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CD19FD621FO3 Mica Capacitor Equivalent & Substitute Parts
Part Overview
The CD19FD621FO3 is a 620 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 500 V operation with ±1% tolerance. This radial through-hole component is designed for general-purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is currently active in production with 886 units in stock.
Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative compliance certifications are required, or when inventory constraints necessitate sourcing from available stock of functionally identical components.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 620 pF |
| Tolerance | ±1% |
| Voltage Rating | 500 V |
| Dielectric Material | Mica |
| Mounting Type | Through Hole |
| Package Type | Radial |
| Lead Spacing | 0.343" (8.70 mm) |
| Operating Temperature Range | -55°C to 125°C |
| Physical Dimensions | 0.650" L x 0.201" W (16.50 mm x 5.10 mm) |
| Height - Seated (Max) | 0.512" (13.00 mm) |
Substitute Part Grouping Explanation
Substitution of the CD19FD621FO3 is determined by strict equivalence across the following electrical and mechanical parameters:
- Capacitance Value: 620 pF (exact match required)
- Tolerance: ±1% (exact match required)
- Voltage Rating: 500 V (exact match required)
- Dielectric Type: Mica (exact match required)
- Mounting Configuration: Through Hole Radial (exact match required)
- Lead Spacing: 0.343" (8.70 mm) (exact match required)
- Physical Envelope: 0.650" L x 0.201" W, Height 0.512" max (exact match required)
- Temperature Range: -55°C to 125°C (exact match required)
The substitute part CD19FD621FO3F meets all electrical and mechanical parameters identically to the primary part. The difference between these parts is limited to compliance certifications and regulatory status.
Parameter Comparison
| Parameter | CD19FD621FO3 | CD19FD621FO3F | Match |
|---|---|---|---|
| Manufacturer | Cornell Dubilier Electronics (CDE) | Cornell Dubilier Electronics (CDE) | Yes |
| Series | CD19 | CD19 | Yes |
| Capacitance | 620 pF | 620 pF | Yes |
| Tolerance | ±1% | ±1% | Yes |
| Voltage Rating | 500 V | 500 V | Yes |
| Dielectric Material | Mica | Mica | Yes |
| Operating Temperature | -55°C to 125°C | -55°C to 125°C | Yes |
| Mounting Type | Through Hole | Through Hole | Yes |
| Package / Case | Radial | Radial | Yes |
| Lead Spacing | 0.343" (8.70 mm) | 0.343" (8.70 mm) | Yes |
| Physical Dimensions | 0.650" L x 0.201" W (16.50 mm x 5.10 mm) | 0.650" L x 0.201" W (16.50 mm x 5.10 mm) | Yes |
| Height - Seated (Max) | 0.512" (13.00 mm) | 0.512" (13.00 mm) | Yes |
| RoHS Status | RoHS non-compliant | RoHS3 Compliant | Different |
| REACH Status | REACH Affected | REACH Unaffected | Different |
| Product Status | Active | Active | Yes |
| Inventory | 886 Pcs | 887 Pcs | Both Available |
Engineering Selection Recommendations
CD19FD621FO3 is suitable for applications where RoHS non-compliance is acceptable and REACH-affected material sourcing is permissible. This part maintains active production status with adequate inventory availability.
CD19FD621FO3F is the appropriate selection for applications requiring RoHS3 compliance and REACH-unaffected material sourcing. This variant is functionally identical in all electrical and mechanical parameters while providing enhanced regulatory compliance. Both parts are currently in active production with comparable inventory levels.
Selection between these two parts should be based solely on the regulatory and compliance requirements of the end application. No electrical or mechanical performance difference exists between the two part numbers.
Frequently Asked Questions (FAQ)
Q: Are CD19FD621FO3 and CD19FD621FO3F electrically interchangeable?
A: Yes. Both parts have identical capacitance (620 pF), tolerance (±1%), voltage rating (500 V), and operating temperature range (-55°C to 125°C). They are electrically equivalent.
Q: Are these parts mechanically interchangeable?
A: Yes. Both parts share identical physical dimensions (0.650" L x 0.201" W), height (0.512" max), lead spacing (0.343"), and radial through-hole mounting configuration. They are mechanically interchangeable on PCBs designed for either part number.
Q: What is the difference between CD19FD621FO3 and CD19FD621FO3F?
A: The primary differences are regulatory compliance certifications. CD19FD621FO3F is RoHS3 compliant and REACH unaffected, while CD19FD621FO3 is RoHS non-compliant and REACH affected. All electrical and mechanical specifications are identical.
Q: Which part should I specify for a new design?
A: Selection depends on your application's regulatory requirements. If RoHS3 compliance is required, specify CD19FD621FO3F. If RoHS compliance is not a requirement, either part is acceptable based on availability and supply chain considerations.
Q: Can I use CD19FD621FO3F as a direct replacement for CD19FD621FO3 in existing designs?
A: Yes. CD19FD621FO3F is a direct substitute with no electrical or mechanical differences. It can be used as a replacement without design modifications.
Q: Are both parts currently available?
A: Yes. Both CD19FD621FO3 (886 units) and CD19FD621FO3F (887 units) are in active production with inventory in stock.
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