MDSM is the commercial industry's smallest D-type connector for shielded I/O wire-to-board applications. Requiring less than 1/3 the area of a traditional D Subminiature connector, MDSM is designed for situations where space and EMI shielding are the primary design drivers. Unlike other micro connectors, MDSM's rugged construction and unique contact design combined with a PdNi contact finish provide durability of 10,000 mating cycles. All of this comes in a sleek package that includes a snap together shield can and a slide over boot producing a cable assembly with an overmolded look and a low assembled cost. MDSM is an ideal solution for applications where size, shielding, durability and aesthetics are key design criteria.
The MDSM (Micro D) connector is the smallest D‑type connector for shielded I/O wire‑to‑board applications, using less than one‑third the area of a traditional D‑subminiature. Its rugged construction, PdNi‑plated contacts and optional latching mechanisms provide durability up to 10,000 mating cycles while maintaining full EMI shielding.
The product line includes single‑row and stacked 90° PCB versions, unassembled cable‑connector kits, and a range of crimping and tooling accessories. It is SSA (Serial Storage Architecture) compatible, supporting high‑speed data transfer for storage devices, servers and workstations.
| Temperature Rating | 55°C to 125°C |
|---|---|
| Current Rating | 1 A (temp dependent) |
| Contact Resistance | 20 mΩ max |
| Insulation Resistance | 5000 MΩ min |
| Dielectric Withstanding Voltage | 350 V at sea level |
| Durability (Mating Cycles) | 10,000 cycles |
| Shock / Vibration | 50 G's / 50 G's |
| Wire Size | 26 to 30 AWG |
| Shell Material | Steel |
| Shield Can Material | Steel |
| Cover Material | Steel |
| Insulator Material | Thermoplastic, UL94 V‑0 |
| Contact Material | Copper alloy with gold flash over 30 µin PdNi, tin on balance |
The connector is rated for operation from 55 °C up to 125 °C.
It is designed for up to 10,000 mating cycles.
Two options are offered: a thumbscrew (jackscrew) for infrequent unmating, and a push/pull mechanism for quick connect/disconnect.
Yes, the MDSM connector is SSA‑compatible and is used in external cable assemblies for high‑speed storage interfaces.