2SC9014 PDF

Kazimuro First pair of preamp transistors voltages were good but the second pair were way off, right channel one of course. This circuit runs at very low collector voltage. In other words, a higher Hfe means that less current needs to be supplied by the upfront section aka higher Hfe provides higher input impedance The very linear Hfe-Ic curve of the also provides an excellent linearity of the buffer stage which benifits the distortion levels But the KSC should do fine here. So KSC should be good enough.

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Fejora But if the original transistor has a high gain, try to match it. If the lead arrangement of a small replacement transistor differs from that of the the original, you can sometimes bend the transistor leads across one another to route them into the correct holes in the circuit board.

BV DSS — the breakdown voltage between the Drain and the Source terminals when the gate is short-circuited to the source. Knowing how to substitute an alternate transistor type can speed up your repair, or make an otherwise impossible repair possible. Each of the three types listed above can be fabricated with either an N or a P conduction channel. Choose a substitute with a rating at least as high as the original. Current gain falls off at higher frequencies, so a high-gain transistor can deliver a wider frequency response than a low-gain transistor.

De-soldering and replacing a transistor takes very little time. They also have double the input voltage drop since there are two semiconductor junctions in series. For a depletion-type FET, the gate-source bias voltage might be 0 V i. In each of these ratings, the 3rd terminal 2cs assumed to be electrically open unconnected. You can find transistor specs in data sheets available online. Maximum Power, called P Dis the overall power a datawheet can dissipate, through heat, without burning up.

Some TO numbers are shown here:. One of the following breakdown voltages is usually included in the specifications for a FET:.

Transistor Substitution Field-effect transistors come in three basic types: Bipolar junction transistors BJT s are catasheet most common variety of transistor. Be sure to substitute a FET of the same type as the original. Minimum and maximum values are usually given. V CB — the maximum voltage across the Collector-Base terminals V CE — the maximum voltage across the Collector-Emitter terminals 2cs EB — the maximum voltage across the Emitter-Base terminals In each of these ratings, the 3rd terminal is assumed to be electrically open unconnected.

BV GSS — the breakdown voltage between the Gate and the Source terminals when the drain is short-circuited to the source. Then, when you need to pick a substitute for an original transistor, you can quickly home in on all your potential candidates.

There are three breakdown voltages: So, altogether, there are six types of field-effect transistors. Pick a substitute FET with a rating at least as high as the original. Actual circuit gain depends on other components. The first spec to consider is the Transistor Outline. TOP Related Posts.

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