MDM-9SSB ITT Cannon 9-Position Micro-D Receptacle
Part Number: MDM-9SSB
Manufacturer: ITT Cannon
Product Series: MDM Micro-D
Product Type: Micro-D receptacle
Contact Gender: Female socket
Number of Positions: 9
Number of Rows: 2
Termination: Solder cup
Mounting Type: Panel mount
Mounting Hardware: None; unthreaded mounting holes
Contact Pitch: 0.050 in / 1.27 mm
MDM-9SSB ITT Cannon 9-Position Micro-D Receptacle
MDM-9SSB is a 9-position female Micro-D receptacle from the ITT Cannon MDM metal-shell connector series. It uses gold-plated socket contacts with solder-cup terminations and unthreaded mounting holes.
The connector places nine signal contacts on a 0.050-inch (1.27 mm) pitch, providing a compact alternative to conventional D-sub connectors where panel space and equipment weight are limited.
Its aluminum shell provides mechanical protection and EMI/RFI shielding, while the polarized Micro-D interface prevents incorrect mating. MDM connectors are widely used in aerospace, defense, satellites, instrumentation, medical equipment and high-reliability industrial systems.
Core Advantages
Compact nine-contact Micro-D interface with a 1.27 mm contact pitch
Solder-cup contacts support custom cable assembly without factory-installed wire leads
Aluminum shell and polarized interface provide mechanical protection and EMI/RFI shielding
Technical Specifications
| Specification | MDM-9SSB |
|---|---|
| Manufacturer | ITT Cannon |
| Series | MDM |
| Connector style | D-shaped Micro-D |
| Connector type | Receptacle |
| Contact gender | Female socket |
| Number of contacts | 9 |
| Number of rows | 2 |
| Contact spacing | 0.050 in / 1.27 mm |
| Row spacing | Approximately 0.043 in / 1.09 mm |
| Termination method | Solder cup |
| Maximum wire size | Approximately 26 AWG |
| Current rating | 3 A maximum per contact |
| Dielectric withstand voltage | 600 VAC at sea level |
| High-altitude withstand voltage | 150 VAC at 70,000 ft |
| Insulation resistance | 5,000 MΩ minimum |
| Contact resistance | 8 mΩ maximum at 3 A |
| Contact retention | 5 lb minimum axial load |
| Contact material | Copper alloy |
| Contact plating | Gold |
| Shell material | 6061-T6 aluminum alloy |
| Standard shell finish | Cadmium/yellow chromate over electroless nickel |
| Insulator material | Liquid crystal polymer |
| Coupling | Friction or optional locking hardware |
| Polarization | Keystone-shaped shell |
| Mounting holes | Unthreaded |
| Standard mounting-hole diameter | Approximately 0.091 in / 2.31 mm |
| Operating temperature | −55°C to +125°C |
| Mechanical shock | 50 g |
| Vibration | 20 g |
| Durability | 500 mating cycles |
| Salt-spray resistance | 48 hours |
| RoHS status | Standard version is generally non-RoHS |
Performance values apply to the standard MDM construction. The selected shell finish, hardware and mating connector should be verified against the current ITT Cannon drawing.
Mating Connector Selection
MDM-9SSB is a female receptacle and requires a 9-position MDM plug with male pin contacts.
Common mating options include:
| Mating model | Description |
|---|---|
| MDM-9PSB | 9-position male plug, solder-cup termination, no hardware |
| MDM-9PSP | 9-position male plug with solder-cup contacts and jackpost hardware |
| MDM-9PSK | 9-position male plug with solder-cup contacts and standard jackscrews |
| MDM-9PSL | 9-position male plug with solder-cup contacts and low-profile jackscrews |
| MDM-9PSF | 9-position male plug with solder-cup contacts and float-mount hardware |
| MDM-9PSM7 | 9-position male plug with MIL-spec jackpost hardware |
Typical Applications
MDM-9SSB is suitable for compact signal connections in:
Commercial and military avionics
Satellites and spacecraft
Radar equipment
Navigation systems
Guidance and control equipment
Test and measurement instruments
Medical devices
Robotics
Geophysical instruments
Industrial control systems
Data-acquisition equipment
Communication modules
Compact sensors
Laboratory equipment
Similar ITT Cannon Models
| Model | Main difference |
|---|---|
| MDM-9PSB | Male pin plug with solder-cup termination |
| MDM-9SSB-A174 | Female receptacle with electroless-nickel shell finish |
| MDM-9SSB-A172 | Female receptacle with gold-over-nickel shell finish |
| MDM-9SSB-A141 | Female receptacle with Iridite/Alodine finish |
| MDM-9SH003B | Female connector with 18-inch color-coded wire leads |
| MDM-9SH001B | Female connector with 18-inch yellow wire leads |
| MDM-9SL1B | Female connector with 0.5-inch solid wire terminations |
| MDM-15SSB | 15-position female solder-cup receptacle |
| MDM-25SSB | 25-position female solder-cup receptacle |
The finish-modified versions may have different RoHS, grounding, corrosion and program-approval characteristics. Compare the full part-number drawing before substitution.
MDM-9SSB vs MDM-9SSB-A174
| Item | MDM-9SSB | MDM-9SSB-A174 |
|---|---|---|
| Contact arrangement | 9 sockets | 9 sockets |
| Termination | Solder cup | Solder cup |
| Mounting hardware | None | None |
| Shell finish | Cadmium/yellow chromate | Electroless nickel |
| RoHS suitability | Generally non-RoHS | Used for RoHS-related configurations when properly specified |
| Typical selection reason | Legacy aerospace and military equipment | Conductive nickel finish and restricted-substance requirements |
When RoHS compliance is mandatory, confirm whether the complete part number must use the RMDM series designation in addition to the A174 finish.
Stock, Lead Time and Quotation
MDM-9SSB is an active ITT Cannon Micro-D model, but stock and lead time vary between factory production and distributor inventory. Factory lead times may be several months, while limited quantities may be available from existing distributor stock.
DataStorageIC can assist with current stock checks, pricing, mating-plug selection, backshell selection and comparison of standard cadmium, electroless-nickel and other finish options.
Send us the required quantity, target delivery date, mounting requirement and mating-connector information to request a quotation for MDM-9SSB.
