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'LIVEWIRE?' · 16th Nov 2017, 2:27 pm

These are TO-220 plastic power Transistors. All I know about the Vf is that 614mV was indicated on my Chinese Tester(One of those frequently advertised on eBay for about £10, which tests Caps., Resistors, Diodes & Transistors). With my DMM the voltage readings I get fall away rpidly within a minute or so of applying power to the OSU, so I can't answer the question, except tha 0.6v as is well known is thenormal Vbe for a silicon transistor.

16th Nov 2017, 2:27 pm	#44
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: A13TA Transistors-odd readings on DMM These are TO-220 plastic power Transistors. All I know about the Vf is that 614mV was indicated on my Chinese Tester(One of those frequently advertised on eBay for about £10, which tests Caps., Resistors, Diodes & Transistors). With my DMM the voltage readings I get fall away rpidly within a minute or so of applying power to the OSU, so I can't answer the question, except tha 0.6v as is well known is thenormal Vbe for a silicon transistor.