STMM-113-02-G-D-RA Equivalent & Substitute Parts

Part Overview

The STMM-113-02-G-D-RA is an active rectangular connector header manufactured by Samtec Inc. in the Flex Stack STMM series. This through-hole, right-angle connector features 26 positions across 2 rows with 0.079" (2.00mm) pitch and is designed for board-to-cable/wire applications. The connector employs shrouded 4-wall construction with push-pull fastening and solder termination. Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or specific application needs while maintaining electrical and mechanical compatibility.

Substiute Parts

STMM-113-02-G-D-RA

Samtec Inc.In Stock: 1003STMM-113-02-G-D-RA Datasheet

Current PartRFQ

957220-5002-AR

3MIn Stock: 7176957220-5002-AR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of rectangular connectors is determined by strict alignment of electrical and mechanical parameters. The primary criteria for the STMM-113-02-G-D-RA are:

• Pitch - Mating: 0.079" (2.00mm)
• 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

The substitute part 957220-5002-AR from 3M shares the core pitch, row configuration, connector type, mounting style, shrouding, termination method, and fastening mechanism. However, the number of positions differs (20 vs. 26), which affects circuit density and application fit. This difference must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the STMM-113-02-G-D-RA and 957220-5002-AR are active products with ROHS3 compliance and unlimited moisture sensitivity ratings, making them suitable for current production environments.

The STMM-113-02-G-D-RA operates across a wider temperature range (-55°C to 125°C) compared to the 957220-5002-AR (-40°C to 105°C). Applications requiring extended low-temperature operation below -40°C or sustained operation above 105°C necessitate the Samtec part.

The STMM-113-02-G-D-RA supports a 3A current rating per contact, while the 957220-5002-AR is rated for 1A per contact. High-current applications require the Samtec connector.

The STMM-113-02-G-D-RA provides 26 positions versus 20 positions in the 957220-5002-AR. Circuit designs requiring more than 20 signal or power connections cannot use the 3M substitute without redesign.

The STMM-113-02-G-D-RA uses Liquid Crystal Polymer insulation, while the 957220-5002-AR uses thermoplastic insulation. The LCP material in the Samtec part provides superior dimensional stability and chemical resistance in demanding environments.

Frequently Asked Questions (FAQ)

Q: Can the 957220-5002-AR directly replace the STMM-113-02-G-D-RA in all applications?

A: No. The 957220-5002-AR has 20 positions versus 26 positions in the STMM-113-02-G-D-RA. Direct substitution is only possible if your circuit design uses 20 or fewer connections. Additionally, the current rating difference (1A vs. 3A) and operating temperature range difference must be evaluated against application requirements.

Q: What are the critical parameters for connector substitution in this category?

A: Pitch, number of rows, row spacing, connector type, contact type, mounting style, shrouding configuration, termination method, and fastening mechanism must match. Position count, current rating, temperature range, and contact material are secondary parameters that determine application suitability.

Q: Are both connectors RoHS compliant?

A: Yes. Both the STMM-113-02-G-D-RA and 957220-5002-AR are ROHS3 compliant and have unlimited moisture sensitivity ratings (MSL 1).

Q: What is the difference in insulation material between these connectors?

A: The STMM-113-02-G-D-RA uses Liquid Crystal Polymer (LCP) insulation, while the 957220-5002-AR uses thermoplastic insulation. LCP provides better dimensional stability, higher temperature capability, and superior chemical resistance.

Q: Which connector should I select for high-current applications?

A: The STMM-113-02-G-D-RA with its 3A per-contact rating is suitable for higher current applications. The 957220-5002-AR is limited to 1A per contact.

Q: What is the temperature operating range difference?

A: The STMM-113-02-G-D-RA operates from -55°C to 125°C, while the 957220-5002-AR operates from -40°C to 105°C. Applications requiring extended temperature range must use the Samtec connector.