Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
M50-3101045 Harwin	CONN RCPT 20POS 0.05 GOLD SMD	0
G125-FS12005F2P Harwin	CONN RCPT 20POS 0.049 GOLD SMD	59
M20-7870346 Harwin	CONN RCPT 6POS 0.1 TIN SMD	954
M20-7831242 Harwin	CONN RCPT 24POS 0.1 GOLD PCB	258
M80-6810645 Harwin	CONN RCPT 6POS 0.079 GOLD SMD	0
M50-3130645 Harwin	CONN RCPT 6POS 0.05 GOLD SMD	1399
G125-FV20605L0P Harwin	CONN RCPT 6POS 0.049 GOLD PCB	61
M55-6015042R Harwin	CONN RCPT 50POS 0.05 GOLD SMD	207
M80-4102001 Harwin	CONN RCPT 20POS 0.079 GOLD PCB	73
M80-8871205 Harwin	CONN RCPT 12POS 0.079 GOLD PCB	0
M55-6005042R Harwin	CONN RCPT 50POS 0.05 GOLD SMD	0
M52-5000345 Harwin	CONN RCPT 3POS 0.05 GOLD PCB	1321
G125-FV23405L0P Harwin	CONN RCPT 34POS 0.049 GOLD PCB	10
M52-5010345 Harwin	CONN RCPT 3POS 0.05 GOLD PCB	0
M20-7810945 Harwin	CONN RCPT 18POS 0.1 GOLD SMD	0
M80-8872005 Harwin	CONN RCPT 20POS 0.079 GOLD PCB	105
G125-FS10605F1P Harwin	CONN RCPT 6POS 0.049 GOLD SMD	1
M50-3000745 Harwin	CONN RCPT 14POS 0.05 GOLD PCB	933
G125-FS11605F1P Harwin	CONN RCPT 16POS 0.049 GOLD SMD	8
M52-5001545 Harwin	CONN RCPT 15POS 0.05 GOLD PCB	672

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