Ceramic capacitor 20kv price manufacturers

When sourcing 20kv capacitors, you must prioritize Capacitance Tolerance (typically ±10% or ±20%) and the Dissipation Factor (should be <0.5% for high-frequency applications). Ensure the Insulation Resistance is ≥10,000 MΩ to prevent leakage. For 20kv ratings, the Dielectric Material is critical; N4700 is preferred for high-stability and low-loss requirements, while Y5T or Y5U are common for general high-voltage pulse applications.

Suppliers must provide RoHS and REACH compliance certificates to ensure the absence of hazardous substances. For industrial and medical equipment integration, look for components that meet UL1449 (for surge suppression) or IEC 60384 standards. Always request a VDE or CE marking if the end product is destined for the European market to ensure the component handles electrical stress safely.

High-voltage capacitors are sensitive to Temperature Coefficients. You should verify the Operating Temperature Range (usually -25°C to +85°C). In high-humidity environments, ensure the capacitors have a High-Quality Epoxy Resin Coating to prevent surface arcing and corona discharge. For power grids or X-ray machines, specify the Rated AC vs. DC voltage, as AC applications generate more internal heat.

Buyers should demand a Voltage Withstanding Test report, where the component is tested at 1.5x to 2x the rated voltage (30kv-40kv for a 20kv unit) for a short duration. Additionally, request a Partial Discharge (PD) test; a low PD level (e.g., <10pC at rated voltage) is a hallmark of a high-quality, long-life ceramic capacitor.

Utilize Made-in-China.com's Secured Trading services and prioritize Audited Suppliers who have undergone third-party on-site inspections. Always request a small sample batch (5-10 units) for lab testing before committing to a large order. Verify the manufacturer's ISO 9001 certification to ensure consistent production quality.

Price is heavily influenced by the Dielectric Material (e.g., N4700 is more expensive than Y5V). Negotiate based on Volume Tiers; orders exceeding 5,000 units typically qualify for a 15-25% discount. For lead times, standard production is 2-4 weeks, but you should negotiate a Safety Stock agreement with the supplier to ensure immediate dispatch for repeat orders.

Ceramic capacitors are brittle and sensitive to mechanical shock. Ensure the supplier uses Vacuum Packaging or Anti-Static Bubble Bags inside rigid, double-walled corrugated boxes. For international shipping, specify FOB or CIF terms and ensure the pallet is shrink-wrapped and labeled as 'Fragile' to prevent mishandling during customs inspections.

Avoid direct wire transfers to unverified accounts. Use Escrow-based payment systems provided by professional platforms like Made-in-China.com, which hold funds until you confirm receipt of goods. For large-scale industrial contracts, consider a Letter of Credit (L/C) to align payment with specific shipping milestones and quality documentation.