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How to read HVC's model number coding system (DL/D/E/F/SL)?
HVC's model number system encodes dielectric material type using single-letter codes that map directly to EIA temperature coefficient standards:
| Code | Dielectric Material | Temperature Coefficient | Typical DF @ 1kHz | Application Focus |
|------|--------------------|------------------------|-------------------|-------------------|
| DL | N4700 (Class 1) | -30°C ~ +85°C, ΔC/C ≈ 0% | ≤0.2% | Ultra-HV, low-loss, precision |
|---|---|---|---|---|
| D | Y5T (Class 2) | -30°C ~ +85°C, +22%/-56% | ≤2.5% | General purpose, stable Class 2 |
| E | Y5U (Class 2) | -30°C ~ +85°C, +22%/-82% | ≤3.5% | High capacitance density |
| F | Y5V (Class 2) | -30°C ~ +85°C, +22%/-82% | ≤4.0% | Maximum capacitance value |
| SL | SL (Class 2) | -30°C ~ +85°C, stable | ≤2.0% | Low-loss Class 2 alternative |
Example decoding: `HVCT8G-30KV-DL35-471K`
* HVCT8G = Screw terminal doorknob series
* 30KV = 30kV DC rated voltage
* DL = N4700 dielectric (premium low-loss)
* 35 = 35mm body diameter
* 471K = 470pF ±10% tolerance
HVC model number decode, DL D E F SL dielectric code, capacitor part number system, N4700 Y5T Y5U code meaning
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