TE Connectivity AMP Connectors 2-1546931-0 Terminal Block Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 2-1546931-0 is a 20 Position Terminal Block Header with male pins, unshrouded design, and 0.197" (5.00mm) vertical pitch for through-hole mounting. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain electrical and mechanical compatibility. The part is part of the Buchanan series and features solder termination with UL94 V-0 flammability rating and ROHS3 compliance.

Substiute Parts

2-1546931-0

TE Connectivity AMP ConnectorsIn Stock: 10052-1546931-0 Datasheet

Current PartRFQ

A-TB500-OP20

Assmann WSW ComponentsIn Stock: 939A-TB500-OP20 Datasheet

SimilarRFQ

ESZH20160

Amphenol PCDIn Stock: 1048ESZH20160 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2-1546931-0 terminal block header is determined by strict alignment of the following critical parameters:

Electrical Compatibility Parameters:

• Number of Positions: 20
• Pitch: 0.197" (5.00mm)
• Voltage Rating: 300 V UL
• Termination Style: Solder
• Contact Tail Length: 0.138" (3.50mm)
• Insulation Height: 0.079" (2.00mm)

Mechanical Compatibility Parameters:

• Header Orientation: Vertical
• Mounting Type: Through Hole
• Type: Header, Male Pins, Unshrouded

Compliance Parameters:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The identified substitute parts maintain these critical parameters. Current rating variations (12 A vs. 10 A) and housing material differences are noted but do not preclude substitution when application current requirements are within the substitute part's rating.

Parameter Comparison

Engineering Selection Recommendations

ESZH20160 (Amphenol PCD) is the primary substitute for the 2-1546931-0. This part maintains identical electrical ratings (12 A at 300 V UL), matching pitch, position count, and mechanical dimensions. Both components feature polyamide housing material and RoHS compliance. The ESZH20160 is active in production status, ensuring long-term availability. Contact material differs (copper alloy vs. brass), but both materials satisfy the electrical and mechanical requirements for this terminal block application.

A-TB500-OP20 (Assmann WSW Components) is a secondary substitute. This part meets all mechanical and dimensional requirements with identical pitch, position count, and through-hole mounting configuration. The primary consideration is the reduced current rating of 10 A compared to the original 12 A specification. This part is suitable for applications where the circuit current requirement does not exceed 10 A. The A-TB500-OP20 is active in production and ROHS3 compliant. Housing material is specified as thermoplastic, which differs from the polyamide specification of the original part.

Both substitute parts are ROHS3 compliant and maintain MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard handling and storage procedures.

Frequently Asked Questions (FAQ)

Q: Can the ESZH20160 directly replace the 2-1546931-0 in all applications?

A: The ESZH20160 maintains all critical electrical and mechanical parameters including pitch, position count, voltage rating, and current rating. Direct substitution is supported for applications requiring 12 A at 300 V with vertical through-hole mounting and solder termination.

Q: What is the significance of the current rating difference between the 2-1546931-0 (12 A) and A-TB500-OP20 (10 A)?

A: The current rating indicates the maximum continuous current the terminal block can safely conduct. The A-TB500-OP20 is suitable for applications where circuit current does not exceed 10 A. For applications requiring the full 12 A capacity, the ESZH20160 is the appropriate substitute.

Q: Are there packaging differences between the substitute parts?

A: The 2-1546931-0 is supplied in unspecified packaging. The ESZH20160 is supplied in tray packaging, and the A-TB500-OP20 is supplied in bulk packaging. Packaging differences do not affect electrical or mechanical compatibility but may influence procurement and handling procedures.

Q: How do housing material differences affect substitution?

A: The 2-1546931-0 and ESZH20160 both use polyamide (PA66) nylon 6/6 housing. The A-TB500-OP20 uses thermoplastic housing. Both material types meet UL94 V-0 flammability requirements and are suitable for the electrical and thermal operating conditions of terminal block applications. Material selection does not preclude substitution.

Q: What is the contact material difference between the substitute parts?

A: The 2-1546931-0 uses brass contacts, while the ESZH20160 uses copper alloy contacts. Both materials provide adequate electrical conductivity and corrosion resistance for terminal block applications. Contact material differences do not affect electrical performance or compatibility.

Q: Are both substitute parts RoHS compliant?

A: Yes. The ESZH20160 is RoHS compliant, and the A-TB500-OP20 is ROHS3 compliant. Both parts meet regulatory requirements for hazardous substance restrictions.

Q: What is the operating temperature range for the substitute parts?

A: The ESZH20160 operates from -40°C to 110°C. The A-TB500-OP20 operates from -40°C to 115°C. Both ranges are suitable for standard industrial and commercial applications.