Circular Connectors

Circular Connectors - Adapters

Part Number	Description / PDF	Quantity
PTB-14-18PS(025) Amphenol Industrial	CONN ADAPTER 18P-18P F-M PNL MNT	0
TBF-18-9PS Amphenol Industrial	CONN ADAPTER 7P-7P F-M PNL MNT	0
TBF-36-5PSX Amphenol Industrial	CONN ADAPTER 4P-4P F-M PNL MNT	0
PTBJ-12-8PS Amphenol Industrial	CONN ADAPTER 8P-8P F-M PNL MNT	0
10-107414-2 Amphenol Industrial	CONN ADAPTER 4P-4P F-M PNL MNT	0
PTB8-4PSW Amphenol Industrial	CONN ADAPTER 4P-4P F-M PNL MNT	32
PTB-18-32PSY Amphenol Industrial	CONN ADAPTER 32P-32P F-M PNL MNT	0
PTB-16-23PS Amphenol Industrial	CONN ADAPTER 23P-23P F-M PNL MNT	0
SPB-22-55PS Amphenol Industrial	CONN ADAPTER 55P-55P F-M PNL MNT	0
PTB8-3PSW Amphenol Industrial	CONN ADAPTER 3P-3P F-M PNL MNT	32
TBF-32-6PS Amphenol Industrial	CONN ADAPTER 23P-23P F-M PNL MNT	0
88-194440-82 Amphenol Industrial	CONN ADAPTER 62P-62P F-M PNL MNT	0
SPB-22-55PS(003) Amphenol Industrial	CONN ADAPTER 55P-55P F-M PNL MNT	0
PTB-22-32PS(023) Amphenol Industrial	CONN ADAPTER 32P-32P F-M PNL MNT	0
TBF-22-23PS Amphenol Industrial	CONN ADAPTER 8P-8P F-M PNL MNT	0
10-107428-21 Amphenol Industrial	CONN ADAPTER 37P-37P F-M PNL MNT	0
TBF-20-7PS Amphenol Industrial	CONN ADAPTER 8P-8P F-M PNL MNT	0
TBF-12S-3PS Amphenol Industrial	CONN ADAPTER 2P-2P F-M PNL MNT	0
PTB-22-41PS Amphenol Industrial	CONN ADAPTER 41P-41P F-M PNL MNT	0
TBF-28-12PS Amphenol Industrial	CONN ADAPTER 26P-26P F-M PNL MNT	0

Circular Connectors - Adapters

1. Overview

Circular connectors-adapters are electromechanical devices enabling seamless signal/power transmission between components with different interface standards. Defined by IEC 60512 standards, these adapters feature cylindrical housings with multiple contact points, offering critical bridging solutions in complex systems. Their importance spans across aerospace, industrial automation, and medical equipment, where they ensure interoperability while maintaining signal integrity under harsh conditions.

2. Major Types & Functional Classification

Type	Functional Features	Application Examples
MIL-DTL-5015 Adapters	Threaded coupling, 4-95 contacts, vibration resistance	Military communication systems
MIL-DTL-38999 Adapters	High-density, environmental sealing (IP67)	Aerospace sensor interfaces
USB-C Circular Adapters	Hybrid signal/power transmission, reversible design	Industrial IoT devices
BNC-TNC Adapters	Bayonet/ threaded coupling, 0-11GHz frequency range	RF test equipment

3. Structural Composition

Typical construction includes: - Metal housing: Aluminum alloy or stainless steel with plating (nickel/gold) - Contact elements: Phosphor bronze with precision-machined contact areas - Insulation: High-temperature resistant thermoplastics (operating range: -55 C to +200 C) - Sealing system: Multi-lip elastomer gaskets for IP68 protection - Mating interface: Polarized keying system preventing misalignment

4. Key Technical Parameters

Parameter	Importance
Current Rating (1-50A)	Determines power transmission capacity
Contact Resistance ( 5m )	Impacts signal fidelity
Dielectric Withstanding Voltage (500V-5kV)	Ensures electrical safety
Insertion Loss ( 0.5dB)	Microwave signal integrity
Shock Resistance (50G-150G)	Survivability in extreme environments
Durability (500-10,000 mating cycles)	Lifecycle cost efficiency

5. Application Fields

Key industries include: - Aerospace: Flight control systems (e.g., Boeing 787 sensor networks) - Industrial Automation: Siemens SIMATIC controllers interconnection - Medical Equipment: MRI machine RF connectors (Philips Ingenia series) - Telecommunications: 5G base station antenna interfaces - Transportation: High-speed train diagnostic systems (Siemens Velaro)

6. Leading Manufacturers

Manufacturer	Representative Product
Amphenol Aerospace	Serie 801 MIL-DTL-38999 Adapter
TE Connectivity	DEUTSCH DT06-6P Adapter
ITT Cannon	C Series C63EA-20-19P
Molex	MX150L Adapter System

7. Selection Guidelines

Key considerations: - Electrical Requirements: Match current/voltage ratings with system needs - Environmental Conditions: Consider temperature range, corrosion resistance - Mechanical Compatibility: Verify thread types (UNF/Metric) and keying - Standard Compliance: MIL-STD-810, ISO 6722 certification - Maintenance Factors: Evaluate ease of field repairability

8. Industry Trend Analysis

Current developments show: - Miniaturization: 30% size reduction in USB-C hybrid adapters - High-speed Data: 40Gbps+ transmission rates in new RF adapters - Smart Integration: Embedded sensors for condition monitoring - Material Innovation: Graphene-coated contacts reducing resistance by 40% - Standardization: Growing adoption of IEC 61076-1 universal interface standard