VS101621 Circular Connector Equivalent & Substitute Parts

Part Overview

The VS101621 is a 26-position circular connector plug with female sockets manufactured by Radiall USA, Inc. This connector features solder cup termination, threaded fastening, and is designed for industrial applications requiring robust electrical connections. The part maintains active product status with 894 units in current inventory. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component interchange based on matching electrical and mechanical specifications.

Substiute Parts

VS101621

Radiall USA, Inc.In Stock: 909VS101621 Datasheet

Current PartRFQ

97-3106A-28-12S

Amphenol Industrial OperationsIn Stock: 93197-3106A-28-12S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VS101621 are identified based on strict equivalence of core electrical and mechanical parameters. The substitution criteria are limited to the following parameters that must match identically:

• Connector type: Plug with female sockets
• Number of positions: 26
• Shell size designation: 28-12
• Termination method: Solder cup
• Fastening mechanism: Threaded coupling
• Mounting configuration: Free hanging (in-line)
• Shell material: Aluminum alloy
• Contact material: Copper alloy
• Contact finish: Silver
• Operating temperature range: -55°C ~ 125°C
• Features: Backshell and coupling nut included
• Shielding configuration: Unshielded

The substitute part 97-3106A-28-12S manufactured by Amphenol Industrial Operations satisfies all core substitution criteria. Variations in shell finish (green cadmium versus olive drab chromate over cadmium), insert material composition (chloroprene rubber versus diallyl phthalate), and backshell plating specifications do not preclude functional equivalence when electrical and mechanical interface requirements are met.

Parameter Comparison

Engineering Selection Recommendations

Both the VS101621 and 97-3106A-28-12S maintain active product status and are available in current inventory. Selection between these parts is determined by application-specific requirements and compliance considerations.

The VS101621 (Radiall USA) is specified when green cadmium shell finish is required by design documentation or when chloroprene rubber insert material is mandated by environmental or performance specifications.

The 97-3106A-28-12S (Amphenol Industrial) is specified when olive drab chromate over cadmium finish is required or when diallyl phthalate insert material is preferred. This part carries REACH Affected status and MSL 1 (Unlimited) designation, indicating broader environmental compliance applicability.

Both parts are RoHS non-compliant and carry EAR99 export classification. Current rating and voltage rating data are provided only for the VS101621 (13A, 500VAC/700VDC). The 97-3106A-28-12S does not include published current and voltage ratings in available documentation.

Frequently Asked Questions (FAQ)

Q: Can the 97-3106A-28-12S directly replace the VS101621 in existing assemblies?

A: Yes, when the application permits variation in shell finish and insert material. Both connectors share identical connector type, position count, shell size, termination method, fastening mechanism, and operating temperature range. Physical and electrical interface compatibility is maintained.

Q: What is the significance of the different insert materials (CR versus DAP)?

A: Chloroprene rubber (CR) and diallyl phthalate (DAP) are both acceptable insulating materials for circular connector inserts. Selection depends on application requirements for chemical resistance, temperature stability, and environmental exposure. The CR insert in the VS101621 and DAP insert in the 97-3106A-28-12S both support the specified operating temperature range of -55°C to 125°C.

Q: Why are current and voltage ratings not specified for the 97-3106A-28-12S?

A: Current and voltage ratings are not included in the available technical documentation for the 97-3106A-28-12S. When these electrical parameters are critical to application selection, the VS101621 specifications (13A, 500VAC/700VDC) should be referenced or the manufacturer should be consulted for equivalent ratings on the Amphenol part.

Q: What does REACH Affected status mean for the 97-3106A-28-12S?

A: REACH Affected status indicates that the part contains substances subject to the European Union's Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulation. This designation is relevant for applications with European Union supply chain requirements.

Q: Are both parts suitable for industrial applications?

A: Yes. The VS101621 is specified for industrial applications. The 97-3106A-28-12S is specified for both automotive and industrial applications, providing broader application flexibility.

Q: What is the difference between the shell finishes?

A: The VS101621 features green cadmium finish. The 97-3106A-28-12S features olive drab chromate over cadmium finish. Both finishes provide corrosion protection for the aluminum alloy shell. Selection is based on design specification or environmental exposure requirements.

Q: How does MSL rating affect component handling?

A: The VS101621 has MSL designation as Not Applicable. The 97-3106A-28-12S carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling. This provides operational flexibility for the Amphenol part in standard warehouse environments.