CD42FD303JO3F Equivalent & Substitute Parts

Part Overview

The CD42FD303JO3F is a 0.03 µF mica capacitor rated for 500 V operation in radial through-hole configuration, manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active product status and is suitable for general-purpose applications requiring stable capacitance and high voltage performance. Mica dielectric capacitors are selected for applications demanding low loss, excellent frequency stability, and reliable operation across extended temperature ranges from -55°C to 125°C. Identification of equivalent and substitute parts becomes necessary when managing inventory constraints, addressing supply chain variations, or accommodating specific compliance requirements across different production batches or procurement channels.

Substiute Parts

CD42FD303JO3F

Cornell Dubilier Electronics (CDE)In Stock: 785CD42FD303JO3F Datasheet

Current PartRFQ

CD42FD303JO3

Cornell Dubilier Electronics (CDE)In Stock: 897CD42FD303JO3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD42FD303JO3F is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part CD42FD303JO3 shares identical specifications in the following key areas:

Electrical Parameters (Must Match):

• Capacitance: 0.03 µF
• Tolerance: ±5%
• Voltage Rating: 500 V
• Dielectric Material: Mica

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: Radial
• Lead Spacing: 1.063" (27.00 mm)
• Physical Dimensions: 1.441" L x 0.350" W (36.60 mm x 8.90 mm)
• Height - Seated (Max): 0.890" (22.60 mm)

Environmental Parameters (Must Match):

• Operating Temperature Range: -55°C to 125°C

Both parts belong to the CD42 series and maintain Active product status. Substitution between these parts is valid from a functional and mechanical standpoint based on parameter equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (CD42FD303JO3F): The CD42FD303JO3F is the recommended primary selection for new designs and applications requiring full regulatory compliance. This part carries ROHS3 Compliant certification and REACH Unaffected status, making it suitable for applications subject to European Union environmental directives and global compliance requirements.

Substitute Selection (CD42FD303JO3): The CD42FD303JO3 is functionally and mechanically equivalent and may be selected when ROHS3 compliance and REACH unaffected status are not required by application specifications or regulatory frameworks. This part is RoHS non-compliant and REACH Affected, indicating it may contain restricted substances or be subject to REACH registration requirements. Selection of this substitute should be limited to applications where compliance certifications are not mandatory.

Inventory Availability: Both parts maintain Active product status with current stock availability (CD42FD303JO3F: 678 Pcs; CD42FD303JO3: 789 Pcs), supporting procurement flexibility based on compliance requirements rather than availability constraints.

Frequently Asked Questions (FAQ)

Q: Can CD42FD303JO3 be used as a direct replacement for CD42FD303JO3F in all applications?

A: CD42FD303JO3 is electrically and mechanically equivalent to CD42FD303JO3F. However, substitution depends on application compliance requirements. If ROHS3 compliance or REACH unaffected status is specified, CD42FD303JO3F must be used. For applications without these compliance mandates, CD42FD303JO3 is functionally interchangeable.

Q: What are the critical parameters that must match for substitution?

A: Substitution requires exact matching of: capacitance (0.03 µF), tolerance (±5%), voltage rating (500 V), dielectric material (Mica), mounting type (Through Hole Radial), lead spacing (1.063" / 27.00 mm), and operating temperature range (-55°C to 125°C). Any deviation in these parameters disqualifies substitution.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both CD42FD303JO3F and CD42FD303JO3 share identical physical dimensions: 1.441" L x 0.350" W (36.60 mm x 8.90 mm) with maximum seated height of 0.890" (22.60 mm). PCB footprint compatibility is maintained.

Q: What is the difference in compliance status between these parts?

A: CD42FD303JO3F is ROHS3 Compliant and REACH Unaffected. CD42FD303JO3 is RoHS non-compliant and REACH Affected. These differences reflect manufacturing batch or source variations and do not affect electrical performance.

Q: Can these parts be mixed in the same production batch?

A: Mixing is not recommended if compliance documentation or traceability to specific certifications is required. Maintain separate inventory and procurement records for each part number to ensure compliance audit trails and regulatory documentation accuracy.

Q: What is the lead spacing significance for PCB design?

A: Lead spacing of 1.063" (27.00 mm) determines the through-hole pad spacing on the PCB. Both parts maintain identical lead spacing, ensuring footprint compatibility without PCB redesign.