Product Overview
Cornell Dubilier CD15D511J03 510 pF 500V Radial Dipped Mica
Condition
Unused new old stock (NOS). Body marked CDM 510±5%. Straight, untrimmed radial wire leads with intact resin dipping. Sourced from surplus inventory.
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Product Overview
Cornell Dubilier CD15D511J03 is a 510 pF, 500 VDC radial-leaded dipped silvered mica capacitor built with natural muscovite dielectric for tight tolerance and low drift in high-frequency circuits.
Key Features
- Capacitance: 510 pF (0.51 nF)
- Voltage rating: 500 VDC
- Tolerance: ±5%
- Dielectric: Natural muscovite silvered mica
- Lead configuration: Straight radial leads with 5.9 mm spacing
- Operating temperature range: -55°C to +125°C
Applications
- RF oscillator, transmitter, and receiver tank tuning where capacitance must remain stable across temperature shifts.
- High-voltage tube audio amplifiers, guitar tone stacks, and pulse networks.
- Precision analog filters, ham radio restorations, and bench prototyping.
Frequently Asked Questions
What is the lead spacing on this capacitor?
Lead spacing is 5.9 mm (0.234 in) with straight, unformed solder-coated wire leads.
Is silvered mica suitable for RF circuits?
Yes. Dipped silvered mica capacitors provide low dielectric loss, high Q factor, and tight capacitance stability up to 500 VDC, making them standard choices for tuned RF filters and timing networks.
Why buy individual capacitors instead of chasing a surplus lot?
Need more than one? More pieces cost less each - the price-break table on this page shows what each quantity costs.
Order the exact count needed for a repair or build without taking on the cost and clutter of surplus bulk lots. Shipping is $8 flat rate, free once the order passes $28, and orders leave the Idaho warehouse the same or next business day.
Mica capacitors do the quiet, unglamorous work of holding frequency dead steady while everything around them heats up. Solder it in, tune the circuit, and let the hardware run.
