FDC500024 Equivalent & Substitute Parts

Part Overview

The FDC500024 is a 125 MHz XO (Standard) CMOS Oscillator manufactured by Diodes Incorporated, designed for applications requiring a crystal-based frequency reference with enable/disable functionality. Operating at 3.3V with ±50ppm frequency stability, this surface-mount component delivers 45mA maximum supply current and maintains performance across -20°C to 70°C. The part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable.

Substiute Parts

FDC500024

Diodes IncorporatedIn Stock: 1138FDC500024 Datasheet

Current PartRFQ

FDC500020

Diodes IncorporatedIn Stock: 875FDC500020 Datasheet

MFR RecommendedRFQ

SXO53C3A271-125.000M

Suntsu Electronics, Inc.In Stock: 1761SXO53C3A271-125.000M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FDC500024 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Core Electrical Parameters:

• Frequency: 125 MHz (exact match required)
• Output Type: CMOS (exact match required)
• Supply Voltage: 3.3V (exact match required)
• Function: Enable/Disable (exact match required)
• Frequency Stability: ±50ppm (exact match required)

Mechanical Parameters:

• Package / Case: 4-SMD, No Lead (exact match required)
• Size / Dimension: 0.197" L x 0.126" W (5.00mm x 3.20mm) (exact match required)

Operational Parameters:

• Current - Supply (Max): 45mA or lower (substitutes must not exceed this value)
• Current - Supply (Disable) (Max): 10µA or lower (substitutes must not exceed this value)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (required)
• Moisture Sensitivity Level (MSL): 1 (Unlimited) (required)

Substitutes may differ in operating temperature range, height tolerance, and supply current within specified limits without affecting circuit functionality.

Parameter Comparison

Engineering Selection Recommendations

FDC500020 (Diodes Incorporated): This part is the manufacturer-recommended substitute from Diodes Incorporated. It maintains identical electrical specifications and package dimensions to the FDC500024. The extended operating temperature range (-40°C ~ 85°C) provides broader environmental coverage compared to the main part. Both parts carry ROHS3 compliance and MSL 1 rating. Selection of FDC500020 is appropriate for applications where extended temperature performance is beneficial or when maintaining single-manufacturer sourcing is preferred.

SXO53C3A271-125.000M (Suntsu Electronics, Inc.): This part provides cross-manufacturer substitution with matching core electrical parameters and identical package footprint. The maximum supply current specification of 50mA exceeds the FDC500024 limit of 45mA; this difference must be evaluated against circuit power budget constraints. Height tolerance is 0.055" (1.40mm) versus 0.051" (1.30mm) for the main part; clearance verification is required for applications with tight vertical constraints. ROHS3 compliance is confirmed. Selection of SXO53C3A271-125.000M is appropriate for multi-source procurement strategies and when the higher supply current specification does not conflict with design requirements.

Frequently Asked Questions (FAQ)

Q: Can FDC500020 be used as a direct replacement for FDC500024? A: Yes. FDC500020 is electrically and mechanically compatible. Both parts share identical frequency, output type, supply voltage, function, frequency stability, package type, and dimensions. FDC500020 offers an extended operating temperature range of -40°C ~ 85°C compared to FDC500024's -20°C ~ 70°C.

Q: What are the key differences between FDC500024 and SXO53C3A271-125.000M? A: Both parts meet the core electrical requirements: 125 MHz frequency, CMOS output, 3.3V supply, enable/disable function, and ±50ppm stability. Differences include: (1) SXO53C3A271-125.000M has a maximum supply current of 50mA versus 45mA for FDC500024; (2) SXO53C3A271-125.000M seated height is 0.055" (1.40mm) versus 0.051" (1.30mm) for FDC500024; (3) SXO53C3A271-125.000M disable current specification is not provided.

Q: Are all substitute parts ROHS3 compliant? A: Yes. FDC500024, FDC500020, and SXO53C3A271-125.000M are all ROHS3 compliant.

Q: Does the 0.004" (0.10mm) height difference between FDC500024 and SXO53C3A271-125.000M affect PCB assembly? A: The height difference must be evaluated against specific PCB design constraints. If the application has tight vertical clearance requirements or uses automated pick-and-place equipment with height-sensitive settings, this difference should be verified with assembly documentation and equipment specifications.

Q: Can SXO53C3A271-125.000M be used in applications designed for 45mA maximum supply current? A: SXO53C3A271-125.000M has a maximum supply current specification of 50mA. Circuit power budget analysis is required to determine if the higher specification creates conflicts with design constraints. If the circuit is designed with 45mA as the maximum allowable current, substitution requires verification that actual operating current remains within acceptable limits.

Q: What is the moisture sensitivity level for all substitute parts? A: FDC500024 and FDC500020 both specify MSL 1 (Unlimited). SXO53C3A271-125.000M does not provide MSL specification in the available data.