Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
M80-4001205 Harwin	CONN RCPT 12POS 0.079 GOLD PCB	0
M80-4100642 Harwin	CONN RCPT 6POS 0.079 GOLD PCB	1176
M80-7075105 Harwin	CONN RCPT 51POS 0.079 GOLD PCB	0
M20-7870646 Harwin	CONN RCPT 12POS 0.1 TIN SMD	0
M20-7860346 Harwin	CONN RCPT 3POS 0.1 TIN SMD	0
M20-7862046 Harwin	CONN RECPT 2.54MM SMT 20POS	0
M50-3100645 Harwin	CONN RCPT 12POS 0.05 GOLD SMD	0
G125-FS11605F1R Harwin	CONN RECPT VERT SMT 16POS	0
M20-7870442 Harwin	CONN RCPT 8POS 0.1 GOLD SMD	0
M80-7900345 Harwin	CONN RCPT 3POS 0.079 GOLD PCB	0
M80-4201642 Harwin	CONN RCPT 16POS 0.079 GOLD PCB	0
M80-4210605 Harwin	CONN FEMALE VERT 6POS	0
M50-3101445 Harwin	CONN RCPT 28POS 0.05 GOLD SMD	0
M80-4021405 Harwin	CONN FEMALE VERT 14POS	0
M22-7141842 Harwin	CONN RCPT 36POS 0.079 GOLD PCB	0
M20-7821346 Harwin	CONN RCPT 13POS 0.1 TIN PCB	0
M40-3102045R Harwin	CONN RCPT 40POS 0.039 GOLD SMD	1697
M80-4063442 Harwin	CONN RCPT 34POS 0.079 GOLD PCB	0
M80-8504442 Harwin	CONN RCPT 44POS 0.079 GOLD PCB	0
M83-LFT2F2N27-0000-000 Harwin	DATAMATE J-TEK 3-ROW FEMALE VERT	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