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I have no idea what you’re asking.

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Every time you grab one from the junkbox it will have a different pinout. Started by Silverboy Today at 7: Gains, Frequency response, etc. I have few transistors but can’t read its value correctly which is confusing me! By continuing to use this site, you are consenting to our use of cookies.

In order to get the standard gain ratings, all you have to do is look at the datasheets. I think ” has large range of hFE to but ‘B’ or ‘C’ has small range of hFE like to or to Bear in mind too that the operating point of the transistor will vary with temperature, especially when only a single base-bias resistor is used.

I going buy these transistor by knowing which isA, B and C. For a better experience, please enable JavaScript in your browser before proceeding. They always have the new modern standard pinout. Please read them- ”. Then which is the aprox. Here’s how I would modify its bias to reduce the sensitivity to gain variation: Remember, google is your friend.

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There are so many variations of them. Except c547v those that “test” the semiconductor device, circuits of same TYPE are designed to perform equally well irrespective of variations in Device Parameters.

Hola RB, Talking about standards, is that new modern standard really standard as standards were expected to be and never were? Can you modify it to reduce the sensitivity to gain variation?

The only difference between the c47b one and the other two is the way the pins are bent. Willen C547n Member May 22, These days TO pack transistors and the few manufacturers who still make through hole transistors seem to have standardised pretty well on the CBE pinout looking from the front.

Click here to register now. A TO is a TO Started by rashan shrestha 54 minutes ago Replies: OpAmp circuit for temp sensing using diodes Started by Elerion Today at 1: Even different transistors with the same type number will have a range of hfe values.

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The BC are also available with selected groups of current gain but it is marked “” for an average gain of”” for an average gain of and ‘” for an average gain of at mA. These also have the new standard pinout.

Articles Top Articles Search resources. Ramussons Member May 20, Thread starter Willen Start date May 20, This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

Started by chemelec Today at 4: I know these all transistors has different hFE: I am not playing with words. Willen Well-Known Member May 20, Q1 is the gain-critical transistor in that circuit. Sure, they often have the same average hfe, but it will always be a little off. D547b to our site! BC5xx are terrible for pinouts. What bias arrangement do you have?

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