M24308/3-1F D-Sub Connector Equivalent & Substitute Parts

Part Overview

The M24308/3-1F is a 9-position D-Sub plug connector with male pins, manufactured by TE Connectivity Aerospace, Defense and Marine. This connector features solder cup termination and is designed for military applications under MIL-DTL-24308 specification. The part is classified as obsolete, necessitating identification of equivalent substitute components that maintain functional compatibility while offering active product status and improved availability.

Substiute Parts

M24308/3-1F

TE Connectivity Aerospace, Defense and MarineIn Stock: 35425M24308/3-1F Datasheet

Current PartRFQ

M24308/3-1F

PositronicIn Stock: 35496M24308/3-1F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M24308/3-1F is determined by strict adherence to the following core parameters:

Critical Matching Parameters:

• Connector style (D-Sub)
• Connector type (Plug, Male Pins)
• Number of positions (9)
• Number of rows (2)
• Shell size and layout (1 / DE, E)
• Termination method (Solder Cup)
• Contact material (Copper Alloy)
• Military specification compliance (MIL-DTL-24308)

Allowable Variations: Substitute parts may differ in mounting type, shell material finish, contact finish thickness, current rating, voltage rating, operating temperature upper limit, dielectric material, wire gauge compatibility, and product status, provided the critical parameters remain identical.

The Positronic M24308/3-1F substitute maintains all critical parameters while offering active product status and enhanced electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The Positronic M24308/3-1F serves as a direct functional substitute for the obsolete TE Connectivity M24308/3-1F. Both connectors comply with MIL-DTL-24308 military specification and maintain identical critical parameters including connector style, type, position count, shell size, and termination method.

The Positronic variant offers the following advantages:

Product Status: Active product status ensures ongoing availability, supply chain continuity, and manufacturer support compared to the obsolete TE Connectivity part.

Electrical Performance: The substitute provides enhanced current rating (7.5A versus 5A) and specified voltage rating (1700V), supporting broader application requirements within the same form factor.

Operating Temperature: Extended upper operating temperature limit (-55°C ~ 150°C versus -55°C ~ 125°C) accommodates higher thermal environments.

Compliance: Both parts maintain identical ECCN (EAR99) and RoHS non-compliant status, ensuring regulatory consistency in applications where these classifications apply.

Mechanical Compatibility: Identical shell size, layout, and flange configuration ensure direct mechanical interchangeability in existing connector receptacles and mating interfaces.

Frequently Asked Questions (FAQ)

Q: Can the Positronic M24308/3-1F directly replace the TE Connectivity M24308/3-1F in existing applications?

A: Yes. Both connectors share identical connector style, type, position count, shell size, layout, and termination method. The Positronic variant maintains full mechanical and electrical compatibility with mating D-Sub receptacles designed for the original part.

Q: What are the key differences between these two connectors?

A: The primary differences are manufacturer identity, product status (active versus obsolete), shell material finish (yellow chromate plated cadmium versus cadmium plated), current rating (7.5A versus 5A), voltage rating (1700V specified versus not specified), operating temperature upper limit (150°C versus 125°C), and dielectric material (PCT versus not specified).

Q: Are there any mounting type differences between the main part and substitute?

A: Yes. The TE Connectivity M24308/3-1F is specified as free hanging (in-line) mounting, while the Positronic M24308/3-1F is panel mount. This difference affects installation method but does not impact electrical or mechanical compatibility with mating receptacles.

Q: Does the substitute part meet the same military specification?

A: Yes. Both connectors comply with MIL-DTL-24308 military specification, ensuring equivalent performance and reliability standards for military and aerospace applications.

Q: What is the significance of the contact finish thickness specification on the substitute part?

A: The Positronic part specifies contact finish thickness at 50.0µin (1.27µm), providing defined gold plating thickness for wear resistance and electrical conductivity. The TE Connectivity part does not specify this parameter, though both use gold contact finish.

Q: Are both parts RoHS compliant?

A: No. Both the TE Connectivity M24308/3-1F and Positronic M24308/3-1F are RoHS non-compliant due to cadmium plating on the shell material. Applications requiring RoHS compliance require alternative connector solutions.

Q: What wire gauge compatibility does the substitute support?

A: The Positronic M24308/3-1F supports 20-28 AWG wire gauge for solder cup termination. The TE Connectivity part does not specify wire gauge compatibility.

Q: Can the substitute handle higher current applications?

A: Yes. The Positronic M24308/3-1F is rated for 7.5A compared to the TE Connectivity part's 5A rating, allowing operation in higher current applications within the same connector form factor.