LTMM-106-02-L-D-SM Equivalent & Substitute Parts

Part Overview

The LTMM-106-02-L-D-SM is a rectangular connector header manufactured by Samtec Inc., designed for surface mount applications requiring board-to-board connectivity. This Surface Mount Device (SMD) connector features 12 positions arranged in 2 rows with 0.079" (2.00mm) pitch spacing and incorporates push-pull fastening with 4-wall shrouding. The part maintains Active product status and is ROHS3 compliant with MSL 1 rating, indicating suitability for standard storage and handling conditions. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and supply chain continuity for applications requiring compatible rectangular connector headers with matching electrical and mechanical specifications.

Substiute Parts

LTMM-106-02-L-D-SM

Samtec Inc.In Stock: 1031LTMM-106-02-L-D-SM Datasheet

Current PartRFQ

STMM-106-02-L-D-SM

Samtec Inc.In Stock: 1128STMM-106-02-L-D-SM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTMM-106-02-L-D-SM are identified based on strict equivalence of critical electrical and mechanical parameters. The substitution criteria are:

Primary Matching Parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 12
• Number of Rows: 2
• Pitch - Mating: 0.079" (2.00mm)
• Row Spacing - Mating: 0.079" (2.00mm)
• Mounting Type: Surface Mount
• Shrouding: Shrouded - 4 Wall
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Finish - Mating: Gold
• Contact Material: Phosphor Bronze
• Insulation Material: Liquid Crystal Polymer (LCP)
• RoHS Status: ROHS3 Compliant
• MSL: 1 (Unlimited)

Allowable Variations:

• Series designation (LTMM vs. STMM)
• Style (Board to Board vs. Board to Cable/Wire)
• Operating Temperature range (within industrial specifications)
• Current Rating (when specified in substitute)

The STMM-106-02-L-D-SM qualifies as a substitute based on matching all primary parameters while differing in series designation and connector style, which are design-selectable attributes rather than functional limitations.

Parameter Comparison

Engineering Selection Recommendations

Both the LTMM-106-02-L-D-SM and STMM-106-02-L-D-SM maintain Active product status from Samtec Inc., ensuring continued availability and manufacturing support. Both parts are ROHS3 compliant and carry MSL 1 rating, meeting standard environmental and handling requirements for industrial applications.

Selection between these parts depends on application-specific requirements:

LTMM-106-02-L-D-SM is specified for board-to-board interconnection applications where two PCBs require direct mating connectivity.

STMM-106-02-L-D-SM is specified for board-to-cable/wire applications and provides an extended operating temperature range (-55°C ~ 125°C) compared to the LTMM series (-55°C ~ 105°C), along with a defined current rating of 3A.

Component selection should be based on the intended connection topology (board-to-board versus board-to-cable/wire) and thermal operating requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can STMM-106-02-L-D-SM be used as a direct replacement for LTMM-106-02-L-D-SM in board-to-board applications?

A: The STMM-106-02-L-D-SM is specified for board-to-cable/wire applications, while the LTMM-106-02-L-D-SM is specified for board-to-board applications. Although electrical and mechanical parameters are equivalent, the intended connection style differs. Application requirements should determine the appropriate selection.

Q: What is the significance of the operating temperature difference between these parts?

A: The LTMM-106-02-L-D-SM operates from -55°C to 105°C, while the STMM-106-02-L-D-SM operates from -55°C to 125°C. Applications requiring operation above 105°C must use the STMM variant. For applications within the -55°C to 105°C range, both parts are suitable.

Q: Are both parts compatible with the same PCB footprint?

A: Both parts share identical pitch spacing (0.079" / 2.00mm), row spacing (0.079" / 2.00mm), and surface mount termination. PCB footprints designed for one part are mechanically compatible with the other, provided the intended connection style (board-to-board versus board-to-cable/wire) aligns with application requirements.

Q: What does MSL 1 rating mean for these connectors?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. These parts do not require special storage conditions or baking procedures prior to assembly.

Q: Are both parts RoHS compliant?

A: Yes, both the LTMM-106-02-L-D-SM and STMM-106-02-L-D-SM are ROHS3 compliant, meeting current environmental and hazardous substance restrictions.