STMM-110-02-F-D-RA Equivalent & Substitute Parts

Part Overview

The STMM-110-02-F-D-RA is an active rectangular connector header manufactured by Samtec Inc. This through-hole, right-angle connector features 20 positions across 2 rows with 0.079" (2.00mm) pitch spacing. The connector is designed for board-to-cable/wire applications with shrouded 4-wall construction and 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-110-02-F-D-RA

Samtec Inc.In Stock: 1077STMM-110-02-F-D-RA Datasheet

Current PartRFQ

LTMM-110-02-F-D-RA

Samtec Inc.In Stock: 775LTMM-110-02-F-D-RA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the STMM-110-02-F-D-RA are identified based on strict electrical and mechanical compatibility criteria. The primary substitute, LTMM-110-02-F-D-RA, shares the following critical parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 20
• Number of Rows: 2
• Pitch - Mating: 0.079" (2.00mm)
• Row Spacing - Mating: 0.079" (2.00mm)
• Mounting Type: Through Hole, Right Angle
• Shrouding: Shrouded - 4 Wall
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Finish - Mating: Gold
• Contact Finish - Post: Tin
• Contact Material: Phosphor Bronze
• Insulation Material: Liquid Crystal Polymer (LCP)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The LTMM-110-02-F-D-RA belongs to the Flex Stack LTMM series and is designed for board-to-board applications, whereas the STMM-110-02-F-D-RA is designed for board-to-cable/wire applications. Both connectors maintain identical mating pitch, row spacing, contact configuration, and electrical properties necessary for functional interchangeability in applications where the mounting style difference is not a constraint.

Parameter Comparison

Engineering Selection Recommendations

Both the STMM-110-02-F-D-RA and LTMM-110-02-F-D-RA are active products from Samtec Inc. with ROHS3 compliance and identical electrical specifications. The primary distinction is the application style: STMM is specified for board-to-cable/wire connections, while LTMM is specified for board-to-board connections.

The STMM-110-02-F-D-RA supports an operating temperature range of -55°C to 125°C with a 3A current rating. The LTMM-110-02-F-D-RA operates within -55°C to 105°C. Selection between these parts should be based on the specific application mounting requirement and thermal environment. Both parts maintain identical contact pitch, row spacing, shrouding configuration, and contact materials, ensuring mechanical and electrical compatibility where application constraints permit substitution.

Frequently Asked Questions (FAQ)

Q: Can LTMM-110-02-F-D-RA be used as a direct replacement for STMM-110-02-F-D-RA?

A: Substitution is possible when the application mounting style permits. The LTMM series is designed for board-to-board applications while the STMM series is designed for board-to-cable/wire applications. Both connectors share identical mating pitch (0.079"), row spacing (0.079"), contact configuration (20 positions, 2 rows), and electrical properties. Verify that your application can accommodate the board-to-board mounting style of the LTMM variant.

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

A: Critical parameters for substitution compatibility include: connector type (Header), contact type (Male Pin), number of positions (20), number of rows (2), mating pitch (0.079"), row spacing (0.079"), mounting type (Through Hole, Right Angle), shrouding (Shrouded - 4 Wall), termination (Solder), fastening type (Push-Pull), contact materials (Phosphor Bronze), and insulation material (Liquid Crystal Polymer). Both parts match these specifications.

Q: Are there temperature rating differences between these parts?

A: Yes. The STMM-110-02-F-D-RA operates from -55°C to 125°C, while the LTMM-110-02-F-D-RA operates from -55°C to 105°C. For applications requiring operation above 105°C, the STMM variant is required.

Q: Do both parts have the same RoHS and MSL compliance?

A: Yes. Both the STMM-110-02-F-D-RA and LTMM-110-02-F-D-RA are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

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

A: The STMM-110-02-F-D-RA has an insulation height of 0.236" (6.00mm), while the LTMM-110-02-F-D-RA has an insulation height of 0.237" (6.03mm). This 0.01mm difference is negligible for most applications.

Q: Are the contact finishes identical?

A: Yes. Both connectors feature gold-plated mating contacts with 3.00µin (0.076µm) thickness and tin-plated posts, ensuring equivalent electrical performance and corrosion resistance.