Amphenol ICC 91910-21521 Rectangular Connector Header – Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 91910-21521 is a 21-position connector header with center strip contacts designed for surface mount applications. This component features gold-plated contacts and is part of the Conan™ and MezzSelect™ series. The main part number (91910-21521) is classified as obsolete, which necessitates identification of active equivalent alternatives to ensure continued design support and procurement availability.

Substiute Parts

91910-21521

Amphenol ICC (FCI)In Stock: 71991910-21521 Datasheet

Current PartRFQ

91910-21521LF

Amphenol ICC (FCI)In Stock: 82091910-21521LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 91910-21521 with active alternatives is determined by strict equivalence across all electrical and mechanical parameters. The substitute part 91910-21521LF maintains identical specifications for connector type, position count, pitch, row configuration, mounting method, contact finish type and thickness, stacking height, and board height. Both parts share the same base product number (91910) and series designation, confirming functional interchangeability.

The primary differentiator between the main part and its substitute is product status and RoHS compliance. The substitute part (91910-21521LF) is active and RoHS compliant, whereas the original part is obsolete and RoHS non-compliant. Packaging differs between the two: the original uses standard packaging while the substitute is supplied in tube packaging.

Parameter Comparison

Engineering Selection Recommendations

The 91910-21521LF is the direct active equivalent for the obsolete 91910-21521. Selection of the substitute part is justified on the following basis:

Electrical and mechanical parameters are identical across all critical dimensions and contact specifications, ensuring pin-for-pin and footprint compatibility. The substitute part maintains the same 21-position, 1.00mm pitch configuration with identical surface mount characteristics and gold contact finish specifications.

The 91910-21521LF carries active product status, ensuring ongoing manufacturer support and procurement availability. The part is RoHS compliant, meeting current environmental and regulatory requirements for new designs and manufacturing processes. Both parts share identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications, confirming equivalent trade and export compliance status.

Frequently Asked Questions (FAQ)

Q: Can the 91910-21521LF be used as a direct replacement for the obsolete 91910-21521?

A: Yes. The 91910-21521LF is electrically and mechanically equivalent to the 91910-21521. All connector specifications, including position count, pitch, mounting type, contact finish, and board dimensions, are identical. The parts are interchangeable at the PCB footprint and mating interface level.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and RoHS compliance. The 91910-21521 is obsolete and RoHS non-compliant. The 91910-21521LF is active and RoHS compliant. Packaging also differs: the substitute is supplied in tube format. All electrical and mechanical specifications remain identical.

Q: Does the tube packaging of the 91910-21521LF affect compatibility?

A: No. Packaging format does not affect component functionality or PCB compatibility. Tube packaging is a standard supply format that does not alter the connector's electrical or mechanical properties. The component itself remains identical regardless of packaging method.

Q: Are there any compliance or certification differences between these parts?

A: Both parts share identical ECCN and HTSUS classifications. The key compliance difference is RoHS status: the 91910-21521LF is RoHS compliant, while the original part is not. Both parts maintain MSL 1 (Unlimited) moisture sensitivity rating and are REACH unaffected.

Q: Can existing designs using 91910-21521 be updated to use 91910-21521LF?

A: Yes. The identical electrical and mechanical specifications allow direct substitution in existing designs. No PCB layout modifications, schematic changes, or design re-qualification are required. The 91910-21521LF can be implemented as a drop-in replacement.