Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
M20-7892046 Harwin	CONN RCPT 20POS 0.1 TIN PCB R/A	0
M83-LFT1F2N96-0000-000 Harwin	CONN RCPT 96POS 0.079 GOLD PCB	65
M50-3122045 Harwin	CONN RCPT 40POS 0.05 GOLD SMD	124
M20-7890646 Harwin	CONN RCPT 6POS 0.1 TIN PCB R/A	148
M50-3030342 Harwin	CONN RCPT 3POS 0.05 GOLD PCB	0
M40-3100545R Harwin	CONN RCPT 10POS 0.039 GOLD SMD	2920
M55-6105042R Harwin	CONN RCPT 50P 0.05 GOLD SMD R/A	686
M50-3122545 Harwin	CONN RCPT 50POS 0.05 GOLD SMD	730
M20-7830246 Harwin	CONN RCPT 4POS 0.1 TIN PCB	1303
M20-7890642 Harwin	CONN RCPT 6POS 0.1 GOLD PCB R/A	0
M80-8500842 Harwin	CONN RCPT 8POS 0.079 GOLD PCB	20
G125-FV25005L0P Harwin	CONN RCPT 50POS 0.049 GOLD PCB	11
M50-3125045 Harwin	CONN RCPT 100POS 0.05 GOLD SMD	56
M20-7820246 Harwin	CONN RCPT 2POS 0.1 TIN PCB	1946
M50-3140445R Harwin	CONN RCPT 4POS 0.05 GOLD SMD	747
M50-3200645 Harwin	CONN RCPT 12P 0.05 GOLD PCB R/A	283
M80-8400742 Harwin	CONN RCPT 7POS 0.079 GOLD PCB	0
M20-7891046 Harwin	CONN RCPT 10POS 0.1 TIN PCB R/A	414
M22-7140442 Harwin	CONN RCPT 8POS 0.079 GOLD PCB	114
M50-3140645 Harwin	CONN RCPT 6POS 0.05 GOLD SMD	602

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