3M 3793-2503 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3793-2503 is a through-hole rectangular connector header with 10 positions arranged in 2 rows at 0.100" (2.54mm) pitch. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. The connector features shrouded design with latch lock/eject hooks and is suitable for board-to-board or cable interconnection in applications requiring 1A current capacity across the -55°C to 105°C operating range.

Substiute Parts

3793-2503

3MIn Stock: 10723793-2503 Datasheet

Current PartRFQ

D3793-6002-AR

3MIn Stock: 1643D3793-6002-AR Datasheet

MFR RecommendedRFQ

N3793-6002RB

3MIn Stock: 1903N3793-6002RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution validity for the 3793-2503 is determined by the following critical parameters: connector type (header), contact type (male pin), position count (10), row configuration (2 rows), mating pitch (0.100"), row spacing (0.100"), mounting method (through hole), and termination type (solder). All substitute parts must maintain these core electrical and mechanical specifications to ensure PCB layout compatibility and mating interface consistency.

The two identified substitutes—D3793-6002-AR and N3793-6002RB—both satisfy these core requirements. Differences exist in shrouding design (4-wall versus 3-wall), fastening mechanism (push-pull versus latch lock/eject hooks), contact material composition, and compliance status. These variations do not affect fundamental substitutability but represent design evolution and regulatory updates within the 3M connector family.

Parameter Comparison

Engineering Selection Recommendations

Both D3793-6002-AR and N3793-6002RB are active products suitable for replacing the obsolete 3793-2503. Selection between these two substitutes depends on regulatory and supply chain requirements.

D3793-6002-AR is ROHS3 compliant and represents the manufacturer-recommended upgrade path. This part is packaged in trays and carries the highest current rating at 1.75A. The contact material is brass with reduced gold plating thickness on the mating surface (10.0µin versus 30.0µin on the original), which remains within acceptable electrical performance parameters.

N3793-6002RB is RoHS compliant and maintains copper alloy contact material with original-specification gold plating thickness (30.0µin). This part is supplied in bulk packaging and also provides 1.75A current capacity. The REACH unaffected status indicates no restricted substance concerns.

Both substitutes feature 4-wall shrouding and push-pull fastening mechanisms, which differ from the original 3-wall shrouding and latch lock design. These mechanical differences do not affect electrical compatibility but may require connector receptacle updates if existing mated components use latch lock interfaces.

Frequently Asked Questions (FAQ)

Q: Can D3793-6002-AR and N3793-6002RB be used interchangeably with the 3793-2503?

A: Both parts maintain identical electrical and mechanical mating specifications (10 positions, 2 rows, 0.100" pitch, through-hole solder termination, square male pins with gold-plated mating surfaces). PCB footprints and mating interface dimensions are compatible. The primary differences are fastening mechanism (push-pull versus latch lock) and shrouding design (4-wall versus 3-wall), which do not affect basic substitutability.

Q: What is the significance of the current rating increase from 1A to 1.75A in the substitute parts?

A: The higher current rating in D3793-6002-AR and N3793-6002RB indicates improved contact design and material selection. This represents a design enhancement and does not create compatibility issues. Applications originally designed for 1A operation remain fully compatible.

Q: How do the packaging differences (tray versus bulk) affect part selection?

A: Packaging format (tray for D3793-6002-AR, bulk for N3793-6002RB) impacts handling, storage, and supply chain logistics but does not affect electrical or mechanical performance. Selection should be based on production volume requirements and inventory management practices.

Q: What are the compliance implications of choosing between ROHS3 and RoHS compliant options?

A: ROHS3 compliance (D3793-6002-AR) represents the most current regulatory standard and is recommended for new designs and long-term production continuity. RoHS compliance (N3793-6002RB) satisfies existing regulatory requirements. Selection depends on target market regulations and product lifecycle planning.

Q: Are there mating connector compatibility concerns with the fastening mechanism change?

A: The original 3793-2503 uses latch lock/eject hooks, while both substitutes use push-pull fastening. Existing receptacle connectors designed for latch lock interfaces will not engage the push-pull mechanism. Receptacle connector updates are required if the mated component cannot be changed.