LM386 Bass Boost Question

[CeaSaR]

I am looking to make some small gifts this year and have settled on the venerable LM386N-3. One
of the options on the datasheet shows a bass boost between pin 5 and pin 7, using a 0.033 uF cap
and a 10 kOhm resistor. Problem is, I cannot find the 0.033 uF cap on Mouser. What would I need to
change the 10 kOhm resistor to if I used a 0.33 uF cap? My mind is a blank right now and I need to
get the parts ordered soon.

See page 6 of the datasheet above for the available options.

Thanks in advance,
CeaSaR

[dyarker]

Or three 0.01uF in parallel and the 10K resistor. Given the tolerances of capacitors, it will be just as close as a single 0.033uF.

Cheers,

[sghioto]

Page 2 on the gain control section doesn't recommend anything smaller then 10K if pins 1 and 8 are not bypassed. I would keep the components as designed.
Seriously you can't find a .033uf cap from Mouser. I just checked their site and found 164 in stock, of different types and manufacturers. The Mouser part no. below should fill the bill.

667-ECQ-V1H333JL

Steve G

[CeaSaR]

Thanks guys. Didn't want to use multiples and for some bizarre reason, Mouser wouldn't show any 0.033 uF
caps either through search or the value selection when I went straight to the cap section. I tried 4 or 5 times.
Thought I was losing it.

Again, thanks.
CeaSaR

[dyarker]

Another thought ... if 0.033uF doesn't show on Mouser try 33nF or 33000pF; same value with the decimal point moved.

Cheers,

[CeaSaR]

I put in what Steve suggested. Lo and behold, there were many to choose from if I got rid of the
space between 0.033 and uF. Even the value selection worked. Strangeness...

CeaSaR

[k7elp60]

I have about 100 or more .033uF film capacitors. They are rectangle shaped 0.5" by 0.15" by .35 and have 1/2 inch leads. I would be happy to send you a bunch.
Ned

[CeaSaR]

I thank you for the kind offer Ned. They are only pennies apiece and I only need a few,
so I'm going to get them from Mouser.

CeaSaR