Amphenol ICC 91901-31421 Rectangular Connector Header – Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 91901-31421 is a 21-position connector header with center strip contacts designed for surface mount applications. This part features gold-plated contacts and solder retention, operating with a 0.039" (1.00mm) pitch across 2 rows. The main part number is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications requiring this connector configuration.

Substiute Parts

91901-31421

Amphenol ICC (FCI)In Stock: 106891901-31421 Datasheet

Current PartRFQ

91901-31421LF

Amphenol ICC (FCI)In Stock: 119791901-31421LF Datasheet

DirectRFQ

91900-31421LF

Amphenol ICC (FCI)In Stock: 81091900-31421LF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 91901-31421 is based on matching the following critical parameters: 21-position count, 0.039" (1.00mm) pitch, 2-row configuration, surface mount mounting type, gold contact finish at 15.0µin thickness, 6mm mated stacking height, and solder retention feature. All substitute parts maintain identical electrical and mechanical specifications within these parameters.

The substitute parts are grouped into two categories:

Direct Manufacturer Substitute (91901-31421LF): Identical base product number (91901) with lead-free designation (LF suffix). This part maintains all electrical and mechanical parameters while offering improved compliance status.

Parametric Equivalent (91900-31421LF): Different base product number (91900) but functionally equivalent across all specified electrical and mechanical parameters. This part also includes lead-free designation and compliance improvements.

Parameter Comparison

Engineering Selection Recommendations

For new designs and active production: Use 91901-31421LF. This part is the direct manufacturer substitute with identical base product number, active product status, and RoHS compliance. It provides the most direct replacement path with full regulatory compliance.

For parametric equivalence across different product lines: Use 91900-31421LF. This part maintains all specified electrical and mechanical parameters while offering active product status and RoHS compliance. The different base product number reflects a different product line within the Conan™ and MezzSelect™ series, but functional compatibility is assured through parameter matching.

Obsolescence consideration: The main part 91901-31421 is obsolete. Both substitute parts are active and available in production quantities, making either suitable for component sourcing strategies.

Frequently Asked Questions (FAQ)

Q: Can 91901-31421LF directly replace 91901-31421 in existing designs?

A: Yes. The 91901-31421LF maintains all electrical and mechanical parameters specified for the main part, including position count, pitch, mounting type, contact finish, and stacking heights. The LF suffix indicates lead-free compliance, which is a manufacturing process change that does not affect functional compatibility.

Q: What is the difference between 91901-31421LF and 91900-31421LF?

A: Both parts are parametrically equivalent across all specified electrical and mechanical parameters. The difference lies in the base product number (91901 versus 91900), indicating they belong to different product lines within Amphenol ICC's connector portfolio. Functional compatibility is assured through matching all critical parameters: 21 positions, 0.039" pitch, 2 rows, surface mount configuration, gold contact finish, and solder retention.

Q: Are there packaging differences between the substitute parts?

A: Both substitute parts are supplied in Tape & Reel (TR) packaging. The main part packaging specification was not provided in the technical data.

Q: Do the substitute parts meet the same compliance requirements?

A: Both substitute parts are RoHS Compliant and carry the same ECCN (EAR99) and HTSUS (8536.69.4040) classifications as the main part. The main part is RoHS non-compliant, making the substitutes suitable for applications requiring regulatory compliance.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All parts, including the main part and both substitutes, have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.