3M 2320-6121-TP Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 2320-6121-TP is a through-hole rectangular connector header with 20 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This unshrouded, male pin header is designed for board-to-board or cable connections with solder termination and push-pull fastening. The connector operates across -55°C to 105°C with a 3A current rating per contact and features tin-lead plating on both mating and post contacts. This part is active in production and widely used in general-purpose applications. Equivalent and substitute parts are identified based on matching core electrical and mechanical parameters to ensure functional compatibility in circuit board designs.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature Range	-55°C ~ 105°C
Current Rating	3A
Material Flammability Rating	UL94 V-0
Insulation Color	Black

Substitute Part Grouping Explanation

Substitute parts for the 3M 2320-6121-TP are qualified based on the following core parameters that determine functional compatibility:

Connector Type & Contact Configuration: Header with male pins, 20 positions in 2 rows
Pitch Specification: 0.100" (2.54mm) mating pitch and 0.100" (2.54mm) row spacing
Mounting & Termination: Through-hole solder termination with push-pull fastening
Electrical Performance: 3A current rating and UL94 V-0 flammability rating
Environmental Compliance: Operating temperature range and RoHS/REACH status

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents: Molex 0010897201, 0010897202, and 0879142016 maintain identical pitch, position count, and row configuration with equivalent electrical performance. These parts feature breakaway headers and alternative contact finishes (tin or gold) suitable for direct substitution in most applications.

Category B - Mechanical Variants with Extended Temperature Range: Preci-Dip 450-10-220-00-006101 and Amphenol ICC (FCI) BERGSTIK® II series (67996-120HLF, 67996-220HLF, 67996-420HLF, 67997-120HLF, 67997-220HLF, 68602-120HLF) provide equivalent pitch and position specifications with variations in contact length, material composition, and operating temperature ranges. These parts accommodate different PCB stack-up requirements and thermal environments.

Parameter Comparison

Parameter	3M 2320-6121-TP	Molex 0010897201	Molex 0010897202	Molex 0879142016	Preci-Dip 450-10-220-00-006101	Amphenol 67996-120HLF	Amphenol 67996-220HLF	Amphenol 67996-420HLF	Amphenol 67997-120HLF	Amphenol 67997-220HLF	Amphenol 68602-120HLF
Connector Type	Header	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header	Header	Header	Header	Header	Header
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	20	20	20	20	20	20	20	20	20	20	20
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
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
Contact Length - Mating	0.230" (5.84mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.230" (5.84mm)	0.141" (3.60mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.230" (5.84mm)
Contact Length - Post	0.120" (3.05mm)	0.107" (2.71mm)	0.107" (2.71mm)	0.110" (2.79mm)	0.114" (2.90mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.095" (2.41mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.150" (3.81mm)
Overall Contact Length	0.450" (11.43mm)	0.437" (11.10mm)	0.437" (11.10mm)	0.430" (10.92mm)	0.394" (10.00mm)	0.425" (10.80mm)	0.425" (10.80mm)	0.425" (10.80mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.480" (12.19mm)
Insulation Height	0.100" (2.54mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.090" (2.29mm)	0.110" (2.79mm)	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	Circular	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Tin-Lead	Tin	Gold	Tin	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic, Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Liquid Crystal Polymer (LCP), Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified
Operating Temperature	-55°C ~ 105°C	Not specified	Not specified	Not specified	-55°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 130°C	-65°C ~ 130°C	-65°C ~ 130°C
Current Rating	3A	Not specified	Not specified	Not specified	3A	3A per Contact	3A per Contact	3A per Contact	3A	3A	3A
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
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Molex C-Grid 70280 Series (0010897201, 0010897202, 0879142016) provide the closest electrical and mechanical equivalence to the 3M 2320-6121-TP. All three Molex variants are ROHS3 compliant and feature identical pitch, position count, and row spacing. The 0010897201 and 0010897202 differ only in contact finish (tin versus gold plating thickness), while 0879142016 maintains tin finish with marginally shorter overall contact length. These parts are suitable for direct substitution in applications where RoHS3 compliance is required.

Preci-Dip 450-10-220-00-006101 maintains the 3A current rating and UL94 V-0 flammability rating with extended operating temperature range (-55°C to 125°C). This part features circular contact geometry and brass contact material, differing from the square copper alloy contacts of the main part. The reduced mating contact length (0.141" versus 0.230") accommodates thinner PCB stack-ups. This part is ROHS3 compliant and suitable for applications requiring higher temperature operation.

Amphenol ICC (FCI) BERGSTIK® II Series (67996-120HLF, 67996-220HLF, 67996-420HLF, 67997-120HLF, 67997-220HLF, 68602-120HLF) offer extended operating temperature ranges (-65°C to 125°C or -65°C to 130°C) with phosphor bronze contact material and gold or tin plating options. These parts maintain the 3A current rating and UL94 V-0 rating. Contact post length varies from 0.095" to 0.150", accommodating different PCB thicknesses. All BERGSTIK® II variants are RoHS compliant. The 67997 and 68602 series match the main part's 0.120" and 0.150" post lengths respectively, providing optimal compatibility for existing PCB designs.

Selection between substitute parts depends on specific application requirements: RoHS3 compliance preference, operating temperature range, PCB stack-up thickness, and contact finish requirements (tin for cost optimization or gold for enhanced corrosion resistance).

Frequently Asked Questions (FAQ)

Q: Can Molex 0010897201 directly replace the 3M 2320-6121-TP in existing designs?

A: Yes. Both parts share identical pitch (0.100"), position count (20), row configuration (2 rows), and current rating (3A). The Molex part features tin contact finish and marginally longer mating contact length (0.240" versus 0.230"), which does not affect mechanical compatibility. The primary difference is RoHS3 compliance status; the Molex part is compliant while the 3M part is not.

Q: What is the significance of contact post length variation among substitute parts?

A: Contact post length determines the depth of solder engagement into the PCB. The 3M 2320-6121-TP specifies 0.120" post length. Amphenol 67996 series parts feature 0.095" post length, suitable for thinner PCBs, while 67997 series maintains 0.120" matching the original, and 68602 series provides 0.150" for thicker stack-ups. Post length selection must align with PCB thickness to ensure adequate solder joint formation and mechanical stability.

Q: Are gold-plated contact finishes interchangeable with tin-plated finishes?

A: Gold plating provides enhanced corrosion resistance and lower contact resistance, particularly beneficial in high-humidity or corrosive environments. Tin plating offers cost optimization for general-purpose applications. Both finishes are electrically and mechanically compatible within the same connector family. Selection depends on environmental exposure and cost constraints rather than functional compatibility.

Q: Does the Preci-Dip 450-10-220-00-006101 circular contact geometry affect compatibility?

A: Circular contacts differ mechanically from square contacts but maintain electrical equivalence. The circular geometry may affect mating force characteristics and contact pressure distribution. This part is suitable for applications where the mating connector accommodates circular contact geometry. Verify mating connector specifications before substitution.

Q: What is the impact of operating temperature range differences?

A: The 3M 2320-6121-TP operates from -55°C to 105°C. Substitute parts with extended ranges (-55°C to 125°C or -65°C to 130°C) provide thermal margin for applications approaching the original specification limits. Extended temperature range does not affect performance within the original operating window and represents a design upgrade for thermally demanding environments.

Q: Are all substitute parts available in equivalent packaging quantities?

A: Packaging varies by manufacturer and part number. The 3M part is supplied in bulk, while Molex parts are available in bulk or tray packaging, and Amphenol BERGSTIK® II parts are supplied in bag packaging. Packaging selection affects handling, storage, and assembly process integration. Verify packaging compatibility with procurement and assembly workflows.

Q: Can substitute parts with different insulation materials be used interchangeably?

A: The 3M part uses thermoplastic glass-filled insulation, while Molex parts use liquid crystal polymer (LCP) and Preci-Dip uses polycyclohexylenedimethylene terephthalate (PCT). All materials meet UL94 V-0 flammability requirements. Material differences do not affect electrical or mechanical compatibility but may influence dimensional stability and long-term reliability in extreme thermal or humidity conditions. All materials are suitable for general-purpose applications.

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