LTMM-107-02-SM-D-SM Equivalent & Substitute Parts

Part Overview

The LTMM-107-02-SM-D-SM is a rectangular connector header manufactured by Samtec Inc., designed for surface mount board-to-board applications. This shrouded 14-position connector operates across -55°C to 105°C and features a 2.00mm pitch with push-pull fastening. The part is currently active and in stock with 810 units available. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility while maintaining circuit performance.

Key Parameters

Parameter	Value
Manufacturer Part Number	LTMM-107-02-SM-D-SM
Manufacturer	Samtec Inc.
Category	Rectangular Connectors
Series	Flex Stack, LTMM
Connector Type	Header
Number of Positions	14
Pitch - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Style	Board to Board
Operating Temperature	-55°C ~ 105°C
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the LTMM-107-02-SM-D-SM is determined by the following critical parameters:

Pitch - Mating: 0.079" (2.00mm)
Number of Positions: 14
Number of Rows: 2
Mounting Type: Surface Mount
Connector Type: Header
Contact Type: Male Pin
Shrouding: Shrouded - 4 Wall
Termination: Solder
Fastening Type: Push-Pull
Contact Finish - Mating: Gold
Insulation Material: Liquid Crystal Polymer (LCP)
RoHS Status: ROHS3 Compliant

The substitute part STMM-107-02-S-D-SM maintains all critical electrical and mechanical parameters. The primary difference is the connector style (Board to Cable/Wire versus Board to Board) and extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). Both parts share identical pitch, position count, mounting method, contact configuration, and material specifications.

Parameter Comparison

Parameter	LTMM-107-02-SM-D-SM	STMM-107-02-S-D-SM
Manufacturer	Samtec Inc.	Samtec Inc.
Category	Rectangular Connectors	Rectangular Connectors
Series	Flex Stack, LTMM	Flex Stack, STMM
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	14	14
Number of Rows	2	2
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount
Style	Board to Board	Board to Cable/Wire
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Length - Mating	0.120" (3.05mm)	0.120" (3.05mm)
Insulation Height	0.190" (4.83mm)	0.190" (4.83mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Finish - Post	Tin	Tin
Contact Material	Phosphor Bronze	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Features	Keying Slot	Keying Slot
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C
Insulation Color	Black	Black
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

Both the LTMM-107-02-SM-D-SM and STMM-107-02-S-D-SM are active products with ROHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts depends on application-specific requirements:

The LTMM-107-02-SM-D-SM is specified for board-to-board interconnection with an operating temperature range of -55°C to 105°C. This configuration is suitable for applications requiring direct PCB-to-PCB mating.

The STMM-107-02-S-D-SM is specified for board-to-cable/wire interconnection with an extended operating temperature range of -55°C to 125°C and a current rating of 3A. This configuration accommodates applications requiring cable harness integration or elevated thermal environments.

Both parts maintain identical electrical and mechanical specifications for pitch, position count, contact configuration, and material composition. The choice between them is determined by the interconnection topology (board-to-board versus board-to-cable) and thermal operating requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can STMM-107-02-S-D-SM replace LTMM-107-02-SM-D-SM in a board-to-board application?

A: The STMM-107-02-S-D-SM is designed for board-to-cable/wire applications, while the LTMM-107-02-SM-D-SM is designed for board-to-board applications. Although the electrical and mechanical parameters are compatible, the connector style differs. Substitution requires verification that the board-to-cable configuration is acceptable for the target application topology.

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

A: The LTMM-107-02-SM-D-SM operates from -55°C to 105°C, while the STMM-107-02-S-D-SM operates from -55°C to 125°C. The extended upper temperature limit of the STMM variant accommodates applications with higher thermal requirements. If the application operates within the -55°C to 105°C range, both parts are functionally equivalent for temperature performance.

Q: Are the pitch and position specifications identical between these parts?

A: Yes. Both parts feature a 0.079" (2.00mm) mating pitch, 14 positions arranged in 2 rows with 0.079" (2.00mm) row spacing. The contact configuration, shrouding, and fastening mechanisms are identical.

Q: What is the current rating for each part?

A: The LTMM-107-02-SM-D-SM does not specify a current rating in the provided data. The STMM-107-02-S-D-SM is rated for 3A. If current capacity is a critical design parameter, the STMM variant provides explicit current specification.

Q: Are both parts RoHS compliant?

A: Yes. Both the LTMM-107-02-SM-D-SM and STMM-107-02-S-D-SM are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

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