TE Connectivity AMP Connectors 4-146278-0 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 4-146278-0 is a rectangular connector header designed for through-hole mounting applications. This connector features a vertical orientation with 40 positions at 0.100" (2.54mm) pitch, utilizing male pin contacts with solder termination. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design and procurement requirements. Active alternatives are available from TE Connectivity and other manufacturers that maintain functional and electrical compatibility with the original specification.

Substiute Parts

4-146278-0

TE Connectivity AMP ConnectorsIn Stock: 6964-146278-0 Datasheet

Current PartRFQ

9-146278-0

TE Connectivity AMP ConnectorsIn Stock: 11199-146278-0 Datasheet

MFR RecommendedRFQ

2340-6111TG

3MIn Stock: 128682340-6111TG Datasheet

SimilarRFQ

PREC040SAFN-RC

Sullins Connector SolutionsIn Stock: 1162PREC040SAFN-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4-146278-0 is determined by strict equivalence across the following critical parameters: connector type (header, breakaway), contact type (male pin), number of positions (40), mating pitch (0.100"/2.54mm), mounting type (through hole), termination method (solder), current rating (3A), and material flammability rating (UL94 V-0).

The substitute parts identified maintain these core electrical and mechanical specifications. Variations in secondary parameters such as contact finish composition, insulation material type, and operating temperature range are noted but do not preclude functional substitution when the primary parameters align. Product status transitions from obsolete to active are documented to support procurement decisions.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TE Connectivity 9-146278-0

The 9-146278-0 represents the direct active equivalent to the obsolete 4-146278-0. Both components are from the same manufacturer (TE Connectivity AMP Connectors) and the same series (AMPMODU Mod II). The 9-146278-0 maintains identical electrical and mechanical specifications with the exception of contact finish composition (Tin versus Tin-Lead) and RoHS compliance status (ROHS3 Compliant versus RoHS non-compliant). This part is currently in active production status with 1072 units in stock, making it the preferred substitution path for direct replacement applications.

Secondary Recommendation: Sullins Connector Solutions PREC040SAFN-RC

The PREC040SAFN-RC provides functional equivalence across all critical parameters: 40-position, 0.100" pitch, through-hole solder termination, 3A current rating, and UL94 V-0 flammability rating. This part is ROHS3 compliant and carries REACH Unaffected status. The primary distinction is an extended contact post length (0.620" versus 0.120"), which accommodates applications requiring deeper board penetration or extended solder joint engagement. This part is suitable for applications where the longer post length does not create mechanical interference.

Alternative Consideration: 3M 2340-6111TG

The 2340-6111TG from 3M's 2300 series maintains core functional compatibility with identical pitch, position count, and current rating. Notable differences include gold plating on mating contacts (versus tin or tin-lead), thermoplastic glass-filled insulation material, and a slightly reduced minimum operating temperature (-55°C versus -65°C). This part is RoHS non-compliant and REACH Affected. Selection of this part is appropriate only when gold-plated contacts are specifically required for corrosion resistance or contact reliability in particular environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the 9-146278-0 be used as a direct replacement for the 4-146278-0?

A: Yes. The 9-146278-0 is the active equivalent of the obsolete 4-146278-0. Both parts share identical connector type, position count, pitch, mounting method, and current rating. The primary difference is RoHS compliance status (ROHS3 Compliant versus non-compliant) and contact finish composition (Tin versus Tin-Lead). For applications where RoHS compliance is required, the 9-146278-0 is the appropriate selection.

Q: What is the significance of the contact post length difference in the PREC040SAFN-RC?

A: The PREC040SAFN-RC features a contact post length of 0.620" compared to 0.120" in the 4-146278-0 and 9-146278-0. This extended post length accommodates applications requiring deeper penetration through printed circuit board material or applications where extended solder joint engagement is necessary. Verify that the extended post length does not create mechanical interference with board layout or component placement before selection.

Q: Are there RoHS compliance differences between the substitute parts?

A: Yes. The 9-146278-0 and PREC040SAFN-RC are both ROHS3 Compliant. The original 4-146278-0 and the 3M 2340-6111TG are RoHS non-compliant. For applications subject to RoHS regulations, select either the 9-146278-0 or PREC040SAFN-RC.

Q: What is the operating temperature range difference between parts?

A: The 4-146278-0 and 9-146278-0 operate from -65°C to 105°C. The 3M 2340-6111TG operates from -55°C to 105°C, providing a reduced low-temperature capability. The PREC040SAFN-RC operates from -40°C to 105°C. For applications requiring operation below -55°C, the 9-146278-0 is the appropriate selection.

Q: Why would the 3M 2340-6111TG be selected over other options?

A: The 2340-6111TG is selected when gold-plated mating contacts are required for enhanced corrosion resistance or specific contact reliability requirements. The gold plating (10.0µin thickness) provides superior performance in harsh environmental conditions or applications with extended storage periods. This part is suitable only when gold plating is a specified requirement.

Q: What is the difference in insulation material between the parts?

A: The 4-146278-0 and 9-146278-0 use Liquid Crystal Polymer (LCP) insulation. The 3M 2340-6111TG uses thermoplastic glass-filled material. The PREC040SAFN-RC uses Polybutylene Terephthalate (PBT). All three materials meet UL94 V-0 flammability requirements. Material selection does not affect functional compatibility but may influence mechanical properties and environmental resistance characteristics.

Q: Is packaging type a consideration for substitution?

A: The 4-146278-0 original part does not specify packaging type. The substitute parts are available in Bulk packaging. Verify that bulk packaging meets procurement and handling requirements for your application. Contact the supplier if alternative packaging configurations are required.

Q: Can these parts be used interchangeably in existing designs?

A: The 9-146278-0 provides direct interchangeability with the 4-146278-0 without design modification. The PREC040SAFN-RC requires verification that the extended contact post length (0.620" versus 0.120") does not create mechanical conflicts with board layout. The 3M 2340-6111TG requires verification of the reduced minimum operating temperature (-55°C versus -65°C) and confirmation that gold-plated contacts are compatible with existing solder processes and contact materials.