1.5uF tantalum is a standard value. They're all over the place - including eBay. Lacking a local source, and if you're only trying the circuit out before committing, two 3.3uF caps in series would get you close. Or you could source a trim cap and tune your circuit. For a dew heater, such precision is not needed. Allied, Newark or Sprague direct are good sources. Good luck, Darrell Spencer ________________________________ From: az-observing-bounce@xxxxxxxxxxxxx on behalf of Bob Christ Sent: Fri 1/23/2009 8:01 AM To: az-observing@xxxxxxxxxxxxx Subject: [AZ-Observing] Need a pointer please I have been unsuccessful in my search to buy a 1.5µF 20V Tantalum electrolytic capacitor in the Valley. I have tried the usual suspects (Radio Shack, Fry's) to no avail, and my Google searches have not been fruitful. Does anyone know of a business in the valley that might sell such a component? The capacitor is a critical part in a PWM (pulse width modulator) circuit that I am building to efficiently supply juice to a dew heater strip. The things we do to keep ourselves occupied astronomy wise when the skies are bad. Thanks. Bob -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list. This communication, including any attachments, may contain information that is proprietary, privileged, confidential or legally exempt from disclosure. If you are not a named addressee, you are hereby notified that you are not authorized to read, print, retain a copy of or disseminate any portion of this communication without the consent of the sender and that doing so may be unlawful. If you have received this communication in error, please immediately notify the sender via return e-mail and delete it from your system. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.