Amphenol ICC 91910-21151 51-Position Rectangular Connector Header

Part Overview

The Amphenol ICC 91910-21151 is a 51-position connector header with center strip contacts designed for surface mount applications. This part features gold-plated contacts and board guide retention, making it suitable for high-density interconnect applications requiring reliable mating cycles.

The 91910-21151 carries an obsolete product status. Locating equivalent or substitute components is necessary to maintain design continuity and ensure procurement availability for new production runs or field replacements.

Substiute Parts

91910-21151

Amphenol ICC (FCI)In Stock: 82691910-21151 Datasheet

Current PartRFQ

91910-21151LF

Amphenol ICC (FCI)In Stock: 298091910-21151LF Datasheet

DirectRFQ

91911-21151LF

Amphenol ICC (FCI)In Stock: 89091911-21151LF Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 91910-21151 is determined by strict equivalence across the following critical parameters:

• Connector type and contact configuration (Header, Center Strip Contacts)
• Position count (51 positions)
• Contact pitch (0.039" / 1.00mm)
• Row configuration (2 rows)
• Surface mount mounting type
• Contact finish specification (Gold or Gold, GXT™)
• Contact finish thickness (15.0µin / 0.38µm)
• Mated stacking height (4.15mm)
• Height above board (0.034" / 0.86mm)
• Mechanical features (Board Guide, Solder Retention)

Two substitute parts meet these criteria: 91910-21151LF (direct manufacturer equivalent) and 91911-21151LF (parametric equivalent with alternate base product number).

Parameter Comparison

Engineering Selection Recommendations

The 91910-21151 is classified as obsolete. Both substitute parts—91910-21151LF and 91911-21151LF—are active products with identical electrical and mechanical parameters.

91910-21151LF is the direct manufacturer equivalent, maintaining the same base product number (91910) while adding the "LF" suffix indicating lead-free compliance. This part is RoHS Compliant and REACH Affected, with 2925 units in stock.

91911-21151LF is a parametric equivalent with an alternate base product number (91911) but identical functional specifications. This part is also RoHS Compliant and REACH Affected, with 810 units in stock.

Both substitutes are functionally interchangeable with the obsolete 91910-21151 across all critical electrical and mechanical parameters. Selection between them should be based on procurement availability, packaging requirements (both supplied in Tube packaging), and inventory levels.

Frequently Asked Questions (FAQ)

Q: Can 91910-21151LF directly replace 91910-21151 in existing designs?

A: Yes. The 91910-21151LF maintains identical electrical and mechanical specifications including position count, pitch, contact finish, stacking height, and mounting configuration. The primary difference is RoHS compliance status and product status (Active vs. Obsolete).

Q: What is the difference between 91910-21151LF and 91911-21151LF?

A: Both parts are parametric equivalents with identical connector specifications. The difference lies in the base product number (91910 vs. 91911). All electrical and mechanical parameters, including position count, pitch, contact finish thickness, and stacking height, are identical. Selection should be based on availability and procurement preference.

Q: Are there packaging differences between the substitute parts?

A: Both 91910-21151LF and 91911-21151LF are supplied in Tube packaging. No alternative packaging options are specified for these substitutes.

Q: Does the "LF" designation affect compatibility?

A: The "LF" suffix indicates lead-free manufacturing compliance. This designation does not affect electrical or mechanical compatibility. Both LF and non-LF versions maintain identical connector specifications and are mechanically and electrically interchangeable.

Q: What compliance certifications apply to the substitute parts?

A: Both 91910-21151LF and 91911-21151LF are RoHS Compliant and REACH Affected. The original 91910-21151 is RoHS non-compliant and REACH Unaffected. Designs requiring RoHS compliance must use one of the substitute parts.