Overview
The Amphenol 57-30240 is a 24-pin miniature ribbon connector in the 57 series family, engineered for secure electrical interconnection between cables and panels. This male plug features a robust design with zinc-plated steel housing and gold-plated copper alloy contacts, making it suitable for modems, multiplexers, medical equipment, PBX devices, and scientific instrumentation.
Key Features
- Self-cleaning, self-wiping contacts ensure reliable connection and low contact resistance across all 24 positions
- Gold-plated copper alloy contacts resist corrosion and oxidation in demanding environments
- Zinc-plated steel housing with clear chromate finish provides superior EMI/RFI shielding and corrosion resistance
- Solder cup termination allows direct wire attachment without additional crimping hardware
- Compact micro D form factor reduces footprint while maintaining mechanical stability
- 180-degree cable exit with integrated cable clamp for strain relief
Technical Specifications
The Amphenol 57-30240 meets demanding electrical and mechanical requirements:
- Voltage Rating: 1200 VAC (RMS) / 700 VDC
- Current Rating: 5 amperes per contact
- Contact Resistance: 5000 mΩ maximum
- Operating Temperature: −55°C to +155°C
- Wire Gauge Compatibility: 22–30 AWG
- Mating Interface: Spring-latch receptacle (57-40240 series)
Typical Applications
The 57-30240 is widely used in:
- Telecommunications and networking equipment (modems, multiplexers, PBX systems)
- Medical instrumentation and diagnostic devices
- Industrial control systems and signal processing equipment
- Data acquisition and test equipment
- Aerospace and defense communications
Compatibility & Replacements
Compatible With
- Amphenol 57 Series receptacles — specifically the 57-40240 (24-position receptacle with spring latches)
- Standard ribbon cable assemblies — 24-conductor flat and round cables, 22–30 AWG
- Panel-mount systems — fits standard rack-and-panel installations
- Solder-based termination methods — direct connection to PCBs, harnesses, and cable assemblies
Replaces / Drop-In Replacement For
The Amphenol 57-30240 is the standard plug for any 57 series 24-position micro D ribbon connector application. Equivalent or interchangeable with other manufacturers’ miniature ribbon plugs in the micro D form factor when space constraints and contact configuration match. Verify receptacle compatibility (spring latch vs. push-pull) before ordering.
Works With
- Amphenol 57 Series family — complete ecosystem of miniature ribbon connectors, headers, and backshells
- Cable assembly manufacturers — preform terminations with standard solder cup pins
- RoHS-compliant PCB and harness assembly — lead-free solder compatible
- EMI/RFI shielded applications — metal hood design provides excellent shielding characteristics
