TE Connectivity AMP Connectors 4-521755-2 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 4-521755-2 is a rectangular connector header designed for through-hole mounting applications. This connector features a vertical orientation with 2 positions at 5.00mm pitch, shrouded 4-wall construction, and solder termination. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

4-521755-2

TE Connectivity AMP ConnectorsIn Stock: 10464-521755-2 Datasheet

Current PartRFQ

1971846-2

TE Connectivity AMP ConnectorsIn Stock: 13611971846-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4-521755-2 with the TE Connectivity AMP Connectors 1971846-2 is based on electrical and mechanical parameter equivalence. Both connectors share identical specifications for the following critical parameters: 2-position configuration, 5.00mm mating pitch, through-hole mounting, shrouded 4-wall design, solder termination, 250VAC voltage rating, -40°C to 120°C operating temperature range, and UL94 V-0 flammability rating. Both parts are ROHS3 compliant and maintain the same connector type (header) and contact shape (rectangular). The primary distinction is product status: the 4-521755-2 is obsolete while the 1971846-2 is active, making the latter the appropriate long-term substitute for new designs and ongoing production requirements.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity AMP Connectors 1971846-2 is the direct substitute for the obsolete 4-521755-2. Both connectors meet identical electrical and mechanical specifications, including voltage rating, operating temperature range, and flammability certification. The 1971846-2 maintains active product status with current manufacturing support and availability. Both parts are ROHS3 compliant and carry the same ECCN and HTSUS classifications, ensuring regulatory equivalence. The 1971846-2 is packaged in tube format and includes glow wire compliance certification as an additional feature. For applications currently using the 4-521755-2, direct substitution with the 1971846-2 is supported without design modification.

Frequently Asked Questions (FAQ)

Q: Can the 1971846-2 be used as a direct replacement for the 4-521755-2?

A: Yes. Both connectors share identical electrical and mechanical parameters including 2-position configuration, 5.00mm pitch, through-hole mounting, shrouded 4-wall design, solder termination, 250VAC voltage rating, and -40°C to 120°C operating temperature range. Direct substitution is supported.

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

A: The 4-521755-2 is classified as obsolete, while the 1971846-2 is active. The 1971846-2 includes glow wire compliance certification and is packaged in tube format. Contact material differs slightly: the 4-521755-2 uses brass while the 1971846-2 uses copper alloy.

Q: Are both connectors RoHS compliant?

A: Yes. Both the 4-521755-2 and 1971846-2 are ROHS3 compliant.

Q: What is the moisture sensitivity level for these connectors?

A: Both connectors have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without special storage requirements.

Q: Are there any packaging differences between these parts?

A: The 1971846-2 is supplied in tube packaging, while packaging information for the 4-521755-2 is not specified in the available data.

Q: Do both connectors support the same voltage and temperature specifications?

A: Yes. Both connectors are rated for 250VAC and operate across the -40°C to 120°C temperature range.

Q: What is the current rating for the 1971846-2?

A: The 1971846-2 is rated for 20A. Current rating information for the 4-521755-2 is not provided in the available data.