3M 2340-6211TP Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 2340-6211TP is a through-hole rectangular connector header with 40 positions at 0.100" (2.54mm) pitch, designed for board-to-board or cable applications. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The connector features male pins with tin-lead contact finish, unshrouded design, and solder termination suitable for general-purpose electronic assemblies requiring reliable interconnection.

Key Parameters

Parameter	Value
Manufacturer Part Number	2340-6211TP
Manufacturer	3M
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Number of Positions	40
Pitch - Mating	0.100" (2.54mm)
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Operating Temperature	-55°C ~ 105°C
Current Rating	3A
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the 2340-6211TP is determined by the following critical parameters that must remain consistent:

Connector Type & Contact Type: Header with male pins
Number of Positions & Pitch: 40 positions at 0.100" (2.54mm) mating pitch
Mounting Configuration: Through-hole, single-row, unshrouded design
Termination Method: Solder termination
Electrical Performance: 3A current rating, UL94 V-0 flammability rating
Operating Temperature Range: Minimum -55°C to 105°C (or higher)
Mechanical Compatibility: Board-to-board or cable style, push-pull fastening

Substitute parts are grouped into two categories:

Category A - Direct 3M Series Substitutes: Parts from the 3M 2300 series that maintain identical electrical and mechanical specifications with updated contact finishes and active product status.

Category B - Cross-Manufacturer Alternatives: Parts from Molex (C-Grid III 90120 series) and Preci-Dip (350, 351, and 890 series) that meet all critical functional parameters while offering improved compliance status and availability.

Parameter Comparison

Parameter	2340-6211TP (Main)	2340-6211-TG	0901200800 (Molex)	350-10-140-00-018101	351-10-140-00-003101	890-18-040-10-002101
Manufacturer	3M	3M	Molex	Preci-Dip	Preci-Dip	Preci-Dip
Number of Positions	40	40	40	40	40	40
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)
Number of Rows	1	1	1	1	1	1
Connector Type	Header	Header	Header, Breakaway	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Tin-Lead	Gold	Gold	Gold	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin-Lead	Tin	Gold	Gold	Tin
Contact Material	Copper Alloy	Copper Alloy	Brass	Brass	Brass	Brass
Insulation Material	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled	Polyester, Glass Filled	PCT, Polyester, Glass Filled	PCT, Polyester, Glass Filled	Polyamide (PA), Nylon, Glass Filled
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	3A	3A	Not specified	3A	3A	3A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: Select from Molex 0901200800, 0901200960, or Preci-Dip series (350, 351, 890 variants). These parts carry ROHS3 Compliant status and are suitable for applications requiring regulatory compliance with modern environmental standards.

For Direct 3M Series Continuity: The 3M 2340-6211-TG provides the closest functional equivalent with active product status. This part maintains the same series designation, electrical ratings, and mechanical form factor while upgrading the mating contact finish to gold and offering superior availability (4534 units in stock versus 951 for the obsolete part).

For Extended Temperature Range: Molex 0901200800, 0901200960, and all Preci-Dip alternatives support -55°C to 125°C operating temperature, exceeding the original part's -55°C to 105°C range. This provides additional thermal margin for demanding applications.

For Contact Finish Considerations: The original 2340-6211TP uses tin-lead mating contacts. Substitutes offer gold or tin finishes on mating surfaces, which provide improved corrosion resistance and contact reliability. Gold-finished alternatives (2340-6211-TG, Preci-Dip 350/351 series) are preferred for long-term storage and high-reliability applications.

For Mechanical Compatibility: All listed substitutes maintain identical 40-position, 0.100" pitch, single-row, through-hole configuration with push-pull fastening. Physical board layout compatibility is preserved across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 2340-6211TP with 2340-6211-TG without PCB redesign?

A: Yes. Both parts share identical mechanical dimensions, pitch, position count, and mounting configuration. The primary difference is the mating contact finish (tin-lead versus gold) and product status (obsolete versus active). No PCB layout changes are required.

Q: What is the key difference between Molex 0901200800 and 0901200960?

A: Both are Molex C-Grid III 90120 series headers with identical electrical and mechanical specifications. The primary difference is packaging: 0901200800 ships in bulk, while 0901200960 ships in trays. Contact finish thickness on the mating surface also differs (15.0µin versus 30.0µin gold plating). Select based on packaging requirements and inventory handling procedures.

Q: Are Preci-Dip 350 and 351 series interchangeable with the original 2340-6211TP?

A: Functionally, yes. Both series maintain 40 positions at 0.100" pitch with identical current ratings (3A) and operating temperature range (-55°C to 125°C). However, contact geometry differs: 350 and 351 series use circular contacts versus the square contacts on the original part. This may affect mating force and contact resistance characteristics in specific applications. Verify mechanical compatibility with mating connectors before selection.

Q: What does the "Tin" versus "Gold" contact finish mean for my application?

A: Contact finish affects corrosion resistance and long-term reliability. Gold-finished contacts (2340-6211-TG, Preci-Dip 350-10 and 351-10 variants) provide superior corrosion resistance and are preferred for applications with extended storage, high humidity, or aggressive environments. Tin-finished contacts (Preci-Dip 350-80, 351-80, 890-18 variants) are suitable for standard industrial applications with normal environmental conditions.

Q: Does the breakaway feature on Molex 0901200800 affect compatibility?

A: The breakaway feature allows individual pins to be separated from the header strip. This does not affect electrical or mechanical compatibility with standard mating connectors. The breakaway capability is an additional feature that provides design flexibility without compromising standard connector operation.

Q: Which substitute offers the best compliance for new product designs?

A: Molex 0901200800 and all Preci-Dip alternatives carry ROHS3 Compliant status, making them suitable for new product designs subject to environmental regulations. The 3M 2340-6211-TG remains RoHS non-compliant and is recommended only for legacy product maintenance or applications without compliance requirements.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. Current stock levels vary significantly: 2340-6211-TG (4534 units), 0901200800 (2514 units), Preci-Dip 890-70-040-10-001101 (1151 units), and others ranging from 736 to 947 units. For high-volume production, verify supplier inventory before committing to a specific part number.

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