Rectangular Connectors

Rectangular Connectors - Accessories

Part Number	Description / PDF	Quantity
3341-6-500PK 3M	HEXHEAD BOLT NUT WASHER 2-56X1/2	72
3448-4624 3M	STRAIN RELIEF 24 POS	45
D3448-89144 3M	STRAIN RELIEF 44POS D89-SERIES	0
3490-89124 3M	PULL TAB 24-36POSITION 891SERIES	2000
3448-4626 3M	STRAIN RELIEF 26 POS	950
D3448-89130 3M	STRAIN RELIEF 30POS D89-SERIES	0
3490-89110 3M	PULL TAB 10-20POSITION 891SERIES	0
3858-100 3M	CONN STRAIN RELIEF 100POS 820SER	0
37804-1000-00 3M	DUST COVER 4 POS MINI CLAMP	0
3448-45112 3M	STRAIN RELIEF FOR 45112 SOCKET	0
N3505-30 3M	EJECT LATCH/SHORT/SNAP	0
3505-8116 3M	CONN RETAINER CLIP 16POS LONG	1303
N3505-2 3M	EJEC.LATCH HIGH TEMP PCT	0
3448-152240 3M	STRAIN RELIEF 40POS 2MM	96
D3448-89120 3M	STRAIN RELIEF 20POS D89-SERIES	973
3448-3020 3M	STRAIN RELIEF 20 CONT SOCK CONN	1495
3505-2 BLACK 3M	EJECTOR LATCHES SHORT W/PINS	496
3505-30-BULK BLK-PK 3M	CONN SHORT EJECT LATCH GRAY	0
3448-4210 3M	CONN STRAIN RELIEF FOR 4210 PLUG	0
3448-2026 3M	CONN STRAIN RELIEF 26POS METAL	0

Rectangular Connectors - Accessories

1. Overview

Rectangular connectors - accessories refer to supplementary components designed to enhance the performance, durability, and functionality of rectangular electrical connectors. These accessories include covers, locking mechanisms, cable clamps, adapters, and sealing elements. They play a critical role in protecting connectors from environmental factors, ensuring mechanical stability, and enabling compatibility across systems. With the increasing complexity of electronic systems in industries like telecommunications, automotive, and industrial automation, these accessories have become essential for maintaining reliable signal and power transmission.

2. Main Types and Functional Classification

Type	Function	Application Example
Dust Covers	Protect connectors from dust, moisture, and debris	Outdoor communication equipment
Locking Rings	Prevent accidental disconnection under vibration	Aerospace sensor systems
Cable Clamps	Secure cables to prevent strain on contacts	Industrial machinery
Adapter Panels	Enable interface between different connector standards	Data center server racks
Sealing Grommets	Provide IP67-rated watertight seals	Marine electronics
Mounting Brackets	Facilitate secure panel or PCB installation	Medical diagnostic devices

3. Structure and Composition

Typical accessories consist of:

Material: High-temperature resistant plastics (e.g., PBT, nylon) or metal alloys (e.g., aluminum, stainless steel)
Design: Molded housings with snap-fit or threaded interfaces
Coatings: Corrosion-resistant platings (e.g., nickel, zinc)
Sealing Elements: Elastomer O-rings or gaskets for environmental protection

4. Key Technical Specifications

Parameter	Description	Importance
Material Type	Plastic/metal composition	Determines durability and temperature resistance
Operating Temp	-55 C to +125 C range	Ensures performance in extreme conditions
IP Rating	IP65 to IP68	Defines protection level against solids/liquids
Contact Resistance	10m	Maintains signal integrity
Vibration Resistance	MIL-STD-202F compliant	Prevents failure in dynamic environments
Installation Method	Push-pull, screw, or clip-on	Affects ease of maintenance

5. Application Fields

Key industries utilizing these accessories include:

Telecommunications: 5G base stations, fiber optic enclosures
Automotive: EV charging systems, ADAS sensors
Industrial Automation: PLC control cabinets, robotic arms
Medical: MRI machines, patient monitoring systems
Aerospace: Avionics, satellite communication modules

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Feature
TE Connectivity	Dura-Con Dust Covers	UL94 V-0 flammability rating
Amphenol	Sealed Panel Mount Kits	IP68 protection up to 3m depth
Molex	Mini50 Locking Adapters	High-density signal conversion
Delphi	Automotive Grade Cable Clamps	Vibration tested to 2000 hours
ITT Cannon	Ruggedized MIL-DTL-38999 Adapters	Operating temp -65 C to +200 C

7. Selection Guidelines

Key considerations for selection:

Environmental Conditions: Outdoor applications require UV-resistant materials
Connector Compatibility: Match dimensions with IEC 61076 standards
Sealing Requirements: Select IP67/IP68 for submersion applications
Material Selection: Aluminum for EMI shielding, plastic for weight-sensitive uses
Regulatory Compliance: RoHS/REACH for EU markets, UL certification for North America

8. Industry Trends

Emerging developments include:

Miniaturization: Sub-1mm pitch accessories for IoT devices
Modular Designs: Interchangeable components for rapid system reconfiguration
Smart Integration: Embedded sensors in locking mechanisms for predictive maintenance
Eco-friendly Materials: Bio-based polymers replacing traditional plastics
High-Speed Compatibility: Accessories supporting 25+ Gbps data rates