STMM-120-01-G-D Equivalent & Substitute Parts

Part Overview

The STMM-120-01-G-D is a rectangular connector header manufactured by Samtec Inc., designed for through-hole mounting applications. This vertical header features 40 positions arranged in 2 rows with 0.079" (2.00mm) pitch spacing, suitable for board-to-cable/wire connections. The connector is actively produced and stocked, with 864 units available in inventory. Alternative components may be required due to application-specific requirements, supply chain considerations, or design modifications that necessitate different electrical or mechanical characteristics.

Substiute Parts

STMM-120-01-G-D

Samtec Inc.In Stock: 946STMM-120-01-G-D Datasheet

Current PartRFQ

957240-6002-AR

3MIn Stock: 5703957240-6002-AR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STMM-120-01-G-D is determined by the following critical parameters:

• Position Count & Row Configuration: 40 positions in 2-row arrangement
• Pitch Specification: 0.079" (2.00mm) mating pitch and row spacing
• Connector Type & Contact Type: Header with male pin contacts
• Mounting Method: Through-hole solder termination
• Shrouding Configuration: Shrouded 4-wall design with keying slot
• Fastening Mechanism: Push-pull fastening type
• Compliance Requirements: ROHS3 compliance and active product status

The substitute part 957240-6002-AR (3M) shares the core functional parameters of position count, row configuration, pitch spacing, connector type, mounting method, shrouding, and fastening type. However, differences exist in contact length specifications, insulation height, contact finish composition, current rating, and operating temperature range. These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the STMM-120-01-G-D and 957240-6002-AR maintain active product status and ROHS3 compliance, ensuring continued availability and regulatory alignment. Selection between these components must account for the following parameter differences:

The STMM-120-01-G-D supports a 3A current rating with an operating temperature range of -55°C to 125°C, utilizing Liquid Crystal Polymer insulation material. The 957240-6002-AR provides a 1A current rating with an operating temperature range of -40°C to 105°C, utilizing thermoplastic insulation material. Applications requiring higher current capacity or extended low-temperature operation must use the STMM-120-01-G-D. Applications operating within the 957240-6002-AR temperature and current specifications may utilize either component based on supply availability and packaging requirements.

Frequently Asked Questions (FAQ)

Q: Can the 957240-6002-AR directly replace the STMM-120-01-G-D in all applications?

A: Direct replacement is not universal. The 957240-6002-AR has a lower current rating (1A vs. 3A) and narrower operating temperature range (-40°C to 105°C vs. -55°C to 125°C). Replacement is only valid for applications operating within these reduced specifications.

Q: What are the key mechanical compatibility factors?

A: Both connectors share identical position count (40), row configuration (2 rows), mating pitch (0.079"), row spacing (0.079"), shrouding type (4-wall), and fastening mechanism (push-pull). Mechanical compatibility is established for these parameters.

Q: How do the insulation materials differ?

A: The STMM-120-01-G-D uses Liquid Crystal Polymer (LCP) insulation, while the 957240-6002-AR uses thermoplastic insulation. LCP provides superior thermal and chemical resistance properties.

Q: What packaging differences exist?

A: The STMM-120-01-G-D is supplied in tube packaging, while the 957240-6002-AR is supplied in tray packaging. Packaging selection may affect handling, storage, and assembly processes.

Q: Are both components RoHS compliant?

A: Yes, both the STMM-120-01-G-D and 957240-6002-AR are ROHS3 compliant, meeting current regulatory requirements for restricted substances.