MS3116F12-8P Equivalent & Substitute Parts

Part Overview

The MS3116F12-8P is an 8-position circular connector plug with male pins and solder cup termination, manufactured by Amphenol Industrial Operations. This connector conforms to MIL-DTL-26482 Series I specifications and is designed for aerospace, military, communication systems, and industrial applications requiring environmental resistance and reliable bayonet-lock coupling.

The MS3116F12-8P is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain system compatibility, ensure continued supply chain access, and support legacy equipment maintenance and new production builds.

Key Parameters

Parameter	MS3116F12-8P
Connector Type	Plug, Male Pins
Number of Positions	8
Shell Size - Insert	12-8
Termination	Solder Cup
Fastening Type	Bayonet Lock
Mounting Type	Free Hanging (In-Line)
Shell Material	Aluminum
Shell Finish	Olive Drab Chromate over Cadmium
Contact Finish - Mating	Gold
Ingress Protection	Environment Resistant
Operating Temperature	-55°C ~ 125°C
Series	Military, MIL-DTL-26482 Series I
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MS3116F12-8P is determined by the following critical parameters:

Connector Type & Pin Configuration: Plug with male pins, 8-position configuration
Shell Size & Insert Designation: 12-8 shell size and insert combination
Fastening Mechanism: Bayonet lock coupling
Termination Method: Solder-based termination (solder cup or solder termination)
Mounting Configuration: Free hanging, in-line mounting
Environmental Rating: Environment resistant classification
Operating Temperature Range: -55°C to 125°C capability
Series Compliance: MIL-DTL-26482 style or equivalent military circular connector standard

The MSW06E12-8P-SR qualifies as a substitute part because it matches all critical parameters: 8-position plug with male pins, 12-8 shell size, bayonet lock fastening, solder termination, free hanging mounting, environment resistant rating, and identical operating temperature range. Both parts conform to MIL-DTL-26482 style specifications.

Parameter Comparison

Parameter	MS3116F12-8P (Main Part)	MSW06E12-8P-SR (Substitute)
Manufacturer	Amphenol Industrial Operations	Milspecwest, LLC
Connector Type	Plug, Male Pins	Plug, Male Pins
Number of Positions	8	8
Shell Size - Insert	12-8	12-8
Termination	Solder Cup	Solder
Fastening Type	Bayonet Lock	Bayonet Lock
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Shell Material	Aluminum	Aluminum
Ingress Protection	Environment Resistant	Environment Resistant
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C
Series	MIL-DTL-26482 Series I	26482 Style Connectors
Product Status	Discontinued at DiGi Electronics	Active
RoHS Status	RoHS non-compliant	RoHS non-compliant
Current Rating	Not specified	7.5A
Voltage Rating	Not specified	800V

Engineering Selection Recommendations

The MSW06E12-8P-SR is a qualified substitute for the MS3116F12-8P based on matching mechanical and electrical interface parameters. Both connectors conform to MIL-DTL-26482 style specifications and maintain identical operating temperature ranges and environmental resistance ratings.

The MSW06E12-8P-SR offers the advantage of active product status, ensuring continued availability and supply chain support. Both parts are RoHS non-compliant, maintaining consistency with legacy military and aerospace applications where cadmium plating and chromate finishes are specified.

The MSW06E12-8P-SR provides specified current and voltage ratings (7.5A at 800V), whereas the MS3116F12-8P does not include these electrical parameters in available documentation. For applications requiring explicit electrical performance verification, the MSW06E12-8P-SR's published ratings provide additional design confidence.

Frequently Asked Questions (FAQ)

Q: Can the MSW06E12-8P-SR directly replace the MS3116F12-8P in existing assemblies?

A: Yes. Both connectors share identical shell size (12-8), pin count (8), fastening mechanism (bayonet lock), mounting configuration (free hanging), and operating temperature range (-55°C to 125°C). Mechanical and electrical interface compatibility is maintained.

Q: What is the difference between "solder cup" and "solder" termination?

A: Both termination methods use solder for wire attachment. Solder cup termination features a cup-shaped contact cavity; solder termination indicates general solder-based wire connection. Both are compatible with standard solder wire attachment processes.

Q: Are there differences in shell finish between these parts?

A: The MS3116F12-8P specifies olive drab chromate over cadmium finish. The MSW06E12-8P-SR specifies cadmium finish. Both finishes provide corrosion resistance and environmental protection. Finish differences may affect appearance but do not impact electrical or mechanical interface compatibility.

Q: Why is the MS3116F12-8P discontinued?

A: Product discontinuation at DiGi Electronics reflects supplier inventory decisions and market demand. The MSW06E12-8P-SR remains active and available, providing continued access to MIL-DTL-26482 style 8-position connectors with identical interface specifications.

Q: Are both parts suitable for aerospace and military applications?

A: Yes. Both connectors conform to MIL-DTL-26482 specifications and are rated for aerospace, military, communication systems, and industrial applications. Both maintain RoHS non-compliant status, consistent with military and aerospace procurement requirements.

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