Terminals - Quick Connects, Quick Disconnect Connectors

Part Number	Description / PDF	Quantity
0190040012 Woodhead - Molex	CONN QC TAB 10-12AWG 0.250 CRIMP	455
0190120031 Woodhead - Molex	CONN QC RCPT/TAB 14-16AWG 0.250	3211
0940303910 Woodhead - Molex	CONN QC RCPT 14-16AWG 0.250	5218
0190160009 Woodhead - Molex	CONN QC RCPT 18-22AWG 0.250	23631
0190060020 Woodhead - Molex	CONN QC RCPT 10-12AWG 0.250	443
0190090010 Woodhead - Molex	CONN QC RCPT 14-16AWG 0.250	2848
0350689802 Woodhead - Molex	CONN QC RCPT 16-20AWG 0.187	0
0190030055 Woodhead - Molex	CONN QC RCPT 14-16AWG 0.187	2965
0190170009 Woodhead - Molex	CONN QC RCPT 18-22AWG 0.187	73373
0350689822 Woodhead - Molex	CONN QC RCPT 16-20AWG 0.187	0
0190080063 Woodhead - Molex	CONN QC RCPT 10-12AWG 0.250	3487
0190040008 Woodhead - Molex	CONN QC TAB 14-16AWG 0.250 CRIMP	167
0190180014 Woodhead - Molex	CONN QC RCPT 14-16AWG 0.250	1119
0190020046 Woodhead - Molex	CONN QC RCPT 10-12AWG 0.250	5863
0190090003 Woodhead - Molex	CONN QC RCPT 18-22AWG 0.187	0
0190190009 Woodhead - Molex	CONN QC RCPT 18-22AWG 0.187	6371
0190030058 Woodhead - Molex	CONN QC RCPT 14-16AWG 0.187	4485
0190170008 Woodhead - Molex	CONN QC RCPT 18-22AWG 0.187	14504
0190020004 Woodhead - Molex	CONN QC RCPT 18-22AWG 0.250	1057
0190060005 Woodhead - Molex	CONN QC RCPT 18-22AWG 0.187	2241

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