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Circular Connectors

RoHS compliant circular
connectors to MIL-DTL-5015.

  • Sealed connectors exceeding IP67
  • 13 Amps
  • Rugged COTS connection
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38 products in Circular Connectors

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RoHS Compliant Circular Connectors

Rugged and waterproof, yet kinder to the environment - these connectors are fully RoHS compliant yet still meet all the electrical and mechanical performance requirements of MIL-DTL-5015.

Harwin Circular Connectors Features:

  • Exceeds IP67 sealing requirements - water immersion of 1.8m for 48 hours
  • 13 Amps per contact
  • Rugged, durable - withstands multiple mating cycles and rated to 10G vibration, 50G shock
  • Stocked in depth across the Harwin Authorized Distributor network
  • All contacts are solder cup for cable connection
  • 3 body styles - Cable connector with rotating threaded ring, mating Panel mounting with external thread,  and mating Cable connector with external thread

As a connector range designed to meet the performance of MIL-DTL-5015, but with the added improvement of RoHS compliance, these connectors are ideally suited for COTS (Commercial Off-The-Shelf) programs.

Harwin's range of MIL-DTL-5015 RoHS compliant connectors are part of the C90 series. The range features the following options:

Shell Types:

Cable Connector Connector designed for cable, with internal seal, backshell with strain relief, and external mating thread
Straight Plug Connector designed for cable, with internal seal, backshell with strain relief, and rotating collar with internal mating thread
Panel Mount Receptacle Connector designed for mounting on a bulkhead or panel, supplied with panel seal, and external mating thread


Shell Sizes:

10SL-4 2 contacts, Ø24.1mm diameter mating collar
10SL-3 3 contacts, Ø24.1mm diameter mating collar
12S-3 2 contacts, Ø25.3mm diameter mating collar
14S-2 4 contacts, Ø28.53mm diameter mating collar
14S-6 6 contacts, Ø28.53mm diameter mating collar


All connectors have the option of male or female contacts in all three shell styles, all five shell sizes.

The following information is highlights from the C90 range performance characteristics. Download the complete Component Specification C045xx in PDF format for more detail.


Outer shell Aluminium Alloy, with Zinc Cobalt Alloy finish in Black
Contacts Copper Alloy, Silver finish
Seals Synthetic Rubber



Current 13A per contact
Working Voltage
  • 500V AC, 700V DC for 10SL and 12S shell sizes
  • 200V AC, 250V DC for 14S shell size
Maximum Voltage
  • 2,000V AC for 10SL and 12S shell sizes
  • 1,000V AC for 14S shell size
Insulation Resistance 5,000MΩ min



Operating Temperature -55°C to +125°C
Vibration 10-500Hz, 98m/s² (10G)
Shock 490m/s² (50G) for 11ms
Water resistance (sealing) 1.8m immersion depth for 48 hours (exceeds IP67)



Durability (contacts) 500 mating cycles


Wire specification

Wire Sizes 16 to 22 AWG
Strip Length 7.50mm
Component Specification (including pin numbering system) C045XX - C90 Series Connectors
Catalog pages Circular Connectors - Product Catalog
Product Training Module Circular Connectors Overview
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