# PPS/CBB81 Series High-Voltage Metallized Polypropylene Film Capacitors

> Epoxy-dipped high-voltage film capacitors with metallized polypropylene film and aluminum foil, for pulse and resonant circuits. 1,000–2,000 VDC, 1–33 nF.

- Series code: PPS/CBB81
- Product line: [Film capacitors](https://www.songtian-ste.com/en/products/film-capacitors/) › Polypropylene film capacitors
- Part numbers: 232 · [part list (JSON)](https://www.songtian-ste.com/data/parts/cbb81.json)
- Page: https://www.songtian-ste.com/en/products/film-capacitors/cbb81/
- Chinese version: https://www.songtian-ste.com/zh/products/film-capacitors/cbb81/
- [Ask AI about this series](https://www.songtian-ste.com/en/products/film-capacitors/cbb81/?ask=Help%20me%20choose%20a%20part%20from%20the%20STE%20PPS%2FCBB81%20series.)

## Key specifications

| Parameter | Value |
| --- | --- |
| Rated voltage | 1,000 / 1,250 / 1,600 / 2,000 VDC |
| Capacitance | 1–33 nF |
| Construction | Metallized PP film + aluminum foil |
| Tolerance | ±5% / ±10% |
| Lead spacing | 15 / 22.5 mm |
| Operating temperature | −40 °C to +105 °C |

## Engineering details

### Overview

High-voltage polypropylene film capacitors with a non-inductive winding of metallized polypropylene film and aluminum foil and an epoxy-resin dip coating, for high-pulse, high-current and high-frequency DC circuits. Rated 1,000, 1,250, 1,600 and 2,000 VDC, 1–33 nF, J ±5% or K ±10%. Designed for frequencies up to 100 kHz. Lead spacing 15 and 22.5 mm. Operating temperature −40 °C to +105 °C.

#### Series features

- Non-inductive winding of metallized polypropylene film and aluminum foil
- Rated 1,000 / 1,250 / 1,600 / 2,000 VDC; 1 to 33 nF
- Dissipation factor tan δ ≤0.1% at 1 kHz
- Designed for high pulse and high current, at frequencies up to 100 kHz

#### Typical applications

- High-voltage pulse and commutation circuits (dV/dt, peak current and repetitive energy on request)
- Electronic ballasts; validate resonant frequency, ignition transient, RMS current and temperature rise
- High-frequency resonant and snubber circuits within the rated voltage (current limits on request)
- High-voltage DC pulse circuits; check insulation coordination, corona and partial-discharge margin and lifetime

### Specifications

|   |   |
| --- | --- |
| Product type | Epoxy-dipped high-voltage polypropylene pulse capacitor for high-current, high-frequency DC circuits |
| Construction | Metallized polypropylene film and aluminum foil · non-inductive winding · epoxy-resin dip coating |
| Rated DC voltage | 1,000 · 1,250 · 1,600 · 2,000 VDC |
| Capacitance range | 1–33 nF; max. 22 nF at 2,000 VDC |
| Capacitance tolerance | J ±5% · K ±10% |
| Operating temperature | −40 °C to +105 °C |
| Climatic category | 40/100/21 · derating between +100 °C and +105 °C on request |
| Storage temperature | +15 °C to +35 °C |
| Dissipation factor | tan δ ≤0.1% at 1 kHz, 1.0 Vrms, 20 °C |
| Insulation resistance | ≥50,000 MΩ at 100 VDC, 60 s, 20 °C |
| Voltage proof, terminal to terminal | 1.75 × UR for 5 s |
| Frequency | Designed for up to 100 kHz |
| Pulse and current ratings | Designed for high pulse and high current |
| AC operation | DC-rated only; permissible AC voltage and current versus frequency on request |
| Temperature coefficient of capacitance | Negative, with small capacitance change |
| Safety class | Non-safety product; do not use across the line or line to earth |
| Body dimensions | W max. 18–25 · H max. 10–19.5 · T max. 5.5–12 mm, depending on voltage and capacitance |
| Lead spacing | 15 · 22.5 mm, ±1.0 mm |
| Lead diameter | 0.8 ±0.05 mm |
| Lead forms and packing | Long straight · inner-bent · straight taped · bent taped |
| Taping | Tape dimensions specified for F = 15 and 20–22.5 mm |
| Soldering profile, PP | Preheat ≤110 °C · soldering ≤120 °C · ≤15 s |
| Soldering profile, PE | Preheat ≤125 °C · soldering ≤160 °C · ≤15 s |
| Hand soldering | 350 °C max. · 3 s max. · ≥2 mm from the coating |
| Reflow soldering | Not permitted; film shrinkage can degrade performance |
| Environmental compliance | RoHS and REACH compliant; bromine-free and halogen-free. Material declarations on request. |
| Further data | On request: internal electrode arrangement and self-healing behavior · storage humidity and shelf life · voltage and current versus frequency, impedance and resonance data · dV/dt, peak current, K0, repetitive duty, pulse energy and RMS current · corona inception and extinction voltage, partial-discharge conditions and altitude derating · capacitance-temperature curve · pulse-life, high-voltage endurance, overload, partial-discharge, damp-heat, thermal-cycle, vibration and lead-strength test results |

### Variants

Ranges by dielectric, package and lead style within this series.

| Variant | Body dimensions | Rated voltage / capacitance | Electrode construction / tolerance | Lead / land pattern | Notes |
| --- | --- | --- | --- | --- | --- |
| Q · 15 mm | W max. 18 · H max. 10–18 · T max. 5.5–11 mm | 1,000–2,000 VDC · 1–33 nF, depending on rating | Metallized PP + aluminum foil · J/K | P 15 ±1.0 · d 0.8 ±0.05 mm | For each voltage, check dV/dt, pulse current, corona margin and temperature rise per part number. |
| T · 22.5 mm | W max. 25 · H max. 15–19.5 · T max. 8–12 mm | Higher voltage and capacitance · 2,000 VDC to 22 nF | Metallized PP + aluminum foil · J/K | P 22.5 ±1.0 · d 0.8 ±0.05 mm | Larger body for pulse duty; check RMS current, high-voltage endurance, partial discharge, vibration and board support per part number. |

### Selection guide

Start with the complete high-voltage pulse waveform and the insulation environment. Then check electrode construction, voltage, capacitance, dV/dt, repetitive and RMS current, frequency, hot-spot rise, corona and partial-discharge margin, lifetime and dimensions.

1. **Define the electrical and insulation environment**
   Specify DC bias, peak voltage, rise and fall time, dV/dt, pulse width, repetition rate, ringing, polarity reversal and abnormal transients, together with altitude, pollution degree, surrounding clearances and the required corona and partial-discharge margin.
2. **Select voltage and capacitance**
   The series covers 1–33 nF at 1,000/1,250/1,600/2,000 VDC with 15/22.5 mm lead spacing. For other voltages, values or lead spacings, request the part specification.
3. **Calculate pulse, current and frequency stress**
   Use Ipk = C·dV/dt and the actual waveform to calculate peak current, repetitive energy and RMS current, and check them against the dV/dt, K0, Ipk, Irms, ESR, ESL, impedance and resonance limits.
4. **Check temperature rise and high-voltage lifetime**
   Calculate dielectric and connection losses and hot-spot rise at the actual spectrum and enclosure ambient. The climatic category is 40/100/21 while operation extends to +105 °C: voltage, frequency, temperature and altitude derating, and partial-discharge and pulse endurance data, on request.
5. **Confirm construction and assembly**
   Match the part number to electrode arrangement, voltage, capacitance, tolerance, W/H/T, lead spacing, lead form, packing and soldering profile. Do not use reflow soldering; validate lead forming and vibration.

### Design notes

#### At 2 kV, design the complete insulation system

Coordinate internal margin, board clearance, altitude, pollution, enclosure geometry and repetitive overshoot. A short proof test does not establish corona-free continuous or pulse operation.

#### Do not assume self-healing in the hybrid construction

The series combines metallized film and aluminum foil; the internal connection is not specified. Do not rely on self-healing or fail-open behavior; electrode stack, segmentation, internal series connection and fault-response data on request.

#### Usable frequency range

Voltage, capacitance, ESR, ESL, resonance, RMS current and cooling determine the usable frequency range. Use voltage and current versus frequency curves for the selected part and validate hot-spot rise.

#### Calculate pulse current from the actual waveform

For an ideal capacitor, I = C·dV/dt. Include overshoot, ringing and repetition, then apply the dV/dt, K0, peak and RMS current, energy and temperature limits of the selected part.

#### Ratings outside the standard range

For voltages outside 1,000–2,000 VDC, values below 1 nF or above 33 nF, or other lead spacings, request the part specification, drawing and qualification report. Do not extrapolate.

#### Control assembly and lead stress

Apply the PP/PE soldering limits to the actual construction and do not use reflow soldering. Keep lead-forming stress away from the epoxy interface, and validate cleaning, coating, vibration and thermal cycling.

### Part numbering

Example ordering code. Not every combination is available.

`B8 · 3A · 102 · J · Q · 1 · B0 · 180 · 105 · 055 · E · 0 · Y`

| Code | Meaning |
| --- | --- |
| B8 | Series code: PPS/CBB81 |
| 3A | Rated voltage code: 3A = 1,000 VDC; 3B = 1,250 VDC, 3C = 1,600 VDC, 3D = 2,000 VDC |
| 102 | Capacitance code: 102 = 1 nF; 103 = 10 nF |
| J | Capacitance tolerance: J = ±5%, K = ±10% |
| Q | Lead spacing: Q = 15 mm; T = 22.5 mm |
| 1 | Lead form: 1 = long straight, 2 = inner-bent, 5 = straight taped, 6 = bent taped |
| B0 | Lead length code: B0 = 20.0 mm |
| 180 | Body width: 180 = 18.0 mm |
| 105 | Body height: 105 = 10.5 mm |
| 055 | Body thickness: 055 = 5.5 mm |
| E | Environmental code: E = RoHS, F = RoHS and halogen-free |
| 0 | STE internal control code, first field |
| Y | STE internal control code, second field |

## Datasheets & approval documents

- [Datasheet: PPS/CBB81 series encapsulated high-voltage metallized polypropylene (PP) film capacitors — short-form datasheet (2023-10)](https://www.songtian-ste.com/documents/source-cn/%E9%87%91%E5%B1%9E%E8%86%9C%E7%94%B5%E5%AE%B9%E5%99%A8%E7%B3%BB%E5%88%97%E4%BA%A7%E5%93%81%E8%A7%84%E6%A0%BC%E4%B9%A6/MPP%E8%81%9A%E4%B8%99%E7%83%AF%E8%86%9C%E7%94%B5%E5%AE%B9%E5%99%A8/%E5%8C%85%E5%B0%81%E9%AB%98%E5%8E%8B%E9%87%91%E5%B1%9E%E5%8C%96%E8%81%9A%E4%B8%99%E7%83%AF%E8%86%9C%E7%94%B5%E5%AE%B9%E5%99%A8%28PPS%20CBB81%29%E7%AE%80%E7%89%88%E8%A7%84%E6%A0%BC%E4%B9%A6-202310.pdf) — PDF · Chinese · 2023-10 · 261 KB

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