Rectangular Connectors - Headers, Receptacles, Female Sockets

Image	Part Number	Description / PDF	Quantity	Rfq
	20021323-00016T4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 16POS 0.05 GOLD SMD	0
	76341-345LF Storage & Server IO (Amphenol ICC)	CONN RCPT 45POS 0.1 GOLD PCB	0
	91614-404ALF Storage & Server IO (Amphenol ICC)	CONN RCPT 4POS 0.1 TIN SMD	0
	10131937-214RLF Storage & Server IO (Amphenol ICC)	MINITEK RECEP DR VCC SMT	0
	65781-021 Storage & Server IO (Amphenol ICC)	CONN RCPT 42POS 0.1 GOLD PCB	0
	20021321-00006T4LF Storage & Server IO (Amphenol ICC)	CONN RCPT 6POS 0.05 GOLD SMD	0
	10131936-108ULF Storage & Server IO (Amphenol ICC)	MINITEK RECEP DR VCC TMT	0
	20021311-00024T8LF Storage & Server IO (Amphenol ICC)	CONN RCPT 24POS 0.05 GOLD PCB	0
	67227-015LF Storage & Server IO (Amphenol ICC)	CONN RCPT 30POS 0.1 GOLD PCB R/A	0
	10131937-922ULF Storage & Server IO (Amphenol ICC)	MINITEK RECEP DR VCC SMT	0
	55508-150TRLF Storage & Server IO (Amphenol ICC)	CONN RCPT 0.079 GOLD SMD	0
	55508-026TRLF Storage & Server IO (Amphenol ICC)	CONN RCPT 0.079 GOLD SMD	0
	89898-410AHFLF Storage & Server IO (Amphenol ICC)	CONN RCPT 20POS 0.1 TIN SMD	0
	10131931-106ULF Storage & Server IO (Amphenol ICC)	CONN RCPT 6P 0.079 GOLD SMD R/A	0
	10131931-221ULF Storage & Server IO (Amphenol ICC)	CONN RCPT 21P 0.079 GOLD SMD R/A	0
	10131934-922ULF Storage & Server IO (Amphenol ICC)	CONN RCPT 22POS 0.079 TIN PCB	0
	20021311-00084T8LF Storage & Server IO (Amphenol ICC)	CONN RCPT 84POS 0.05 GOLD PCB	0
	71607-437LF Storage & Server IO (Amphenol ICC)	CONN RCPT 37POS 0.1 TIN SMD R/A	0
	76342-411LF Storage & Server IO (Amphenol ICC)	CONN RCPT 22POS 0.1 TIN PCB	0
	20021321-00088D8LF Storage & Server IO (Amphenol ICC)	CONN RCPT 88POS 0.05 GOLD SMD	0

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