650V fast recovery diodes for faster recovery or lower Vf

Author: EIS Release Date: Jul 19, 2022

Rohm has developed its 4th generation 650V fast recovery diodes (FRDs), balancing forward voltage and reverse-recovery time for high-power industrial and consumer equipment including air conditioners and electric vehicle charging stations.

 

Rohm fast recovery power diodes graphRFL series (right) is nominally low forward voltage and reduces Vf by ~3.2% and trr by ~8.3% compared with the existing RFN series.

 

RFS series (right), nominally high-speed, reduces Vf by ~17.9% compared with the existing RFUH series.

 

Right now, there are four parts, with more to follow including automotive parts.

 

• RFL30TZ6S 30A
• 1.5Vf, 55ns,  5μA leakage
• RFL60TZ6S 60A
• 1.5Vf 75ns,  10μA leakage
• RFS30TZ6S 30A
• 2.3Vf, 35ns,  5μA leakage
• RFL60TZ6S 60A
• 2.3V, 55ns,  10μA leakage

Rohm fast recovery power diodes noise“Furthermore, ultra-low noise diode recovery characteristics are achieved,” (left) according to the company.

 

All can be operated with junctions up to 170°C, and come in TO-247 (TO247GE-2L) packaging.

 

Rohm sees them being used as free-wheeling diodes in three phase inverters, bridge rectifiers on the secondary side of fast switching isolation transformers and as fly-back diodes in power factor correctors.

 

The parts are available for purchase now through Digi-Key, Mouser and Farnell.