Amphenol ICC 91900-21541 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 91900-21541 is a 41-position connector header with center strip contacts designed for surface mount applications. This component features gold-plated contacts and solder retention capabilities, operating at a 0.039" (1.00mm) pitch across 2 rows. The part is currently classified as obsolete, making identification of suitable substitutes essential for ongoing design support and component procurement.

Substiute Parts

91900-21541

Amphenol ICC (FCI)In Stock: 72991900-21541 Datasheet

Current PartRFQ

91900-21541LF

Amphenol ICC (FCI)In Stock: 66691900-21541LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 91900-21541LF qualifies as a direct substitute based on identical electrical and mechanical parameters. Substitution eligibility is determined by the following critical parameters:

• Connector type and contact configuration (Header, Center Strip Contacts)
• Position count (41 positions)
• Pitch specification (0.039" / 1.00mm)
• Row configuration (2 rows)
• Mounting technology (Surface Mount)
• Contact finish material and thickness (Gold or Gold, GXT™ at 15.0µin)
• Physical dimensions (7mm mated stacking height, 0.147" height above board)
• Solder retention feature presence

The 91900-21541LF maintains all these parameters identically to the main part, establishing full functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 91900-21541LF is the appropriate substitute for the obsolete 91900-21541. Selection is based on the following factors:

• All electrical and mechanical parameters are identical, ensuring direct functional compatibility
• The substitute maintains active product status, providing ongoing availability and supply chain continuity
• The 91900-21541LF achieves RoHS compliance, whereas the original part is RoHS non-compliant
• The substitute is supplied in standard tube packaging, facilitating procurement and handling
• Both parts share the same base product number (91900) and series designation (Conan™, MezzSelect™)

Frequently Asked Questions (FAQ)

Q: Can the 91900-21541LF be used as a direct replacement for the 91900-21541?

A: Yes. The 91900-21541LF is electrically and mechanically identical to the 91900-21541 across all specified parameters, including position count, pitch, mounting type, contact finish, and physical dimensions.

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

A: The 91900-21541LF is the active production variant with RoHS compliance, while the 91900-21541 is obsolete and RoHS non-compliant. The "LF" designation indicates lead-free compliance.

Q: Are there any packaging differences?

A: The 91900-21541LF is supplied in tube packaging. The original part's packaging specification was not provided in the technical data.

Q: Will the 91900-21541LF work in existing PCB designs for the 91900-21541?

A: Yes. Identical pitch, row configuration, mounting type, and physical dimensions ensure full compatibility with existing PCB layouts and assembly processes.

Q: What certifications apply to the substitute part?

A: The 91900-21541LF is RoHS compliant and REACH affected. Both parts carry EAR99 export classification and the same HTSUS code (8536.69.4040).