Mar 4, 2004 #1 pisoiu Advanced Member level 3 Joined Dec 31, 2002 Messages 750 Helped 43 Reputation 86 Reaction score 21 Trophy points 1,298 Location Romania Activity points 7,883 parasitic impedance Does anyone have any idea about the value of the parasitic impedance and parasitic capacitance of a 0 ohm resistor in 1206, 0805 and 0603 smd package?
parasitic impedance Does anyone have any idea about the value of the parasitic impedance and parasitic capacitance of a 0 ohm resistor in 1206, 0805 and 0603 smd package?
Mar 4, 2004 #2 E eecly Member level 2 Joined Feb 25, 2004 Messages 47 Helped 2 Reputation 4 Reaction score 0 Trophy points 1,286 Activity points 356 hi, You can measure S-parameters of the 0R resistor using network analyzer and model it yourself by using the measurement eecly
hi, You can measure S-parameters of the 0R resistor using network analyzer and model it yourself by using the measurement eecly
Mar 4, 2004 #3 pisoiu Advanced Member level 3 Joined Dec 31, 2002 Messages 750 Helped 43 Reputation 86 Reaction score 21 Trophy points 1,298 Location Romania Activity points 7,883 eecly, thank you. I know how I can measure it, but I do not have such equipment. My question was if somebody knows approx. values from experience/previous measurements.
eecly, thank you. I know how I can measure it, but I do not have such equipment. My question was if somebody knows approx. values from experience/previous measurements.
Mar 4, 2004 #4 A AL0117 Full Member level 3 Joined Jul 25, 2003 Messages 178 Helped 10 Reputation 20 Reaction score 3 Trophy points 1,298 Location dracu-la-nd Activity points 1,935 As a rule of thumb u can use the following model (I use this usually) * Cp * ,--------||-----------. * | | * | | * | | * | | * | | * o---o---L__|----((((------o----o * | R L | * | -- * Cs-- -- Cs * -- | * | | * '--------GND----------' typical values: Cs 0.03-0.1 pF Cp 0.05-0.2 pF L 0.4-0.8 nH rgds, Al Sorry, the drawing doesn't look as I expected. At both pads Cs to ground, between pads series R-L, Cp in paralel to the pads
As a rule of thumb u can use the following model (I use this usually) * Cp * ,--------||-----------. * | | * | | * | | * | | * | | * o---o---L__|----((((------o----o * | R L | * | -- * Cs-- -- Cs * -- | * | | * '--------GND----------' typical values: Cs 0.03-0.1 pF Cp 0.05-0.2 pF L 0.4-0.8 nH rgds, Al Sorry, the drawing doesn't look as I expected. At both pads Cs to ground, between pads series R-L, Cp in paralel to the pads