B43501 is a long-life grade capacitor produced by EPCOS Germany. It is used in industrial and entertainment electronics for switch-mode power supplies and frequency converters. Its features are long useful life, high reliability and high ripple current capability, low equivalent series resistance ESR, high CU product, i.e. compact size.
This document describes the EPCOS B43501 series of snap‑in capacitors designed for long‑life operation up to 85 °C. It lists applications such as switch‑mode power supplies and frequency converters, and highlights features like low ESR, high ripple‑current capability, and various case sizes.
Technical data include rated voltage, capacitance ranges, leakage current, ESR limits, mechanical dimensions, terminal options, and packaging details. Ordering codes for standard, short, and three‑terminal versions are provided, along with test conditions and compliance information.
| Rated voltage | 160‑450 VDC |
|---|---|
| Capacitance range | 47‑2200 µF |
| ESR limit | ≤ 1.3 × initial specified limit |
| Useful life temperature | 85 °C |
| Failure rate | < 50 FIT |
The B43501 is rated for 160 VDC up to 450 VDC.
The long‑life version is specified for operation up to 85 °C.
The packaging is made of pure cardboard for ecological reasons.