LTMM-112-02-G-D-SM Equivalent & Substitute Parts

Part Overview

The LTMM-112-02-G-D-SM is a rectangular connector header manufactured by Samtec Inc., designed for surface mount board-to-board applications. This connector features 24 positions arranged in 2 rows with 0.079" (2.00mm) pitch spacing and incorporates push-pull fastening with 4-wall shrouding. The component is actively produced and ROHS3 compliant, making it suitable for modern electronic assemblies requiring reliable interconnection in compact form factors.

Equivalent and substitute parts are identified when design requirements permit flexibility in connector style, mounting configuration, or application interface while maintaining electrical and mechanical compatibility within the Flex Stack series.

Substiute Parts

LTMM-112-02-G-D-SM

Samtec Inc.In Stock: 771LTMM-112-02-G-D-SM Datasheet

Current PartRFQ

STMM-112-02-G-D-SM

Samtec Inc.In Stock: 1341STMM-112-02-G-D-SM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTMM-112-02-G-D-SM is determined by the following critical parameters:

• Pitch spacing: 0.079" (2.00mm) mating pitch and row spacing
• Position count: 24 positions in 2-row configuration
• Contact type: Male pin with gold-plated mating surface
• Mounting: Surface mount with solder termination
• Shrouding: 4-wall shrouded design with push-pull fastening
• Environmental compliance: ROHS3 compliant, MSL 1 rating
• Operating range: -55°C to 125°C

The STMM-112-02-G-D-SM qualifies as a substitute part within the Flex Stack series. Both components share identical electrical and mechanical specifications for pitch, position count, contact configuration, and environmental ratings. The primary distinction lies in connector style: LTMM is configured for board-to-board applications, while STMM is configured for board-to-cable/wire applications. This difference permits substitution only when the application interface requirement can accommodate the alternative connection style.

Parameter Comparison

Engineering Selection Recommendations

Both the LTMM-112-02-G-D-SM and STMM-112-02-G-D-SM maintain active product status with ROHS3 compliance and identical environmental certifications. Selection between these parts is determined by application interface requirements:

Use LTMM-112-02-G-D-SM for board-to-board interconnection applications where the mating connector is mounted on a separate PCB.

Use STMM-112-02-G-D-SM for board-to-cable/wire interconnection applications where the mating connector is integrated into a cable or wire harness assembly.

Both components satisfy identical electrical and mechanical specifications within the Flex Stack series, including pitch spacing, position count, contact configuration, operating temperature range, and regulatory compliance. The choice between these parts depends solely on the physical interface requirement of the application.

Frequently Asked Questions (FAQ)

Q: Can STMM-112-02-G-D-SM be used as a direct replacement for LTMM-112-02-G-D-SM?

A: Substitution is possible only when the application interface requirement permits board-to-cable/wire connection instead of board-to-board connection. The electrical and mechanical specifications are identical, but the connector style differs. Verify that your mating connector or cable assembly is compatible with the STMM series before substitution.

Q: What are the critical parameters that must match for substitution?

A: The following parameters must remain constant: 0.079" (2.00mm) pitch spacing, 24-position 2-row configuration, male pin contact type, gold-plated mating surface, surface mount termination, 4-wall shrouding, and push-pull fastening. Any deviation in these parameters disqualifies substitution.

Q: Are there differences in current or voltage ratings between these parts?

A: Current rating is specified as 3A for STMM-112-02-G-D-SM. No current or voltage rating is provided for LTMM-112-02-G-D-SM in the available specifications. Consult detailed datasheets for complete electrical performance data.

Q: Do both parts have the same environmental compliance?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level and operate across the -55°C to 125°C temperature range. Both are classified as EAR99 for export control purposes.

Q: What is the significance of the keying slot feature?

A: The keying slot provides mechanical polarization to prevent incorrect mating orientation. This feature is present on both LTMM-112-02-G-D-SM and STMM-112-02-G-D-SM, ensuring consistent connector alignment during assembly.