Vol 7 Number 2. You cannot learn how to use a transistor by just staring at the datasheet. There is a schematic tool on the editor toolbar.

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Retrieved from " https: Driving a mA relay with a mA max transistor is pushing it though. All types have a maximum collector current of mA, bc1109 that the original Philips tentative data dated 4. After reading the comments, here is the question in a more mathematical way. Vol 7 Number 2.

BC family - Wikipedia

Now if I drive a BC with that output and put a 75ohms relay in a common emitter fashion then will the transistor be able to supply enough current to turn on the bc1109 Reverse diode across relay coil essential. This page was last edited on 15 Augustat There's a list left right on this page on the right.

I am not attaching any drawing as it is really a tiny circuit and can be visualized easily. By using our site, you acknowledge that you have read gc109 understand our Cookie PolicyPrivacy Policyand our Terms of Service. Views Read Edit View history. There is a schematic tool on the editor toolbar. BC is also "stone age".

BC datasheet - Specifications: Transistor Polarity: NPN ; Collector

Beta of 10 is low but acceptable. Can someone please tell me if Hc109 am theoretically all correct or not. This is the only way to become confident in transistors or else. From Wikipedia, the free encyclopedia. The datasheet is for engineers who already know what they want.

Home Questions Tags Users Unanswered. BC emitter to ground. I have PCB readymadewhich gives me a 2.

The BC is an example of bc019 modern low-cost member of this family, still in a through-hole package, while the BC is the Surface-mount version. Sign up using Email and Password.

BC109 Bipolar Transistor

Transistors are always very confusing to me. Post as a guest Name.

Initially in metal TO packages, the range expanded over time to include other package types, higher voltage ratings, and a better selection of gain h FE and h fe groupings, as well as complementary PNP types. Commercial transistors Bipolar transistors.

BC108 family

If I put an additional resistance in serial with the relay's coil, then I can bring down the current more. You cannot learn how to use a transistor by just staring at the datasheet.

Some manufacturers have specified their parts with a higher power dissipation rating P tot than others. Retrieved 2 August Sign up using Facebook. The above devices' type numbers may be followed by a letter "A" to "C" to indicate low to high gain h FE [3] groups see BC Gain groupings. I read and try to understand the specsheet always but never confident about nc109 understanding:

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