2 - line filters, metal case, polyurethane potting, low leakage current, compact design, cost optimized construction, ENEC, UL, CUL approval, applications for switch-mode power supplies
The EPCOS 2‑line filters SIFI‑H are metal‑cased, polyurethane‑potted EMC filters designed for very high insertion loss in switch‑mode power supplies. They are available in several current ratings (up to 36 A) and case styles with tab or screw‑thread mounting.
The document provides construction details, ordering codes, dimensional drawings for three case styles, typical insertion‑loss curves, and extensive safety cautions for qualified personnel handling the filters.
| Rated voltage | 250 VAC |
|---|---|
| Rated frequency | 50/60 Hz |
| Test voltage line‑to‑line (2 s) | 1414 VDC |
| Test voltage line‑to‑case (2 s) | 2700 VDC |
| Rated temperature | 40 °C |
| Overload capability (thermal) | 3 min per hour or 15 × Ip; 30 s per hour 2.5 × Ip |
| Climatic category (IEC 60068‑1) | 25/100/21 |
The filter is rated for 250 VAC.