Fairchild Semiconductor Introduces STEALTH™ II Rectifiers
Fairchild Semiconductor introduced seven new STEALTH II fast-recovery diodes. These STEALTH II rectifiers feature fast reverse recovery and soft recovery characteristics that enable reduced MOSFET switching losses and EMI in continuous-current-mode (CCM) power factor correction (PFC) designs. The company claims that the alternate solutions provide snappy reverse recovery, but this is at the expense of EMI characteristics.
Fairchild’s STEALTH II rectifiers feature a low stored charge and soft recovery that minimize ringing and electrical noise in the power switching circuit, which, in turn, reduces overall EMI. By using Fairchild’s STEALTH II rectifiers, the company claims that the designers do not need to use a snubber circuit and can reduce the size of the EMI filter – making the overall solution more efficient, compact and less expensive.
Among the advantages of the STEALTH II diodes: energy efficiency through high speed switching (FFP15S60S: trr Max < 35ns @ IF = 4A) and low forward voltage drop (Vf < 2.6V); system reliability attained by soft recovery characteristics (FFP15S60S: tb/ta > 0.9); space-savings resulting from elimination of the snubber circuit and reduced EMI filter size.
The STEALTH II rectifiers utilize lead-free (Pb-free) terminals and have been characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020. All of Fairchild’s products are designed to meet the requirements of the European Union’s Directive on the restriction of the use of certain substances (RoHS).
The units are priced (each, 1000 pieces) between $0.48 to $1.81, with a delivery time of 10 weeks ARO.
