Terminals - Quick Connects, Quick Disconnect Connectors

Part Number	Description / PDF	Quantity
MNU18-250DMIK 3M	CONN QC TAB 18-22AWG 0.250 CRIMP	1409
FDI18-187Q 3M	FM DISCONNECT FULLY NYLON INS	3159
70F-110-32-PB 3M	CONN QC RCPT 22-26AWG 0.110	464
94827 3M	CONN QC TAB 14-16AWG 0.250 CRIMP	1022
HT-73F-250-32 3M	CONN QC RCPT 10-12AWG 0.250	24
MTI14-250Q 3M	MALE DISCON NYLON INS HIGHLAND	560
94804 3M	CONN QC RCPT 18-22AWG 0.250	890
MVI18-250DFX-BOTTLE 3M	CONN QC RCPT 18-22AWG 0.25 100PC	4
94825 3M	CONN QC TAB 14-16AWG 0.187 CRIMP	1176
MNG18-187DFIK 3M	CONN QC RCPT 18-22AWG 0.187	1000
71F-250-32-NBL 3M	CONN QC RCPT 18-22AWG 0.250	4638
07-8-250 3M	CONN RING UNINSUL	2305
94803 3M	CONN QC RCPT 18-22AWG 0.250	25480
94797 3M	CONN QC RCPT 18-22AWG 0.187	36
MNHU14-250DMIX-BOTTLE 3M	CONN QC TAB 14-16AWG 0.250 25PC	1
FDV18-187Q 3M	FEMALE DISCONNECT VINYL INS	582
MU14-250DFK 3M	CONN QC RCPT 14-16AWG 0.250	4650
MNU10-250DMIX-BOTTLE 3M	CONN QC TAB 10-12AWG 0.250 50PC	0
MNG18-250DMIX-BOTTLE 3M	CONN QC TAB 18-22AWG 0.250 50PC	17
MVU18-250DMFK-A 3M	CONN QC RCPT/TAB 18-22AWG 0.250	994

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