3M 3372-6603 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3372-6603 is a through-hole rectangular connector header with 60 positions arranged in 2 rows 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 shrouded 4-wall construction with solder termination and latch lock/eject hook fastening. Identifying compatible alternatives ensures design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	60
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Termination	Solder
Operating Temperature Range	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1A
Contact Finish - Mating	Gold
Contact Finish - Post	Tin-Lead

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following core parameters:

Critical Parameters (Must Match):

Connector type: Header
Contact type: Male Pin
Number of positions: 60
Number of rows: 2
Pitch - mating: 0.100" (2.54mm)
Row spacing - mating: 0.100" (2.54mm)
Mounting type: Through Hole
Shrouding: Shrouded - 4 Wall
Termination: Solder
Material flammability rating: UL94 V-0
Contact shape: Square

Allowable Variations:

Fastening type: Latch lock/eject hooks (long or standard) or push-pull mechanisms
Contact length specifications: Variations within mechanical envelope constraints
Insulation height: Minor variations acceptable if PCB footprint compatibility maintained
Contact finish - post: Tin, tin-lead, or equivalent
Insulation material: PBT, PCT, or polyamide with glass fill
Operating temperature: Equal to or exceeding -55°C to 105°C range
Current rating: Equal to or exceeding 1A
Contact finish - mating: Gold or gold-palladium
RoHS compliance: Active substitutes may differ from obsolete main part

All substitute parts listed meet these criteria and are functionally interchangeable within the specified electrical and mechanical constraints.

Parameter Comparison

Parameter	3372-6603 (Main)	N3372-6002RB	1-102321-1	1-499206-1	1-499922-1	1-5111490-1	AWH 60G-0232-T
Manufacturer	3M	3M	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	Assmann WSW
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
Number of Positions	60	60	60	60	60	60	60
Number of Rows	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)
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Latch Lock/Eject Hooks, Long	Push-Pull	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	Not specified
Contact Length - Post	0.155" (3.94mm)	0.112" (2.84mm)	0.155" (3.94mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)	0.130" (3.30mm)
Overall Contact Length	0.695" (17.65mm)	0.652" (16.56mm)	0.684" (17.37mm)	0.639" (16.23mm)	0.639" (16.23mm)	0.639" (16.23mm)	Not specified
Insulation Height	0.680" (17.27mm)	0.680" (17.27mm)	0.549" (13.94mm)	0.549" (13.94mm)	0.549" (13.94mm)	0.549" (13.94mm)	0.669" (17.00mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold or Gold-Palladium	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	15.0µin (0.38µm)	15.0µin (0.38µm)	Flash
Contact Finish - Post	Tin-Lead	Tin	Tin-Lead	Tin-Lead	Tin-Lead	Tin	Tin
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C	-40°C ~ 105°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
Insulation Color	Black	Black	Black	Black	Black	Black	Gray
Current Rating (Amps)	1A	1.75A	1A per Contact	1A	1A	1A per Contact	3A
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

N3372-6002RB (3M) is the primary substitute for the 3372-6603. Both are 3M products within the 3000 series. The N3372-6002RB is active and RoHS compliant, addressing obsolescence and regulatory requirements. The fastening mechanism differs (push-pull versus latch lock), and contact post length is shorter, requiring PCB footprint verification. Current rating is increased to 1.75A.

1-5111490-1 (TE Connectivity) provides an alternative from a major connector manufacturer. This part is RoHS compliant and active. It features latch lock/eject hook fastening matching the original design intent. Operating temperature range extends to -65°C. Contact material is specified as phosphor bronze with polyamide insulation. Insulation height is reduced to 0.549", requiring mechanical compatibility assessment.

1-102321-1 and 1-499206-1 (TE Connectivity) are functionally equivalent alternatives with latch lock/eject hook fastening. Both are active products rated for 250VAC. Insulation height is 0.549", and contact post lengths vary slightly. These parts are RoHS non-compliant, matching the original part status.

1-499922-1 (TE Connectivity) is similar to 1-499206-1 with identical mechanical and electrical specifications. Contact finish thickness on mating surface is reduced to 15.0µin.

AWH 60G-0232-T (Assmann WSW Components) offers an alternative from a European connector supplier. This part is ROHS3 compliant and active. Current rating is elevated to 3A. Operating temperature minimum is -40°C, which is warmer than the original specification. Insulation height is 0.669", and insulation color is gray rather than black.

Selection should prioritize RoHS compliance status based on end-application regulatory requirements and supply chain availability. Mechanical envelope differences, particularly insulation height and contact post length, require PCB layout verification before implementation.

Frequently Asked Questions (FAQ)

Q: Can N3372-6002RB replace 3372-6603 directly on existing PCBs?

A: N3372-6002RB matches the critical electrical and mating parameters but differs in fastening type (push-pull versus latch lock) and contact post length (0.112" versus 0.155"). PCB footprint compatibility must be verified, particularly solder pad spacing and hole depth. Insulation height is identical at 0.680".

Q: What is the primary difference between TE Connectivity substitutes (1-102321-1, 1-499206-1, 1-499922-1, 1-5111490-1)?

A: All TE Connectivity options maintain latch lock/eject hook fastening and 60-position 2.54mm pitch configuration. Key differences include insulation height (0.549" for most TE parts versus 0.680" for 3M parts), contact post length variations (0.110" to 0.155"), and RoHS compliance status. 1-5111490-1 is RoHS compliant; others are not. Contact finish thickness on mating surface varies between 30.0µin and 15.0µin.

Q: Is AWH 60G-0232-T suitable for applications requiring -55°C operation?

A: No. AWH 60G-0232-T specifies a minimum operating temperature of -40°C, which does not meet the original -55°C requirement. This part is suitable only for applications with operating temperature ranges of -40°C to 105°C or warmer.

Q: What are the RoHS compliance implications when substituting the obsolete 3372-6603?

A: The original 3372-6603 is RoHS non-compliant. Substitutes N3372-6002RB, 1-5111490-1, and AWH 60G-0232-T are RoHS or ROHS3 compliant, supporting modern regulatory requirements. TE Connectivity parts 1-102321-1, 1-499206-1, and 1-499922-1 remain RoHS non-compliant. Selection depends on end-product regulatory obligations.

Q: How do current ratings differ among substitutes?

A: The original 3372-6603 is rated at 1A. Substitutes provide equal or higher ratings: N3372-6002RB (1.75A), 1-102321-1 (1A per contact), 1-499206-1 (1A), 1-499922-1 (1A), 1-5111490-1 (1A per contact), and AWH 60G-0232-T (3A). Higher current ratings provide design margin but do not change fundamental compatibility.

Q: Are there packaging differences among the substitute parts?

A: Yes. N3372-6002RB is supplied in bulk packaging. TE Connectivity parts 1-102321-1, 1-499206-1, and 1-5111490-1 are bulk packaged. 1-499922-1 packaging is not specified. AWH 60G-0232-T is supplied in trays. Packaging affects handling, storage, and procurement logistics but not electrical or mechanical performance.

Q: What mechanical envelope considerations apply when switching from 3372-6603 to TE Connectivity alternatives?

A: TE Connectivity substitutes feature reduced insulation height (0.549" versus 0.680"), which may affect board-to-board spacing in stacked connector applications. Contact post lengths are shorter (0.110" to 0.155" versus 0.155"), potentially impacting solder joint formation and PCB hole depth requirements. Physical layout verification is mandatory before design implementation.

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