This document is about the specification of PCA EPI B38 series SMD inductors, including the dimensions, inductance value, DCR, and temperature rise.
The EPI B38 Series from PCA Electronics consists of surface‑mount power inductors designed for high‑frequency switching converters such as buck and boost regulators, as well as output‑averaging filter applications. The series supports switching frequencies of 150 kHz, 200 kHz and 500 kHz and uses low‑loss material to maintain efficiency.
Key specifications include inductance values ranging from 0.5 µH to 37 µH, DC resistance from 0.004 Ω to 0.097 Ω, and current ratings up to 20 A. Mechanical tolerances are tight, with coplanarity limited to 0.005 in max and core loss of 37 mW (Vt1/Vt2) to 67 mW (Vt3). Dimensions are given in inches with standard tolerances.
| Switching Frequency | 150 kHz – 500 kHz |
|---|---|
| Maximum Inductance Change at Idc | 20 % max |
| Coplanarity Tolerance | 0.005 in max |
The inductance can change up to 20 % at DC current.
Coplanarity must be within 0.005 inches maximum.