Terminals - Quick Connects, Quick Disconnect Connectors

Part Number	Description / PDF	Quantity
MU18-250DFK 3M	CONN QC RCPT 18-22AWG 0.250	10004
MTI14-187Q 3M	MALE DISCON NYLON HIGHLAND 1=1PC	634
94833 3M	CONN QC RCPT 10-12AWG 0.250	1570
MNU14-250DMIX-BOTTLE 3M	CONN QC TAB 14-16AWG 0.250 CRIMP	142
MNHU14-250DFIX-BOTTLE 3M	CONN QC RCPT 14-16AWG 0.250 25PC	40
71F-187-20 3M	CONN QC RCPT 18-22AWG 0.187	1360
71F-250-32 3M	CONN QC RCPT 18-22AWG 0.250	2094
771-250-P 3M	CONN QC RCPT/TAB 18-22AWG 0.250	464
MU18-187DMX-BOTTLE 3M	CONN QC TAB 18-22AWG 0.187 100PC	0
MNU18-187DMIX-BOTTLE 3M	CONN QC TAB 18-22AWG 0.187 100PC	0
94798 3M	71F-187-20-NBLNYLONDISCONN 1=1PC	438
MNU18-187DMIK 3M	CONN QC TAB 18-22AWG 0.187 CRIMP	3196
94821 3M	CONN QC RCPT 14-16AWG 0.250	1484
MVU18-187DFK 3M	CONN QC RCPT 18-22AWG 0.187	1356
MNG18-250DFIX-BOTTLE 3M	CONN QC RCPT 18-22AWG 0.25 100PC	10
MTV18-250Q 3M	MALE DISCON VINYL INS HIGHLAND	0
94802 3M	71F-250-32-NBL NYLON DISC 1=1PC	1017
MU18-187DFK 3M	CONN QC RCPT 18-22AWG 0.187	4305
73M-250-32 3M	CONN QC TAB 10-12AWG 0.250 CRIMP	1530
FDV18-250Q 3M	FEMALE DISCONNECT VINYL 1=1PC	150

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