2013年10月31日 · What's behind this? How can the variety BC547 span the range of all the others? Does all that matter for this circuit?

2013年5月20日 · I know these all transistors has different hFE: 547 547A 547B 547C And this different hFE may affect the bias on critical circuitry. I have few transistors but can't read its value correctly which is confusing me!

2015年7月22日 · According to what I can tell from the NXP datasheet the BC547 and BC587 should be virtually identical except for the max power dissipation and thermal resistance caused by the different types of packages. Yet the spice parameters (which I can't decipher yet) are different and simulations with the two different parts gives marked differences. Why? Which …

2006年8月3日 · to keep the motor controller simple i wanted to use that pwm signal to drive the fets and to turn on one BC547c wich will ground the relais. Sow when in reverse the lights goes on on the car and the fan starts blowing on the fetss..

2019年2月2日 · Does anyone know what transistor in a TO-220 package would substitute for a BC547 and BC557? I have students knocking legs off these like crazy and would like to substitute with something a little beefier. Thoughts?

2020年12月17日 · Hello. I'm less than an amateur when it comes to electronics but I am persistent. Any help or direction would be the greatest x-mas present I've EVER had! I cannot find a simple explanation regarding the collector, base and emitter on the BC547C transistor. I know a certain type of MOSFET will...

The indicated -xxx are the last three digits of the 12NC ordering code.[1] ... BC547 SOT54 bulk, straight leads - -412 - BC547B BC547C Table 9. Packing methods ...continued The indicated -xxx are the last three digits of the 12NC ordering code.[1] ... [1] For further information and the availability of packing methods, see Section 12.

2013年5月23日 · Which is BC547, BC547B or BC547C among them? Confusing lot! Willen May 20, 2013

2023年9月16日 · Can i make a circuit (like a megaphone) I tried two designs but didn't work The components I used were The mic ,a 0.5 watt speaker ,a BC 547(bc547C V1 E) transistor, a 10k and 100k resistor, a 104 ceramic capacitor and a 3.7v battery.

2005年10月16日 · Sometimes circuits use high gain transistors where a BC547C or BC557C is needed, or higher voltage ratings where the TIP31C or TIP32C is rated for 100V. Learn the spec's for your standard transistors then use others if their ratings aren't high enough.