Rectifier Diodes with Repetitive Peak Reverse Voltage of Up to 1000V and Forward Surge Current of 350A at 60Hz/8.3ms

PublishTime： 2021-03-20 Article Source：Diotec

Replacing through-hole bridge rectifiers by four single SMD dicretes is often limited by a too low forward surge current rating (I_fsm) of potential candidates. The S8A to S8M Series rectifier diodes by DIOTEC offers a powerful solution in surface mount SMC package. Unlike similar parts made by competitors, these parts feature a comfortable I_fsm rating of up to 320A at 50Hz/10ms half sine waves, or even 350A at 60Hz/8.3ms. This allows replacement of through-hole bridges and thus saving of assembly costs wherever a high surge current is required, while average output current is in a lower range. The average forward current of 8A at maximum 100℃ terminal temperature would allow to build an equivalent 16A bridge by using four parts in bridge configuration.

At 500W input power and 230V mains, the rectifier stage is loaded just a bit higher than with 2A. Inrush current limitation is however often reduced to an absolute minimum effort for cost savings, which in contrast requires a very high I_fsm rating of the input bridge. As such, SMD versions are often not suitable. The S8A to S8M Series is closing this gap. The K and M types having 800V respectively 1000V are for 230V mains, while the G and J with 400V and 600V match to 110V supplies. The lower reverse voltage types A to D with 50V to 200V can be used for polarity protection purposes where Schottkys are not suitable, e. g. due to low leakage current requirements.

Features:

· Repetitive Peak Reverse Voltage of up to 1000V

· Average Forward Current of 8A

· Forward Surge Current of 320A (50Hz/10ms), respectively 350A (60Hz/8.3ms)

· DO-214AB/SMC package

· For automatic SMD assembly

Applications:

· Power Supplies

· Drive Inverters

· Fans and Pumps

Maximum ratings:

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