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3M 2340-6111TP Equivalent & Substitute Parts
Part Overview
The 3M 2340-6111TP is a rectangular connector header designed for through-hole mounting applications. This connector features 40 positions with 0.100" (2.54mm) pitch spacing, unshrouded design, and solder termination. The part operates across a temperature range of -55°C to 105°C and carries a current rating of 3A per contact.
The 2340-6111TP is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this connector specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 2340-6111TP |
| 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 |
| Fastening Type | Push-Pull |
| Contact Shape | Square |
| Operating Temperature | -55°C ~ 105°C |
| Current Rating | 3A |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 2340-6111TP is determined by the following critical parameters:
- Connector Type & Contact Configuration: Header with male pins, 40 positions, single row
- Pitch Specification: 0.100" (2.54mm) mating pitch
- Mounting & Termination: Through-hole solder termination with push-pull fastening
- Electrical Performance: 3A current rating per contact
- Environmental Compliance: UL94 V-0 flammability rating, MSL 1 (Unlimited)
- Contact Geometry: Square or circular contact shapes with equivalent mating contact lengths
- Operating Temperature Range: Minimum -55°C to 105°C capability
Substitute parts are grouped into two categories based on contact material and finish specifications:
Category A - Molex KK254 Series (0878914001, 0878914003, 0878914006): Active status connectors with gold or tin mating finishes, polyamide insulation, and breakaway capability. These parts maintain the 40-position, 2.54mm pitch configuration with equivalent electrical performance.
Category B - Preci-Dip 350 Series (350-10-140-00-001101, 350-10-140-00-006101, 350-10-140-00-013101, 350-10-140-01-666101, 350-80-140-00-001101, 350-80-140-00-006101, 350-80-140-00-013101): Active status connectors with circular contact geometry, brass material, and gold or tin finishes. These parts support extended operating temperature to 125°C and 150VDC voltage rating.
Parameter Comparison
| Parameter | 2340-6111TP (3M) | 0878914001 (Molex) | 0878914003 (Molex) | 0878914006 (Molex) | 350-10-140-00-001101 (Preci-Dip) | 350-80-140-00-006101 (Preci-Dip) |
|---|---|---|---|---|---|---|
| Connector Type | Header | Header, Breakaway | Header, Breakaway | Header, Breakaway | Header | Header |
| Contact Type | Male Pin | Male Pin | Male Pin | Male Pin | Male Pin | Male Pin |
| 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 |
| 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 Shape | Square | Square | Square | Square | Circular | Circular |
| Contact Material | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy | Brass | Brass |
| Contact Finish - Mating | Tin-Lead | Gold | Gold | Tin | Gold | Tin |
| Operating Temperature | -55°C ~ 105°C | Not specified | Not specified | Not specified | -55°C ~ 125°C | -55°C ~ 125°C |
| Current Rating | 3A | Not specified | Not specified | Not specified | 3A | 3A |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
For Direct Mechanical & Electrical Compatibility:
The Molex KK254 series (0878914001, 0878914003, 0878914006) provides the closest functional equivalence to the 2340-6111TP. These connectors maintain identical 40-position, 2.54mm pitch configuration with square contact geometry and equivalent mating contact lengths. All three Molex variants are active products with ROHS3 compliance, addressing the obsolescence of the original 3M part.
- 0878914001: Gold-plated mating contacts, suitable for applications requiring enhanced corrosion resistance
- 0878914003: Gold-plated mating contacts with tin-plated posts, offering balanced performance
- 0878914006: Tin-plated mating and post contacts, matching the original tin-lead finish specification
For Extended Environmental Performance:
The Preci-Dip 350 series (350-10-140-00-001101, 350-10-140-00-006101, 350-10-140-00-013101, 350-80-140-00-001101, 350-80-140-00-006101, 350-80-140-00-013101) offers extended operating temperature capability to 125°C and 150VDC voltage rating. These connectors feature circular contact geometry with brass material and are available in gold or tin finishes. Selection within this series depends on specific contact length and post configuration requirements for your application.
Compliance Considerations:
All substitute parts listed are ROHS3 compliant and carry UL94 V-0 flammability ratings, meeting modern regulatory requirements. The original 2340-6111TP is RoHS non-compliant; substitution with any listed alternative improves environmental compliance posture.
Frequently Asked Questions (FAQ)
Q: Can Molex KK254 series connectors directly replace the 3M 2340-6111TP?
A: Yes. The Molex 0878914001, 0878914003, and 0878914006 maintain the critical specifications: 40 positions, 0.100" (2.54mm) pitch, square contact geometry, through-hole solder termination, and push-pull fastening. Mating contact lengths are equivalent (0.230" / 5.84mm). These are active products with current availability.
Q: What is the difference between the three Molex KK254 variants?
A: The primary difference is contact finish specification. 0878914001 and 0878914003 feature gold-plated mating contacts (flash thickness 10.0µin / 0.25µm). 0878914006 uses tin-plated mating contacts (100.0µin / 2.54µm thickness), more closely matching the original tin-lead specification. Post finishes vary: 0878914001 has no specified post finish, 0878914003 uses tin, and 0878914006 uses tin on both mating and post.
Q: Why would I select Preci-Dip 350 series over Molex KK254?
A: Preci-Dip 350 series connectors support extended operating temperature to 125°C (versus unspecified for Molex) and carry 150VDC voltage rating. These are appropriate for applications requiring higher thermal performance. Contact geometry is circular rather than square, and contact material is brass rather than copper alloy. Overall contact lengths vary across the 350 series lineup to accommodate different application requirements.
Q: Are there mechanical compatibility concerns between square and circular contact geometries?
A: Contact geometry (square vs. circular) is a mating interface specification. Substitution between square and circular contacts requires verification that the mating connector receptacle is designed to accept the alternate geometry. Pitch spacing (0.100" / 2.54mm) and contact length specifications must align with your mating connector design.
Q: What is the significance of the contact length variations in the Preci-Dip 350 series?
A: Contact length variations (mating contact length ranging from 0.134" to 0.156", post length from 0.110" to 0.164") accommodate different PCB thicknesses and application geometries. Selection depends on your specific board thickness and connector stack-up requirements. Overall contact length ranges from 0.390" to 0.477" across the series.
Q: Are all substitute parts MSL 1 (Unlimited)?
A: Yes. The 2340-6111TP and all listed substitute parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture control requirements during storage, handling, or assembly.
Q: What is the inventory status for these substitute parts?
A: All listed substitute parts are currently in stock with quantities ranging from 756 to 1116 pieces. Molex KK254 variants range from 913 to 957 pieces. Preci-Dip 350 series inventory ranges from 797 to 1116 pieces.
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