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Mica and PTFE Capacitors

Category Introduction

Capacitors incorporating mica or PTFE (Teflon®) dielectrics are used in applications that require good parametric stability, low losses, and relatively high voltage ratings. An electrostatic (non-polarized) capacitor type, the tradeoff for these desirable characteristics are relatively high cost and a limited range of available capacitance values, generally of a few tens of nanofarads or less.

Product List

9086 Items
PDF Mfr Part # Quantity
Available		 UnitPrice RFQ Series Packaging Product StatusCapacitanceToleranceVoltage - RatedDielectric MaterialOperating TemperatureMounting TypePackage / CaseLead SpacingFeaturesSize / DimensionHeight - Seated (Max)
CDV16FF471JO3F
CDV16FF471JO3F
CAP MICA 470PF 5% 1KV RADIAL
Cornell Dubilier Electronics (CDE)
 154 $4.21
CDV16 Bulk Active470 pF±5%1 kVMica-55°C ~ 150°CThrough HoleRadial0.234" (5.94mm)RF, High Q, Low Loss0.449" L x 0.161" W (11.40mm x 4.10mm)0.469" (11.90mm)
CD19FD102JO3F
CD19FD102JO3F
CAP MICA 1000PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 58 $4.13
CD19 Bulk Active1000 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.343" (8.70mm)General Purpose0.650" L x 0.220" W (16.50mm x 5.60mm)0.520" (13.20mm)
CDV16FF102JO3
CDV16FF102JO3
CAP MICA 1000PF 5% 1KV RADIAL
Cornell Dubilier Electronics (CDE)
 162 $4.65
CDV16 Bulk Active1000 pF±5%1 kVMica-55°C ~ 150°CThrough HoleRadial0.232" (5.90mm)RF, High Q, Low Loss0.461" L x 0.173" W (11.70mm x 4.40mm)0.500" (12.70mm)
CDV16FF102JO3F
CDV16FF102JO3F
CAP MICA 1000PF 5% 1KV RADIAL
Cornell Dubilier Electronics (CDE)
 73 $4.79
CDV16 Bulk Active1000 pF±5%1 kVMica-55°C ~ 150°CThrough HoleRadial0.234" (5.94mm)RF, High Q, Low Loss0.461" L x 0.173" W (11.70mm x 4.40mm)0.500" (12.70mm)
MC22FF101J-F
MC22FF101J-F
CAP MICA 100PF 5% 1KV 2220
Cornell Dubilier Electronics (CDE)
 143 $5.44
MC Bulk Active100 pF±5%1 kVMica-55°C ~ 125°CSurface Mount2220 (5750 Metric)-RF, High Q, Low Loss0.224" L x 0.197" W (5.70mm x 5.00mm)0.157" (4.00mm)
CD19FD392JO3F
CD19FD392JO3F
CAP MICA 3900PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 68 $10.14
CD19 Bulk Active3900 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.343" (8.70mm)General Purpose0.689" L x 0.311" W (17.50mm x 7.90mm)0.559" (14.20mm)
CD19FD472JO3F
CD19FD472JO3F
CAP MICA 4700PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 76 $11.14
CD19 Bulk Active4700 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.343" (8.70mm)General Purpose0.701" L x 0.350" W (17.80mm x 8.90mm)0.579" (14.70mm)
CD19FD502JO3F
CD19FD502JO3F
CAP MICA 5000PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 12 $12.01
CD19 Bulk Active5000 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.343" (8.70mm)General Purpose0.709" L x 0.370" W (18.00mm x 9.40mm)0.591" (15.00mm)
CD19FD472FO3F
CD19FD472FO3F
CAP MICA 4700PF 1% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 60 $14.43
CD19 Bulk Active4700 pF±1%500 VMica-55°C ~ 125°CThrough HoleRadial0.343" (8.70mm)General Purpose0.701" L x 0.350" W (17.80mm x 8.90mm)0.579" (14.70mm)
CDV19FF332JO3F
CDV19FF332JO3F
CAP MICA 3300PF 5% 1KV RADIAL
Cornell Dubilier Electronics (CDE)
 15 $16.60
CDV19 Bulk Active3300 pF±5%1 kVMica-55°C ~ 125°CThrough HoleRadial0.343" (8.70mm)General Purpose0.720" L x 0.382" W (18.30mm x 9.70mm)0.591" (15.00mm)
29280B222JO0
29280B222JO0
CAP MICA 2200PF 5% 8KV DISK
Cornell Dubilier Electronics (CDE)
 2 $830.12
292 Bulk Active2200 pF±5%8 kVMica-55°C ~ 125°CRequires HolderDisk, Metal Fitting - Threaded-General Purpose2.500" Dia (63.50mm)2.562" (65.07mm)
29280B272JO0
29280B272JO0
CAP MICA 2700PF 5% 8KV DISK
Cornell Dubilier Electronics (CDE)
 2 $835.56
292 Bulk Active2700 pF±5%8 kVMica-55°C ~ 125°CRequires HolderDisk, Metal Fitting - Threaded-General Purpose2.500" Dia (63.50mm)2.562" (65.07mm)
CDV16FF101JO3F
CDV16FF101JO3F
CAP MICA 100PF 5% 1KV RADIAL
Cornell Dubilier Electronics (CDE)
 162 $2.16
CDV16 Bulk Active100 pF±5%1 kVMica-55°C ~ 150°CThrough HoleRadial0.232" (5.90mm)RF, High Q, Low Loss0.429" L x 0.150" W (10.90mm x 3.80mm)0.461" (11.70mm)
CDV16FF121JO3F
CDV16FF121JO3F
CAP MICA 120PF 5% 1KV RADIAL
Cornell Dubilier Electronics (CDE)
 350 $2.15
CDV16 Bulk Active120 pF±5%1 kVMica-55°C ~ 150°CThrough HoleRadial0.232" (5.90mm)RF, High Q, Low Loss0.429" L x 0.150" W (10.90mm x 3.80mm)0.461" (11.70mm)
CD15ED560JO3F
CD15ED560JO3F
CAP MICA 56PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 143 $2.57
CD15 Bulk Active56 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.232" (5.90mm)General Purpose0.449" L x 0.169" W (11.40mm x 4.30mm)0.358" (9.10mm)
CD15ED330JO3
CD15ED330JO3
CAP MICA 33PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 55 $2.59
CD15 Bulk Active33 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.232" (5.90mm)General Purpose0.449" L x 0.169" W (11.40mm x 4.30mm)0.358" (9.10mm)
CD15ED390JO3
CD15ED390JO3
CAP MICA 39PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 132 $2.54
CD15 Bulk Active39 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.232" (5.90mm)General Purpose0.449" L x 0.169" W (11.40mm x 4.30mm)0.358" (9.10mm)
CD15CD050DO3
CD15CD050DO3
CAP MICA 5PF 0.5PF 500V RADIAL
Cornell Dubilier Electronics (CDE)
 73 $2.54
CD15 Bulk Active5 pF±0.5pF500 VMica-55°C ~ 125°CThrough HoleRadial0.232" (5.90mm)General Purpose0.449" L x 0.169" W (11.40mm x 4.30mm)0.358" (9.10mm)
CD15CD180JO3F
CD15CD180JO3F
CAP MICA 18PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 188 $2.58
CD15 Bulk Active18 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.232" (5.90mm)General Purpose0.449" L x 0.169" W (11.40mm x 4.30mm)0.358" (9.10mm)
CD15ED220JO3
CD15ED220JO3
CAP MICA 22PF 5% 500V RADIAL
Cornell Dubilier Electronics (CDE)
 214 $2.59
CD15 Bulk Active22 pF±5%500 VMica-55°C ~ 125°CThrough HoleRadial0.232" (5.90mm)General Purpose0.449" L x 0.169" W (11.40mm x 4.30mm)0.358" (9.10mm)

About Mica and PTFE Capacitors

What are Mica and PTFE Capacitors?

Mica and PTFE Capacitors

Mica and PTFE capacitors are specialized components used in electronic circuits to store and release electrical energy. These capacitors are known for their high precision, stability, and reliability. Mica capacitors utilize natural mica as the dielectric material, which provides excellent thermal stability and low loss characteristics. PTFE capacitors, on the other hand, use polytetrafluoroethylene (PTFE) as the dielectric, offering superior chemical resistance and high-temperature performance. Both types work on the principle of storing electrical charge between two conductive plates separated by an insulating material, allowing them to maintain consistent performance across a wide range of frequencies and environmental conditions.

Types of Mica and PTFE Capacitors

Mica Capacitors

Mica capacitors are typically used in applications requiring high precision and stability. They are available in two main types: silver mica and clamped mica capacitors. Silver mica capacitors are known for their low loss and high accuracy, making them ideal for RF applications and precision circuits. Clamped mica capacitors, while less common, are used in high-voltage applications due to their robust construction.

PTFE Capacitors

PTFE capacitors are highly valued for their excellent thermal and chemical resistance. They are often used in environments where high temperatures or corrosive substances are present. PTFE capacitors are available in various configurations, including film and foil types, which are used in high-frequency applications due to their low dissipation factor and high insulation resistance.

How to choose Mica and PTFE Capacitors?

When selecting mica and PTFE capacitors, several key parameters should be considered:

  • Capacitance Value: Determine the required capacitance based on the circuit's needs.
  • Voltage Rating: Choose a capacitor with a voltage rating that exceeds the maximum voltage in the application.
  • Temperature Coefficient: Consider the stability of capacitance over temperature changes.
  • Size and Form Factor: Ensure the capacitor fits within the physical constraints of the design.
  • Quality and Reliability: Evaluate suppliers based on their reputation, certifications, and customer reviews.

Environmental factors such as humidity, temperature extremes, and potential exposure to chemicals should also be considered. Proper installation, including secure mounting and adequate spacing, is crucial to ensure optimal performance and longevity.

Applications of Mica and PTFE Capacitors

Telecommunications

In the telecommunications industry, mica capacitors are used in RF circuits and filters due to their low loss and high stability. PTFE capacitors are employed in high-frequency transmission lines where temperature stability is crucial.

Medical Equipment

Mica capacitors are used in medical imaging equipment for their precision and reliability. PTFE capacitors are found in devices that require high-temperature sterilization processes.

Aerospace

The aerospace industry utilizes mica capacitors in navigation and communication systems for their ability to withstand extreme environmental conditions. PTFE capacitors are used in high-frequency radar systems.

Industrial Electronics

In industrial electronics, mica capacitors are used in precision measurement devices, while PTFE capacitors are applied in harsh environments where chemical resistance is necessary.

Consumer Electronics

Mica capacitors are found in high-fidelity audio equipment for their superior sound quality. PTFE capacitors are used in high-performance computing devices where thermal management is a concern.