Rectangular Connectors - Headers, Receptacles, Female Sockets

Part Number	Description / PDF	Quantity
71991-807LF Storage & Server IO (Amphenol ICC)	CONN RCPT 14POS 0.1 GOLD PCB	462
91596-114LF Storage & Server IO (Amphenol ICC)	CONN RCPT 14POS 0.079 GOLD SMD	337
66951-017LF Storage & Server IO (Amphenol ICC)	CONN RCPT 17POS .100 SGL STR PCB	0
20021321-00016T4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 16POS 0.05 GOLD SMD	2132
71609-317LF Storage & Server IO (Amphenol ICC)	CONN RCPT 34POS 0.1 GOLD SMD R/A	0
55510-150TRLF Storage & Server IO (Amphenol ICC)	CONN RCPT 50POS 0.079 GOLD SMD	730
63453-116LF Storage & Server IO (Amphenol ICC)	CONN RCPT 16POS 0.079 GOLD PCB	6939
75915-305LF Storage & Server IO (Amphenol ICC)	CONN RCPT 5POS 0.1 GOLD PCB	377
20021321-00090T4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 90POS 0.05 GOLD SMD	0
55508-106LF Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.079 GOLD SMD	4059
87606-303LF Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.1 GOLD PCB	640
66953-018LF Storage & Server IO (Amphenol ICC)	CONN RCPT 36POS 0.1 GOLD PCB	0
71991-315LF Storage & Server IO (Amphenol ICC)	CONN RCPT 30POS 0.1 GOLD PCB	205
71991-312LF Storage & Server IO (Amphenol ICC)	CONN RCPT 24POS 0.1 GOLD PCB	65
89898-308LF Storage & Server IO (Amphenol ICC)	CONN RCPT 16POS 0.1 GOLD SMD	928
76342-314LF Storage & Server IO (Amphenol ICC)	CONN RCPT 28POS 0.1 GOLD PCB	334
63453-138LF Storage & Server IO (Amphenol ICC)	CONN RCPT 38POS 0.079 GOLD PCB	0
68684-306 Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.1 GOLD PCB	950
55508-112LF Storage & Server IO (Amphenol ICC)	CONN RCPT 12POS 0.079 GOLD SMD	0
91601-306LF Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.1 GOLD SMD	1458

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