3M 3793-5002 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 3793-5002 is a through-hole, right-angle rectangular connector header with 10 positions at 2.54mm pitch, designed for board-to-board or cable interconnection applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The connector features shrouded 4-wall construction with gold-plated mating contacts and tin-lead post finish, operating across -55°C to 105°C with a 1.75A current rating per contact.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	10
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Current Rating	1.75A

Substitute Part Grouping Explanation

Substitution eligibility for the 3M 3793-5002 is determined by the following critical parameters:

Pitch and Position Configuration: All substitute parts must maintain 0.100" (2.54mm) mating pitch with 10 positions in 2-row configuration
Mounting and Orientation: Through-hole, right-angle mounting is required
Shrouding: 4-wall shrouded construction is mandatory for mechanical compatibility
Contact Type: Male pin headers only
Mating Contact Finish: Gold plating on mating surfaces
Operating Temperature Range: Minimum -55°C to 105°C capability
Flammability Rating: UL94 V-0 compliance required

The following parts meet these criteria and are electrically and mechanically compatible:

N3793-5002RB (3M, Active status, RoHS Compliant)
D3793-5002-AR (3M, Active status, RoHS Compliant)
71922-010LF (Amphenol ICC/FCI Quickie™ series, Active status, RoHS Compliant)
CWN-501-10-0021 (CW Industries, Active status, ROHS3 Compliant)
CWN-512-10-0021 (CW Industries, Active status, ROHS3 Compliant)

Parameter Comparison

Parameter	3793-5002	N3793-5002RB	D3793-5002-AR	71922-010LF	CWN-501-10-0021	CWN-512-10-0021
Manufacturer	3M	3M	3M	Amphenol ICC (FCI)	CW Industries	CW Industries
Product Status	Obsolete	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	10	10	10	10	10	10
Number of Rows	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)
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)
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
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Finish - Mating	Gold	Gold	Gold	Gold, GXT™	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Length - Mating	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.112" (2.84mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.114" (2.90mm)	0.090" (2.29mm)	0.155" (3.94mm)
Insulation Height	0.340" (8.64mm)	0.340" (8.64mm)	0.340" (8.64mm)	0.339" (8.61mm)	0.350" (8.89mm)	0.350" (8.89mm)
Contact Shape	Square	Square	Square	Square	Circular	Circular
Contact Material	Copper Alloy	Copper Alloy	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	Not specified	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	1.75A	1.75A	1.75A	Not specified	1A	1A
RoHS Status	Non-compliant	Compliant	Compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: N3793-5002RB

The N3793-5002RB is the direct 3M equivalent with active product status and RoHS compliance. This part maintains identical electrical and mechanical specifications to the obsolete 3793-5002, with the primary difference being post contact finish (tin versus tin-lead) and RoHS compliance. This is the preferred choice for direct replacement in new designs and production continuity.

Secondary Recommendation: D3793-5002-AR

The D3793-5002-AR is a 3M manufacturer-recommended alternative with active status and RoHS compliance. It differs in contact material (brass versus copper alloy) and mating contact finish thickness (10.0µin versus 30.0µin). This part is suitable for applications where the original tin-lead finish is not required and where the reduced gold plating thickness is acceptable.

Alternative Recommendation: 71922-010LF

The 71922-010LF (Amphenol ICC Quickie™ series) provides cross-manufacturer compatibility with active status and RoHS compliance. Differences include phosphor bronze contact material, slightly reduced mating contact length (0.228" versus 0.240"), and unspecified current rating. This option is suitable for applications where manufacturer diversity is required.

Limited Compatibility: CWN-501-10-0021 and CWN-512-10-0021

The CW Industries CWN series parts (CWN-501-10-0021 and CWN-512-10-0021) maintain core pitch and position compatibility but introduce mechanical differences: circular contact shape (versus square), different fastening type (latch lock/eject hooks versus push-pull), reduced current rating (1A versus 1.75A), and different post contact lengths. CWN-512-10-0021 features longer posts (0.155" versus 0.112"), while CWN-501-10-0021 features shorter posts (0.090" versus 0.112"). These parts are suitable only for applications where the mechanical interface and current requirements are compatible with these variations.

Frequently Asked Questions (FAQ)

Q: Can N3793-5002RB be used as a direct replacement for 3793-5002?

A: Yes. The N3793-5002RB maintains identical pitch (2.54mm), position count (10), row configuration (2), mounting type (through-hole right-angle), shrouding (4-wall), and operating temperature range (-55°C to 105°C). The primary difference is post contact finish (tin versus tin-lead) and RoHS compliance status. For applications where tin-lead finish is not specifically required, this is a direct functional replacement.

Q: What are the key differences between the 3M substitutes (N3793-5002RB and D3793-5002-AR)?

A: Both maintain identical pitch, position, and mounting specifications. N3793-5002RB uses copper alloy contacts with 30.0µin gold plating on posts, while D3793-5002-AR uses brass contacts with 10.0µin gold plating on posts. N3793-5002RB is the closer electrical equivalent; D3793-5002-AR is suitable where reduced post plating thickness is acceptable.

Q: Why do CWN-501-10-0021 and CWN-512-10-0021 have different post lengths?

A: CWN-501-10-0021 features 0.090" posts (shorter), while CWN-512-10-0021 features 0.155" posts (longer). The original 3793-5002 has 0.112" posts. Post length affects PCB insertion depth and solder joint formation. Selection depends on specific PCB thickness and solder joint requirements.

Q: Are CWN series connectors compatible with the original 3793-5002 mating interface?

A: CWN series parts maintain 2.54mm pitch and 10-position configuration but use circular contacts instead of square contacts and latch lock/eject hooks instead of push-pull fastening. While mechanically similar, they are not direct plug-compatible. Mating receptacles designed for square contacts and push-pull fastening may not work with CWN circular contacts and latch mechanisms.

Q: What is the significance of the contact finish thickness differences?

A: The original 3793-5002 specifies 30.0µin (0.76µm) gold plating on mating contacts. D3793-5002-AR specifies 10.0µin (0.25µm). Thicker plating provides greater wear resistance and corrosion protection over extended mating cycles. For applications with frequent connection/disconnection, the thicker 30.0µin finish is preferred.

Q: Which substitute part has the highest operating temperature rating?

A: CWN-501-10-0021 and CWN-512-10-0021 both operate to 125°C, compared to the original 3793-5002 specification of 105°C. The 3M substitutes (N3793-5002RB and D3793-5002-AR) maintain the original 105°C maximum. For applications requiring extended temperature operation, CWN series parts provide additional thermal margin.

Q: What is the current rating difference between substitute parts?

A: The original 3793-5002 and 3M substitutes (N3793-5002RB and D3793-5002-AR) are rated for 1.75A per contact. CWN-501-10-0021 and CWN-512-10-0021 are rated for 1A per contact. The 71922-010LF does not specify a current rating. For applications requiring 1.75A per contact, 3M substitutes are required.

Q: Are all substitute parts RoHS compliant?

A: The original 3793-5002 is RoHS non-compliant. All substitute parts listed are RoHS compliant (N3793-5002RB, D3793-5002-AR, 71922-010LF) or ROHS3 compliant (CWN-501-10-0021, CWN-512-10-0021). For applications subject to RoHS regulations, any of these substitutes are acceptable.

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