Amphenol ICC 91911-31521 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 91911-31521 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 is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and design requirements.

Substiute Parts

91911-31521

Amphenol ICC (FCI)In Stock: 197291911-31521 Datasheet

Current PartRFQ

91911-31521LF

Amphenol ICC (FCI)In Stock: 218891911-31521LF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 91911-31521 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain identical specifications for connector type, position count, pitch, row configuration, mounting method, contact finish, and physical dimensions. The 91911-31521LF qualifies as a parametric equivalent because it preserves all these critical parameters while offering improved compliance status and active product availability.

Key Parameters for Substitution:

• 21-position configuration with 2-row layout
• 0.039" (1.00mm) pitch spacing
• Surface mount technology
• Gold contact finish at 15.0µin thickness
• 7mm mated stacking height and 0.147" height above board
• Board guide and solder retention features

Parameter Comparison

Engineering Selection Recommendations

The 91911-31521LF serves as the direct parametric equivalent for the obsolete 91911-31521. Selection between these parts should be based on compliance and product lifecycle requirements. The 91911-31521LF offers RoHS compliance and active product status, making it suitable for new designs and applications requiring regulatory adherence. The main part remains available in inventory but carries obsolete status and RoHS non-compliance designation. For applications with existing RoHS non-compliant requirements or legacy system maintenance, the 91911-31521 may be retained; however, the 91911-31521LF is the preferred choice for forward-compatible implementations. Both parts maintain identical electrical and mechanical specifications, ensuring direct interchangeability at the board level.

Frequently Asked Questions (FAQ)

Q: Are the 91911-31521 and 91911-31521LF electrically and mechanically interchangeable?

A: Yes. Both parts maintain identical specifications across all critical parameters: 21-position configuration, 0.039" pitch, 2-row layout, surface mount technology, gold contact finish at 15.0µin thickness, and physical dimensions including 7mm mated stacking height and 0.147" height above board.

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

A: The 91911-31521LF is the active production variant with RoHS compliance and Tape & Reel packaging, while the 91911-31521 is classified as obsolete with RoHS non-compliance and bulk packaging. All functional and dimensional specifications remain identical.

Q: Can the 91911-31521LF be used as a direct replacement in existing designs using the 91911-31521?

A: Yes, the 91911-31521LF provides direct substitution without design modifications. The identical electrical and mechanical parameters ensure compatibility at the board level and in mating applications.

Q: What packaging formats are available?

A: The 91911-31521 is supplied in bulk packaging, while the 91911-31521LF is available in Tape & Reel (TR) format, which is standard for automated assembly processes.

Q: Are there compliance differences between these parts?

A: Yes. The 91911-31521LF is RoHS Compliant and REACH Affected, while the 91911-31521 is RoHS non-compliant and REACH Unaffected. For applications requiring regulatory compliance, the 91911-31521LF is the appropriate selection.