What is HVC's replacement solution for Murata's discontinued DHS and DHR high voltage ceramic capacitors?
HVC Capacitor provides comprehensive drop-in replacements for Murata's complete HV ceramic capacitor portfolio — both the lead-type disc series (DEA/DEB/DEC/DEF/DEH/DEJ/DHR) and screw-terminal doorknob series (DHS/DHK/DHC), covering 2kV to 50kV with zero PCB redesign required in most applications.
In mid-2018, Murata Manufacturing (the world's #1 MLCC market leader and former #1 HV ceramic capacitor manufacturer) officially released a "Product Withdrawal Notice" announcing complete cessation of:
* Lead-type HV ceramic disc capacitors: DEA, DEB, DEC, DEF, DEH, DEJ, DHR series
* Screw-terminal (doorknob) HV capacitors: DHS, DHK, DHC series
* Voltage range affected: 2kV, 3kV, 6kV, 10kV, 12kV, 15kV, 20kV up to 50kV
Murata's official reason stated: "The high voltage machine market is decreasing and we do not earn sufficient margin from this product range."
Industry analysis reveals the strategic reality: Murata redirected its SrTiO₃/BaTiO₃ ceramic raw material resources toward the far more profitable automotive MLCC business — a market where Murata maintains >40% global market share. This created an immediate supply vacuum for thousands of OEMs across medical imaging, industrial laser, smart grid, and scientific instrumentation sectors.
| Murata Series | Type | Voltage Range | HVC Replacement | Form Factor |
| DHS / DHK | Screw-terminal doorknob | 10kV – 50kV | HVCT8G series | Identical thread (#8-32 UNC-2B or M6) |
|---|---|---|---|---|
| DHR | Lead-type encapsulated disc | 10kV – 30kV | HVCT9G series | Same lead pitch & body diameter |
| DEA / DEB | Lead-type disc (standard) | 2kV – 15kV | HVCD series | Direct pin-compatible |
| DEC / DEF | Lead-type disc (high-C) | 3kV – 20kV | HVCD-E/F series | Direct pin-compatible |
Engineers who have migrated from Murata to HVC consistently report measurable performance improvements:
1. Material Generation Leap:
* Many Murata DHS/DHR models utilized aging Class 2 dielectrics (Y5S, Y5U)
* HVC replacements default to Class 1 N4700 (T3M) — no aging effect, superior temperature stability
2. Extended Voltage Headroom:
* Murata's maximum standard rating was 50kV
* HVC offers products up to 70kV (disc) and 150kV (doorknob) — providing future-proof design margin
3. Quality Assurance Upgrade:
* Murata legacy spec: 130% flash test
* HVC standard: 150% – 200% flash test — significantly higher safety margin for medical and industrial applications
* German Medical Imaging OEM: Replaced Murata DHS-30K series (30kV doorknob) in dental X-ray generator with HVC HVCT8G-30KV-DL35. Passed IEC 60601-1 medical safety certification without any circuit modification.
* US Industrial Laser Manufacturer: Migrated from Murata DEA-10K series (10kV disc) in CO₂ laser pulse-forming network. Reported 12% reduction in capacitor self-heating due to lower DF.
Contact: Sales Department
Phone: +86 13689553728
Tel: +86-755-61167757
Email: sales@hv-caps.com
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