3M 3793-1503 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3793-1503 is a through-hole, right-angle rectangular connector header with 10 positions at 2.54mm pitch. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The connector features shrouded 3-wall construction with male pins, gold-plated mating contacts, and tin-lead post finishes. Identifying compatible alternatives ensures design continuity and supply chain reliability.

Substiute Parts

3793-1503

3MIn Stock: 8973793-1503 Datasheet

Current PartRFQ

D3793-5002-AR

3MIn Stock: 808D3793-5002-AR Datasheet

MFR RecommendedRFQ

N3793-5002RB

3MIn Stock: 1314N3793-5002RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3793-1503 is determined by the following critical parameters:

• Connector type (Header) and contact type (Male Pin) must remain constant
• Position count (10) and row configuration (2 rows) must match
• Pitch specifications (0.100" / 2.54mm mating pitch and row spacing) are non-negotiable
• Mounting style (Through Hole, Right Angle) must be preserved
• Operating temperature range (-55°C ~ 105°C) must be maintained or exceeded
• Material flammability rating (UL94 V-0) must be met or exceeded

The identified substitutes meet these core electrical and mechanical requirements while offering improvements in product status (Active vs. Obsolete) and regulatory compliance (RoHS Compliant vs. Non-compliant).

Parameter Comparison

Engineering Selection Recommendations

Both D3793-5002-AR and N3793-5002RB are active, production-qualified alternatives to the obsolete 3793-1503. Selection between these substitutes should be based on the following factors:

D3793-5002-AR is recommended for applications requiring RoHS compliance with tray packaging for controlled distribution. This part features brass contact material and tin post finish, with improved current rating of 1.75A. The 4-wall shrouding provides enhanced EMI shielding compared to the original 3-wall design.

N3793-5002RB is recommended for applications where bulk packaging is acceptable and copper alloy contact material is preferred. This part maintains the same electrical performance as D3793-5002-AR with RoHS compliance and higher current capacity (1.75A). The 4-wall shrouding and increased insulation height (0.340" vs. 0.310") provide improved mechanical robustness.

Both substitutes maintain the critical mating pitch (2.54mm), row configuration (2 rows, 10 positions), operating temperature range (-55°C ~ 105°C), and flammability rating (UL94 V-0) required for direct replacement. The increased current rating (1.75A vs. 1A) and improved shrouding design represent functional enhancements over the original part.

Frequently Asked Questions (FAQ)

Q: Can D3793-5002-AR and N3793-5002RB be used interchangeably with 3793-1503?

A: Both parts meet the core substitution criteria: identical connector type, contact type, position count, row configuration, mating pitch, row spacing, mounting style, and operating temperature range. The primary differences are product status (Active vs. Obsolete), RoHS compliance, shrouding design (4-wall vs. 3-wall), and current rating (1.75A vs. 1A). Interchangeability depends on your specific application requirements and regulatory constraints.

Q: What are the mechanical differences between the substitute parts?

A: D3793-5002-AR and N3793-5002RB both feature 4-wall shrouding compared to the original 3-wall design, and both have increased insulation height (0.340" vs. 0.310"). The contact post length is shorter (0.112" vs. 0.155"), which may affect PCB layout. D3793-5002-AR uses brass contacts with tin finish, while N3793-5002RB uses copper alloy contacts with tin finish. Both maintain the same mating contact length (0.240") and gold plating on mating surfaces.

Q: Are there packaging considerations when switching to substitute parts?

A: Yes. The original 3793-1503 packaging is not specified. D3793-5002-AR is supplied in trays, suitable for automated assembly and controlled component distribution. N3793-5002RB is supplied in bulk packaging, which may require manual handling and component counting. Select based on your assembly process requirements and inventory management practices.

Q: Does the increased current rating (1.75A vs. 1A) affect compatibility?

A: No. The higher current rating of the substitute parts represents a capability improvement and does not create compatibility issues. If your original design operates at or below 1A, the substitutes will perform identically or better. The increased rating provides design margin for future applications.

Q: What is the significance of the 4-wall shrouding in the substitute parts?

A: The 4-wall shrouding in D3793-5002-AR and N3793-5002RB provides improved EMI shielding and mechanical protection compared to the 3-wall design of the original part. This enhancement does not affect electrical compatibility but may improve signal integrity in noise-sensitive applications.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both D3793-5002-AR and N3793-5002RB are RoHS Compliant, while the original 3793-1503 is RoHS Non-compliant. If your application or market requires RoHS compliance, either substitute part satisfies this requirement.