FN2500156 Equivalent & Substitute Parts

Part Overview

The FN2500156 is a 25 MHz XO (Standard) CMOS oscillator manufactured by Diodes Incorporated, part of the SaRonix-eCera™ FN series. This surface mount crystal oscillator operates at 2.5V with Enable/Disable functionality and is designed for applications requiring stable frequency generation in compact form factors. The device is Active status and widely used in digital timing and synchronization circuits. Substitute parts are identified when inventory constraints, lead time requirements, or design flexibility necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

FN2500156

Diodes IncorporatedIn Stock: 855FN2500156 Datasheet

Current PartRFQ

FN2500155

Diodes IncorporatedIn Stock: 855FN2500155 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN2500156 is determined by strict alignment of the following critical parameters:

• Frequency: 25 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Supply Voltage: 2.5V (exact match required)
• Function: Enable/Disable (exact match required)
• Package Type: 4-SMD, No Lead (exact match required)
• Package Dimensions: 7.00mm x 5.00mm (exact match required)
• Maximum Seated Height: 1.80mm (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• Mounting Type: Surface Mount (exact match required)

The FN2500155 qualifies as a direct substitute based on full alignment with all critical electrical and mechanical parameters. Variance in frequency stability (±25ppm vs. ±20ppm) remains within acceptable tolerance for standard XO applications and does not preclude substitution.

Parameter Comparison

Engineering Selection Recommendations

The FN2500155 is a qualified substitute for the FN2500156 based on electrical and mechanical compatibility. Both devices maintain Active product status within the SaRonix-eCera™ FN series and carry identical RoHS3 and REACH compliance certifications. The frequency stability specification difference (±25ppm vs. ±20ppm) represents a minor tolerance variance that does not affect functional interchangeability in standard timing applications. Selection between these parts should be based on availability, packaging preference (Bulk vs. standard packaging), and inventory status rather than technical performance differentiation.

Frequently Asked Questions (FAQ)

Q: Can FN2500155 be used as a direct replacement for FN2500156 in production?

A: Yes. Both parts share identical electrical specifications, package dimensions, and mounting characteristics. The frequency stability tolerance difference does not preclude direct substitution in applications designed for the FN2500156.

Q: What is the difference between the packaging options?

A: FN2500156 is supplied in standard packaging, while FN2500155 is available in Bulk packaging. Both contain the same component; packaging selection depends on order quantity and handling requirements.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited) ratings.

Q: Does the frequency stability variance affect circuit performance?

A: Frequency stability tolerance is application-dependent. The ±25ppm specification of FN2500155 versus ±20ppm of FN2500156 represents a 5ppm difference. Verify that your application timing requirements accommodate this variance before substitution.

Q: Are the physical dimensions identical?

A: Yes. Both parts use 4-SMD, No Lead packaging with 7.00mm x 5.00mm footprint and 1.80mm maximum seated height, ensuring identical PCB layout compatibility.

Q: What is the Enable/Disable function?

A: This feature allows the oscillator output to be controlled via an external signal, reducing power consumption when the oscillator is not required. Both parts support this function identically.