This document is the user manual for B78108S and B78148S. It mainly introduces the features, uses, performance, installation methods and other information of the products
The EPCOS BC series RF chokes (models B78108S and B78148S) are high‑frequency inductors with a wide inductance range from 1 µH to 4700 µH and rated currents between 55 mA and 1200 mA. They feature a ferrite drum core, enamel copper winding and a flame‑retardant lacquer coating, and are RoHS‑compatible.
The document provides detailed ordering codes, impedance characteristics, color‑coding of inductance values, and packaging options such as axial or radial taping, ammo packs and reel packs. Important notes on handling, solderability, climatic testing and regulatory compliance are also included.
| Rated current | 55 to 1200 mA |
|---|---|
| Rated inductance range | 1 µH to 4700 µH |
| Core material | Ferrite drum core |
| Winding material | Enamel copper wire |
| Climatic category | 55/125/56 (-55 °C/+125 °C/56 days) |
| Solderability (wetting) | 235 °C, 2 s, 290 % wetting |
| Resistance to soldering heat | 260 °C, 10 s |
The BC series chokes are rated for currents from 55 mA up to 1200 mA.
Inductance values are encoded by colored bands on the component in accordance with IEC 60062.
They can be supplied taped, in ammo packs, or on reels, with axial or radial taping depending on the model.
Yes, the document states that the chokes are RoHS‑compatible.