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

Part Overview

The STMM-115-02-S-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 2.00mm pitch and is designed for board-to-cable/wire applications. The connector is shrouded with 4-wall protection and utilizes push-pull fastening. Finding equivalent or substitute parts may be necessary due to inventory constraints, supply chain considerations, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

STMM-115-02-S-D-RA

Samtec Inc.In Stock: 1130STMM-115-02-S-D-RA Datasheet

Current PartRFQ

LTMM-115-02-S-D-RA

Samtec Inc.In Stock: 1306LTMM-115-02-S-D-RA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STMM-115-02-S-D-RA is determined by 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 Finish - Mating: Gold
• Contact Material: Phosphor Bronze
• Insulation Material: Liquid Crystal Polymer (LCP)
• Operating Temperature: -55°C ~ 125°C

The LTMM-115-02-S-D-RA qualifies as a substitute part based on matching all critical electrical and mechanical parameters. The primary distinction is the application style: STMM-115-02-S-D-RA is configured for board-to-cable/wire connections, while LTMM-115-02-S-D-RA is configured for board-to-board connections. Both connectors maintain identical mating pitch, position count, row configuration, shrouding design, and contact specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the STMM-115-02-S-D-RA and LTMM-115-02-S-D-RA are active products from Samtec Inc. with ROHS3 compliance and identical regulatory classifications (ECCN: EAR99, HTSUS: 8536.69.4040). Selection between these parts depends on application requirements:

The STMM-115-02-S-D-RA is specified for board-to-cable/wire interconnections and is the primary choice when cable harness integration is required. The LTMM-115-02-S-D-RA is specified for board-to-board interconnections and serves as a substitute when board-level stacking or direct PCB-to-PCB connections are the application requirement. Both connectors maintain identical electrical performance characteristics, mating pitch, position count, and thermal operating range. The minimal insulation height variance (0.236" versus 0.237") is within manufacturing tolerance and does not affect functional compatibility.

Frequently Asked Questions (FAQ)

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

A: The LTMM-115-02-S-D-RA matches all critical electrical and mechanical parameters of the STMM-115-02-S-D-RA. However, the primary design difference is application style: STMM is configured for board-to-cable/wire connections, while LTMM is configured for board-to-board connections. Substitution is valid only if your application can accommodate the board-to-board configuration.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching: mating pitch (2.00mm), position count (30), row configuration (2 rows), row spacing (2.00mm), connector type (header), contact type (male pin), mounting style (through-hole right-angle), shrouding (4-wall), termination method (solder), fastening type (push-pull), contact finish (gold), contact material (phosphor bronze), and insulation material (LCP).

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant, carry identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications, and maintain MSL 1 (Unlimited) moisture sensitivity ratings. No compliance or certification differences exist between the two parts.

Q: What is the significance of the insulation height difference?

A: The insulation height variance between STMM-115-02-S-D-RA (0.236") and LTMM-115-02-S-D-RA (0.237") is 0.001 inches (0.03mm) and falls within standard manufacturing tolerances. This difference does not affect functional compatibility or performance.

Q: Are both parts currently available?

A: Both the STMM-115-02-S-D-RA and LTMM-115-02-S-D-RA are active products with current inventory availability. The STMM variant has 1104 pieces in stock, while the LTMM variant has 1198 pieces in stock.