3M 961121-6700-AR-TP Equivalent & Substitute Parts

Part Overview

The 3M 961121-6700-AR-TP is a rectangular connector header designed for surface mount applications with 21 positions at 0.100" (2.54mm) pitch. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The connector features male pins, unshrouded design, and gold-plated mating contacts suitable for board-to-board applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	961121-6700-AR-TP
Manufacturer	3M
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	21
Pitch - Mating	0.100" (2.54mm)
Number of Rows	1
Mounting Type	Surface Mount
Termination	Solder
Contact Finish - Mating	Gold
Insulation Material	Thermoplastic
Operating Temperature	-25°C ~ 105°C
Current Rating	2A
Material Flammability Rating	UL94 V-0
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 3M 961121-6700-AR-TP are qualified based on the following critical parameters:

Connector Type & Contact Configuration: Header with male pins
Position Count & Pitch: 21 positions at 0.100" (2.54mm) mating pitch
Mounting Technology: Surface mount solder termination
Electrical Performance: Gold-plated mating contacts with tin-plated posts
Environmental Compliance: UL94 V-0 flammability rating and MSL 1 moisture sensitivity
Mechanical Compatibility: Board-to-board or cable-compatible styles with push-pull fastening

All substitute parts maintain these core parameters while offering active product status and enhanced specifications in certain areas.

Parameter Comparison

Parameter	3M 961121-6700-AR-TP	Sullins GBC21SFBN-M30	Samtec TSM-121-02-L-SV	Samtec TSM-121-02-L-SV-001	Samtec TSM-121-02-S-SV-A
Manufacturer	3M	Sullins Connector Solutions	Samtec Inc.	Samtec Inc.	Samtec Inc.
Product Status	Obsolete	Active	Active	Active	Active
Connector Type	Header	Header, Breakaway	Header, Cuttable	Header, Cuttable	Header, Cuttable
Number of Positions	21	21	21	21	21
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Rows	1	1	1	1	1
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold
Contact Material	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic	Polyamide (PA9T), Nylon 9T	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Operating Temperature	-25°C ~ 105°C	-65°C ~ 150°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	2A	3A	—	—	—
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Number of Positions Loaded	All	All	All	20	All
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Sullins GBC21SFBN-M30 is the primary substitute for applications requiring active product status with extended operating temperature range (-65°C ~ 150°C) and higher current rating (3A). This part offers breakaway connector capability and polyamide insulation material, providing enhanced thermal performance over the original 3M component.

Samtec TSM-121-02-L-SV and TSM-121-02-S-SV-A are active alternatives featuring cuttable connector design with liquid crystal polymer insulation. These parts support operating temperatures to -55°C ~ 125°C and are ROHS3 compliant. The TSM-121-02-S-SV-A variant includes board guide features for improved mechanical alignment.

Samtec TSM-121-02-L-SV-001 is functionally equivalent to TSM-121-02-L-SV with the exception of 20 positions loaded instead of all 21 positions, making it suitable only for applications requiring exactly 20 active contacts.

All substitute parts maintain UL94 V-0 flammability compliance, MSL 1 moisture sensitivity, and gold-plated mating contacts with tin-plated posts. Selection should be based on specific application requirements for operating temperature range, current capacity, and connector style (breakaway versus cuttable).

Frequently Asked Questions (FAQ)

Q: Can the Sullins GBC21SFBN-M30 directly replace the 3M 961121-6700-AR-TP?

A: Yes. Both connectors share identical 21-position, 0.100" pitch configuration with surface mount solder termination, male pins, and gold-plated mating contacts. The Sullins part offers superior specifications including extended temperature range and higher current rating.

Q: What is the difference between the Samtec TSM-121-02-L-SV and TSM-121-02-L-SV-001?

A: The primary difference is the number of positions loaded. TSM-121-02-L-SV has all 21 positions loaded, while TSM-121-02-L-SV-001 has only 20 positions loaded. Select based on your application's contact requirements.

Q: Are all substitute parts ROHS3 compliant?

A: The Sullins GBC21SFBN-M30 and all Samtec variants (TSM-121 series) are ROHS3 compliant. The original 3M part does not specify RoHS status.

Q: What is the difference between breakaway and cuttable connector styles?

A: Breakaway connectors (Sullins GBC21SFBN-M30) feature individual pin separation capability. Cuttable connectors (Samtec TSM series) allow the connector strip to be cut to reduce the number of positions while maintaining structural integrity.

Q: Do all substitute parts support the same current rating as the original 3M connector?

A: The Sullins GBC21SFBN-M30 supports 3A, exceeding the original 2A rating. Samtec TSM series parts do not specify current rating in the provided data.

Q: What insulation materials are used in the substitute parts?

A: Sullins GBC21SFBN-M30 uses polyamide (PA9T) nylon 9T insulation. Samtec TSM series uses liquid crystal polymer (LCP) insulation, both offering improved thermal performance compared to the original thermoplastic material.

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