BC, BC, BC High Current Transistors NPN Silicon Features. bc bc bcpdf SizeK _motorola. bc bc bcpdf SizeK _philips. 25 Jun Product data sheet. Table 1. Product overview. Type number[1]. Package. PNP complement. NXP. JEITA. JEDEC. BC[2]. SOT SCA. 10 Oct DATA SHEET. Product specification. Supersedes data of Apr Oct DISCRETE SEMICONDUCTORS. BC; BC; BC

Author: Duzil JoJogrel
Country: Nigeria
Language: English (Spanish)
Genre: Technology
Published (Last): 18 August 2015
Pages: 462
PDF File Size: 1.81 Mb
ePub File Size: 9.40 Mb
ISBN: 465-9-72069-364-6
Downloads: 41308
Price: Free* [*Free Regsitration Required]
Uploader: Migore

The voltage at the emitter will closely track the voltage at the base, only 0. A forced beta of 20 is usually good. Since the output from the Arduino will be bc637 datasheet to 5 volt, and V BE can be treated roughly as a diode, you will have about 4. Look at this spread from the datasheet:.

RodrigoPeetz Yes, no one will blame you or bc637 datasheet less of cb637 for assuming that you can use the transistor in the way you wanted. The bc637 datasheet for the BC shows it as less eatasheet mV up to a collector current of mA.

bc637 datasheet Common emitter switch This is the traditional “Transistor-as-a-switch” configuration, and is similar to what you have right now.

The gain of the transistor is not well defined probably between 80 and It is better to add a series resistor on the LED bc637 datasheet the forward voltage of a blue LED is probably around 3V, so the resistor drops 2V and at datashwet it would have to bc637 datasheet about 91 ohms.


Essentially you’ll use one of these circuits: This is perhaps the easiest to understand, because it’s as intuitive as the common emitter switch, but you only bc637 datasheet to calculate the load resistor. Sign up using Facebook. Look at this spread from the datasheet: The transistor will draw the absolute minimum amount of base current necessary to keep the right amount of current flowing through the collector.

BC – BC NPN High Current Transistor

If you want to pass at most 20 mA through the collector, aim for 2 mA through the base, and you end up bc637 datasheet a base resistor of about 2.

Post as a guest Name. This is not the bc637 datasheet to bc637 datasheet it. Spehro Pefhany k 4 This is no omission from my part, and it is one of the benefits of this configuration: I’m glad you’ve datadheet the calculations, that’s a good start.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policybc637 datasheet that your continued use of the website is subject to these policies.

BC637 – BC637 NPN High Current Transistor

Thank you for the explanation, well i’m student in the area so i lack the bc637 datasheet. The current gain varies a lot depending on all sorts of things: That’s how I select transistors.


The goal is to drive enough current through the base to make this bc637 datasheet. SamGibson 9, 4 14 If your board has an unregulated input with a lot datashset ripple, you can use it directly.

Essentially you’ll use one of these circuits:. As you can see, there is no base resistor. This site uses cookies to deliver our bc637 datasheet and to show you relevant ads and job listings.

transistors – BC as switch with Arduino – Electrical Engineering Stack Exchange

I don’t have much experience with electronic components, and I would like to ask someone with more experience bc637 datasheet me to check bc637 datasheet my calculation is correct. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Bc637 datasheet up or log in Sign up using Google. Just to be clear, your suggested circuit will put way too much bc637 datasheet through the LED, and it will be poorly controlled. This is the traditional “Transistor-as-a-switch” configuration, and is similar to what you have right now.