Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
66925-025 Storage & Server IO (Amphenol ICC)	CONN RCPT 50POS 0.1 GOLD PCB R/A	225
76314-120LF Storage & Server IO (Amphenol ICC)	CONN RCPT 40POS 0.1 GOLD PCB	30
76308-106LF Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.1 GOLD PCB	90
76308-103LF Storage & Server IO (Amphenol ICC)	CONN RCPT 3POS 0.1 GOLD PCB	15780
89898-316LF Storage & Server IO (Amphenol ICC)	CONN RCPT 32POS 0.1 GOLD SMD	507
20021311-00012T4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 12POS 0.05 GOLD PCB	0
75915-320LF Storage & Server IO (Amphenol ICC)	CONN RCPT 20POS 0.1 GOLD PCB	0
91596-110LF Storage & Server IO (Amphenol ICC)	CONN RCPT 10POS 0.079 GOLD SMD	6468
10136353-05111LF Storage & Server IO (Amphenol ICC)	CONN RCPT 5POS 0.059 TIN SMD R/A	441
71991-802LF Storage & Server IO (Amphenol ICC)	CONN RCPT 4POS 0.1 GOLD PCB	281
76341-402LF Storage & Server IO (Amphenol ICC)	CONN RCPT 2POS 0.1 TIN PCB	490
20021321-00014T4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 14POS 0.05 GOLD SMD	2350
87606-406LF Storage & Server IO (Amphenol ICC)	CONN RCPT 12POS 0.1 TIN PCB	234
20021323-00010D1LF Storage & Server IO (Amphenol ICC)	CONN RCPT 10POS 0.05 GOLD SMD	0
66527-025LF Storage & Server IO (Amphenol ICC)	CONN RCPT 50POS 0.1 GOLD PCB R/A	200
71607-310LF Storage & Server IO (Amphenol ICC)	CONN RCPT 10POS 0.1 GOLD SMD R/A	527
20021311-00008T4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 8POS 0.05 GOLD PCB	5050
87023-605LF Storage & Server IO (Amphenol ICC)	CONN RCPT 10POS 0.05 GOLD SMD	2520
66953-010LF Storage & Server IO (Amphenol ICC)	CONN RCPT 20POS 0.1 GOLD PCB	567
76341-405LF Storage & Server IO (Amphenol ICC)	CONN RCPT 5POS 0.1 TIN PCB	1104

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