B2B Electronic Connection Solution

RS-232 Event Recorder Cable Assembly 3-Pin Circular to 4-Pin 20AWG 12-Inch | EDOM

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RS-232 Event Recorder Cable Assembly 3-Pin Circular to 4-Pin 20AWG 12-Inch | EDOM

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Tailored cable assembly & wire harness designs to meet your exact application requirements.

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Electrical ratings, mechanical drawings, material specs and compliance certifications on request.

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Competitive OEM & distributor pricing with flexible MOQ for both prototype and volume orders.

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Products engineered and tested to meet North American and European regulatory standards.

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Detailed Product Information

Technical Data & Reference

Structured parameters, material notes, application context and frequently asked questions for engineering and procurement evaluation.

Competitor & Cross-Reference

Alternative Type
Drop-in Replacement
Competitor Part Number
B-735-0208-000
Mates With
ITT Cannon KPT06/KPT07 Shell #12 3-Pin Female Sockets & Samtec IPD1 Series 2.54mm Pitch Headers

Drop-in Replacement: This part is a direct, pin-compatible substitute for the competitor part number listed above. No design modification required.

Technical Specifications

Harness / Cable Type
RS-232 Serial Event Recorder Cable Assembly
End A Connector
ITT Cannon KPT02E12-3P (3-Pin Male Circular, Shell #12, #16 Solder Contacts)
End B Connector
Samtec IPD1-02-D-K (4-Pin Female Mini-Mate Housing)
Wire Gauge
20 AWG Discrete Wire (Black, Red, White)
Total Assembly Length
12.0 Inches (304.8 mm)
Pinout Configuration
A -> BLK -> Pin 2; B -> RED -> Pin 1; C -> WHT -> Pin 4 (Pin 3 Unused/Installed)
Label Specification
Self-Laminating Vinyl Label (Brady B-33-273-427 or equivalent)
Workmanship Standard
IPC/WHMA-A-620 Class 2
Regulatory Compliance
RoHS 2.0, REACH SVHC, ISO 9001:2015

Material Composition

Material Value / Description
Circular Connector Shell Aluminum Alloy with Olive Drab Chromate / Cadmium or Conductive Plating
Mini-Mate Housing Material High-Temperature Nylon / PBT Thermoplastic (UL 94V-0 Rated)
Terminal Contacts Material Phosphor Bronze / Copper Alloy with Gold Plating over Nickel Underplate
Conductor Material High-Conductivity Stranded Copper Conductors (20 AWG)
Strain Relief Insulation Polyolefin Heat Shrink Tubing (1/8", 1/4", and 1/2" Diameters)

Technical Characteristics

Characteristic Value
Pinout & Continuity Testing 100% Tested for Open Circuits, Continuity, and Shorts
Length Tolerance (<12-60") +2.0" / -0.0"
Heat Shrink Length Tolerance +5% / -0%
Manufacturing Quality Level IPC/WHMA-A-620 Class 2 Inspection

Application Scenarios

  • Industrial RS-232 Event Recorders & Data Loggers

  • Rail Transit & Heavy Equipment Diagnostic Ports

  • Factory Automation Cabinets & Embedded PLC Interfaces

  • Supervisory Control and Data Acquisition (SCADA) Field Modules

  • Rugged Telemetry & Sensor Signal Monitoring Systems

Evidence & Reference Images

Frequently Asked Questions

How is the pinout mapped between the circular connector and the 4-pin interface?
The assembly routes circular Pin A to Samtec Pin 2 (Black wire), Pin B to Samtec Pin 1 (Red wire), and Pin C to Samtec Pin 4 (White wire). Samtec Pin 3 is fitted with an unused crimped contact to ensure connector balance and socket cavity integrity.
What electrical and continuity inspection standards are applied?
Every unit undergoes 100% electrical testing for line continuity, pinout verification, and short circuits, fully meeting IPC/WHMA-A-620 Class 2 assembly criteria.
How does the cable construction resist mechanical vibration and strain?
The harness incorporates individual 1/8-inch polyolefin heat shrink sleeves over each solder cup, bundled beneath an outer 1/4-inch sleeve and an additional 1/2-inch sleeve under the label to prevent conductor fatigue and strain breakage.

Overview and Application Notes

This industrial-grade RS-232 event recorder cable assembly features a rugged 3-pin male circular connector mated with a 4-pin female mini-mate interface, wired via 20 AWG discrete conductors. Measuring 12.0 inches in overall length with dual-layer heat shrink strain relief, it provides dependable serial data acquisition and harsh-environment telemetry in embedded computing, transit data logging, and industrial machinery.

Key Features

  • Dual-Interface Configuration: Rugged bayonet-lock 3-pin male circular connector to compact 4-pin female wire-to-board connector.
  • Conductor & Termination: Discrete 20 AWG tinned copper wiring with 3 active lines (Black, Red, White) and a protected crimp contact in pin 3.
  • Environmental & Strain Protection: Comprehensive multi-stage polyolefin heat shrink sleeving over solder cups and cable transitions.
  • Clear Identification: Self-laminating vinyl wire label for traceable circuit verification and field maintenance.
  • Quality Standard: Built and 100% verified to IPC/WHMA-A-620 Class 2 requirements for industrial harness integrity.

Engineering Specifications & System Integration

The assembly is engineered for serial RS-232 event logging and field service diagnostic ports. The bayonet circular end supports solder cup termination with individual 1/8″ heat shrink seals over each terminal, bundled under outer 1/4″ and 1/2″ polyolefin sleeves. The female mini-mate housing provides positive latch retention against operational shock and vibration. Standard manufacturing tolerance follows ±2.0 inches for sub-60-inch harness runs, ensuring plug-and-play fit inside tight control cabinets.

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ED-CARS232-M3PF4S-20AWG-012-4

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  • 2 Drawing, datasheet, sample photo, or current supplier part number.
  • 3 Electrical, mechanical, compliance, testing, and packaging requirements.