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Minimum and maximum values are usually given.
2SC9014 Datasheet, Equivalent, Cross Reference Search
During an avalanche, electrons in the P-N transition regions are accelerated to energies so high that they hit bound electrons with enough force to free them, creating additional charge carriers and greatly multiplying the transistor current.
In an enhancement type device, it’s an off-state current. At the transisor voltage, also called a breakdown voltage BVelectrons begin to avalanche in the transistor. More time is spent figuring out which one to replace and, sometimes, what to replace it with! Actual circuit gain depends on other components. One measure of gain, called h FEis often used for comparing transistors.
If you don’t have that particular type, a transistor cross-reference guide can sometimes help you to find a compatible, generic part.
Choose a substitute with a rating at least as high as the original. Bipolar junction transistors BJT s are the most common variety of transistor.
This rating is used primarily with JFETs. The original transistor might need special ordering, or be discontinued and unavailable.
In that case, the product’s Service Manual or Parts List might provide you with the transistor type. However, the transistor’s data sheet will show you that. Maximum current is the maximum continuous collector current I C that a transostor can withstand without permanent damage.
Small, TO or TO transistors, depending on their fabrication, can handle between about and mA. You can organize the transistors into groups of drawers, each dedicated to a particular transistor outline. The following electrical specs are important when choosing a substitute BJT.
Current gain trandistor off at higher frequencies, so a high-gain transistor can deliver a wider frequency response than a low-gain transistor.
For a depletion-type FET, the gate-source bias voltage might be 0 V i.
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Select a substitute with the same general range of values. So, altogether, there are six types of field-effect transistors. They also have double the input voltage drop since there are two semiconductor junctions in series.
There are three breakdown voltages: Some TO datasehet are shown here: Then, when you need to pick a substitute for an original transistor, you can quickly home in on all your potential candidates. BV GSS – the transsitor voltage between the Gate and the Source terminals when the drain is short-circuited to the source.
If you install the wrong polarity, the sandwich won’t work. It’s a maximum current rating so choose a substitute with a rating at least as high as the original.
One of the following breakdown voltages is usually included in the specifications for a FET: Just make sure to compare apples with apples. You’ll find that fewer devices need to be stocked, and turnaround time can be reduced.
Data sheets often specify a minimum or typical value of 2ssc9014 FEor else a range of values that applies at a certain collector current I C.
You can use either of the above voltages when comparing FETs. It’s not a good idea to substitute a Darlington transistor for a non-Darlington type, or vice versa.
You can find transistor specs in data sheets available online.
V CB – the maximum voltage across the Collector-Base terminals V CE – the maximum voltage across the 2ac9014 terminals V EB – the maximum voltage across the Emitter-Base terminals In each of these ratings, the 3rd terminal is assumed to be electrically open unconnected.
Be sure to substitute a FET of the same type as the original. A junction transistor is a sandwich of “N” and “P” type semiconductors.
2N / BC / PN / 2N NPN Transistor – NTEAP
The type number is often printed on the transistor, although product manufacturers sometimes have their own part numbers printed instead. Heat sinks and fans increase the ability of trajsistor transistor to dissipate heat.
The first spec to consider is the Tranwistor Outline. It’s transiwtor direct current that flows into the drain terminal when the gate to source voltage is zero.
This is the only spec you can actually see. One of the following breakdown voltages is usually included in the specifications for a FET:. 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.
Maximum Power, called P Dis the overall power a transistor can dissipate, through heat, without burning up.