3M 2540-6002UB Equivalent & Substitute Parts

Part Overview

The 3M 2540-6002UB is a rectangular connector header designed for through-hole mounting applications. This connector features 40 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing, shrouded 4-wall construction, and gold-plated mating contacts. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	40
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Material Flammability Rating	UL94 V-0
Operating Temperature	-55°C ~ 105°C
Current Rating	1.75A
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 2540-6002UB is determined by the following critical parameters:

Connector configuration: 40 positions, 2 rows, 0.100" (2.54mm) pitch
Mechanical interface: Through-hole solder termination, shrouded 4-wall design, push-pull fastening
Electrical performance: Gold-plated mating contacts, 1.75A current rating minimum
Environmental compliance: UL94 V-0 flammability rating, operating temperature range -55°C to 105°C
Regulatory status: RoHS compliance and REACH status

Substitute parts are grouped into two categories:

Direct 3M Equivalents: Parts from the 3M 2500 and D2500 series that maintain identical mechanical and electrical specifications with updated compliance status.

Cross-Manufacturer Alternatives: Parts from KYOCERA AVX, Molex, and TE Connectivity that meet the core functional requirements while offering active product status and modern compliance certifications.

Parameter Comparison

Parameter	2540-6002UB (Main)	N2540-6002-RB	D2540-6002-AR	008383040000010	0702464001	0702464002	0702464004	0878344011	0878344041	103308-8	103309-8
Manufacturer	3M	3M	3M	KYOCERA AVX	Molex	Molex	Molex	Molex	Molex	TE Connectivity	TE Connectivity
Number of Positions	40	40	40	40	40	40	40	40	40	40	40
Number of Rows	2	2	2	2	2	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)	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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold or Gold-Palladium	Gold or Gold-Palladium
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	-65°C ~ 105°C	-65°C ~ 105°C
Current Rating	1.75A	1.75A	1.75A	1A	Not specified	Not specified	Not specified	Not specified	Not specified	1A per Contact	1A per Contact
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant
REACH Status	REACH Affected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Affected	REACH Affected
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For RoHS3 and REACH Compliance Requirements:

The N2540-6002-RB (3M) is the direct equivalent offering identical specifications with ROHS3 compliance and REACH unaffected status. This part maintains the original 3M 2500 series design while meeting modern regulatory requirements.

The D2540-6002-AR (3M D2500 series) provides an alternative with RoHS compliance and REACH unaffected status. This part is suitable for applications requiring board-to-cable/wire connections.

For Cross-Manufacturer Alternatives with Active Status:

Molex C-Grid 70246 series (0702464001, 0702464002, 0702464004) and C-Grid 87834 series (0878344011, 0878344041) offer ROHS3 compliance and REACH unaffected status with active product support. These parts are suitable for automotive, general purpose, lighting, medical, and telecommunications applications.

KYOCERA AVX 008383040000010 provides ROHS3 compliance and REACH unaffected status with active product status. Current rating is 1A, which is lower than the original specification.

For Legacy System Compatibility:

TE Connectivity AMP-Latch series (103308-8, 103309-8) maintains compatibility with legacy designs. These parts retain RoHS non-compliant and REACH affected status consistent with the original part. Operating temperature range extends to -65°C, providing enhanced low-temperature performance.

Frequently Asked Questions (FAQ)

Q: Can I use N2540-6002-RB as a direct replacement for 2540-6002UB?

A: Yes. The N2540-6002-RB maintains identical electrical and mechanical specifications including 40 positions, 2-row configuration, 0.100" pitch, shrouded 4-wall design, and 1.75A current rating. The primary difference is product status (active vs. obsolete) and improved regulatory compliance (ROHS3 compliant, REACH unaffected).

Q: What is the difference between the 3M substitutes (N2540-6002-RB and D2540-6002-AR)?

A: Both are 3M products with identical core specifications. N2540-6002-RB is from the 2500 series and is available in bulk packaging. D2540-6002-AR is from the D2500 series, designed for board-to-cable/wire connections, and is available in tray packaging. The D2540-6002-AR has a longer overall contact length (0.492" vs. not specified) and lower insulation height (0.253" vs. 0.390").

Q: Are Molex and TE Connectivity parts mechanically compatible?

A: All substitute parts listed maintain the same 40-position, 2-row, 0.100" pitch configuration and shrouded 4-wall design. Mechanical compatibility is ensured through these standardized parameters. However, minor variations in contact length, insulation height, and contact material exist. Verify specific mechanical envelope requirements for your application.

Q: What is the current rating difference between 2540-6002UB and KYOCERA AVX 008383040000010?

A: The original 2540-6002UB is rated at 1.75A, while the KYOCERA AVX 008383040000010 is rated at 1A. This lower current rating may limit suitability for high-current applications.

Q: Which substitute part offers the widest operating temperature range?

A: TE Connectivity AMP-Latch series (103308-8 and 103309-8) offer -65°C to 105°C, extending the low-temperature capability by 10°C compared to the original -55°C to 105°C specification.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in multiple packaging formats: bulk (N2540-6002-RB, 0702464002, 103308-8), tray (D2540-6002-AR, 008383040000010, 0702464001, 0702464004, 0878344011, 0878344041), and tube (103309-8). Select packaging based on procurement volume and handling requirements.

Q: Are all substitute parts RoHS compliant?

A: No. Molex C-Grid series and KYOCERA AVX parts are ROHS3 compliant. TE Connectivity AMP-Latch series (103308-8, 103309-8) are RoHS non-compliant, matching the original part's compliance status. 3M N2540-6002-RB and D2540-6002-AR are RoHS compliant.

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