Terminals - Quick Connects, Quick Disconnect Connectors

Part Number	Description / PDF	Quantity
7471286 Würth Elektronik Midcom	CIRCUIT-BOARD BLADE TERMINAL 5.2	365
638263222007 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	100
7471212 Würth Elektronik Midcom	CIRCUIT-BOARD BLADE TERMINAL 4.8	0
638363222008 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	50
638207122002 Würth Elektronik Midcom	WR-FAST_THT MALE RIGHT ANGLED HE	500
638363222003 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	22
638307222006 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	100
638207222003 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	194
638363122007 Würth Elektronik Midcom	WR-FAST_THT MALE RIGHT ANGLED HE	100
638363222005 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	85
638307122002 Würth Elektronik Midcom	WR-FAST_THT MALE RIGHT ANGLED HE	200
638363122005 Würth Elektronik Midcom	WR-FAST_THT MALE RIGHT ANGLED HE	100
638207122006 Würth Elektronik Midcom	WR-FAST_THT MALE RIGHT ANGLED HE	95
638207122005 Würth Elektronik Midcom	WR-FAST_THT MALE RIGHT ANGLED HE	100
7474966 Würth Elektronik Midcom	CIRCUIT-BOARD BLADE TERMINAL	859
638207222005 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	100
638263222004 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	242
638307222003 Würth Elektronik Midcom	WR-FAST_THT MALE VERTICAL HEADER	200
638207122004 Würth Elektronik Midcom	WR-FAST_THT MALE RIGHT ANGLED HE	200
7471287 Würth Elektronik Midcom	CIRCUIT-BOARD BLADE TERMINAL 6.3	1668

Terminals - Quick Connects, Quick Disconnect Connectors

1. Overview

Quick connects/disconnects (QCDs) are electrical connectors designed for rapid, tool-free connection and disconnection of circuits. These components enable efficient maintenance, modular system design, and reliable signal/power transmission in complex systems. Their importance spans across industries requiring frequent interface changes while maintaining electrical integrity.

2. Major Types & Functional Classification

Type	Functional Features	Application Examples
Single-contact QCDs	Simple push-pull mechanism, 1-10A rating	Consumer electronics peripherals
Multicontact Array	Parallel signal/power paths, IP67 rated	Industrial automation equipment
Hydraulic Couplings	Fluid-tight sealing, 3000psi pressure	Construction machinery hydraulics
Blade Terminals	Tab-width standardized (4.8-9.5mm), vibration-resistant	Automotive electrical systems
Push-to-Connect	Self-locking collet mechanism, 0.5s engagement	Medical device rapid deployment

3. Structural Composition

Typical QCD construction includes:

Dielectric housing (PA66, LCP, or PBT materials)
Contact elements (phosphor bronze, beryllium copper)
Retention mechanism (spring-loaded collets, detent balls)
Environmental seals (EPDM or silicone O-rings)
Strain relief components (integral cable clamps)

4. Key Technical Parameters

Parameter	Typical Range	Significance
Contact Resistance	1-10 m	Directly affects power loss
Insulation Resistance	100M -10G	Ensures circuit isolation
Operating Temperature	-55 C to +150 C	Determines environmental suitability
Insertion Force	5-50N	Impacts user experience
Durability	500-10,000 cycles	Service life indicator

5. Application Fields

Primary industries include:

Automotive (EV charging interfaces, sensor harnesses)
Aerospace (avionics rack connections)
Industrial Automation (robotic arm tooling)
Medical (patient monitoring equipment)
Telecommunications (base station RF connections)

6. Leading Manufacturers

Manufacturer	Representative Product	Key Specification
TE Connectivity	MICRO SWITCH QT	IP69K rated, 1000VAC
Molex	PicoBlade 0.8mm	0.3A contact rating
Amphenol	QCD Series 262	Hydraulic 3000psi capability
Weidm ller	OMQ Quick Connect	Vibration-proof design
Delphi	Metri-Pack 150	Automotive standard

7. Selection Guidelines

Key considerations:

Current/voltage requirements (derating factors)
Environmental protection needs (IP rating)
Engagement/disengagement frequency
Space constraints (3D footprint)
Material compatibility (corrosion resistance)
Certification requirements (UL, CE, MIL-STD)

8. Industry Trends

Current development trends include:

Nanocoating integration for corrosion resistance
Smart connectors with embedded sensors
Miniaturization (sub-mm contact spacing)
High-temperature superconducting materials
Automated mating systems for Industry 4.0