Terminals - Quick Connects, Quick Disconnect Connectors

Part Number	Description / PDF	Quantity
76-NFIFD12 NTE Electronics, Inc.	NYLON FULLY INS FEM DISC	477
76-IMD16-187C NTE Electronics, Inc.	PVC INS MALE DISCON 16-14 100 BA	2
76-FD22-187 NTE Electronics, Inc.	NON INS FEM DISCON 22-18G	2642
76-MD22-187C NTE Electronics, Inc.	NON INS MALE DISCONNECT 100 BAG	8
76-IPD22L NTE Electronics, Inc.	PVC INS PIGGYBACK DISCONN 50 BAG	6
76-IPD22C NTE Electronics, Inc.	PVC INS PIGGYBACK DISCONN 100 BA	0
76-NFIMD12C NTE Electronics, Inc.	NYLON FULLY INS MALE DISC 100 BA	5
76-FIFD16-250C NTE Electronics, Inc.	PVC FULLY INS FEM DISCON 100 BAG	5
76-MD22C NTE Electronics, Inc.	NON INS MALE DISCONNECT 100 BAG	4
76-IMD12-250C NTE Electronics, Inc.	PVC INS MALE DISCON 12-10 100 BA	0
76-NIFD22-250L NTE Electronics, Inc.	NYLON INS FEMALE DISCONN 50 BAG	14
76-IFD16-187 NTE Electronics, Inc.	PVC INS FEMALE DISCONNECT	1510
76-NFIMD16C NTE Electronics, Inc.	NYLON FULLY INS MALE DISC 100 BA	3
76-IFD22-110L NTE Electronics, Inc.	PVC INS FEMALE DISCONNECT 50 BAG	10
76-FIFD22-250C NTE Electronics, Inc.	PVC FULLY INS FEM DISCON 100 BAG	5
76-FIFD22-187L NTE Electronics, Inc.	PVC FULLY INS FEM DISCON 50 BAG	16
76-IFD16-250L NTE Electronics, Inc.	PVC INS FEMALE DISCONNECT 50 BAG	4
76-NIFD16-110 NTE Electronics, Inc.	NYLON INS FEMALE DISCONN	1828
76-HIMD12 NTE Electronics, Inc.	HEAT SHRINK INS MALE DISC	900
76-NIFD22-187C NTE Electronics, Inc.	NYLON INS FEMALE DISCONN 100 BAG	4

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