FN2500121 Equivalent & Substitute Parts

Part Overview

The FN2500121 is a Clock SAW Oscillator manufactured by Diodes Incorporated, part of the SaRonix-eCera™ FN series. This component is classified as an XO (Standard) Oscillator with a crystal base resonator and SEAM7050 package configuration. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

FN2500121

Diodes IncorporatedIn Stock: 876FN2500121 Datasheet

Current PartRFQ

FN2500201

Diodes IncorporatedIn Stock: 1018FN2500201 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete FN2500121 is based on the following critical parameters:

• Oscillator Type: Both components must be XO (Standard) oscillators with crystal base resonators
• Manufacturer Continuity: Diodes Incorporated FN series components maintain design and performance consistency
• Regulatory Compliance: RoHS and REACH compliance status must be maintained or improved
• Moisture Sensitivity: MSL rating of 1 (Unlimited) ensures compatibility with standard handling and storage procedures
• Series Compatibility: SaRonix-eCera™ FN series maintains electrical and mechanical interchangeability within the product line

The FN2500201 qualifies as a direct substitute based on these parameters. It maintains the same oscillator classification, manufacturer, series designation, and regulatory compliance profile while offering active product status and specified electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The FN2500201 is the manufacturer-recommended substitute for the obsolete FN2500121. Selection of this component is justified by:

• Active Product Status: The FN2500201 maintains current production and availability, eliminating supply chain risk associated with obsolete components
• Enhanced Compliance: ROHS3 compliance represents an upgrade from the original RoHS Compliant designation, ensuring alignment with current regulatory requirements
• Maintained Certifications: REACH Unaffected and EAR99 ECCN classifications remain consistent, preserving export and regulatory compliance
• Series Continuity: Both components belong to the SaRonix-eCera™ FN series, maintaining design consistency and performance characteristics within the product family
• Equivalent Moisture Sensitivity: MSL 1 (Unlimited) rating ensures compatibility with standard component handling and storage protocols

Frequently Asked Questions (FAQ)

Q: What makes FN2500201 a suitable substitute for FN2500121?

A: The FN2500201 maintains the same oscillator type (XO Standard), base resonator technology (Crystal), manufacturer (Diodes Incorporated), and series designation (SaRonix-eCera™ FN). Both components share identical MSL ratings and REACH compliance status. The substitute offers active product status and enhanced ROHS3 compliance, addressing the obsolescence of the original component.

Q: Are there any electrical parameter differences between these components?

A: The FN2500201 includes specified electrical characteristics including 25.00125 MHz frequency, LVCMOS output, 3.3V supply voltage, and ±20ppm frequency stability. The FN2500121 specifications do not include these detailed electrical parameters in the available documentation. System integration should verify that the FN2500201 electrical specifications meet application requirements.

Q: What is the package configuration for the substitute part?

A: The FN2500201 is supplied in a 4-SMD, No Lead package with dimensions of 0.276" L x 0.071" H (7.00mm x 5.00mm x 1.80mm). Verify that this surface mount configuration is compatible with your PCB design and assembly process.

Q: Are there any compliance or certification concerns with using the substitute?

A: No. The FN2500201 maintains REACH Unaffected status and EAR99 ECCN classification identical to the original component. The upgrade to ROHS3 compliance represents an improvement over the original RoHS Compliant designation, ensuring alignment with current regulatory standards.

Q: What is the moisture sensitivity level for the substitute component?

A: The FN2500201 maintains MSL 1 (Unlimited) rating, identical to the original FN2500121. This classification permits unlimited floor life and standard handling procedures without baking requirements.