At 07:06 AM 8/5/2013, John Ferrell wrote: >As a hobby/academic level user I try to minimize the different types of >parts I keep in my personal parts inventory. I frequently parallel=20 >transistors (with matched emitter resistors) to gain more power=20 >handling capability. The question: Can I do the same with Fets?=20 >especially 2N7002's? Is their a need for the load balancing=20 >resistor? In the drain lead? In general, no ballasting resistors are required when paralleling=20 MOSfets, especially if they are functioning as switches. Its a=20 different situation if the FETs are running in the linear region - I=20 generally tend to match Vgs on the FETs that are paralleled if the=20 FETs are run in the linear region. I would have NO problem directly paralleling several 2N7002 FETs for=20 a switching application. Do be aware that you might need to install a low-value resistor (100R=20 or so) in series with (or a ferrite bead onto) the Gate lead of each=20 FET - these serve to eliminate parasitic HF oscillation. I now do=20 this as a matter of practise after being burned in the past. dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .