3M 961248-6700-AR-TP Equivalent & Substitute Parts

Part Overview

The 3M 961248-6700-AR-TP is a rectangular connector header designed for surface mount applications with 48 positions at 0.100" (2.54mm) pitch. This component features male pins, unshrouded design, and board-to-board connectivity in a 2-row configuration. The part is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. Samtec Inc. TSM series connectors provide direct functional equivalents with active product status and enhanced operating temperature ranges.

Key Parameters

Parameter	3M 961248-6700-AR-TP
Connector Type	Header
Contact Type	Male Pin
Number of Positions	48
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Insulation Material	Thermoplastic
Operating Temperature	-25°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	2A
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Samtec TSM-124 series connectors serve as direct substitutes for the 3M 961248-6700-AR-TP based on the following critical parameters:

Core Compatibility Parameters:

48-position, 2-row configuration at 0.100" (2.54mm) pitch
Surface mount solder termination
Male pin contact type with push-pull fastening
Board-to-board or cable connectivity style
Unshrouded design with square contact shape
UL94 V-0 flammability rating
MSL 1 (Unlimited) moisture sensitivity

Differentiation Parameters: The TSM series variants differ in contact finish specifications, insulation material composition (LCP vs. thermoplastic), operating temperature range, and optional features (board guide, pick-and-place compatibility, board lock). These variations allow selection based on specific application requirements while maintaining core electrical and mechanical compatibility.

Parameter Comparison

Parameter	3M 961248-6700-AR-TP	TSM-124-02-F-DV	TSM-124-02-F-DV-A	TSM-124-02-F-DV-LC-P-TR	TSM-124-02-FM-DV	TSM-124-02-G-DV	TSM-124-02-G-DV-A	TSM-124-02-H-DV	TSM-124-02-L-DV-A-P	TSM-124-02-L-DV-A-P-TR	TSM-124-02-L-DV-P
Connector Type	Header	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable	Header, Cuttable
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	48	48	48	48	48	48	48	48	48	48	48
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Length - Mating	0.260" (6.60mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)	0.320" (8.13mm)
Insulation Height	0.098" (2.50mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	Flash	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)
Contact Finish - Post	Tin	Tin	Tin	Tin	Tin	Gold	Gold	Gold	Tin	Tin	Tin
Contact Material	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
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	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	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	Black	Black	Black	Black
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All Samtec TSM-124 series variants listed provide functional equivalence to the obsolete 3M 961248-6700-AR-TP. Selection among substitute options depends on specific application requirements:

For Standard Applications: TSM-124-02-F-DV or TSM-124-02-G-DV offer baseline compatibility with active product status and ROHS3 compliance.

For Extended Temperature Range: All TSM variants operate from -55°C to 125°C, exceeding the original part's -25°C to 105°C range, providing enhanced thermal performance for demanding environments.

For Automated Assembly: TSM-124-02-L-DV-A-P-TR (Tape & Reel packaging) and TSM-124-02-L-DV-P (Pick and Place features) support high-volume manufacturing processes.

For Mechanical Retention: TSM-124-02-F-DV-LC-P-TR includes board lock and pick-and-place features for improved assembly reliability.

For Enhanced Contact Durability: TSM-124-02-H-DV provides 30.0µin (0.76µm) gold mating finish thickness, compared to flash finish on the original part, for increased contact longevity.

For Board Guidance: TSM-124-02-G-DV-A and TSM-124-02-L-DV-A-P include board guide features for improved mating alignment.

Frequently Asked Questions (FAQ)

Q: Can TSM-124 series connectors directly replace the 3M 961248-6700-AR-TP?

A: Yes. All TSM-124 variants maintain core electrical and mechanical compatibility: 48-position, 2-row configuration at 0.100" (2.54mm) pitch, surface mount solder termination, male pin contacts, and push-pull fastening. The primary design difference is the TSM series uses Liquid Crystal Polymer (LCP) insulation versus thermoplastic in the original part, with improved thermal and dimensional stability.

Q: What is the significance of the contact finish thickness variations?

A: Contact finish thickness affects contact durability and wear resistance. The original part specifies flash finish. TSM variants offer 3.00µin, 10.0µin, or 30.0µin gold thickness options. Thicker finishes provide extended mating cycle life in high-frequency connection applications.

Q: Are all TSM-124 variants ROHS3 compliant?

A: Yes. All listed Samtec TSM-124 variants are ROHS3 compliant, meeting current environmental regulations. The original 3M part does not specify RoHS status.

Q: What packaging options are available?

A: TSM-124-02-L-DV-A-P-TR is supplied in Tape & Reel (TR) format for automated pick-and-place assembly. Other variants are available in tube or bulk packaging. Packaging selection depends on production volume and assembly methodology.

Q: How do board guide and pick-and-place features affect compatibility?

A: Board guide features (present in TSM-124-02-G-DV-A and TSM-124-02-L-DV-A-P variants) improve mating alignment during assembly but do not affect electrical compatibility. Pick-and-place features support automated assembly equipment. These are optional enhancements that do not impact functional interchangeability.

Q: What is the difference between TSM-124-02-F-DV and TSM-124-02-G-DV?

A: Both maintain identical electrical and mechanical specifications. The primary difference is contact finish: TSM-124-02-F-DV uses 3.00µin (0.076µm) gold mating finish with tin post finish, while TSM-124-02-G-DV uses 10.0µin (0.25µm) gold mating finish with gold post finish. TSM-124-02-G-DV provides enhanced durability for applications requiring extended contact life.

Q: Is the increased contact length (0.320" vs. 0.260") a compatibility concern?

A: No. The longer contact length in TSM variants (0.320" vs. 0.260" in the original) provides improved mating engagement and contact pressure, enhancing reliability. This represents a design improvement compatible with standard 0.100" pitch receptacles.

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