FNA000068 Equivalent & Substitute Parts

Part Overview

The FNA000068 is a 100 MHz XO (Standard) CMOS 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 and is housed in a 4-SMD, No Lead package. The device is actively produced and ROHS3 compliant, making it suitable for applications requiring stable frequency generation in compact form factors. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity.

Substiute Parts

FNA000068

Diodes IncorporatedIn Stock: 2149FNA000068 Datasheet

Current PartRFQ

FNA000072

Diodes IncorporatedIn Stock: 993FNA000072 Datasheet

MFR RecommendedRFQ

SXO75C3A481-100.000M

Suntsu Electronics, Inc.In Stock: 4828SXO75C3A481-100.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FNA000068 is determined by strict alignment of the following critical parameters:

• Frequency: 100 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Supply Voltage: 3.3V (exact match required)
• Function: Enable/Disable (exact match required)
• Package / Case: 4-SMD, No Lead (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Frequency Stability: ±50ppm (exact match required)

The substitute parts FNA000072 (Diodes Incorporated) and SXO75C3A481-100.000M (Suntsu Electronics, Inc.) meet all critical electrical and mechanical parameters. Variations in operating temperature range, current supply specifications, and physical height do not preclude substitution when the above parameters align.

Parameter Comparison

Engineering Selection Recommendations

All three parts—FNA000068, FNA000072, and SXO75C3A481-100.000M—are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

FNA000068 and SXO75C3A481-100.000M both support the full operating temperature range of -40°C ~ 85°C, making them suitable for applications requiring extended thermal performance. FNA000072 operates within a narrower range (-20°C ~ 70°C) and should be selected only when application requirements align with this constraint.

Current supply specifications vary: FNA000068 and FNA000072 both draw a maximum of 55mA, while SXO75C3A481-100.000M draws up to 65mA. Design power budgets must account for this difference when selecting the Suntsu part.

Physical height differs between FNA000068/FNA000072 (1.80mm) and SXO75C3A481-100.000M (1.60mm). PCB layout clearance and component stacking considerations should be evaluated during substitution.

Frequently Asked Questions (FAQ)

Q: Can FNA000072 be used as a direct replacement for FNA000068?

A: FNA000072 is electrically compatible with FNA000068 across all critical parameters (frequency, output type, supply voltage, function, and package). However, FNA000072 operates within a narrower temperature range (-20°C ~ 70°C versus -40°C ~ 85°C). Substitution is valid only if the application does not require the extended low-temperature or high-temperature performance of the main part.

Q: What are the key differences between the Diodes Incorporated and Suntsu Electronics parts?

A: Both manufacturers provide 100 MHz CMOS oscillators in identical 4-SMD, No Lead packages with matching electrical specifications. The primary differences are: (1) maximum supply current (55mA for Diodes versus 65mA for Suntsu), (2) physical height (1.80mm for Diodes versus 1.60mm for Suntsu), and (3) manufacturer series designation (SaRonix-eCera™ FN versus SXO75C). All three parts meet ROHS3 compliance.

Q: Are there any package compatibility concerns when substituting these parts?

A: All three parts use identical 4-SMD, No Lead packages with the same footprint dimensions (7.00mm x 5.00mm). The height variation (1.80mm versus 1.60mm) does not affect PCB footprint compatibility but may impact component clearance in space-constrained designs. Verify PCB layout clearance before substitution.

Q: Which part should be selected for applications requiring the widest operating temperature range?

A: Both FNA000068 and SXO75C3A481-100.000M support -40°C ~ 85°C operation. FNA000072 is limited to -20°C ~ 70°C and is not suitable for applications requiring extended temperature performance.

Q: Are all three parts currently in stock?

A: Inventory status is subject to change. FNA000068 has 2071 units, FNA000072 has 927 units, and SXO75C3A481-100.000M has 4733 units listed as new original stock. Verify current availability with your supplier.