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General‑purpose polypropylene MKP pulse capacitors, not X2 rated Safety Capacitors

Sungho’s BMPP / BDMPP / BMPP series are:

  • MKP pulse capacitors

  • Intended for SMPS, snubbers, high‑frequency pulse circuits

  • Marked with capacitance + voltage + series code

  • Not marked X1, X2, Y1, Y2, etc.

  • Not certified as mains‑safety capacitors

Even though they are polypropylene and often high‑voltage, they cannot replace an X2 capacitor in EMI suppression across L–N.

  • SUNG HO / Sungho — Sungho Electronics Co., Ltd., a major South Korean manufacturer of film capacitors used in power supplies, EV systems, solar inverters, LED drivers, and industrial electronics.

  • MKP — Metallized Polypropylene film capacitor. MKP capacitors use polypropylene film as the dielectric and are known for low loss, high stability, and strong pulse performance.

  • BMPP / BDMPP / BMPP — A Sungho series of double‑metallized polypropylene film capacitors designed for pulse applications (SMPS, snubbers, SCR commutation, TV/monitor power circuits). They feature self‑healing film, low dissipation factor, and compact size.

  • If you see a part marked SUNG HO MKP BMPP, it means:

    A Sungho Electronics capacitor, using MKP (metallized polypropylene) dielectric, belonging to the BMPP/BDMPP pulse‑duty series.

    These are typically used in high‑frequency, high‑voltage pulse circuits, snubbers, SMPS, and similar power‑electronics applications.

  • Today
    SUNG HO MKP BMPP

    Short answer: SUNG HO = Sungho Electronics, a Korean capacitor manufacturer. MKP = Metallized Polypropylene film capacitor type. BMPP/BMPP(P) = Double‑Metallized Polypropylene Pulse Capacitor series made by Sungho.

    🧩 What each term means

    • SUNG HO / Sungho — Sungho Electronics Co., Ltd., a major South Korean manufacturer of film capacitors used in power supplies, EV systems, solar inverters, LED drivers, and industrial electronics.

    • MKP — Metallized Polypropylene film capacitor. MKP capacitors use polypropylene film as the dielectric and are known for low loss, high stability, and strong pulse performance.

    • BMPP / BDMPP / BMPP — A Sungho series of double‑metallized polypropylene film capacitors designed for pulse applications (SMPS, snubbers, SCR commutation, TV/monitor power circuits). They feature self‑healing film, low dissipation factor, and compact size.

    📦 Putting it together

    If you see a part marked SUNG HO MKP BMPP, it means:

    A Sungho Electronics capacitor, using MKP (metallized polypropylene) dielectric, belonging to the BMPP/BDMPP pulse‑duty series.

    These are typically used in high‑frequency, high‑voltage pulse circuits, snubbers, SMPS, and similar power‑electronics applications.

    🔧 If you want, I can decode a specific part number

    For example: BDMPP 400V 682K 7.5S 5 I can break down voltage, capacitance, tolerance, lead spacing, and package type.

    Would you like me to decode a specific code?

    What Temperature range are these?

    They are rated for –40 °C to +105 °C. This comes directly from Sungho’s own BMPP/MKP film‑capacitor specifications, which list:

    • Operating temperature range: –40 °C to +105 °C

    • Rated temperature: 105 °C

    • Climatic category: 40/105/21 (meaning –40 °C minimum, +105 °C maximum, 21‑day damp‑heat test)

    So any Sungho MKP BMPP capacitor you have will be safe to operate anywhere within –40 °C to +105 °C.

  • Extra context (useful for design work)

    • These are pulse‑duty polypropylene film capacitors, so they maintain stable capacitance and low dissipation across the full range.

    • The 105 °C limit is typical for MKP snubber/pulse capacitors; above this, polypropylene film loses stability and self‑healing performance.

    • If you’re using them near the upper limit (e.g., inside a PSU or SMPS), keep in mind that internal self‑heating adds to ambient temperature.

      🧩 What they are suitable for

      Sungho BMPP/MKP capacitors are typically used in:

      • SMPS primary snubbers

      • High‑frequency pulse circuits

      • SCR/triac commutation

      • DC link filtering (low‑power)

      • TV/monitor power boards

      They are not designed for direct connection across the mains.


    • Ideal for hobbyists, engineers, and professionals looking to enhance their electronic projects with top-tier components. Don't miss out on these versatile capacitors!