CD42FD203FO3F Mica Capacitor - Equivalent & Substitute Parts

Part Overview

The CD42FD203FO3F is a 0.02 µF mica capacitor rated for 500 V operation, manufactured by Cornell Dubilier Electronics (CDE). This radial through-hole component is designed for general-purpose applications requiring high voltage performance and excellent stability across the -55°C to 125°C operating temperature range. The part is currently active and maintains ROHS3 compliance with REACH unaffected status. Identifying equivalent parts is necessary when the primary part number is unavailable, when inventory constraints require sourcing alternatives, or when procurement specifications permit functionally identical substitutes that meet the same electrical and mechanical requirements.

Substiute Parts

CD42FD203FO3F

Cornell Dubilier Electronics (CDE)In Stock: 793CD42FD203FO3F Datasheet

Current PartRFQ

CD42FD203FO3

Cornell Dubilier Electronics (CDE)In Stock: 960CD42FD203FO3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Equivalent parts for the CD42FD203FO3F are identified through strict matching of the electrical and mechanical parameters that define functional interchangeability:

Critical Matching Parameters:

• Capacitance: 0.02 µF
• Voltage Rating: 500 V
• Tolerance: ±1%
• Dielectric Material: Mica
• Mounting Type: Through Hole
• Package Type: Radial
• Lead Spacing: 1.063" (27.00 mm)
• Operating Temperature Range: -55°C to 125°C
• Physical Dimensions: 1.421" L x 0.299" W, Height 0.870" (Max)

Parts matching all these parameters are considered direct parametric equivalents and are suitable for direct replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both parts demonstrate electrical and mechanical equivalence across all specified operational parameters. The CD42FD203FO3F is recommended for applications subject to ROHS3 compliance requirements or REACH regulatory constraints. The CD42FD203FO3 serves as a functional substitute when RoHS or REACH compliance is not a project specification. Selection between these parts is determined by regulatory and compliance requirements applicable to the end application, not by electrical or mechanical performance criteria.

Frequently Asked Questions (FAQ)

Q: Can CD42FD203FO3 be used as a direct replacement for CD42FD203FO3F in all applications?

A: The CD42FD203FO3 is an electrical and mechanical equivalent. Direct substitution is appropriate only when ROHS3 compliance and REACH unaffected status are not required by the application or end-market specifications.

Q: What are the key parameters that determine substitution eligibility?

A: Capacitance value (0.02 µF), voltage rating (500 V), tolerance (±1%), dielectric type (Mica), mounting method (Through Hole Radial), lead spacing (1.063"), and operating temperature range (-55°C to 125°C) must all match exactly for direct substitution.

Q: Will the physical dimensions of CD42FD203FO3 fit the same printed circuit board layout as CD42FD203FO3F?

A: Both parts share identical physical dimensions and lead spacing, ensuring compatibility with the same PCB footprints and assembly processes.

Q: How do the compliance certifications differ between these parts?

A: CD42FD203FO3F maintains ROHS3 compliance and REACH unaffected status. CD42FD203FO3 is non-compliant with RoHS standards and is affected by REACH regulations. Regulatory compliance requirements must be evaluated before selection.

Q: Are inventory levels a consideration in part selection?

A: Both parts maintain active production status with available inventory. Stock levels (771 units for CD42FD203FO3F and 859 units for CD42FD203FO3) are current but should be verified against project procurement timelines.