STMM-115-02-F-D-RA Equivalent & Substitute Parts

Part Overview

The STMM-115-02-F-D-RA is an active rectangular connector header manufactured by Samtec Inc. This through-hole, right-angle connector features 30 positions across 2 rows with 0.079" (2.00mm) pitch spacing. The connector is designed for board-to-cable/wire applications with shrouded 4-wall construction and push-pull fastening. Finding equivalent or substitute parts may be necessary due to inventory constraints, application-specific requirements, or design modifications that permit alternative connector series within compatible electrical and mechanical parameters.

Substiute Parts

STMM-115-02-F-D-RA

Samtec Inc.In Stock: 1012STMM-115-02-F-D-RA Datasheet

Current PartRFQ

LTMM-115-02-F-D-RA

Samtec Inc.In Stock: 1862LTMM-115-02-F-D-RA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STMM-115-02-F-D-RA is based on strict alignment of the following critical parameters:

• Pitch - Mating: 0.079" (2.00mm)
• Number of Positions: 30
• Number of Rows: 2
• Row Spacing - Mating: 0.079" (2.00mm)
• Connector Type: Header
• Contact Type: Male Pin
• Mounting Type: Through Hole, Right Angle
• Shrouding: Shrouded - 4 Wall
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Shape: Square
• Contact Material: Phosphor Bronze
• Insulation Material: Liquid Crystal Polymer (LCP)
• Contact Finish - Mating: Gold
• Contact Finish - Post: Tin

The LTMM-115-02-F-D-RA qualifies as a substitute part because it maintains all critical electrical and mechanical parameters. The primary difference is the connector series designation (LTMM versus STMM) and application style (board-to-board versus board-to-cable/wire), along with minor variations in insulation height and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Both the STMM-115-02-F-D-RA and LTMM-115-02-F-D-RA are active products manufactured by Samtec Inc. and maintain ROHS3 compliance with MSL 1 (Unlimited) moisture sensitivity ratings. The connectors share identical electrical and mechanical specifications for mating pitch, contact geometry, termination method, and shrouding configuration.

The primary distinction between these parts is the operating temperature range. The STMM-115-02-F-D-RA supports -55°C to 125°C, while the LTMM-115-02-F-D-RA supports -55°C to 105°C. Applications requiring operation above 105°C must use the STMM-115-02-F-D-RA. For applications within the -55°C to 105°C range, either part is suitable based on inventory availability and application style requirements (board-to-cable/wire versus board-to-board).

Frequently Asked Questions (FAQ)

Q: Can LTMM-115-02-F-D-RA be used as a direct replacement for STMM-115-02-F-D-RA?

A: The LTMM-115-02-F-D-RA can be used as a substitute when the application operates within the -55°C to 105°C temperature range. Both connectors maintain identical mating pitch, position count, row spacing, contact geometry, and termination specifications. The application style difference (board-to-board versus board-to-cable/wire) does not affect electrical or mechanical compatibility for connector interface purposes.

Q: What is the difference in insulation height between these parts?

A: The STMM-115-02-F-D-RA has an insulation height of 0.236" (6.00mm), while the LTMM-115-02-F-D-RA has an insulation height of 0.237" (6.03mm). This 0.001" (0.03mm) difference is negligible for most PCB layout and mechanical assembly applications.

Q: Are both parts RoHS compliant?

A: Yes, both the STMM-115-02-F-D-RA and LTMM-115-02-F-D-RA are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the current rating for these connectors?

A: The STMM-115-02-F-D-RA has a specified current rating of 3A. The current rating for the LTMM-115-02-F-D-RA is not provided in the available specifications.

Q: Can these connectors be used interchangeably in high-temperature applications?

A: No. Applications requiring sustained operation above 105°C must use the STMM-115-02-F-D-RA, which is rated to 125°C. The LTMM-115-02-F-D-RA is limited to 105°C maximum operating temperature.