LTMM-113-02-F-D-SM Equivalent & Substitute Parts

Part Overview

The LTMM-113-02-F-D-SM is a surface mount rectangular connector header manufactured by Samtec Inc. in the Flex Stack, LTMM series. This 26-position, 2-row board-to-board connector features 0.079" (2.00mm) pitch mating and is designed for applications requiring shrouded, push-pull fastening with solder termination. The part is currently active in production with full inventory availability. Equivalent and substitute parts are identified to support procurement flexibility, design alternatives, and supply chain continuity.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	26
Number of Rows	2
Pitch - Mating	0.079" (2.00mm)
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Style	Board to Board
Shrouding	Shrouded - 4 Wall
Termination	Solder
Fastening Type	Push-Pull
Contact Shape	Square
Contact Finish - Mating	Gold
Contact Material	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LTMM-113-02-F-D-SM are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

Connector type: Header
Contact type: Male Pin
Number of positions: 26
Number of rows: 2
Pitch - mating: 0.079" (2.00mm)
Row spacing - mating: 0.079" (2.00mm)
Mounting type: Surface Mount
Style: Board to Board or Board to Board/Cable
Shrouding: Shrouded - 4 Wall
Termination: Solder
Contact shape: Square
Contact finish - mating: Gold
Insulation material: LCP or Thermoplastic
Moisture sensitivity level: 1 (Unlimited)

The substitute part 98424-G52-26LF (Amphenol ICC/FCI Minitek® 2.00mm series) meets all core substitution parameters. Variations in fastening type (Latch Holder vs. Push-Pull), contact length, insulation height, and contact finish thickness do not preclude substitution when mechanical and electrical compatibility requirements are satisfied.

Parameter Comparison

Parameter	LTMM-113-02-F-D-SM (Samtec)	98424-G52-26LF (Amphenol ICC/FCI)
Manufacturer	Samtec Inc.	Amphenol ICC (FCI)
Series	Flex Stack, LTMM	Minitek® 2.00mm
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	26	26
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 Board or Cable
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder
Fastening Type	Push-Pull	Latch Holder
Contact Length - Mating	0.120" (3.05mm)	0.157" (4.00mm)
Insulation Height	0.190" (4.83mm)	0.244" (6.20mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold, GXT™
Contact Finish Thickness - Mating	3.00µin (0.076µm)	30.0µin (0.76µm)
Contact Material	Phosphor Bronze	Copper Alloy
Insulation Material	Liquid Crystal Polymer (LCP)	Thermoplastic
Operating Temperature	-55°C ~ 125°C	Not specified
RoHS Status	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Current Rating	Not specified	2A (AC/DC)
Voltage Rating	Not specified	200V (AC/DC)
Product Status	Active	Active

Engineering Selection Recommendations

Both the LTMM-113-02-F-D-SM and 98424-G52-26LF are active production parts with full RoHS compliance and MSL 1 rating. Selection between these parts is based on the following factors:

LTMM-113-02-F-D-SM (Samtec): Use when push-pull fastening is required, when operating temperature range of -55°C to 125°C is specified, or when LCP insulation material is a design requirement. This part is available in tube packaging.

98424-G52-26LF (Amphenol ICC/FCI): Use when latch holder fastening is acceptable, when board-to-board or cable connectivity is required, or when higher contact finish thickness (30.0µin) is preferred for enhanced durability. This part is available in bulk packaging and provides specified current (2A) and voltage (200V) ratings.

Both parts satisfy core rectangular connector header specifications for 26-position, 2-row, 2.00mm pitch surface mount applications with shrouded 4-wall construction and solder termination.

Frequently Asked Questions (FAQ)

Q: Can 98424-G52-26LF be used as a direct replacement for LTMM-113-02-F-D-SM?

A: Yes, for applications where fastening type (latch holder vs. push-pull) and insulation material (thermoplastic vs. LCP) are not design-critical constraints. Both parts share identical pitch, position count, row configuration, mounting type, and shrouding specifications.

Q: What is the difference in fastening mechanism between these parts?

A: LTMM-113-02-F-D-SM uses push-pull fastening, while 98424-G52-26LF uses latch holder fastening. These are distinct mechanical engagement methods and may require different mating connector designs.

Q: Are there differences in contact mating length?

A: Yes. LTMM-113-02-F-D-SM has a contact mating length of 0.120" (3.05mm), while 98424-G52-26LF has 0.157" (4.00mm). This affects insulation height and overall connector profile. Verify mechanical clearance in your application.

Q: Do both parts meet RoHS requirements?

A: Yes. LTMM-113-02-F-D-SM is ROHS3 Compliant, and 98424-G52-26LF is RoHS Compliant. Both are suitable for RoHS-regulated applications.

Q: What is the packaging difference?

A: LTMM-113-02-F-D-SM is supplied in tube packaging, while 98424-G52-26LF is supplied in bulk packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: Are operating temperature ranges specified for both parts?

A: LTMM-113-02-F-D-SM specifies -55°C to 125°C. Operating temperature for 98424-G52-26LF is not provided in available specifications. Consult manufacturer datasheets if temperature range is a critical design parameter.

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