3M 3464-0002 Card Edge Connector - Equivalent & Substitute Parts

Part Overview

The 3M 3464-0002 is a 40-position female card edge connector with dual-row configuration, 0.100" (2.54mm) pitch, and gold-plated copper alloy contacts. This connector is designed for panel mount applications with IDC termination and operates across -55°C to 105°C. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and maintenance.

Key Parameters

Parameter	Value
Number of Positions	40
Number of Rows	2
Pitch	0.100" (2.54mm)
Card Type	Non Specified - Dual Edge
Card Thickness	0.054" ~ 0.070" (1.37mm ~ 1.78mm)
Gender	Female
Contact Material	Copper Alloy
Contact Finish	Gold
Operating Temperature Range	-55°C ~ 105°C
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

The Mercury United Electronics 341-040-500-202 qualifies as a substitute for the 3M 3464-0002 based on the following critical parameters:

Electrical Compatibility: Both connectors feature 40 positions arranged in 2 rows with 0.100" (2.54mm) pitch, ensuring identical pin spacing and contact count.
Mechanical Compatibility: Both accept cards with thickness 0.054" ~ 0.070" (1.37mm ~ 1.78mm) and maintain dual-edge read-out configuration.
Contact Properties: Both use copper alloy contacts with gold plating, providing equivalent electrical conductivity and corrosion resistance.
Environmental Rating: Both operate within overlapping temperature ranges suitable for industrial applications.
Compliance: Both are RoHS compliant, meeting modern regulatory requirements.

Substitution is valid where the specific differences in termination method, mounting type, and contact finish thickness do not conflict with the application requirements.

Parameter Comparison

Parameter	3M 3464-0002	Mercury 341-040-500-202
Manufacturer	3M	Mercury United Electronics, Inc.
Number of Positions	40	40
Number of Rows	2	2
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Card Type	Non Specified - Dual Edge	Non Specified - Dual Edge
Card Thickness	0.054" ~ 0.070" (1.37mm ~ 1.78mm)	0.054" ~ 0.070" (1.37mm ~ 1.78mm)
Gender	Female	Female
Contact Material	Copper Alloy	Copper Alloy
Contact Finish	Gold	Gold
Operating Temperature Range	-55°C ~ 105°C	-40°C ~ 105°C
Product Status	Obsolete	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant
Mounting Type	Panel Mount	Through Hole
Termination	IDC	Solder Eyelet(s)
Contact Finish Thickness	30.0µin (0.76µm)	10.0µin (0.25µm)
Insulation Material	Polybutylene Terephthalate (PBT), Glass Filled	Diallyl Phthalate (DAP)

Engineering Selection Recommendations

The Mercury 341-040-500-202 is an active product with current manufacturing support, making it suitable for applications requiring long-term component availability. Both connectors meet RoHS compliance requirements, with the Mercury part offering ROHS3 certification.

Selection between these connectors depends on termination method compatibility. The 3M 3464-0002 uses IDC termination for panel mount applications, while the Mercury 341-040-500-202 employs solder eyelet termination for through-hole PCB mounting. Applications requiring panel-mount IDC termination must retain the 3M connector or identify alternative panel-mount solutions. Applications compatible with through-hole solder termination can transition to the Mercury part.

The Mercury connector's lower minimum operating temperature (-40°C versus -55°C) is acceptable for most industrial applications but should be verified if the system requires operation below -40°C.

Frequently Asked Questions (FAQ)

Q: Are the 3M 3464-0002 and Mercury 341-040-500-202 pin-compatible?

A: Yes. Both connectors feature 40 positions in 2 rows with 0.100" (2.54mm) pitch and accept identical card thicknesses (0.054" ~ 0.070"). Pin spacing and contact count are identical.

Q: What is the primary difference between these connectors?

A: The main differences are termination method and mounting type. The 3M uses IDC termination for panel mounting, while the Mercury uses solder eyelet termination for through-hole PCB mounting. The Mercury also has thinner gold plating (10.0µin versus 30.0µin).

Q: Can I use the Mercury connector as a direct replacement in existing assemblies?

A: Direct replacement is possible only if the PCB layout and mounting structure support through-hole solder termination instead of panel-mount IDC termination. The electrical and mechanical interfaces are compatible, but the physical mounting method differs.

Q: Are both connectors RoHS compliant?

A: Yes. The 3M 3464-0002 is RoHS Compliant, and the Mercury 341-040-500-202 is ROHS3 Compliant. Both meet current regulatory requirements.

Q: What is the temperature operating range difference?

A: The 3M connector operates from -55°C to 105°C, while the Mercury connector operates from -40°C to 105°C. The Mercury part has a higher minimum temperature limit. Verify application requirements before substitution if operation below -40°C is necessary.

Q: Why is the 3M connector listed as obsolete?

A: The 3M 3464-0002 is no longer in active production. The Mercury 341-040-500-202 is an active product with ongoing manufacturing support, making it the preferred choice for new designs and long-term availability.

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