MDMH9SS Micro-D Receptacle Connector – Equivalent & Substitute Parts

Part Overview

The MDMH9SS is a 9-position D-Type Micro-D receptacle connector manufactured by ITT Cannon, LLC, designed for panel mount applications with female sockets and solder cup termination. This connector is classified as an active product with 723 units currently in stock. The MDMH9SS serves applications requiring compact, shielded signal connectivity with a 0.050 pitch layout and operates across the industrial temperature range of -55°C to 125°C. Substitute parts are identified to address inventory availability, packaging preferences, or specific material and compliance requirements while maintaining functional and mechanical compatibility.

Substiute Parts

MDMH9SS

ITT Cannon, LLCIn Stock: 796MDMH9SS Datasheet

Current PartRFQ

MDM-9SSP

ITT Cannon, LLCIn Stock: 995MDM-9SSP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MDMH9SS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: D-Type, Micro-D
• Connector Type: Receptacle, Female Sockets
• Number of Positions: 9
• Number of Rows: 2
• Mounting Type: Panel Mount
• Shell Size, Connector Layout: 0.050 Pitch x 0.043 Row to Row
• Contact Type: Signal
• Flange Feature: Mating Side, Female Screwlock (2-56)
• Termination: Solder Cup
• Current Rating: 3A
• Features: Shielded
• Operating Temperature: -55°C ~ 125°C
• Contact Material: Copper Alloy
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part MDM-9SSP meets all mandatory matching parameters. Variations in shell material finish (Steel, Tin-Lead Plated versus Aluminum, Yellow Chromate Plated Cadmium) and dielectric material (Diallyl Phthalate versus Liquid Crystal Polymer) do not affect functional or mechanical compatibility within the specified electrical and thermal operating envelope.

Parameter Comparison

Engineering Selection Recommendations

Both MDMH9SS and MDM-9SSP are active products from ITT Cannon, LLC with identical functional and mechanical specifications. Selection between these parts is based on the following criteria:

MDMH9SS Selection Criteria:

• Steel shell with Tin-Lead plating provides corrosion resistance in standard industrial environments
• Diallyl Phthalate dielectric material offers established reliability in legacy and current applications
• Packaging format aligns with standard component handling procedures
• Current inventory of 723 units supports immediate availability

MDM-9SSP Selection Criteria:

• Aluminum shell with Yellow Chromate Plated Cadmium finish provides enhanced weight reduction for aerospace and portable applications
• Liquid Crystal Polymer dielectric material offers superior dimensional stability and lower moisture absorption
• Bulk packaging format accommodates high-volume production requirements
• Current inventory of 892 units provides extended supply assurance
• RoHS non-compliant status requires verification against end-use regulatory requirements
• REACH Affected status requires compliance documentation for restricted substance management

Both parts operate identically within the specified electrical and thermal parameters. Material and finish differences do not affect signal integrity, contact resistance, or mechanical mating characteristics within the defined operating envelope.

Frequently Asked Questions (FAQ)

Q1: Are MDMH9SS and MDM-9SSP mechanically interchangeable?

A: Yes. Both connectors share identical mechanical specifications: 9-position D-Type Micro-D receptacle configuration, 0.050 pitch x 0.043 row-to-row layout, panel mount orientation, and female screwlock (2-56) mating interface. Physical dimensions and mounting footprints are equivalent.

Q2: Are there electrical performance differences between these parts?

A: No. Both connectors operate at 3A current rating, support identical signal contact type, and function across the same operating temperature range (-55°C to 125°C). Contact material (Copper Alloy) and finish (Gold) are identical, ensuring equivalent electrical performance and contact resistance.

Q3: What is the significance of the shell material difference?

A: The MDMH9SS uses Steel with Tin-Lead plating; the MDM-9SSP uses Aluminum with Yellow Chromate Plated Cadmium. Both finishes provide shielding and corrosion protection. Steel offers greater mechanical robustness; Aluminum offers weight reduction. Selection depends on application-specific environmental and weight requirements.

Q4: How do the dielectric materials differ?

A: MDMH9SS uses Diallyl Phthalate (DAP), Glass Filled; MDM-9SSP uses Liquid Crystal Polymer (LCP). Both materials are rated MSL 1 (Unlimited moisture sensitivity). LCP provides superior dimensional stability and lower moisture absorption; DAP offers established long-term reliability. Both support the specified operating temperature range without performance degradation.

Q5: What does RoHS non-compliant status mean for MDM-9SSP?

A: The MDM-9SSP is designated RoHS non-compliant, indicating it may contain restricted substances (lead, cadmium, or other regulated materials) in concentrations exceeding RoHS limits. This status requires verification against end-use regulatory requirements. Applications subject to RoHS directives must confirm compliance before selection.

Q6: What is the REACH Affected status for MDM-9SSP?

A: REACH Affected status indicates the part contains substances of concern under REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. Compliance documentation and substance declarations must be obtained from the manufacturer for applications requiring REACH compliance verification.

Q7: Can I substitute MDMH9SS with MDM-9SSP in existing designs?

A: Yes, provided the design does not impose specific material, finish, or regulatory compliance constraints. Verify that the application environment is compatible with Aluminum/Yellow Chromate finish and that RoHS/REACH compliance status aligns with end-use requirements.

Q8: What packaging differences exist between these parts?

A: MDMH9SS is supplied in standard packaging; MDM-9SSP is supplied in Bulk packaging. Bulk packaging accommodates high-volume production workflows. Standard packaging is suitable for lower-volume or prototype applications.

Q9: Which part should I select for new designs?

A: Selection depends on application-specific requirements. For standard industrial applications without RoHS/REACH constraints, either part is suitable. For aerospace or weight-critical applications, MDM-9SSP offers material advantages. For RoHS-compliant applications, MDMH9SS is the appropriate selection.

Q10: Are there any performance limitations when substituting between these parts?

A: No performance limitations exist within the specified electrical and thermal operating envelope. Both parts maintain identical signal integrity, contact reliability, and mechanical stability across the -55°C to 125°C operating range.