3M 926141-01-12-EU Equivalent & Substitute Parts

Part Overview

The 3M 926141-01-12-EU is a rectangular connector header designed for through-hole mounting applications. This 12-position, single-row connector operates at 0.100" (2.54mm) pitch and is rated for 2.5A per contact with an operating temperature range of -40°C to 105°C. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Number of Positions	12
Number of Rows	1
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Current Rating	2.5A
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
Insulation Material	Polycyclohexylenedimethylene Terephthalate (PCT)

Substitute Part Grouping Explanation

The Amphenol ICC (FCI) 77311-139-12LF qualifies as a functional substitute based on the following critical parameters:

Connector Type: Both are header connectors with male pin contacts
Position Count & Pitch: Both feature 12 positions at 0.100" (2.54mm) mating pitch
Mounting & Termination: Both use through-hole mounting with solder termination
Contact Configuration: Both are single-row, unshrouded, board-to-board connectors
Electrical Performance: The substitute supports 3A per contact, exceeding the 2.5A requirement
Temperature Range: The substitute operates -65°C to 125°C, encompassing the original -40°C to 105°C range
Flammability Compliance: Both meet UL94 V-0 rating
Moisture Sensitivity: Both are MSL 1 (Unlimited)

Parameter Comparison

Parameter	3M 926141-01-12-EU	Amphenol ICC 77311-139-12LF
Manufacturer	3M	Amphenol ICC (FCI)
Series	929	BERGSTIK®
Product Status	Obsolete	Active
Connector Type	Header, Breakaway	Header
Contact Type	Male Pin	Male Pin
Number of Positions	12	12
Number of Rows	1	1
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Length - Mating	0.428" (10.87mm)	0.441" (11.20mm)
Contact Length - Post	0.100" (2.54mm)	0.120" (3.05mm)
Overall Contact Length	0.628" (15.95mm)	0.661" (16.79mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold or Gold, GXT™
Contact Finish - Post	Gold	Tin
Contact Material	Copper Alloy	Phosphor Bronze
Current Rating	2.5A	3A per Contact
Operating Temperature	-40°C ~ 105°C	-65°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Material	Polycyclohexylenedimethylene Terephthalate (PCT)	Thermoplastic
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not specified	RoHS Compliant

Engineering Selection Recommendations

The Amphenol ICC 77311-139-12LF is the designated substitute for the obsolete 3M 926141-01-12-EU. Selection is based on:

Product Status: The substitute is active and in production, ensuring long-term availability and supply chain continuity
Compliance: The substitute meets UL94 V-0 flammability requirements and is RoHS compliant, satisfying modern regulatory standards
Electrical Compatibility: The substitute's 3A per contact rating exceeds the original 2.5A specification, providing margin for existing circuit designs
Thermal Performance: The extended operating temperature range (-65°C to 125°C) encompasses the original specification
Mechanical Compatibility: Identical pitch, position count, and mounting method ensure direct PCB layout compatibility
Contact Geometry: Minor variations in contact length (0.661" vs. 0.628") remain within typical mating tolerance for standard connectors

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 77311-139-12LF be used as a direct replacement on existing PCBs designed for the 3M 926141-01-12-EU?

A: Yes. Both connectors share identical pitch (0.100"), position count (12), row configuration (1), and through-hole mounting footprint. PCB layout modifications are not required.

Q: What are the differences in contact materials between the two parts?

A: The original uses copper alloy contacts with gold finish on both mating and post surfaces. The substitute uses phosphor bronze contacts with gold finish on the mating surface and tin finish on the post surface. Both materials are suitable for solder termination and provide equivalent electrical performance in standard applications.

Q: Does the substitute support the same current rating?

A: The substitute supports 3A per contact, which exceeds the original 2.5A rating. Existing designs operating at 2.5A or below are fully compatible.

Q: Are there any temperature range limitations when substituting?

A: No. The substitute's operating range (-65°C to 125°C) fully encompasses the original range (-40°C to 105°C). Designs operating within the original temperature specification will function within the substitute's rated range.

Q: What is the significance of the RoHS compliance status?

A: The substitute is RoHS compliant, meeting current environmental and regulatory requirements for electronic components. This is advantageous for new designs and compliance documentation.

Q: Are there any mechanical dimension changes that could affect mating?

A: Contact length varies slightly (0.661" substitute vs. 0.628" original). This difference is within standard connector mating tolerance and does not affect electrical or mechanical compatibility with standard mating connectors.

Q: What packaging is available for the substitute?

A: The Amphenol ICC 77311-139-12LF is supplied in bag packaging, with 1022 pieces available in current inventory.

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