FN2400045 Equivalent & Substitute Parts

Part Overview

The FN2400045 is a 24 MHz crystal oscillator manufactured by Diodes Incorporated, part of the SaRonix-eCera™ FN series. This CMOS oscillator operates at 3.3V with Enable/Disable functionality in a 4-SMD, No Lead surface mount package. The device is actively produced and ROHS3 compliant, making it suitable for applications requiring stable frequency generation with low power consumption in disabled mode.

Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and operational parameters that ensure functional interchangeability within the same application circuit.

Key Parameters

Parameter	Value
Frequency	24 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±50ppm
Operating Temperature Range	-40°C ~ 85°C
Package Type	4-SMD, No Lead
Package Dimensions	7.00mm x 5.00mm
Maximum Height	1.80mm
Maximum Supply Current	15mA
Disable Mode Current	10µA
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the FN2400045 are qualified based on the following critical parameters:

Frequency Match: 24 MHz (exact)
Output Configuration: CMOS
Supply Voltage: 3.3V
Frequency Stability: ±50ppm
Package Type: 4-SMD, No Lead
Package Dimensions: 7.00mm x 5.00mm
Enable/Disable Function: Present
RoHS Compliance: ROHS3 Compliant

The FN2400046 (Diodes Incorporated) and SXO75C3A481-24.000M (Suntsu Electronics) meet these core electrical and mechanical requirements. Variations in operating temperature range, maximum supply current, and seated height do not preclude substitution when the application circuit design accommodates these differences.

Parameter Comparison

Parameter	FN2400045	FN2400046	SXO75C3A481-24.000M
Manufacturer	Diodes Incorporated	Diodes Incorporated	Suntsu Electronics, Inc.
Frequency	24 MHz	24 MHz	24 MHz
Output Type	CMOS	CMOS	CMOS
Supply Voltage	3.3V	3.3V	3.3V
Function	Enable/Disable	Enable/Disable	Enable/Disable
Frequency Stability	±50ppm	±50ppm	±50ppm
Operating Temperature	-40°C ~ 85°C	-20°C ~ 70°C	-40°C ~ 85°C
Maximum Supply Current	15mA	15mA	16mA
Package Type	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Package Dimensions	7.00mm x 5.00mm	7.00mm x 5.00mm	7.00mm x 5.00mm
Maximum Height	1.80mm	1.80mm	1.60mm
Disable Mode Current	10µA	10µA	Not specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—FN2400045, FN2400046, and SXO75C3A481-24.000M—are actively produced and ROHS3 compliant, meeting regulatory requirements for current applications.

FN2400045 and FN2400046 are both manufactured by Diodes Incorporated and share identical electrical specifications. The FN2400046 operates within a narrower temperature range (-20°C ~ 70°C) compared to the FN2400045 (-40°C ~ 85°C). Selection between these two should be based on the application's required operating temperature envelope.

SXO75C3A481-24.000M (Suntsu Electronics) provides an alternative from a different manufacturer with matching core electrical parameters and the same operating temperature range as the FN2400045. The maximum supply current is 16mA versus 15mA for the Diodes parts, and the seated height is 1.60mm versus 1.80mm. These differences are within acceptable tolerances for standard PCB layout and do not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can FN2400046 replace FN2400045 in all applications?

A: FN2400046 is electrically equivalent but operates within -20°C ~ 70°C. If your application requires operation below -20°C or above 70°C, FN2400045 (-40°C ~ 85°C) is required.

Q: Is SXO75C3A481-24.000M a direct substitute?

A: Yes. SXO75C3A481-24.000M matches all critical electrical parameters and package dimensions. The 1mA higher maximum supply current and 0.2mm lower seated height do not affect functional interchangeability in standard circuit designs.

Q: Do all three parts use the same pinout?

A: All three parts use the 4-SMD, No Lead package configuration with identical 7.00mm x 5.00mm dimensions, ensuring PCB footprint compatibility.

Q: What is the significance of the ±50ppm frequency stability specification?

A: Frequency stability of ±50ppm indicates the maximum frequency deviation over the operating temperature range and supply voltage variations. All three parts meet this specification, ensuring equivalent timing accuracy.

Q: Are there differences in moisture sensitivity?

A: FN2400045 and FN2400046 specify MSL 1 (Unlimited). SXO75C3A481-24.000M does not specify MSL in the provided data. Standard handling practices for surface mount oscillators apply to all parts.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes, all three parts share identical package dimensions (7.00mm x 5.00mm) and 4-SMD, No Lead configuration, allowing direct PCB footprint compatibility and assembly line interchangeability.

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