3M 3372-1202 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3372-1202 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 identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The connector features shrouded 3-wall construction with male pins, solder termination, and latch lock/eject hook fastening. Locating active-status equivalents ensures access to current inventory and manufacturing support.

Substiute Parts

3372-1202

3MIn Stock: 9713372-1202 Datasheet

Current PartRFQ

N3372-5002RB

3MIn Stock: 1300N3372-5002RB Datasheet

MFR RecommendedRFQ

CWN-301-60-0021

CW IndustriesIn Stock: 763CWN-301-60-0021 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3372-1202 is determined by strict alignment with the following core parameters:

• Connector configuration: 60-position, 2-row header with 0.100" (2.54mm) pitch and row spacing
• Mounting and orientation: Through-hole, right-angle mounting
• Contact system: Male pins with gold mating finish
• Termination method: Solder termination
• Electrical performance: Current rating and operating temperature range
• Safety compliance: UL94 V-0 flammability rating

Two substitute parts meet these criteria with documented compatibility:

N3372-5002RB (3M): Direct 3M equivalent with active product status. Maintains identical pitch, position count, row configuration, and electrical ratings. Differs in shrouding design (4-wall vs. 3-wall), fastening mechanism (push-pull vs. latch lock), and RoHS compliance status.

CWN-301-60-0021 (CW Industries): Cross-manufacturer alternative with compatible core parameters. Maintains pitch, position count, row configuration, and through-hole right-angle mounting. Introduces variations in contact geometry (circular vs. square), contact material (phosphor bronze vs. copper alloy), insulation material, and current rating (1A vs. 1.75A).

Parameter Comparison

Engineering Selection Recommendations

N3372-5002RB (3M) is the primary substitute for the 3372-1202. Both components share identical electrical specifications, pitch geometry, and position configuration. The N3372-5002RB carries active product status with established manufacturing support and higher current inventory levels. This part achieves RoHS compliance, addressing regulatory requirements that the original 3372-1202 does not meet. The transition from latch lock to push-pull fastening and the increase from 3-wall to 4-wall shrouding represent design improvements in the active equivalent. Mechanical fit verification is required due to these shrouding and fastening differences.

CWN-301-60-0021 (CW Industries) serves as a secondary cross-manufacturer alternative when 3M supply is unavailable. This part maintains core pitch and position parameters with active product status. The current rating of 1A is lower than the original 1.75A specification, restricting use to applications with reduced current demands. The circular contact geometry and phosphor bronze material differ from the original square copper alloy contacts. The extended operating temperature range to 125°C provides additional thermal margin. Mechanical and electrical compatibility assessment is necessary before implementation due to multiple parameter variations.

Frequently Asked Questions (FAQ)

Q: Can N3372-5002RB directly replace 3372-1202 without PCB modification?

A: The core electrical and mating parameters are identical, enabling functional substitution. However, the increased shrouding height (0.340" vs. 0.310") and fastening mechanism change (push-pull vs. latch lock) may require PCB layout verification and connector cavity adjustment. Mechanical fit testing is recommended before production implementation.

Q: What is the impact of the current rating difference in CWN-301-60-0021?

A: The CWN-301-60-0021 is rated for 1A maximum current versus the original 1.75A. This part is suitable only for applications where per-pin current does not exceed 1A. Applications requiring the full 1.75A rating must use N3372-5002RB or the original 3372-1202.

Q: Does RoHS compliance of N3372-5002RB affect compatibility?

A: RoHS compliance indicates the absence of restricted substances (lead, cadmium, mercury, etc.) in the component. This is a material composition change, not a functional or electrical change. The N3372-5002RB is fully compatible with RoHS-compliant assembly processes and is preferred for new designs subject to RoHS regulations.

Q: Are the contact finish specifications identical across all three parts?

A: Mating contact finish is identical (gold, 30.0µin thickness) across all three parts. Post contact finish differs: the 3372-1202 and N3372-5002RB use tin-lead and tin respectively, while CWN-301-60-0021 uses nickel. These differences do not affect mating performance but may influence soldering characteristics and long-term reliability in specific environments.

Q: What is the significance of the insulation material difference in CWN-301-60-0021?

A: The 3372-1202 and N3372-5002RB use glass-filled PCT polyester, while CWN-301-60-0021 uses thermoplastic insulation. Both materials meet UL94 V-0 flammability requirements. The thermoplastic material may exhibit different mechanical properties at temperature extremes and in high-humidity environments. Application-specific environmental testing is recommended for critical applications.

Q: Can these parts be used interchangeably in existing designs?

A: N3372-5002RB is the closest functional equivalent and is recommended as the primary replacement. CWN-301-60-0021 requires design review due to current rating limitations and material differences. Mechanical fit verification and electrical performance validation are necessary before interchangeability confirmation in any application.