CD19FD391FO3 Mica Capacitor 390 pF 500 V

Part Overview

The CD19FD391FO3 is a 390 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE) rated for 500 V with ±1% tolerance. This component is an active product suitable for general-purpose applications requiring stable capacitance characteristics across a wide operating temperature range of -55°C to 125°C. Alternative models may be necessary due to RoHS compliance requirements or inventory availability for specific regulatory jurisdictions.

Substiute Parts

CD19FD391FO3

Cornell Dubilier Electronics (CDE)In Stock: 764CD19FD391FO3 Datasheet

Current PartRFQ

CD19FD391FO3F

Cornell Dubilier Electronics (CDE)In Stock: 1006CD19FD391FO3F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part CD19FD391FO3F is qualified as an equivalent based on the following critical electrical and mechanical parameters:

Matching Parameters:

• Capacitance: 390 pF (identical)
• Tolerance: ±1% (identical)
• Voltage Rating: 500 V (identical)
• Dielectric Material: Mica (identical)
• Mounting Type: Through Hole (identical)
• Package/Case: Radial (identical)
• Lead Spacing: 0.343" (8.70 mm) (identical)
• Operating Temperature Range: -55°C to 125°C (identical)
• Series: CD19 (identical)

The substitute maintains all functional and mechanical specifications required for direct replacement in applications requiring these exact parameters. The primary distinction between the two parts is regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

CD19FD391FO3: Select this variant when non-compliance with RoHS3 regulations is acceptable and REACH-affected material status is permissible for the application. Suitable for legacy systems or applications with relaxed environmental compliance requirements. Current inventory: 669 pieces.

CD19FD391FO3F: Select this variant for applications requiring RoHS3 compliance and REACH-unaffected material status. This is the preferred choice for designs targeting modern regulatory environments and electronics waste reduction requirements. Current inventory: 981 pieces.

Both variants are active products from the same manufacturer and series, ensuring consistent electrical performance and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can CD19FD391FO3F replace CD19FD391FO3 directly?

A: Yes. Both parts are electrically and mechanically identical with matching capacitance (390 pF), tolerance (±1%), voltage rating (500 V), mounting configuration (through-hole radial), and physical dimensions. Direct substitution is possible without circuit redesign.

Q: What is the difference between these two parts?

A: The primary difference is regulatory compliance. CD19FD391FO3F is RoHS3 compliant and REACH-unaffected, while CD19FD391FO3 is RoHS non-compliant and REACH-affected. Electrical and mechanical specifications are identical.

Q: Which part should I select for new designs?

A: Selection depends on regulatory requirements for your specific application. For designs targeting European Union markets or requiring environmental compliance certifications, CD19FD391FO3F is the appropriate choice. For legacy or unrestricted applications, either part functions identically.

Q: Are the physical dimensions and mounting footprints identical?

A: Yes. Both parts have identical dimensions of 0.642" L x 0.201" W (16.30 mm x 5.10 mm), maximum seated height of 0.512" (13.00 mm), and lead spacing of 0.343" (8.70 mm). PCB footprints are interchangeable.

Q: Can I use these parts interchangeably in the same circuit?

A: Yes. The electrical specifications—capacitance, tolerance, voltage rating, and operating temperature range—are identical. Both parts are suitable for applications requiring stable capacitance characteristics in the frequency ranges and temperature conditions specified.