Where to get 220 M.ohm resistors?

Help Support GroupDIY:

RuudNL

Well-known member
Joined
Apr 26, 2009
Messages
2,481
Location
Haule / The Netherlands
I am looking for some (through hole) 220 M.ohm resistors, 0,25 or 0,5 Watt.
I tried already Mouser, Digikey, RS Components, Farnell etc.
Of course I could put resistors in series, but I would prefer a single resistor...
Any ideas?
 
Last edited:

RuudNL

Well-known member
Joined
Apr 26, 2009
Messages
2,481
Location
Haule / The Netherlands
For me the 0.5 Watt isn't important. As long as the resistance is (about) 220 M.ohms!
The voltage in a microphone won't be higher than 60 Volts.
The 0.25/0.5 Watt was just an indication of the form factor.
 

LevinGuitar

Well-known member
Joined
Jun 13, 2019
Messages
72
Small minimum order here:


What is wrong with the flat ones?
 

analogguru

Well-known member
Joined
Mar 25, 2007
Messages
532
Location
Vienna, Austria, Europe

Attachments

  • DIY-Resistor.jpg
    DIY-Resistor.jpg
    52.4 KB · Views: 20
Last edited:

Bo Deadly

Well-known member
Joined
Dec 22, 2015
Messages
2,726
Location
New Jersey, USA
DIY is the answer ;) :
This would not work very well for high value resistors. Even if you carefully cleaned the assembly, over time moisture, dust and grime would cause leakage currents significant enough to affect it's performance. And capacitance and inductance would be higher than that of a proper part.
 
Joined
Jun 15, 2010
Messages
17
I am looking for some (through hole) 220 M.ohm resistors, 0,25 or 0,5 Watt.
I tried already Mouser, Digikey, RS Components, Farnell etc.
Of course I could put resistors in series, but I would prefer a single resistor...
Any ideas?
Mouser appears to have a wide selection of values in 100M to 1G range - carbon film, and not that expensive.
 

RuudNL

Well-known member
Joined
Apr 26, 2009
Messages
2,481
Location
Haule / The Netherlands
The only one at can find on the Mouser site that comes close is this one (250 M.):

588-MOX-200002506FE

But this evening I got information from someone who maybe can get the value I am looking for (220M) from Taiwan.
I don't have a problem to buy a couple of hundreds...
 

Bo Deadly

Well-known member
Joined
Dec 22, 2015
Messages
2,726
Location
New Jersey, USA
I don't have a problem to buy a couple of hundreds...
This seems strange to me. Using a 220 Mohm resistor in a circuit is somewhat dubious because it could easily be unreliable if it is not interfacing with a part that has similar impedance. It would be a bummer to buy $500 worth of resistors only to find out later that the circuit behaves strangely and should have used an alternative design. What is the circuit? Post a schematic.
 

Latest posts

Top