STR-A6131

AC DC Converters, Offline Switchers Overview

The STR-A6131 is an off-line primary switcher manufactured by Sanken Electric, designed for low-power switching mode power supplies. It integrates a Power Regulator Controller (PRC) with a high-voltage power MOSFET in a single package. The device utilizes pulse rate control (PRC) technology to regulate output voltage and current. It is housed in an 8-pin DIP package and supports operation within a temperature range of -20 °C to 125 °C.

AC DC Converters, Offline Switchers Feature Summary

• Integrates a PRC controller with a high-voltage power MOSFET
• Utilizes pulse rate control for efficient regulation
• Designed for low-power off-line applications

AC DC Converters, Offline Switchers Applications

• Low-power off-line switching mode power supplies
• Flyback converter designs
• Primary side regulation circuits

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific manufacturer source when procuring, as Allegro MicroSystems also lists this part number with different specifications. Confirm that the component matches the Sanken Electric datasheet for Off-Line PRC Controllers with Integrated Power MOSFET. Ensure the package type corresponds to PDIP8 or DIP8 as documented in official Sanken materials to avoid functional mismatches.

AC DC Converters, Offline Switchers Selection Notes

Select the STR-A6131 for applications requiring integrated control and switching in low-power offline topologies. The PRC method offers advantages in light-load efficiency compared to traditional PWM. Designers should account for the thermal characteristics associated with the integrated MOSFET and ensure the input voltage range aligns with the controller's operational limits defined in the technical documentation.

AC DC Converters, Offline Switchers Part Context

This component belongs to Sanken Electric's STR series of off-line controllers. These devices are characterized by the integration of control logic and power switching elements to reduce external component count. The STR-A6131 specifically targets low-power segments, distinguishing itself from higher-power PWM variants within the same product family through its pulse rate control architecture.

AC DC Converters, Offline Switchers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.