The 600 mA RETs are based on Nexperia's performance-based low VC saturation BJTs that have a good current amplification. This gain stays high at high-collector currents, which is very important because less base energy is required so the transistor can more easily be turned on even at high load currents. Also, the residual voltage across the switch and the ON status is lower compared to a standard transistor; overall they achieve much better power efficiency. In use, it is important that as little heat as possible is generated in the load path transistor, so again, it is useful if the transistor has good current amplification (hFE) which does not degrade and improves with temperature overload current. Another benefit of the R1/R2 ratio of the relative tight tolerance resistors for RETs with current values above 100 mA is that at +/- 10%, they are three times more accurate than other products. This enables the input voltage safety margin to be reduced.