Olin Lathrop wrote: > > Why? Even most jellybean NPN transistors will be fine for switching 30mA at > 35V. With the PIC running at 5V and a 4.3Kohm base resistor, you are only > asking for a gain of 30 from the transistor. Everything is will within spec > with comfortable margin. Because the LEDs are in parallel (forgot to mention that), so it's 300mA nominal, not 30mA. -- #ken P-)} Ken Coar, Sanagendamgagwedweinini http://Ken.Coar.Org/ Author, developer, opinionist http://Apache-Server.Com/ "Millennium hand and shrimp!" -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist