3M 159108-2012 Equivalent & Substitute Parts

Part Overview

The 3M 159108-2012 is a surface mount rectangular connector header with 8 positions at 2.00mm pitch, featuring shrouded 4-wall design and push-pull fastening. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The connector is designed for board-to-cable/wire connections with solder termination and operates across the industrial temperature range of -55°C to 105°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	159108-2012
Manufacturer	3M
Connector Type	Header
Contact Type	Male Pin
Number of Positions	8
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
Fastening Type	Push-Pull
Termination	Solder
Contact Finish - Mating	Gold
Contact Material	Copper Alloy
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled
Operating Temperature	-55°C ~ 105°C
Current Rating	1.25A
Voltage Rating	150V
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 3M 159108-2012 is determined by the following critical parameters:

Pitch and Position Configuration: 0.079" (2.00mm) pitch with 8 positions in 2-row arrangement
Mounting and Termination: Surface mount with solder termination
Connector Geometry: Shrouded 4-wall design with male pin contacts
Electrical Ratings: Minimum 1.25A current and 150V voltage capability
Environmental Compliance: RoHS3 compliance and MSL 1 rating

Substitute parts are grouped into two categories based on fastening mechanism compatibility:

Category A - Push-Pull Fastening (Direct Mechanical Compatibility) Samtec LTMM-104 series parts maintain identical push-pull fastening, enabling direct mechanical interchange in applications where the original fastening type is specified.

Category B - Latch Holder Fastening (Functional Compatibility) Amphenol ICC 98424 series parts provide functional electrical equivalence with alternative latch holder fastening, suitable for applications where fastening mechanism flexibility exists.

Parameter Comparison

Parameter	3M 159108-2012	Amphenol 98424-F52-08LF	Amphenol 98424-G52-08LF	Samtec LTMM-104-01-G-D-SM	Samtec LTMM-104-01-S-D-SM	Samtec LTMM-104-02-F-D-SM
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Positions	8	8	8	8	8	8
Number of Rows	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Latch Holder	Latch Holder	Push-Pull	Push-Pull	Push-Pull
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Finish - Mating	Gold	Gold	Gold, GXT™	Gold	Gold	Gold
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	LCP, Glass Filled	Thermoplastic	Thermoplastic	LCP	LCP	LCP
Operating Temperature	-55°C ~ 105°C	Not specified	Not specified	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 125°C
Current Rating	1.25A	2A (AC/DC)	2A (AC/DC)	Not specified	Not specified	Not specified
Voltage Rating	150V	200V (AC/DC)	200V (AC/DC)	Not specified	Not specified	Not specified
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Mechanical Replacement (Push-Pull Fastening)

The Samtec LTMM-104 series provides the closest mechanical and electrical equivalence to the 3M 159108-2012. All variants maintain push-pull fastening, surface mount configuration, and 2.00mm pitch geometry. LTMM-104-01-S-D-SM and LTMM-104-01-S-D-SM-LC are recommended for applications requiring the original operating temperature range (-55°C to 105°C) and are ROHS3 compliant. LTMM-104-02-F-D-SM extends the operating range to 125°C and includes keying slot features.

For Functional Equivalence (Alternative Fastening)

Amphenol ICC 98424-F52-08LF and 98424-G52-08LF provide electrical and dimensional compatibility with enhanced current (2A) and voltage (200V) ratings. These parts employ latch holder fastening instead of push-pull, requiring connector interface redesign. Both are RoHS compliant and suitable for applications where fastening mechanism flexibility exists.

Compliance Considerations

All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity rating, matching the original component. Samtec LTMM-104 variants are ROHS3 compliant, directly matching the original specification. Amphenol ICC parts are RoHS compliant with REACH Affected status, requiring verification against specific supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can Samtec LTMM-104 parts directly replace the 3M 159108-2012 without PCB redesign?

A: Samtec LTMM-104 series maintains identical pitch (2.00mm), position count (8), row configuration (2), and push-pull fastening. Direct PCB footprint compatibility exists for LTMM-104-01 variants. LTMM-104-02 variants have different contact length specifications (0.120" vs. 0.142") and may require footprint verification.

Q: What is the primary difference between Amphenol 98424-F52-08LF and 98424-G52-08LF?

A: Both parts are electrically and mechanically identical. The primary difference is contact finish: 98424-F52-08LF uses flash gold plating on mating contacts, while 98424-G52-08LF uses GXT™ gold plating with 30.0µin thickness specification. Selection depends on contact durability and mating cycle requirements.

Q: Are Samtec LTMM-104 parts suitable for applications requiring the original 1.25A current rating?

A: Samtec LTMM-104 series does not specify current or voltage ratings in the provided data. For applications with defined electrical load requirements, Amphenol ICC 98424 series with specified 2A current and 200V voltage ratings provides documented electrical performance.

Q: What is the significance of the Board Lock feature in LTMM-104-01-G-D-SM-LC and LTMM-104-01-S-D-SM-LC?

A: Board Lock is a mechanical feature that provides additional retention during mating. This feature is present in -LC variants but absent in standard variants. Selection depends on application requirements for connector retention force and vibration resistance.

Q: Can Amphenol 98424 series parts be used as direct mechanical replacements?

A: Amphenol 98424 series uses latch holder fastening instead of push-pull, requiring mating connector interface redesign. Electrical and dimensional compatibility exists, but mechanical interface is not directly interchangeable without connector redesign.

Q: Are all substitute parts ROHS3 compliant?

A: Samtec LTMM-104 series is ROHS3 compliant. Amphenol ICC 98424 series is RoHS compliant but not specifically ROHS3 certified. For applications requiring ROHS3 compliance, Samtec variants are the appropriate selection.

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