Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
71609-303LF Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.1 GOLD SMD R/A	0
75915-302LF Storage & Server IO (Amphenol ICC)	CONN RCPT 2POS 0.1 GOLD PCB	298
76308-108LF Storage & Server IO (Amphenol ICC)	CONN RCPT 8POS 0.1 GOLD PCB	85
68683-327LF Storage & Server IO (Amphenol ICC)	CONN RCPT 54POS 0.1 GOLD PCB	200
68685-314LF Storage & Server IO (Amphenol ICC)	CONN RCPT 14POS 0.1 GOLD PCB	325
71991-308LF Storage & Server IO (Amphenol ICC)	CONN RCPT 16POS 0.1 GOLD PCB	503
76341-304LF Storage & Server IO (Amphenol ICC)	CONN RCPT 4POS 0.1 GOLD PCB	217
71609-308LF Storage & Server IO (Amphenol ICC)	CONN RCPT 16POS 0.1 GOLD SMD R/A	348
20021321-00020C4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 20POS 0.05 GOLD SMD	3992
89882-306LF Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.1 GOLD PCB R/A	381
91601-309LF Storage & Server IO (Amphenol ICC)	CONN RCPT 9POS 0.1 GOLD SMD	485
68683-613 Storage & Server IO (Amphenol ICC)	CONN RCPT 26POS 0.1 GOLD PCB	425
89898-310ALF Storage & Server IO (Amphenol ICC)	CONN RCPT 20POS 0.1 GOLD SMD	2280
89898-320LF Storage & Server IO (Amphenol ICC)	CONN RCPT 40POS 0.1 GOLD SMD	2348
71609-307LF Storage & Server IO (Amphenol ICC)	CONN RCPT 14POS 0.1 GOLD SMD R/A	0
63453-128LF Storage & Server IO (Amphenol ICC)	CONN RCPT 28POS 0.079 GOLD PCB	0
87606-325LF Storage & Server IO (Amphenol ICC)	CONN RCPT 50POS 0.1 GOLD PCB	0
68683-304LF Storage & Server IO (Amphenol ICC)	CONN RCPT 8POS 0.1 GOLD PCB	775
76342-325LF Storage & Server IO (Amphenol ICC)	CONN RCPT 50POS 0.1 GOLD PCB	246
71991-314LF Storage & Server IO (Amphenol ICC)	CONN RCPT 28POS 0.1 GOLD PCB	220

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