Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
610120249221 Würth Elektronik Midcom	CONN HDR 20POS 0.1 GOLD SMD R/A	490
690367292676 Würth Elektronik Midcom	WR-MM FEMALE SMT CONNECTOR WITH	1600
690367281876 Würth Elektronik Midcom	WR-MM FEMALE SMT CONNECTOR WITH	1600
690368182272 Würth Elektronik Midcom	WR-MM FEMALE ANGLED CONNECTOR WI	38
690367191472 Würth Elektronik Midcom	WR-MM FEMALE CONNECTOR WITH LATC	50
690367290876 Würth Elektronik Midcom	CONN RCPT 8POS 0.1 TIN SMD	200
690367190672 Würth Elektronik Midcom	WR-MM FEMALE CONNECTOR WITH LATC	94
690367290476 Würth Elektronik Midcom	CONN RCPT 4POS 0.1 TIN SMD	1177
610126249221 Würth Elektronik Midcom	CONN HDR 26POS 0.1 GOLD SMD R/A	0
690367191672 Würth Elektronik Midcom	WR-MM FEMALE CONNECTOR WITH LATC	46
613064243121 Würth Elektronik Midcom	CONN HDR 64POS 0.1 GOLD PCB R/A	126
690367182072 Würth Elektronik Midcom	CONN RCPT 20POS 0.1 TIN PCB	72
61031221821 Würth Elektronik Midcom	2.54MM_SOCKET HEADER_SMT_STRAIGH	1031
61031621821 Würth Elektronik Midcom	2.54MM_SOCKET HEADER_SMT_STRAIGH	1127
690368190472 Würth Elektronik Midcom	WR-MM FEMALE ANGLED CONNECTOR WI	118
690368181272 Würth Elektronik Midcom	WR-MM FEMALE ANGLED CONNECTOR WI	66
690367190472 Würth Elektronik Midcom	WR-MM FEMALE CONNECTOR WITH LATC	118
61031421821 Würth Elektronik Midcom	2.54MM_SOCKET HEADER_SMT_STRAIGH	900
690367181672 Würth Elektronik Midcom	WR-MM FEMALE CONNECTOR W/O LATCH	52
690367281676 Würth Elektronik Midcom	WR-MM FEMALE SMT CONNECTOR WITH	1595

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