D38999/26KB98SN Equivalent & Substitute Parts

Part Overview

The D38999/26KB98SN is a 6-position circular connector plug with female sockets, manufactured by Amphenol Aerospace Operations. This connector is part of the Military MIL-DTL-38999 Series III Tri-Start™ TV product line and is actively produced. The part features crimp termination, threaded fastening, and is qualified for aerospace, aviation, marine, and military applications. Finding equivalent and substitute parts is necessary to ensure supply chain continuity, manage inventory across multiple suppliers, and maintain design flexibility in production environments where component availability may vary.

Substiute Parts

D38999/26KB98SN

Amphenol Aerospace OperationsIn Stock: 1091D38999/26KB98SN Datasheet

Current PartRFQ

D38999/26FB98SN

Amphenol Aerospace OperationsIn Stock: 889D38999/26FB98SN Datasheet

SimilarRFQ

D38999/26MB98SN

Souriau-Sunbank by EatonIn Stock: 937D38999/26MB98SN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the D38999/26KB98SN are qualified based on the following critical parameters that must remain constant across all alternatives:

• Connector type: Plug with female sockets
• Number of positions: 6
• Shell size (MIL B, Insert 11-98)
• Termination method: Crimp
• Fastening type: Threaded
• Mounting configuration: Free Hanging (In-Line)
• Operating temperature range: -65°C ~ 200°C
• Contact finish: Gold at 50.0µin (1.27µm) thickness
• Shielding: Shielded configuration
• MIL-DTL-38999 Series III qualification

Variations permitted in substitute parts include shell material composition, shell finish type, ingress protection rating, and manufacturer identity, provided all critical parameters remain aligned with the original specification.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and meet MIL-DTL-38999 Series III qualification requirements. Selection between these alternatives should be based on the following compliance and certification factors:

D38999/26KB98SN (Amphenol, Stainless Steel): This part is ROHS3 compliant and REACH affected. It features stainless steel construction with passivated finish, providing corrosion resistance suitable for marine and aerospace environments. This configuration is recommended for applications requiring full RoHS compliance.

D38999/26FB98SN (Amphenol, Aluminum): This part is ROHS3 compliant and REACH affected. It features aluminum construction with electroless nickel finish. This configuration offers weight reduction compared to stainless steel while maintaining compliance standards. Suitable for weight-sensitive aerospace applications.

D38999/26MB98SN (Souriau-Sunbank by Eaton, Composite): This part is RoHS non-compliant and does not list REACH status. It features composite shell material with nickel finish and provides IP67 ingress protection rating. A specified current rating of 7.5A is documented. This configuration is suitable for applications where RoHS compliance is not required and enhanced environmental sealing is beneficial.

Frequently Asked Questions (FAQ)

Q: Can D38999/26FB98SN replace D38999/26KB98SN in all applications?

A: Yes, from a functional and mechanical standpoint. Both parts share identical connector type, position count, shell size, termination method, fastening type, and operating temperature range. The primary difference is shell material (aluminum vs. stainless steel) and shell finish (electroless nickel vs. passivated). Both are ROHS3 compliant. Material selection should be based on environmental exposure and weight requirements specific to your application.

Q: What is the key difference between D38999/26MB98SN and the other two substitutes?

A: D38999/26MB98SN differs in three significant ways: (1) it is RoHS non-compliant, (2) it features composite shell material instead of metal, and (3) it provides IP67 ingress protection rating instead of general environment resistance. Additionally, it specifies a 7.5A current rating. This part is suitable for applications where RoHS compliance is not mandated and enhanced waterproofing is required.

Q: Are all three parts mechanically interchangeable?

A: Yes. All three parts maintain identical mechanical specifications: 6-position plug configuration, MIL size B shell, 11-98 insert size, threaded fastening, and free-hanging in-line mounting. They are mechanically interchangeable in connector interfaces.

Q: Which substitute should I select for a new design?

A: For new designs, D38999/26KB98SN or D38999/26FB98SN are recommended due to ROHS3 compliance. Choose D38999/26KB98SN for maximum corrosion resistance (stainless steel) or D38999/26FB98SN for weight reduction (aluminum). Select D38999/26MB98SN only if RoHS compliance is not a design requirement and IP67 sealing is necessary.

Q: Do these parts have different packaging considerations?

A: D38999/26KB98SN and D38999/26FB98SN are supplied in bulk packaging. D38999/26MB98SN is supplied in bag packaging. Verify packaging requirements with your procurement specifications before ordering.

Q: What is the contact finish specification across all three parts?

A: All three parts feature gold contact finish at the mating surface with a thickness of 50.0µin (1.27µm). This specification is identical across all substitutes.