TE Connectivity AMP Connectors 3-1437401-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 3-1437401-4 is an 8-circuit barrier block connector with 0.325" (8.26mm) pitch spacing, designed for through-hole mounting applications. This component features screws with captive plate termination on the top and PC pin termination on the bottom, rated for 20A at 300V operation. The part belongs to the SSB3 series from the Buchanan product line and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts with compatible electrical and mechanical specifications is necessary for ongoing system maintenance and new design implementations.

Substiute Parts

3-1437401-4

TE Connectivity AMP ConnectorsIn Stock: 9933-1437401-4 Datasheet

Current PartRFQ

4DB-P108-08

TE Connectivity AMP ConnectorsIn Stock: 7904DB-P108-08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3-1437401-4 is determined by strict alignment with the following critical parameters:

Core Compatibility Requirements:

• Terminal block type must be barrier block
• Number of circuits must equal 8
• Pitch spacing must be 0.325" (8.26mm)
• Top termination must be screws with captive plate
• Bottom termination must be PC pin
• Barrier configuration must be 2 wall (dual)
• Mounting type must be through hole

Electrical Performance Parameters:

• Current rating must support minimum 20A
• Voltage rating must support minimum 300V
• Wire gauge range must accommodate 14-26 AWG

Environmental & Compliance Parameters:

• Operating temperature range must encompass -60°C to 105°C
• Flammability rating must meet or exceed UL94 V-2

The substitute part 4DB-P108-08 meets the core mechanical and functional requirements. However, specific electrical parameter differences exist that must be evaluated for application suitability.

Parameter Comparison

Engineering Selection Recommendations

The 4DB-P108-08 serves as an active substitute for the obsolete 3-1437401-4 based on matching mechanical form factor, circuit count, pitch spacing, and termination style. The substitute part is currently in active production status with 683 units in stock, providing supply continuity for applications requiring 8-circuit barrier block connectors with 0.325" pitch.

Electrical Parameter Considerations:

The substitute part operates at a reduced voltage rating of 150V compared to the original part's 300V specification. Applications operating at voltages exceeding 150V require evaluation against the substitute's electrical limits. The wire gauge acceptance range narrows from 14-26 AWG to 12-22 AWG, eliminating compatibility with 24-26 AWG wire sizes.

Environmental & Compliance Advantages:

The 4DB-P108-08 provides enhanced flammability performance with UL94 V-0 rating versus the original V-2 rating. The substitute achieves ROHS3 compliance, addressing modern regulatory requirements. However, the operating temperature specification lists only the upper limit of 105°C without explicit lower temperature boundary documentation, whereas the original part specifies -60°C to 105°C operation.

Material Composition:

The substitute employs thermoplastic insulation material in place of polypropylene, representing a material change that may affect mechanical and thermal properties in specific application environments.

Substitution Validity:

The 4DB-P108-08 is a valid substitute for applications operating within 150V maximum, utilizing wire gauges 12-22 AWG, and not requiring operation below 0°C. For applications exceeding these electrical or environmental parameters, the original 3-1437401-4 specifications must be maintained or alternative parts evaluated.

Frequently Asked Questions (FAQ)

Q: Can the 4DB-P108-08 directly replace the 3-1437401-4 in all applications?

A: The 4DB-P108-08 provides direct mechanical and functional replacement for applications operating at 150V or below with wire gauges between 12-22 AWG. Applications requiring 300V operation or utilizing 24-26 AWG wire sizes require alternative solutions.

Q: What is the primary difference between these two barrier block connectors?

A: The primary differences are voltage rating (300V versus 150V), wire gauge range (14-26 AWG versus 12-22 AWG), and operating temperature documentation (−60°C to 105°C versus 105°C upper limit only). Both maintain identical circuit count, pitch spacing, and termination configuration.

Q: Is the 4DB-P108-08 suitable for high-voltage applications?

A: The 4DB-P108-08 is rated for maximum 150V operation. Applications requiring 300V operation must use the original 3-1437401-4 or identify alternative components rated for higher voltage.

Q: Does the material change from polypropylene to thermoplastic affect performance?

A: Material composition differences may affect mechanical properties, thermal characteristics, and chemical resistance. Application-specific environmental conditions determine whether this material change is acceptable.

Q: What is the significance of the UL94 V-0 rating on the substitute part?

A: UL94 V-0 represents enhanced flammability performance compared to the original V-2 rating, indicating superior flame resistance and self-extinguishing properties. This improvement benefits applications with stringent fire safety requirements.

Q: Are both parts RoHS compliant?

A: The original 3-1437401-4 lists RoHS status as not applicable. The substitute 4DB-P108-08 achieves ROHS3 compliance, meeting current environmental and hazardous substance restrictions.

Q: What packaging differences exist between these parts?

A: The original part packaging is not specified in available documentation. The substitute 4DB-P108-08 is supplied in bulk packaging.

Q: Can 24-26 AWG wire be used with the 4DB-P108-08?

A: No. The 4DB-P108-08 accepts wire gauges 12-22 AWG only. The original 3-1437401-4 supports 14-26 AWG, providing compatibility with larger gauge wires.