# MPP/CBB21 Series Metallized Polypropylene Film Capacitors

> General-purpose epoxy-dipped metallized polypropylene film capacitors for DC, AC, high-frequency and pulse circuits. 100–630 VDC, 0.01–3.3 µF.

- Series code: MPP/CBB21
- Product line: [Film capacitors](https://www.songtian-ste.com/en/products/film-capacitors/) › Polypropylene film capacitors
- Part numbers: 2,133 · [part list (JSON)](https://www.songtian-ste.com/data/parts/cbb21.json)
- Page: https://www.songtian-ste.com/en/products/film-capacitors/cbb21/
- Chinese version: https://www.songtian-ste.com/zh/products/film-capacitors/cbb21/
- [Ask AI about this series](https://www.songtian-ste.com/en/products/film-capacitors/cbb21/?ask=Help%20me%20choose%20a%20part%20from%20the%20STE%20MPP%2FCBB21%20series.)

## Key specifications

| Parameter | Value |
| --- | --- |
| Rated voltage | 100 / 250 / 400 / 630 VDC |
| Capacitance | 0.01–3.3 µF |
| Construction | Metallized PP, epoxy-dipped |
| Tolerance | ±5% / ±10% |
| Lead spacing | 7.5–27.5 mm |
| Operating temperature | −40 °C to +105 °C |

## Engineering details

### Overview

Metallized polypropylene film capacitors with non-inductive winding and epoxy-resin dip coating, for DC, AC, high-frequency and pulse circuits. Rated 100, 250, 400 and 630 VDC, 0.010–3.3 µF, J ±5% or K ±10%. Designed for frequencies up to 100 kHz. Lead spacing 7.5–27.5 mm. Operating temperature −40 °C to +105 °C.

#### Series features

- Non-inductive metallized polypropylene winding with epoxy-resin dip coating
- Rated 100, 250, 400 and 630 VDC; 10 nF to 3.3 µF
- Dissipation factor tan δ ≤0.1% at 1 kHz
- Designed for DC, AC, high-frequency and pulse circuits up to +105 °C

#### Typical applications

- DC filtering, coupling, timing and energy-transfer circuits
- Pulse and commutation circuits (dV/dt, peak-current and lifetime data on request)
- High-frequency filtering; validate ESR, RMS current and temperature rise
- AC circuits (permissible voltage versus frequency on request)

### Specifications

|   |   |
| --- | --- |
| Product type | General-purpose epoxy-dipped metallized polypropylene film capacitor for DC, AC and pulse circuits |
| Construction | Metallized polypropylene film · non-inductive winding · epoxy-resin dip coating |
| Rated DC voltage | 100 · 250 · 400 · 630 VDC |
| Capacitance range | 0.010–3.3 µF, depending on voltage and body size |
| 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, C ≤0.33 µF | ≥50,000 MΩ at 100 VDC, 60 s, 20 °C |
| Insulation resistance, C >0.33 µF | Time constant ≥15,000 s at 100 VDC, 60 s, 20 °C |
| Voltage proof, terminal to terminal | 1.6 × 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 versus frequency, waveform and temperature limits on request |
| Temperature coefficient of capacitance | Negative, with small capacitance change |
| Safety class | No X/Y class and no mains-suppression approval; do not use across the line or line to earth |
| Body dimensions | W 10–31 · H 8.5–24.5 · T 5–14.5 mm, depending on voltage and capacitance |
| Lead spacing | 7.5 · 10 · 15 · 20 · 22.5 · 27.5 mm, ±1.0 mm |
| Lead diameter | 0.6 mm at 7.5 / 10 mm spacing · 0.8 mm at 15–27.5 mm spacing · ±0.05 mm |
| Lead forms and packing | Long straight · inner-bent · straight taped · bent taped |
| Taping | Tape dimensions specified for F = 7.5 / 10 / 15 / 20–22.5 mm; taping of 27.5 mm parts on request |
| 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: storage humidity and shelf life · voltage and current versus frequency, impedance and resonance data · dV/dt, peak current, K0, repetitive duty and RMS current · capacitance-temperature curve · endurance, pulse-life, overload, 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 | Construction / tolerance | Lead / land pattern | Notes |
| --- | --- | --- | --- | --- | --- |
| J · 7.5 mm | W 10 · H 8.5–10 · T 5–6.5 mm | 100 / 250 VDC · 0.010–0.10 µF | Metallized PP · J/K | P 7.5 ±1.0 · d 0.6 ±0.05 mm | Compact size for low-voltage, low-value parts. |
| N · 10 mm | W 13 · H 8.5–12.5 · T 5.5–8.5 mm | 100–630 VDC · 0.010–0.33 µF, depending on rating | Metallized PP · J/K | P 10 ±1.0 · d 0.6 ±0.05 mm | — |
| Q · 15 mm | W 18 · H 10.5–17.5 · T 7–10 mm | 100–630 VDC · 0.068–1.0 µF, depending on rating | Metallized PP · J/K | P 15 ±1.0 · d 0.8 ±0.05 mm | For high-frequency use, check dV/dt, peak and RMS current and temperature rise. |
| S · 20 mm | W 23 · H 17.5–19.5 · T 9.5–11.5 mm | 100–630 VDC · 0.47–2.2 µF, depending on rating | Metallized PP · J/K | P 20 ±1.0 · d 0.8 ±0.05 mm | Body dimensions: see part drawing. |
| T · 22.5 mm | W 25 · H 19.5 · T 10.5 mm | 630 VDC · 0.68 µF | Metallized PP · J/K | P 22.5 ±1.0 · d 0.8 ±0.05 mm | Other values at 22.5 mm lead spacing: availability on request. |
| V · 27.5 mm | W 31 · H 17.5–24.5 · T 9–14.5 mm | 100–630 VDC · 1.0–3.3 µF, depending on rating | Metallized PP · J/K | P 27.5 ±1.0 · d 0.8 ±0.05 mm | Largest body; check current, thermal, vibration and board-support data per part number. |

### Selection guide

Start with the waveform and voltage basis: the series is DC-rated; AC, high-frequency and pulse use need additional limits. Then check capacitance, dV/dt, current, self-heating, lifetime and dimensions.

1. **Define the actual voltage waveform**
   Specify DC bias, AC ripple, frequency, duty cycle, polarity reversal, start-up and abnormal transients. Use only a DC or AC rating stated for the selected part number.
2. **Select voltage and capacitance**
   The series covers 10 nF–3.3 µF at 100/250/400/630 VDC. For any other voltage, value or tolerance, request the part specification.
3. **Calculate pulse and current stress**
   Convert the waveform to dV/dt, Ipk = C·dV/dt, repetitive energy and RMS current, and check them against the dV/dt, K0, ESR or impedance, Irms and peak-current limits of the selected part number; do not rely on the 100 kHz figure alone.
4. **Check temperature rise and lifetime**
   Calculate dielectric and ESR 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 and temperature derating, and dry-heat, pulse and humidity life data, on request.
5. **Confirm construction and assembly**
   Match the part number to voltage, capacitance, tolerance, W/H/T, lead spacing, lead form, packing and soldering profile. Do not use reflow soldering; validate cleaning, coating, vibration and lead forming.

### Design notes

#### DC ratings apply to DC only

The datasheet gives only 100–630 VDC ratings. AC, ripple and pulse use need permissible voltage versus frequency, waveform, temperature and lifetime data; do not convert DC to AC with a generic ratio.

#### Usable frequency range

Capacitance, voltage, ESR, lead inductance, RMS current and cooling determine whether a part can operate at a given frequency. Check impedance and resonance, and validate hot-spot rise on the final board.

#### Calculate pulse current from the actual waveform

For an ideal capacitor, I = C·dV/dt. Calculate peak and RMS current from the actual edge, overshoot and repetition rate, then apply the dV/dt, K0, Ipk, Irms and temperature limits of the selected part.

#### Do not use MPP/CBB21 as a safety capacitor

The series has no X/Y approval. Across-the-line, line-to-earth and isolation-barrier positions require an IEC 60384-14 capacitor with a valid agency approval.

#### Ratings outside the standard range

For other voltages, values below 10 nF or above 3.3 µF, or other lead spacings, request the part specification, drawing and qualification report. Do not extrapolate from the nearest value.

#### Control assembly and mechanical stress

Apply the PP/PE soldering limits to the actual construction and do not use reflow soldering. Support larger bodies, 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.

`B2 · 2G · 104 · J · N · 1 · B0 · 130 · 105 · 060 · E · 0 · Z`

| Code | Meaning |
| --- | --- |
| B2 | Series code: MPP/CBB21 |
| 2G | Rated voltage code: 2G = 400 VDC; 2A = 100 VDC, 2E = 250 VDC, 2J = 630 VDC |
| 104 | Capacitance code: 104 = 100 nF |
| J | Capacitance tolerance: J = ±5%, K = ±10% |
| N | Lead spacing: N = 10 mm; J = 7.5, Q = 15, S = 20, T = 22.5, V = 27.5 mm |
| 1 | Lead form: 1 = long straight, 2 = inner-bent, 5 = straight taped, 6 = bent taped |
| B0 | Lead length code: B0 = 20.0 mm |
| 130 | Body width: 130 = 13.0 mm |
| 105 | Body height: 105 = 10.5 mm |
| 060 | Body thickness: 060 = 6.0 mm |
| E | Environmental code: E = RoHS, F = RoHS and halogen-free |
| 0 | STE internal control code, first field |
| Z | STE internal control code, second field |

## Datasheets & approval documents

- [Datasheet: MPP/CBB21 series encapsulated 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%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%28MPP%20CBB21%29%E7%AE%80%E7%89%88%E8%A7%84%E6%A0%BC%E4%B9%A6-202310.pdf) — PDF · Chinese · 2023-10 · 269 KB
- [Datasheet: CBB21X series miniature encapsulated metallized polypropylene (PP) film capacitors — short-form datasheet (2023-10)](https://www.songtian-ste.com/documents/source-cn/%E5%B0%8F%E5%9E%8B%E5%8C%85%E5%B0%81%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%28CBB21X%29%E7%AE%80%E7%89%88%E8%A7%84%E6%A0%BC%E4%B9%A6-202310.pdf) — PDF · Chinese · 2023-10 · 239 KB

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