FN5000138 Equivalent & Substitute Parts

Part Overview

The FN5000138 is a 50 MHz XO (Standard) LVCMOS oscillator manufactured by Diodes Incorporated, part of the SaRonix-eCera™ FN series. This surface mount crystal oscillator operates at 3.3V with enable/disable functionality, housed in a 4-SMD, No Lead package measuring 7.00mm x 5.00mm. The device is designed for applications requiring stable 50 MHz clock generation with low voltage CMOS output levels. As an active product with ROHS3 compliance and unlimited moisture sensitivity rating, substitute parts may be required due to inventory availability, lead time constraints, or design optimization needs.

Substiute Parts

FN5000138

Diodes IncorporatedIn Stock: 711FN5000138 Datasheet

Current PartRFQ

FN5000145

Diodes IncorporatedIn Stock: 1525FN5000145 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FN5000138 is determined by strict equivalence across the following critical parameters:

• Frequency: 50 MHz (exact match required)
• Output Type: LVCMOS (exact match required)
• Supply Voltage: 3.3V (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)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Frequency Stability: ±50ppm (exact match required)

The FN5000145 meets all substitution criteria as a parametric equivalent within the SaRonix-eCera™ FN series. Both parts share identical electrical specifications, package geometry, and environmental ratings. Variations in maximum supply current (20mA vs. 25mA) and disable mode current do not affect functional compatibility in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Both FN5000138 and FN5000145 are active products with identical regulatory compliance profiles. Selection between these parts should be based on availability and lead time requirements. The FN5000145 carries higher inventory levels (1469 pcs vs. 669 pcs), making it suitable for applications where supply chain continuity is a priority. The maximum supply current specification of FN5000145 (25mA) provides additional margin compared to FN5000138 (20mA), though both operate within standard LVCMOS current budgets for typical applications. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity ratings, ensuring equivalent environmental and regulatory performance.

Frequently Asked Questions (FAQ)

Q: Can FN5000145 be used as a direct replacement for FN5000138?

A: Yes. FN5000145 is a parametric equivalent meeting all critical electrical and mechanical specifications. Pin configuration, package footprint, and functional behavior are identical.

Q: Are there differences in frequency stability between these parts?

A: No. Both parts specify ±50ppm frequency stability across the -40°C ~ 85°C operating range.

Q: What is the significance of the different maximum supply current ratings?

A: FN5000138 specifies 20mA maximum supply current, while FN5000145 specifies 25mA. This difference does not affect compatibility. The higher rating on FN5000145 provides additional design margin but does not change typical operating current in standard applications.

Q: Are the packages physically identical?

A: Yes. Both parts use 4-SMD, No Lead packages with identical dimensions (7.00mm x 5.00mm) and maximum seated height (1.80mm). PCB footprints and reflow profiles are interchangeable.

Q: Do these parts have the same compliance certifications?

A: Yes. Both FN5000138 and FN5000145 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS codes.

Q: Is there a performance difference in enable/disable functionality?

A: No. Both parts implement identical enable/disable functionality with matching disable mode current specifications (10µA maximum).