Terminals - PC Pin, Single Post Connectors

Part Number	Description / PDF	Quantity
09-8027-2-05 Concord Electronics	NON-INSULATED PC PIN TERMINAL	9990
H2181-05 Harwin	CONN PC PIN 1.75MM DIA GOLD 5MM	3000
11069 Keystone Electronics Corp.	CONN PC PIN CIRC 0.040DIA TIN	500
1425-2 Keystone Electronics Corp.	CONN PC PIN CIRC 0.040DIA TIN	474530900
1942-0-00-15-00-00-03-0 Mill-Max	CONN PC PIN CIRC 0.020DIA GOLD	16437
5035-0-00-15-00-00-33-0 Mill-Max	CONN PC PIN CIRC 0.025DIA GOLD	15267
3137-3-00-34-00-00-08-0 Mill-Max	CONN PC PIN CIRC .030DIA GOLD	1360
4395-0-00-15-00-00-08-0 Mill-Max	.699" LONG SWAGE PIN	1710
3149-2-00-15-00-00-08-0 Mill-Max	CONN PC PIN CIRC 0.040DIA GOLD	37764
1352-1 Keystone Electronics Corp.	CONN PC PIN CIRC 0.031DIA GOLD	13387
8940-0-00-34-00-00-03-0 Mill-Max	CONN PC PIN	896
1968-3 Keystone Electronics Corp.	CONN PC PIN CIRC 0.017DIA TIN	8900
09-8028-1-05 Concord Electronics	NON-INSULATED PC PIN TERMINAL	10000
3112-3-00-21-00-00-08-0 Mill-Max	CONN PC PIN CIRC .024DIA GOLD	0
1447-4 Keystone Electronics Corp.	CONN PC PIN CIRC 0.080DIA GOLD	1200
3920-0-01-15-00-00-08-0 Mill-Max	CONN PC PIN CIRC 0.040DIA GOLD	3435
3137-2-00-80-00-00-08-0 Mill-Max	CONN PC PIN CIRC	0
3-928776-2 TE Connectivity AMP Connectors	CONN PC PIN SQUARE 0.025 TIN	0
2381-0-00-15-00-00-33-0 Mill-Max	CONN PC PIN CIRC 0.050DIA GOLD	3287
2104-1-01-01-00-00-07-0 Mill-Max	CONN PC PIN CIRC .047DIA TINLEAD	0

Terminals - PC Pin, Single Post Connectors

1. Overview

PC Pin and Single Post Connectors are critical components in electrical systems, providing reliable termination points for wire connections. PC Pin connectors feature male pins designed for printed circuit board (PCB) mounting, while Single Post Connectors utilize a single terminal post for wire attachment. These connectors enable efficient signal and power transmission across diverse industries, from consumer electronics to industrial automation.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
PC Pin Connectors	Right-angle or straight PCB-mount pins, gold-plated contacts, snap-in retention	Computer motherboards, network switches, power supplies
Single Post Connectors	Single screw/nut termination, insulation displacement, vibration-resistant	Lighting fixtures, HVAC systems, control panels
High-Current PC Pins	Large contact area, heat-resistant materials	Electric vehicle charging stations, industrial motors
Microminiature Posts	Sub-5mm terminal size, surface-mount design	Medical sensors, wearable devices

3. Structure and Components

Typical construction includes:

Conductive Core: Phosphor bronze or beryllium copper with plating (gold, tin, or nickel)
Insulation Housing: UL94 V-0 rated thermoplastic or glass-reinforced nylon
Retention Mechanism: Integral locking tabs (PC Pin) or screw terminals (Single Post)
Environmental Sealing: Optional silicone gaskets for IP67 protection

4. Key Technical Parameters

Parameter	Importance	Typical Range
Current Rating	Determines power handling capability	1-50A
Contact Resistance	Impacts signal integrity and power loss	1-10m
Dielectric Strength	Ensures electrical isolation safety	500-2500VAC
Operating Temperature	Defines environmental suitability	-55 C to +150 C
Mating Cycles	Indicates mechanical durability	500-10,000 cycles

5. Application Fields

Consumer Electronics: Smartphone battery connectors, laptop power ports
Industrial Automation: PLC I/O modules, sensor interface terminals
Transportation: Automotive ECU connectors, railcar control systems
Energy Systems: Solar inverter DC terminals, battery storage racks

6. Leading Manufacturers

Manufacturer	Representative Product	Key Features
TE Connectivity	AMP PC Blade	12V high-current automotive power distribution
Phoenix Contact	ST Single Post	Push-in wire connection technology
Molex	Mini50 PC Pin	0.5mm pitch for compact medical devices
Yazaki	WS250 Single Post	Automotive-grade vibration resistance

7. Selection Recommendations

Key considerations:

Current/voltage requirements vs. conductor cross-sectional area
Space constraints (height profile for PCB-mounted types)
Environmental factors (temperature, humidity, vibration)
Compliance standards (RoHS, UL, IEC specifications)
Tooling requirements for field installation

Example: For a 24V industrial control application, select IP67-rated Phoenix Contact ST series with screw terminal for 2.5mm wire.

8. Industry Trends

Current developments include:

Miniaturization: 0.8mm pitch PC Pin connectors for 5G infrastructure
Smart integration: Connectors with built-in current sensing capabilities
Material innovation: Graphene-enhanced contacts for 30% higher conductivity
Automated assembly: Self-aligning posts for robotic manufacturing
Environmental focus: Halogen-free insulation materials compliant with REACH regulations

Market forecasts predict 6.2% CAGR through 2028 driven by automotive electrification and IoT device growth.