How do I select the right N4700 material capacitor for my application?

Selecting the optimal N4700 material high voltage ceramic capacitor requires balancing five key parameters — operating voltage, capacitance value, frequency, temperature environment, and physical space constraints. HVC provides a structured decision framework to simplify this process for design engineers.

START: What is your primary application? │ ├── Medical X-Ray / CT / NDT Imaging │ → Priority: Reliability, Low Loss, Long Life │ → Recommended: HVCT8G-N4700-DL (Double-Layer) or HVCD-N4700-DL │ → Key Spec Focus: DF ≤ 0.2%, IR > 10GΩ, IEC 60601 compliance │ ├── CO₂ Laser / Pulse Power / PFN │ → Priority: High dV/dt, Surge Withstand, Thermal Stability │ → Recommended: HVCT8G-N4700-SingleDisc (for high C) or HVCT8G-N750 (if >50kHz) │ → Key Spec Focus: dV/dt ≥ 30 kV/μs, IFSM ≥ 2000A, low ESR │ ├── Electrostatic Precipitator / Industrial Filter │ → Priority: Continuous Duty, Environmental Resistance, Cost │ → Recommended: HVCD-N4700 or HVCT8G-N4700 (standard grade) │ → Key Spec Focus: Long life rating, humidity resistance, cost-effective │ ├── Smart Grid / Power Electronics / Inverter Snubber │ → Priority: Fast Switching, Low Inductance, dV/dt Handling │ → Recommended: HVCT8G-LF (Low Inductance) or HVCD-RF variant │ → Key Spec Focus: ESL < 5nH, fast recovery compatible, thermal management │ └── Scientific Research / Particle Accelerator / Custom → Priority: Precision, Custom Specs, Documentation → Recommended: Contact engineering team for custom development → Key Spec Focus: Matched pairs, special testing, full documentation package

Design Priority

Sacrifice Acceptable

Not Acceptable

|----------------|---------------------|----------------|

Maximum voltage headroom	Slightly higher cost	Never compromise V-rating below 120% of peak working voltage
Lowest DF/losses	May limit capacitance range	Don't accept DF > 0.5% for critical medical/laser apps
Smallest size	Higher ESR, lower surge capability	Don't undersize for high-current applications
Lowest cost	Wider tolerance, longer lead time	Don't use Y5U/Y5V where N4700 is required
Fastest delivery	Limited customization	Don't rush safety-critical qualification

Scenario

Use N4700?

Alternative

Why Switch?

|----------|-----------|-------------|-------------|

DC or line-frequency (50/60Hz), ultra-high V (>80kV)	✅ Yes	—	N4700 excels at HV
High-frequency resonance (100kHz – 10MHz Tesla coil)	⚠️ Marginal	N750	N750 has 5-10x lower losses at HF
General-purpose filtering, non-critical	⚠️ OK	Y5U/Y5V	Cheaper if loss not important
Extreme temperature cycling (-55°C to +150°C)	✅ Yes	—	N4700 has zero aging characteristic
Space-constrained, need max C/V per volume	⚠️ Consider	Stacked MLCC	Higher density but more expensive

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