3M 951124-4620-AR-TP Equivalent & Substitute Parts

Part Overview

The 3M 951124-4620-AR-TP is a rectangular connector header for surface mount, right-angle applications with 24 positions at 2.00mm pitch. This component is classified as obsolete, making equivalent substitute parts necessary for new designs, production continuity, and long-term supply chain reliability. Active alternatives from Samtec Inc. provide direct functional equivalence while offering extended product lifecycle support and improved availability.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.079" (2.00mm)
Number of Positions	24
Number of Rows	1
Mounting Type	Surface Mount, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Insulation Height	0.079" (2.00mm)
Contact Shape	Square
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Current Rating	1A
Operating Temperature	-25°C ~ 105°C
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 3M 951124-4620-AR-TP is based on the following critical parameters that must remain constant:

Pitch - Mating: 0.079" (2.00mm)
Number of Positions: 24
Number of Rows: 1
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Surface Mount, Right Angle
Termination: Solder
Fastening Type: Push-Pull
Insulation Height: 0.079" (2.00mm)
Contact Shape: Square
Contact Finish - Mating: Gold
Contact Finish - Post: Tin
Material Flammability Rating: UL94 V-0
Insulation Color: Black
Moisture Sensitivity Level: 1 (Unlimited)

All Samtec MMT-124 series variants meet these core substitution criteria. Variations among substitute parts relate to contact length, contact material composition, insulation material, current rating, operating temperature range, packaging format, and surface finish thickness—parameters that do not affect basic form, fit, and function compatibility.

Parameter Comparison

Parameter	3M 951124-4620-AR-TP	MMT-124-01-F-SH-P	MMT-124-01-L-SH	MMT-124-01-S-SH-A	MMT-124-01-S-SH-A-K-TR	MMT-124-01-S-SH-A-P-TR	MMT-124-01-S-SH-P
Manufacturer	3M	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
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)	0.079" (2.00mm)
Number of Positions	24	24	24	24	24	24	24
Number of Rows	1	1	1	1	1	1	1
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle	Surface Mount, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Insulation Height	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish - Post	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Black	Black	Black	Black
Operating Temperature	-25°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1A	3A	3A	3A	3A	3A	3A
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All Samtec MMT-124 series variants are active products with ROHS3 compliance, providing superior lifecycle support compared to the obsolete 3M 951124-4620-AR-TP. Selection among substitute options depends on packaging and application requirements:

MMT-124-01-F-SH-P: Standard packaging option with Pick and Place capability. Suitable for automated assembly environments requiring standard reel formats.

MMT-124-01-L-SH: Tube packaging. Appropriate for lower-volume applications or manual assembly processes.

MMT-124-01-S-SH-A: Standard variant with Board Guide feature. Recommended for applications requiring mechanical alignment assistance during assembly.

MMT-124-01-S-SH-A-K-TR: Tape & Reel packaging with Board Guide and Pick and Place features. Optimal for high-volume automated production requiring maximum assembly efficiency.

MMT-124-01-S-SH-A-P-TR: Tape & Reel packaging with Board Guide and Pick and Place features. Functionally equivalent to MMT-124-01-S-SH-A-K-TR with alternative packaging designation.

MMT-124-01-S-SH-P: Pick and Place capable variant without Board Guide. Suitable for automated assembly where board guidance is not required.

All substitute parts exceed the original part's current rating (3A vs. 1A) and operating temperature range (-55°C to 125°C vs. -25°C to 105°C), providing enhanced performance margins for demanding applications.

Frequently Asked Questions (FAQ)

Q: Are all Samtec MMT-124 variants electrically and mechanically compatible with the 3M 951124-4620-AR-TP?

A: Yes. All listed Samtec variants maintain identical pitch, position count, row configuration, contact geometry, and termination method. They are direct form, fit, and function replacements.

Q: What is the primary difference between the substitute parts?

A: Differences relate to packaging format (Tube, standard reel, or Tape & Reel), presence of Board Guide feature, and Pick and Place capability. Core electrical and mechanical specifications remain constant across all variants.

Q: Why do the Samtec parts have higher current ratings (3A vs. 1A)?

A: The Samtec MMT-124 series uses phosphor bronze contact material and improved contact geometry, enabling higher current capacity. This provides additional design margin without affecting compatibility.

Q: Are the Samtec parts RoHS compliant?

A: Yes. All Samtec MMT-124 variants are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: Which variant should I select for high-volume production?

A: MMT-124-01-S-SH-A-K-TR or MMT-124-01-S-SH-A-P-TR are recommended for high-volume automated assembly due to Tape & Reel packaging and Pick and Place compatibility.

Q: Can I use these parts interchangeably on the same PCB?

A: Yes. All variants share identical footprints and mating interfaces. PCB layout and connector cavity designs require no modification.

Q: What is the Board Guide feature?

A: The Board Guide feature provides mechanical alignment assistance during connector mating, improving assembly reliability in applications requiring precise positioning.

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