BM13B-XASS-TF(LF)(SN) Equivalent & Substitute Parts

Part Overview

The BM13B-XASS-TF(LF)(SN) is a surface mount rectangular connector header manufactured by JST Sales America Inc., designed for board-to-cable/wire applications with 13 positions at 2.50mm pitch. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The connector features shrouded 4-wall construction, solder termination, and locking ramp fastening suitable for applications requiring secure mating interfaces.

Substiute Parts

BM13B-XASS-TF(LF)(SN)

JST Sales America Inc.In Stock: 952BM13B-XASS-TF(LF)(SN) Datasheet

Current PartRFQ

0740990013

MolexIn Stock: 12070740990013 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BM13B-XASS-TF(LF)(SN) is constrained by the following critical parameters: 13-position configuration, surface mount technology, shrouded 4-wall design, solder termination, and male pin contact type. The mating pitch of 2.50mm is a primary mechanical constraint that limits direct interchangeability.

The identified substitute part, Molex 0740990013, shares the following compatible attributes: 13-position count, surface mount mounting, shrouded 4-wall shrouding, solder termination, and male pin contacts. However, this substitute operates at a different mating pitch of 2.54mm (0.100"), which represents a mechanical incompatibility with existing mating connectors designed for the JST 2.50mm pitch specification.

Parameter Comparison

Engineering Selection Recommendations

The BM13B-XASS-TF(LF)(SN) is obsolete, requiring evaluation of alternatives for new designs or ongoing production support. The Molex 0740990013 provides functional equivalence in connector topology, position count, mounting method, and regulatory compliance (UL94 V-0, ROHS3). Both components maintain identical flammability ratings and RoHS compliance status.

Critical consideration: The 0.04mm pitch difference (2.50mm versus 2.54mm) creates mechanical incompatibility with existing mating connectors. This substitute is suitable only for applications where the mating interface can be redesigned or where the pitch tolerance is acceptable within the system architecture. The Molex part is currently in active production status, ensuring long-term availability compared to the obsolete JST component.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0740990013 directly replace the BM13B-XASS-TF(LF)(SN) in existing assemblies?

A: Direct replacement is not possible due to the mating pitch difference. The JST component operates at 2.50mm pitch while the Molex substitute operates at 2.54mm pitch. Existing mating connectors designed for 2.50mm spacing will not properly engage with the 2.54mm pitch header.

Q: Are there electrical performance differences between these components?

A: The BM13B-XASS-TF(LF)(SN) specifies 3A current rating and 250V voltage rating. The Molex 0740990013 does not provide current or voltage ratings in the available data. Electrical performance verification is required for applications with defined power requirements.

Q: Do both components meet the same regulatory standards?

A: Yes. Both the JST and Molex components are UL94 V-0 rated and ROHS3 compliant, meeting equivalent flammability and environmental compliance requirements.

Q: What are the mechanical differences in fastening?

A: The JST component uses a locking ramp fastening mechanism, while the Molex substitute uses a latch holder design. These represent different mechanical engagement methods and may affect mating force and retention characteristics.

Q: Is the Molex part suitable for new product designs?

A: The Molex 0740990013 is in active production status, making it suitable for new designs requiring a 13-position surface mount shrouded header at 2.54mm pitch. Design validation is required to confirm compatibility with the intended mating connector specification.