The MB8S is designed for single-phase full wave bridge rectification. It converts AC input voltage to pulsating DC, which is then smoothed by a filter capacitor to produce a regulated DC supply. The MB8S is ideal for small power supplies that require a compact SMD footprint.
Typical Application Circuit
A standard MB8S full wave rectifier circuit consists of four elements: the MB8S bridge rectifier, an AC input source, a smoothing capacitor, and the DC load. AC input connects to pins 1 and 3; DC positive output is available at pin 4; DC negative (ground) at pin 2.
AC Input: connect to pins 1 and 3 of MB8S
DC+ Output: pin 4 — connect to filter capacitor positive terminal
DC− Output: pin 2 — common ground reference
Filter Capacitor: select based on output ripple requirement
Max output current: 0.5 A at TA = 50 °C ambient
Surge Protection
The MB8S features a non-repetitive peak surge current (IFSM) of 35 A at 8.3 ms, providing excellent resilience against switch-on inrush current. The I²t rating is 5.0 A²s. These characteristics make the MB8S ideal for small transformer-based power supplies and switched-mode power supplies where surge capability is critical.
For applications requiring higher average current, consider paralleling two MB8S devices or upgrading to a higher-rated SMD bridge rectifier such as the DB107S.