3M 3372-1003 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3372-1003 is a through-hole, right-angle rectangular connector header with 60 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 shrouded 3-wall construction, solder termination, and push-pull fastening, designed for board-to-board or cable applications in industrial and commercial electronics.

Key Parameters

Parameter	Value
Manufacturer Part Number	3372-1003
Manufacturer	3M
Category	Rectangular Connectors
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, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the 3M 3372-1003 is determined by the following critical parameters that must remain constant:

60 positions, 2 rows, 0.100" (2.54mm) pitch and row spacing
Through-hole, right-angle mounting configuration
Solder termination
Male pin contact type
Shrouded construction with keying slot and mounting flange
UL94 V-0 flammability rating
Operating temperature range -55°C ~ 105°C
Current rating 1.75A

The substitute parts are grouped into two categories:

Category 1: 3M Active Equivalent (N3372-5002RB) Direct replacement from the same manufacturer with improved shrouding (4-wall vs. 3-wall) and RoHS compliance. Fastening type remains push-pull with identical electrical and thermal specifications.

Category 2: Amphenol ICC (FCI) Quickie™ Series Alternatives (65823 variants) Cross-manufacturer substitutes with identical core specifications (60 positions, 2.54mm pitch, through-hole right-angle, solder termination). These parts feature circular contact shapes versus the original square contacts, and offer variations in fastening type (push-pull, latch lock/eject hooks) and contact post lengths. Available in both RoHS-compliant and non-compliant versions.

Parameter Comparison

Parameter	3372-1003	N3372-5002RB	65823-097	65823-103	65823-103LF	65823-105	65823-193	65823-243	65823-596
Manufacturer	3M	3M	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Series	3000	3000	Quickie™	Quickie™	Quickie™	Quickie™	Quickie™	Quickie™	Quickie™
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
Number of Positions	60	60	60	60	60	60	60	60	60
Number of Rows	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)
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)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Contact Shape	Square	Square	Circular	Circular	Circular	Circular	Circular	Circular	Circular
Contact Material	Copper Alloy	Copper Alloy	Phosphor Bronze Alloy	Phosphor Bronze Alloy	Phosphor Bronze Alloy	Phosphor Bronze Alloy	Phosphor Bronze Alloy	Phosphor Bronze Alloy	Phosphor Bronze Alloy
Contact Finish - Mating	Gold	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	50.0µin (1.27µm)
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.230" (5.84mm)	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	0.155" (3.94mm)	0.112" (2.84mm)	0.105" (2.67mm)	0.105" (2.67mm)	0.105" (2.67mm)	0.150" (3.81mm)	0.105" (2.67mm)	0.105" (2.67mm)	0.150" (3.81mm)
Insulation Height	0.310" (7.87mm)	0.340" (8.64mm)	0.305" (7.75mm)	0.305" (7.75mm)	0.305" (7.75mm)	0.305" (7.75mm)	0.305" (7.75mm)	0.305" (7.75mm)	0.305" (7.75mm)
Shrouding	Shrouded - 3 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks, Short	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified
Current Rating	1.75A	1.75A	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified
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
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS non-compliant	RoHS non-compliant	RoHS Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: N3372-5002RB (3M)

The N3372-5002RB is the preferred substitute for the obsolete 3372-1003. As an active product from the original manufacturer, it maintains identical electrical specifications (1.75A current rating, -55°C to 105°C operating range) and core mechanical configuration (60 positions, 2.54mm pitch, through-hole right-angle, solder termination). The N3372-5002RB offers improved shrouding (4-wall construction) and achieves RoHS compliance, making it suitable for new designs subject to environmental regulations. The push-pull fastening type matches the original specification.

Secondary Recommendation: 65823-103LF (Amphenol ICC/FCI)

For applications requiring RoHS compliance with cross-manufacturer flexibility, the 65823-103LF provides an active alternative. This part maintains the critical 60-position, 2.54mm pitch configuration and through-hole right-angle mounting. The latch lock/eject hook fastening differs from the original push-pull design but provides equivalent mechanical retention. The circular contact geometry and phosphor bronze alloy material differ from the original but are functionally compatible within the same connector class. RoHS compliance is achieved.

Tertiary Options: 65823-097, 65823-105, 65823-193, 65823-243, 65823-596 (Amphenol ICC/FCI)

These Quickie™ series alternatives are suitable for applications where RoHS compliance is not required or where specific fastening or contact post length variations are beneficial. Selection among these variants depends on:

Fastening type requirement (push-pull for 65823-097; latch lock/eject hooks for others)
Contact post length (0.105" for most variants; 0.150" for 65823-105 and 65823-596)
Contact finish thickness (standard 30.0µin for most; 50.0µin for 65823-596)

All Amphenol ICC/FCI alternatives maintain UL94 V-0 flammability rating and MSL 1 moisture sensitivity level.

Frequently Asked Questions (FAQ)

Q: Can the N3372-5002RB directly replace the 3372-1003 without PCB layout changes?

A: The N3372-5002RB maintains identical pitch (0.100" / 2.54mm), row spacing, and through-hole right-angle mounting configuration. However, the increased insulation height (0.340" vs. 0.310") and improved 4-wall shrouding may require clearance verification in confined spaces. Contact post length is shorter (0.112" vs. 0.155"), which may affect solder joint geometry on thick PCBs. PCB footprint compatibility should be confirmed before implementation.

Q: What is the functional difference between push-pull and latch lock/eject hook fastening?

A: Push-pull fastening (3372-1003, N3372-5002RB, 65823-097) uses friction-based retention requiring manual insertion and withdrawal force. Latch lock/eject hook fastening (65823-103, 65823-103LF, 65823-105, 65823-193, 65823-243, 65823-596) provides positive mechanical locking with eject hooks for controlled disconnection. Both provide equivalent electrical continuity and mechanical retention; selection depends on application requirements for connection/disconnection frequency and operator interface.

Q: Are the Amphenol ICC/FCI Quickie™ series parts electrically equivalent to the 3M originals?

A: The Amphenol ICC/FCI parts maintain identical connector class specifications (60 positions, 2.54mm pitch, through-hole right-angle, solder termination, UL94 V-0 rating, MSL 1). Contact material differs (phosphor bronze alloy vs. copper alloy) and contact shape differs (circular vs. square), but these variations are within the same connector category and do not affect electrical performance for standard signal and power applications at the specified 1.75A current rating.

Q: Which substitute part should be selected for new designs requiring RoHS compliance?

A: The N3372-5002RB (3M) is the primary choice for RoHS-compliant new designs, as it is an active product from the original manufacturer with identical specifications. The 65823-103LF (Amphenol ICC/FCI) is an alternative RoHS-compliant option if cross-manufacturer sourcing is acceptable. Both parts achieve RoHS compliance while maintaining the core connector specifications.

Q: What is the significance of contact post length variations among the Amphenol ICC/FCI alternatives?

A: Contact post length (0.105" vs. 0.150") affects solder joint formation and PCB hole engagement depth. Shorter posts (0.105") are suitable for standard PCB thicknesses and provide adequate solder fillet formation. Longer posts (0.150", available in 65823-105 and 65823-596) accommodate thicker PCBs or applications requiring deeper hole engagement. Selection depends on PCB thickness and solder process parameters.

Q: Can the 3372-1003 be used interchangeably with its substitutes in existing assemblies?

A: The 3372-1003 is obsolete and should not be used in new production. For existing assemblies, substitution feasibility depends on connector mating interface compatibility. The N3372-5002RB is the direct replacement. Amphenol ICC/FCI alternatives require confirmation that mating connectors are compatible with the Quickie™ series geometry and fastening type. Physical and electrical testing is recommended before production implementation.

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