CD19FD821FO3 Equivalent & Substitute Parts

Part Overview

The CD19FD821FO3 is an 820 pF mica capacitor rated for 500 V with ±1% tolerance, manufactured by Cornell Dubilier Electronics (CDE). This through-hole radial component is designed for general-purpose applications requiring high stability and reliability across the operating temperature range of -55°C to 125°C. The part is currently active in production with 667 pieces available in inventory.

Identification of substitute parts becomes necessary when the primary part number reaches end-of-life status, experiences supply constraints, or when design requirements mandate compliance with specific regulatory standards such as RoHS3 certification.

Substiute Parts

CD19FD821FO3

Cornell Dubilier Electronics (CDE)In Stock: 754CD19FD821FO3 Datasheet

Current PartRFQ

CD19FD821FO3F

Cornell Dubilier Electronics (CDE)In Stock: 2843CD19FD821FO3F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CD19FD821FO3 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 820 pF (exact match required)
• Tolerance: ±1% (exact match required)
• Voltage rating: 500 V (exact match required)
• Dielectric material: Mica (exact match required)

Mechanical Parameters:

• Mounting type: Through Hole (exact match required)
• Package configuration: Radial (exact match required)
• Lead spacing: 0.343 inches / 8.70 mm (exact match required)
• Physical dimensions: 0.650" L x 0.209" W (16.50 mm x 5.30 mm) (exact match required)
• Maximum seated height: 0.512 inches / 13.00 mm (exact match required)

Environmental Parameters:

• Operating temperature range: -55°C to 125°C (exact match required)

The CD19FD821FO3F qualifies as a parametric equivalent because it maintains identical electrical, mechanical, and environmental specifications while offering improved regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

CD19FD821FO3 (Original Part): Use this part number when RoHS non-compliance is acceptable for the application and when REACH-affected material status does not conflict with supply chain requirements. This part maintains active production status with adequate inventory availability.

CD19FD821FO3F (Substitute Part): Select this part number when RoHS3 compliance is mandated by design specifications, regulatory requirements, or customer standards. The CD19FD821FO3F provides identical electrical and mechanical performance while achieving RoHS3 compliance and REACH unaffected status. Higher inventory availability (2831 pieces) supports extended lead time requirements and volume production schedules.

Both parts share identical electrical characteristics, mechanical dimensions, and environmental operating parameters. Selection between these two part numbers is determined solely by regulatory compliance requirements and supply chain considerations, not by functional performance differences.

Frequently Asked Questions (FAQ)

Q: Can CD19FD821FO3F be used as a direct replacement for CD19FD821FO3 in existing designs?

A: Yes. The CD19FD821FO3F is a direct parametric equivalent with identical capacitance (820 pF), tolerance (±1%), voltage rating (500 V), dielectric material (mica), mounting type (through hole), package configuration (radial), lead spacing (0.343 inches), and physical dimensions. No circuit modifications or PCB layout changes are required.

Q: What is the difference between these two part numbers?

A: The primary differences are regulatory compliance status and inventory levels. CD19FD821FO3F is RoHS3 compliant and REACH unaffected, while CD19FD821FO3 is RoHS non-compliant and REACH affected. CD19FD821FO3F has higher inventory availability (2831 pieces versus 667 pieces).

Q: Are there any mechanical compatibility concerns when substituting CD19FD821FO3F for CD19FD821FO3?

A: No. Both parts have identical mechanical specifications: radial package configuration, 0.343-inch lead spacing, 0.650" length, 0.209" width, and 0.512-inch maximum seated height. PCB footprints and mounting holes require no modification.

Q: Which part should be selected for new designs?

A: For new designs, CD19FD821FO3F is the recommended selection due to RoHS3 compliance and REACH unaffected status, which align with current regulatory standards and supply chain best practices. Both parts are active in production.

Q: Do these parts have different operating temperature ranges?

A: No. Both CD19FD821FO3 and CD19FD821FO3F operate across the identical temperature range of -55°C to 125°C.

Q: Is the ±1% tolerance specification maintained in both part numbers?

A: Yes. Both CD19FD821FO3 and CD19FD821FO3F maintain ±1% capacitance tolerance and 500 V voltage rating.