Transistor Cross Reference Replacement
Transistor cross reference replacement and guide is very important for every engineers and technicians because the data that you found in this guide can help you to find the exact replacement for the components that you are looking for such as transistor, fet, ic, diode, zener diode and etc. The most popular transistor cross reference replacement guide is the Philip ECG semiconductor master replacement guide. In the content you can find out all sort of the components specification. You can see the internal diagram of that particular components, pin out, voltage, replacement, block diagram and the component's layout.
The cost of this book is not expensive and if you are in the electronic repairing line, i highly recommend it. Without this guide i will be searching in the dark and waste my precious time. Not only that, the equipment also can't be repair due to unable to find the exact replacement. In this guide it will list out all sort of transistor data and specification which include the bipolar transistor, field effect transistor (fet), junction field effect transistor (jfet), signal transistors, high voltage transistor such as the horizontal output transistor, silicon power transistor, surface mount transistor, digital transistor and many more!
Though you can find a replacement from the smaller version of the transistor databook, the ECG master replacement guide provide better information and more reliable specification compare to the normal transistor substitution replacement book. The normal transistor subtitution book only show you the voltage (v), current (amp) and wattage (w) rating but the ECG master replacement guide show beyond than that such as the frequency , current gain and the diagram of that particular transistor that you are searching for.
There is one tip for you if you want to find a replacement for a transistor. If you are looking for replacement of signal transistor, a higher voltage, amp,and watt will do the job but not in the case if you want to find a replacement for horizontal output transistor. Higher voltage, ampere and wattage will cause complete destruction to the transistor because it is not easy to find an exact replacement for horizontal output transistor. Why the transistor blow even if it has a higher voltage, current and watt compare to the original transistor?. The real problem is in the switching time which we call it the storage and fall time. Different transistor have different spec, if you really want to find a replacement for horizontal output transistor make sure you look at the storage and fall time as well besides bigger voltage, current and wattage.
I have tested a transistor with the storage and fall time slightly out from the original specification and when i switch on the monitor it only worked for few hours before it became real hot and can burn your finger. When i substitute another transistor with the spec about the same as the original, the monitor work perfectly fine and when i use my finger to touch it, the transistor only got a little bit warmed which is normal. If possible get the exact replacement to avoid 'call back' from your customer.