to establish reliable connections between PCBs (Printed Circuit Boards) or electronic systems. This category includes headers (male pins), receptacles (female contacts), and sockets, which enable signal/power transmission while maintaining mechanical stability. Their standardized designs and versatility make them critical in modern electronics, from consumer devices to industrial machinery.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Single-Row Headers	Linear arrangement of male pins	Arduino shields, sensor modules
Double-Row Headers	Dual-row pin configuration for higher density	Computer motherboards, industrial controllers
Right-Angle Receptacles	90 orientation for space-constrained designs	Compact medical devices, automotive sensors
Stacking Female Sockets	Vertical interconnection for multi-board systems	3D printer control stacks, test equipment

3. Structure and Components

Typical construction includes:

Contact Terminals: Phosphor bronze or beryllium copper with gold/tin plating for conductivity
Insulation Housing: Thermoplastic materials (e.g., LCP, Nylon 6/6) for dielectric strength
Retention Mechanism: Polarization keys and locking tabs to prevent misalignment
Mounting Options: Through-hole or surface-mount (SMT) configurations

4. Key Technical Specifications

Parameter	Value/Range	Importance
Current Rating	0.5A - 10A per contact	Determines power transmission capacity
Contact Resistance	5-20m	Affects signal integrity and thermal performance
Dielectric Strength	500V - 2500V AC	Ensures electrical safety and insulation reliability
Operating Temperature	-55 C to +125 C	Defines environmental tolerance
Mating Cycles	100 - 10,000 cycles	Indicates mechanical durability

5. Application Fields

Consumer Electronics: Smartphones, laptops, gaming consoles
Industrial Automation: PLCs, motor drives, sensor hubs
Telecommunications: 5G base stations, network routers
Medical Devices: Diagnostic equipment, patient monitors
Automotive: ECU connectors, ADAS sensors

6. Leading Manufacturers and Products

Manufacturer	Representative Product
TE Connectivity	MicroSpeed Rectangular Connectors
Molex	PicoBlade 0.8mm Headers
Amphenol	MICRO CONECTA Surface Mount Sockets
Samtec	QTRADE High-Speed Receptacles

7. Selection Guidelines

Key considerations:

Electrical requirements (current/voltage levels)
PCB space constraints and stacking needs
Environmental factors (temperature, vibration, moisture)
Cost-effectiveness vs. long-term reliability
Compliance with standards (IPC, RoHS, REACH)

Example: For automotive applications, prioritize connectors with high vibration resistance (e.g., TE Connectivity's AMPMODU series) and AEC-Q200 certification.

8. Industry Trends

Emerging directions include:

Miniaturization: Sub-1.0mm pitch connectors for wearable devices
High-speed capabilities: 10+ Gbps data rates for 5G infrastructure
Enhanced reliability: Hermetic sealing for aerospace applications
Modular designs: Tool-less hot-swap systems for data centers