# Rectifier Failure Analysis


A rectifier is a non-linear component that converts ac to dc. Rectifiers typically use non-linear devices such as diodes of thyristors. These devices permit the flow of current in only one direction. 3 phase ac drives typically use a 6 pulse bridge A rectifier is a non-linear component that converts ac to dc. Rectifiers typically use non-linear devices such as diodes of thyristors. These devices permit the flow of current in only one direction. 3 phase ac drives typically use a 6 pulse bridge rectifier with thyristors.

Both dc and ac drives need a rectifier. In a dc drive, the rectifier converts ac to dc for the motor. In the ac drive, the rectifier converts the ac to dc for the inverters that eventually produce the variable frequency, variable voltage ac for the motor. The rectifier takes 3 phase sinusoidal ac and chops out the positive sections for each phase to produce dc. The dc voltage has triangular shaped sections. The dc current has sine shaped portions. The dc voltage is 1.35 times the RMS ac voltage. To conserve power in and out, the dc current is 0.816 times the ac line current.


## Pages

- [Failure Analysis of STMicroelectronics STW37N60DM2AG 600V MOSFETs](https://gideonlabs.com/posts/failure-analysis-stmicroelectronics-stw37n60dm2ag-600v-mosfets/index.md)
- [Failure Analysis on 1N645 Silicon Rectifier Diodes](https://gideonlabs.com/posts/failure-analysis-on-1n645-silicon-rectifier-diodes/index.md)
- [On Semiconductor SS16 Schottky Rectifier](https://gideonlabs.com/posts/on-semiconductor-ss16-schottky-rectifier/index.md)
- [Vishay SS26 Surface Mount Schottky Barrier Rectifiers](https://gideonlabs.com/posts/vishay-ss26-surface-mount-shottky-barrier-rectifiers/index.md)
- [Vishay ES2D SM Rectifier](https://gideonlabs.com/posts/vishay-es2d-sm-rectifier/index.md)
- [Rectifier Assembly Rotors](https://gideonlabs.com/posts/rectifier-assembly-rotors/index.md)
- [JanTXV1N821 Diode](https://gideonlabs.com/posts/jantxv1n821-diode/index.md)
- [SCR FP25001P1 or Thyristor Failure Analysis](https://gideonlabs.com/posts/failure-analysis-of-scr-or-thyristor/index.md)
- [ST Microelectronics BTA06 Triac Failure Analysis](https://gideonlabs.com/posts/failure-analysis-on-triac-or-scr/index.md)
- [Triac Failures](https://gideonlabs.com/posts/triac-failures/index.md)
- [Shorted PX6A07 Silicon Rectifiers](https://gideonlabs.com/posts/shorted-px6a07-silicon-rectifiers/index.md)
- [Silicon Rectifier PX6A07](https://gideonlabs.com/posts/silicon-rectifier/index.md)