3M 3372-1203 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3372-1203 is an active rectangular connector header designed for through-hole, right-angle board-to-board or cable applications. This 60-position, 2-row connector operates across -55°C to 105°C and provides 1.75A current capacity per contact. The part is currently in active production status. Substitute parts may be required due to inventory availability, packaging preferences, or specific application requirements such as shrouding configuration or fastening mechanism differences.

Substiute Parts

3372-1203

3MIn Stock: 12293372-1203 Datasheet

Current PartRFQ

N3372-5002RB

3MIn Stock: 1300N3372-5002RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3M 3372-1203 is determined by the following critical parameters that must remain constant:

• 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
• Operating temperature range: -55°C ~ 105°C
• Current rating: 1.75A
• Material flammability rating: UL94 V-0

The substitute part N3372-5002RB meets all critical substitution criteria. Variations in shrouding configuration (3 Wall vs. 4 Wall), fastening mechanism (Latch Lock/Eject Hooks, Short vs. Push-Pull), contact post length, insulation height, and RoHS compliance status do not prevent functional substitution when application requirements permit these differences.

Parameter Comparison

Engineering Selection Recommendations

Both the 3M 3372-1203 and N3372-5002RB are active products within the 3M 3000 series rectangular connector family. Selection between these parts should be based on specific application requirements:

The 3372-1203 features 3-wall shrouding with latch lock/eject hook fastening and tin-lead post finish. This configuration is suitable for applications where the original design specification requires these mechanical characteristics.

The N3372-5002RB provides 4-wall shrouding with push-pull fastening and tin post finish, with RoHS compliance. This variant is appropriate for applications requiring enhanced shrouding protection, push-pull engagement, or RoHS-compliant component sourcing. The increased insulation height (0.340" vs. 0.310") and reduced contact post length (0.112" vs. 0.155") must be evaluated against PCB layout and mating connector specifications.

Both parts maintain identical electrical performance: 1.75A current rating, -55°C to 105°C operating range, UL94 V-0 flammability rating, and 0.100" (2.54mm) pitch configuration. Both are MSL 1 (unlimited moisture sensitivity) and REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can N3372-5002RB directly replace 3372-1203 in existing designs?

A: Functional substitution is possible if the application tolerates differences in shrouding style (4-wall vs. 3-wall), fastening mechanism (push-pull vs. latch lock/eject hooks), and contact post geometry. PCB layout and mating connector compatibility must be verified, particularly regarding the 0.028" (0.71mm) difference in contact post length and 0.030" (0.76mm) difference in insulation height.

Q: What is the significance of the shrouding difference?

A: The 3372-1203 uses 3-wall shrouding, while N3372-5002RB uses 4-wall shrouding. Four-wall shrouding provides additional mechanical protection and guidance during mating. This difference affects connector footprint and may impact PCB design clearances.

Q: Does the fastening mechanism difference affect electrical performance?

A: No. Both latch lock/eject hooks (3372-1203) and push-pull fastening (N3372-5002RB) provide equivalent electrical continuity and current-carrying capacity. The difference is mechanical engagement only and affects user interface during mating and unmating operations.

Q: Is RoHS compliance a critical factor for substitution?

A: RoHS compliance status depends on application requirements. The 3372-1203 is RoHS non-compliant, while N3372-5002RB is RoHS compliant. Applications subject to RoHS regulations must use the compliant variant. The primary difference is tin-lead post finish (3372-1203) versus tin post finish (N3372-5002RB).

Q: Are the electrical specifications identical between these parts?

A: Yes. Both parts share identical current rating (1.75A), operating temperature range (-55°C to 105°C), contact pitch (0.100"/2.54mm), mating contact length (0.240"/6.10mm), contact material (copper alloy), mating contact finish (gold, 30.0µin), and flammability rating (UL94 V-0).

Q: What packaging options are available?

A: The 3372-1203 is available in standard packaging, while N3372-5002RB is supplied in bulk packaging. Packaging selection may affect order quantities and handling procedures but does not impact electrical or mechanical performance.