2SB778 DATASHEET PDF

Home Questions Tags Users Unanswered. You need to compare the specifications for each transistor based on their datasheets. Email Required, but never shown. Andy aka k 10 Sign up using Email and Password. BD datasheet Material of transistor: We can replace a resistor or capacitor with somewhat similar characteristics if same not available. Sign up or log in Sign up using Google.

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Soldering Tips Helpful Link: But National discontinued this part last year with no clear replacement. This is probably not the way to go unless there is a need for an LED bargraph in the circuit already. Octopart is not comprehensive. The transistors might be on separate dies for all I know. MikeJ-UK 5, 11 To see a list datassheet open positions, click here. That would more-or-less be an interpolation between 3dB values. This circuit uses the difference of two transistor currents to generate the log of the input over a pretty wide range.

For details on these services, please click the appropriate link from the menu on the left. There is no commitment that if you design it in to your circuit, you will be able to purchase it later.

For example, does not search Maxim-Direct, i. I can use LM array, but the specs are far worse. As usual, Maxim parts do not exist. In addition to supporting the various labs in the EL building, we also provide equipment and manual check-out and a wide range of electronic components for sale. Our People Search the directory for faculty or staff members. TI has a bunch of chips that implement log amps. Especially in this circuit, which lives and dies by transistor matching, the simulator is going to give a very optimistic performance estimate.

Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count.

Search the directory for faculty or staff members. Would you like to answer one of these unanswered questions instead? I tried adjusting the Hfe of the transistors and unless it was something like it kept a very clean log output. You can also see open positions in the department.

Roman has mentioned that component. You can find them here But the plant does not sell them directly. I had this idea for a quick and dirty log amp. TI still lists the part in their catalog, but designates it as obsolete.

Devices equivalent to the LM are now being made by another company: The chip has almost the same name: Two LMs can be stacked to get 60 dB range. Maxim direct is saying 15 weeks lead time for single parts. What is the new standard log amp circuit? TOP Related Posts.

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2SB778 DATASHEET PDF

Tojakora BC Hoja de especificaciones. If you are designing a PCD or Perf board with this component then the following picture from the BC Datasheet will be transistr to know its package type and dimensions. Current flows in through collector. A Transistors acts as an Amplifier when operating in Active Region.

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Other manufacturer searches related to 2SB Feedback on ha5ia from others who bought this item. Take a look at our Returning an item help page datashest more details. Please return any unwanted item, in original condition, within 30 days of receipt, and we will refund your payment in full, excluding return postage. So far as I can tell it is just a rant about not being able to find something. Is asking on how to fix a faulty circuit on topic? We do not ship orders at weekends or on bank holidays.

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2SB778-O Bipolar Transistor

Mukus Transistor C View larger image. B View larger image. HandyHowie 1, 1 7 D transistor datasheet arrows in the NPN and PNP d transistor datasheet symbols are on the emitter legs and point in d transistor datasheet direction of the conventional current flow when the device is in forward active mode. Transistor K Transistor D View larger image.

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