I am ordering some stuff from Tayda and want to know some general useful stuff like transistors, diodes, op amps , well you guys get the picture. I have some attiny85s on this order, and already have a few of them. I have plenty of LEDs, resistors, some bc337s and 547s, voltage regulators, various caps, a lm741 and a few 555 timers, and various other stuff.
I would like to keep it around $25 more and am looking for useful stuff that I can use with arduino and the attinys and just in general while I am tinkering. Think TV B gone and arduino on a breadboard type stuff.
The LM358 (two Op Amps) and LM324 (four Op Amps) are arguably better than the 741, as they can do input and output down to ground.
You might find comparators like the LM339 might come in handy, the outputs are open collector. Maybe ULN2003 or 2803, those are open collector inverter/drivers. With them, you can drive outputs using higher voltages, operating relays and solenoids up to 500mA.
One should always have an inductor or two on hand and one can never have too many pin headers. If you are getting stand alone chips you might want resonators or crystals.
Are 2n3904 npn and 2n3906 pnp transistors ok for general use when a transistor is called for? I also have most of what y'all listed. Half of the stuff I have in my cart I have no idea how to use so be ready for a lot more questions (lol). Oh, what inductors do you recommend and what are they for?
jonrobertd:
Oh, what inductors do you recommend and what are they for?
I've only really used inductors when playing with RF circuits and some power supply designs. There are lots of types & uses though. I imagine if/when you might need one, you'll know which one.
As far as the transistors go, are they ok for driving LEDs because I ordered a bunch of common cathode RGB LEDs and I hope they are ok for driving them.
I don't yet know but I found out about it here so I will let you know.
On a side note, I ordered some free samples from Texas Instruments and found out even shipping Fedex is free. Unless they COD delivery, anyone ever got any samples from them before?
I have had great service from Tayda. When I make an order, they ship the next day, and I get it in the mail 8 days later. For a little over $5 for shipping, I'm impressed. It costs me that much to ship stuff from Mouser.
jonrobertd:
Are 2n3904 npn and 2n3906 pnp transistors ok for general use when a transistor is called for? I also have most of what y'all listed. Half of the stuff I have in my cart I have no idea how to use so be ready for a lot more questions (lol). Oh, what inductors do you recommend and what are they for?
2n3904 and 2n3906 are old low current transistors, good for switching up to 10mA, usable up to 100mA if you don't mind the high worst-case saturation voltage. BC337 and BC327 (which I believe you already have) are good from 10mA to about 500mA, and usable down to 1mA if you don't mind the reduced current gain. So for most Arduino applications, BC337/BC327 is more suitable. BC547 is a low current transistor like the 2n3904 but better (lower saturation voltage). So your BC546 and BC337 cover the range, and you don't need 2N3904 as well.
If you don't have them already, consider getting some general purpose silicon diodes such as 1N4148, and Schottky diodes such as BAT43 or BAT85. Also N-channel power mosfets, and mosfet driver chips such as MCP1407.
Regarding inductors, there are so many different values and current ratings, and relatively little need for them, that I don't bother keeping any in stock.
Before you place your order from Tayda be sure to check their Facebook page Tayda Electronics they frequently offer a 15% discount code.
I just placed an order Friday the 23rd. and it was shipped the 24th, will be here this week. Also you can request parts they don't carry on their Facebook page. Just thought I'd mention this.