FD2500053 Crystal Oscillator 25 MHz CMOS Equivalent & Substitute Parts

Part Overview

The FD2500053 is a 25 MHz XO (Standard) CMOS crystal oscillator manufactured by Diodes Incorporated as part of the SaRonix-eCera™ FD series. This surface mount oscillator operates at 3.3V with Enable/Disable functionality and is housed in a 4-SMD, No Lead package. The part is Active status and ROHS3 compliant, making it suitable for modern electronic applications requiring precision frequency generation.

Substitute parts become necessary due to inventory constraints, extended lead times, or specific performance requirements within the allowed electrical and mechanical parameter ranges for this oscillator category.

Key Parameters

Parameter	FD2500053 Specification
Frequency	25 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±20ppm
Operating Temperature Range	-20°C ~ 70°C
Maximum Supply Current	15mA
Disable Mode Current	10µA
Package Type	4-SMD, No Lead
Package Dimensions	5.00mm x 3.20mm x 1.30mm (max height)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the FD2500053 is determined by strict equivalence across the following critical parameters:

Fixed Parameters (Must Match Exactly):

Frequency: 25 MHz
Output Type: CMOS
Supply Voltage: 3.3V
Function: Enable/Disable
Package Type: 4-SMD, No Lead
Package Dimensions: 5.00mm x 3.20mm
Maximum Height: 1.30mm
Maximum Supply Current: 15mA
Disable Mode Current: 10µA
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: MSL 1

Variable Parameters (Allowed Variation):

Frequency Stability: ±20ppm to ±50ppm
Operating Temperature Range: -20°C ~ 70°C or -40°C ~ 85°C

The three qualified substitute parts (FD2500054, FD2500061, FD2500063) maintain all fixed parameters while offering different frequency stability and operating temperature specifications. Selection depends on application-specific thermal and stability requirements.

Parameter Comparison

Parameter	FD2500053	FD2500054	FD2500061	FD2500063
Manufacturer	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated	Diodes Incorporated
Series	SaRonix-eCera™ FD	SaRonix-eCera™ FD	SaRonix-eCera™ FD	SaRonix-eCera™ FD
Frequency	25 MHz	25 MHz	25 MHz	25 MHz
Output Type	CMOS	CMOS	CMOS	CMOS
Supply Voltage	3.3V	3.3V	3.3V	3.3V
Function	Enable/Disable	Enable/Disable	Enable/Disable	Enable/Disable
Frequency Stability	±20ppm	±50ppm	±25ppm	±25ppm
Operating Temperature	-20°C ~ 70°C	-40°C ~ 85°C	-20°C ~ 70°C	-40°C ~ 85°C
Maximum Supply Current	15mA	15mA	15mA	15mA
Disable Mode Current	10µA	10µA	10µA	10µA
Package Type	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Package Dimensions	5.00mm x 3.20mm	5.00mm x 3.20mm	5.00mm x 3.20mm	5.00mm x 3.20mm
Maximum Height	1.30mm	1.30mm	1.30mm	1.30mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1	MSL 1	MSL 1	MSL 1
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All four parts (FD2500053, FD2500054, FD2500061, FD2500063) are Active status products from Diodes Incorporated with identical ROHS3 compliance and MSL 1 ratings, ensuring regulatory and environmental compatibility across the entire group.

FD2500053 offers the tightest frequency stability at ±20ppm within the -20°C ~ 70°C operating range. Select this part for applications requiring superior frequency accuracy in standard temperature environments.

FD2500054 provides the widest operating temperature range (-40°C ~ 85°C) with ±50ppm frequency stability. This part accommodates extended thermal environments at the cost of reduced frequency precision.

FD2500061 balances frequency stability (±25ppm) with standard temperature range (-20°C ~ 70°C), offering a middle-ground option for applications not requiring extreme temperature operation.

FD2500063 combines ±25ppm frequency stability with extended temperature range (-40°C ~ 85°C), suitable for applications requiring both thermal robustness and moderate frequency accuracy.

Frequently Asked Questions (FAQ)

Q: Can FD2500054 replace FD2500053 in all applications?

A: FD2500054 is mechanically and electrically compatible but operates across a wider temperature range (-40°C ~ 85°C versus -20°C ~ 70°C) with reduced frequency stability (±50ppm versus ±20ppm). Substitution is valid only if the application tolerates ±50ppm frequency deviation and does not require the tighter ±20ppm specification of the original part.

Q: What is the difference between FD2500061 and FD2500063?

A: Both parts share ±25ppm frequency stability. FD2500061 operates within -20°C ~ 70°C, while FD2500063 extends to -40°C ~ 85°C. Select FD2500063 for applications requiring operation below -20°C or above 70°C.

Q: Are all substitute parts pin-compatible with FD2500053?

A: Yes. All parts use identical 4-SMD, No Lead packaging with 5.00mm x 3.20mm footprint and 1.30mm maximum height, ensuring direct PCB layout compatibility.

Q: Do frequency stability differences affect PCB design?

A: Frequency stability affects circuit performance but not PCB layout. All parts maintain identical package dimensions and pinout. Circuit design must accommodate the selected part's frequency stability specification.

Q: Are there inventory or lead time considerations?

A: FD2500054 has the highest inventory (1672 pcs), followed by FD2500063 (937 pcs), FD2500061 (705 pcs), and FD2500053 (790 pcs). Availability may influence substitution decisions when rapid procurement is required.

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