STMM-105-02-F-D-SM Equivalent & Substitute Parts

Part Overview

The STMM-105-02-F-D-SM is a rectangular connector header manufactured by Samtec Inc., designed for surface mount applications. This connector features 10 positions arranged in 2 rows with 0.079" (2.00mm) pitch spacing, utilizing a shrouded 4-wall design with push-pull fastening. The part is classified as Board to Cable/Wire style and maintains Active product status with ROHS3 compliance. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling component interchangeability in applications where form factor and interface requirements match.

Substiute Parts

STMM-105-02-F-D-SM

Samtec Inc.In Stock: 1019STMM-105-02-F-D-SM Datasheet

Current PartRFQ

LTMM-105-02-F-D-SM

Samtec Inc.In Stock: 1214LTMM-105-02-F-D-SM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STMM-105-02-F-D-SM is determined by strict alignment of the following critical parameters:

Electrical Parameters:

• Number of Positions: 10
• Number of Rows: 2
• Pitch - Mating: 0.079" (2.00mm)
• Row Spacing - Mating: 0.079" (2.00mm)
• Contact Type: Male Pin
• Contact Material: Phosphor Bronze
• Contact Finish - Mating: Gold
• Contact Finish - Post: Tin

Mechanical Parameters:

• Connector Type: Header
• Mounting Type: Surface Mount
• Shrouding: Shrouded - 4 Wall
• Fastening Type: Push-Pull
• Contact Length - Mating: 0.120" (3.05mm)
• Insulation Height: 0.190" (4.83mm)
• Contact Shape: Square
• Insulation Material: Liquid Crystal Polymer (LCP)
• Insulation Color: Black
• Features: Keying Slot

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The LTMM-105-02-F-D-SM qualifies as a substitute based on matching all critical electrical and mechanical parameters. Variations in operating temperature range and connector style (Board to Board versus Board to Cable/Wire) do not preclude substitution when application requirements permit.

Parameter Comparison

Engineering Selection Recommendations

Both the STMM-105-02-F-D-SM and LTMM-105-02-F-D-SM maintain Active product status with ROHS3 compliance and identical Moisture Sensitivity Level ratings. Selection between these parts is determined by application interface requirements:

The STMM-105-02-F-D-SM is specified for Board to Cable/Wire applications, while the LTMM-105-02-F-D-SM is configured for Board to Board interconnection. The operating temperature range of the STMM-105-02-F-D-SM extends to 125°C, compared to 105°C for the LTMM-105-02-F-D-SM. When application thermal requirements remain within the -55°C to 105°C range and connector style compatibility permits, the LTMM-105-02-F-D-SM provides equivalent electrical and mechanical performance.

Frequently Asked Questions (FAQ)

Q: What determines if LTMM-105-02-F-D-SM can substitute for STMM-105-02-F-D-SM?

A: Substitution is valid when the application interface requirement aligns with Board to Board connectivity and the operating temperature range does not exceed -55°C to 105°C. All electrical parameters, contact geometry, pitch spacing, shrouding configuration, and fastening mechanisms are identical between the two parts.

Q: Are the contact pitch and row spacing identical?

A: Yes. Both parts feature 0.079" (2.00mm) mating pitch and 0.079" (2.00mm) row spacing, ensuring mechanical and electrical compatibility at the connector interface level.

Q: What is the difference in connector style between these parts?

A: The STMM-105-02-F-D-SM is designed for Board to Cable/Wire applications, while the LTMM-105-02-F-D-SM is configured for Board to Board interconnection. This distinction affects the mating interface design and application context.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the STMM-105-02-F-D-SM and LTMM-105-02-F-D-SM are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), meeting identical regulatory and environmental requirements.

Q: What is the operating temperature difference?

A: The STMM-105-02-F-D-SM operates across -55°C to 125°C, while the LTMM-105-02-F-D-SM operates across -55°C to 105°C. Applications requiring operation above 105°C require the STMM-105-02-F-D-SM.

Q: Are the contact materials and finishes the same?

A: Yes. Both parts utilize Phosphor Bronze contact material with gold mating finish and tin post finish, providing identical electrical conductivity and corrosion resistance characteristics.