Technical Specifications​

TKD series dielectrics include NPO, C4xx and X7R. Capacitance range 10 pF to 39 µF depending on dielectric and case size. Rated voltage range 250 VDC to 10,000 VDC; intermediate and higher voltages available on request. Operating temperature -55 to 125 °C for standard ceramic grades. Insulation resistance, dissipation factor and voltage-withstand values depend on dielectric, capacitance and voltage grade.

Functional Features​

High-voltage epoxy-coated radial construction. Available NPO for stable temperature coefficient, X7R for higher capacitance density, and C4xx for specialized low-loss or high-stability requirements. Marking includes series, capacitance, tolerance, rated voltage and date code.

Application Scenarios​

High-voltage power supplies, medical imaging modules, radar and RF support circuits, industrial pulse equipment, capacitor-divider networks, snubber circuits and laboratory instrumentation.

Performance Parameters​

NPO temperature coefficient approximately 0 ±30 ppm/°C. X7R capacitance variation approximately ±15 percent over the operating temperature range. C4xx low-loss grades offer application-specific stability. Dissipation factor, insulation resistance and withstand voltage must be taken from the exact ordered capacitance and voltage code.

Material and Structure​

Multilayer ceramic dielectric. Silver or silver/palladium electrode system with nickel or copper barrier layers depending on termination. Epoxy conformal coating over the ceramic body. Radial leads for through-hole mounting. Termination finishes include tin, tin/lead or gold options according to ordering code and RoHS requirement.

Working Principle​

The multilayer dielectric stores charge between stacked electrodes. Applied DC voltage produces an electric field within the ceramic; the lead termination transfers charge to the circuit. Higher-voltage grades use thicker dielectric layers, larger case sizes and coated construction to limit corona, leakage and partial discharge.

Installation Requirements​

Observe creepage and clearance distances for the rated voltage. Use through-hole PCB pads sized for the radial lead diameter and body dimensions. Avoid bending leads close to the ceramic body. For high-voltage designs, maintain adequate board spacing and do not place heat-generating components that raise the capacitor above its rated ambient.

Usage Precautions​

Do not exceed the rated DC voltage or allowable AC ripple. Verify capacitance tolerance and voltage grade from the complete ordering code. Store in dry conditions; observe manufacturer storage time limits for tinned, gold-plated or non-tinned parts. For ZL68061 specifically, request the Exxelia TKD decoding sheet to confirm dielectric, capacitance value, tolerance, voltage and reliability level before procurement.