Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
M20-7810445 Harwin	CONN RCPT 8POS 0.1 GOLD SMD	378
M50-3000645 Harwin	CONN RCPT 12POS 0.05 GOLD PCB	1199
M83-LFT1F2N18-0000-000 Harwin	CONN RCPT 18POS 0.079 GOLD PCB	60
M20-7820346 Harwin	CONN RCPT 3POS 0.1 TIN PCB	6078
M50-3130345R Harwin	CONN RCPT 3POS 0.05 GOLD SMD	2027
M50-3113042 Harwin	CONN RCPT 60POS 0.05 GOLD SMD	130
M80-4001242 Harwin	CONN RCPT 12POS 0.079 GOLD PCB	32
M50-4300745 Harwin	CONN RCPT 14POS 0.05 GOLD SMD	0
M80-8870605 Harwin	CONN RCPT 6POS 0.079 GOLD PCB	314
M20-7811045 Harwin	CONN RCPT 20POS 0.1 GOLD SMD	0
M50-3202045 Harwin	CONN RCPT 40P 0.05 GOLD PCB R/A	61
M20-7811245 Harwin	CONN RCPT 24POS 0.1 GOLD SMD	335
M22-7141042 Harwin	CONN RCPT 20POS 0.079 GOLD PCB	1987
M50-3130245 Harwin	CONN RCPT 2POS 0.05 GOLD SMD	3255
M20-7910542R Harwin	CONN RCPT 5POS 0.1 GOLD SMD R/A	230
M50-3030842 Harwin	CONN RCPT 8POS 0.05 GOLD PCB	118
M50-3030642 Harwin	CONN RCPT 6POS 0.05 GOLD PCB	0
M52-5152545 Harwin	CONN RCPT 50POS 0.05 GOLD SMD	0
G125-FS12605L0P Harwin	CONN RCPT 26POS 0.049 GOLD SMD	297
G125-FS11005L0P Harwin	CONN RCPT 10POS 0.049 GOLD SMD	255

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