Please note: "pF" (picofarads) are the same as mmf or mmfd (micro-micro farads). "uF" is the same as "MF" or "MFD" (as listed in some older units), all mean "microfarad". Nanofarads are 1000 times the size of a picofarad, and 1/1000th the size of a microfarad, eg: .047 uF = 47 nF = 47,000 pF.Nanofarads are usually seen in European equipment. In old units, capacitors were usually made in increments of 5 , .05 or .005 uF. Later this was replaced by the "preferred value" system (where values are such that 10% tolerances just overlap). It's OK to replace, for example, a .05 capacitor with a .047, a .03 with a .033, a 30 uF with a 33 uF or 40 uF with 47 uF. In the case of larger capacitors (electrolytics) the original tolerances in old equipment was normally very broad (as much as -20 +100 %). capacitors Capacitor Bargain Bin capbarbin NOS Capacitors Ceramic Disc Capacitors cerdiscap Clamp Mount Capacitors clammounandt Twist-Lock Electrolytics twisel Electrolytic Capacitors 25 to 160V elcap25to16 Electrolytic Capacitors 300 to 600 volt elcap300to60 Sprague 715P Orange Drop Polypropylene sprag71ordro Mallory 150 Series DC Film Capacitors mallory150caps CDE Polypropylene Film Capacitors cdecaps Silver Mica Capacitors silmiccap Polystyrene Capacitors polcap Xicon Polypropylene xicpol Triode Electronics Inc. 5633 W. Irving Park Road Chicago IL 60634 USA Ph 773-427-8823 (773-HAS-TUBE) Fax 773-327-5652 Open 10:30 AM to 5 PM CT Monday-Tuesday-Thursday-Friday