For a long time I have been interested in the phenomenon of price formation in the sphere of passive radio parts. It happens so that different brands with the same parameters may differ in their price dozens times. For example, resistors Welwyn, Kiwame, Allen Bradley, etc. have resistance and power as their main parameters. But they are valued not for their parameters for some reason.

Obviously, the ideal resistor has only resistance/ But the real one has also such parameters as inductance and capacity. A resistor with certain capasity characteristics being placed in the signal chain can change the signal phase. The thing is that a high-quality resistor mustn't do this.

Similarly, an ideal capacitor has only capacity. It has no leaking current, its inductance is zero. But the real capacitor has both the resistance and the inductance parameters.

The results of the comparative measurements are shown in the tables below.

Resistors
Unit R C L Z I Q fi, grad
Welwyn (UK), 680 Ohm, 1 W 686,6 Ohm 0,02 nF (!) - 686 Ohm 53 nA - -
Welwyn (UK), 47 kOhm, 0,25 W 46,94 kOhm 0,05 pF - 46,95 kOhm 43 nA - 0,01
Welwyn (UK), 270 kOhm, 0,25 W 271 kOhm 0,16 pF - 271 kOhm 34 nA 0,0003 0,03 (!)
Welwyn (UK), 100 kOhm, 0,5 W 100,2 kOhm 0 - 100,3 kOhm 35,6 nA 0,0001 0,01
Welwyn (UK), 82 kOhm, 0,5 W 82,25 kOhm 0,1 pF - 82,26 kOhm 40 nA - 0,01
Welwyn (UK), 27 kOhm, 0,25 W 26,87 kOhm 0,4 pF - 26,88 kOhm 47 nA - -
Welwyn (UK), 1 kOhm, 0,5 W 991,88 Ohm 0,01 nF (!) - 991,7 Ohm 180 nA - 0,01
Welwyn (UK), 1 MOhm, 0,5 W 998,34 kOhm 0,22 pF - 998,4 kOhm 31 nA 0,0014 0,09 (!)
Kiwame, 22 kOhm, 5 W 21,87 kOhm 0,1 pF - 21,88 kOhm 41 nA - 0,01
C5-58 (USSR), 145 kOhm 144,97 kOhm 0,1 pF - 144,98 kOhm 11 nA 0,0001 0,01
C5-58 (USSR), 60 kOhm 60,45 kOhm 0,3 pF - 60,46 kOhm 31 nA 0,0001 0,01
Ceramic 5W (China) 1 Ohm 983 mOhm 0 0,38 mH 984,59 mOhm 373,8 nA ??? 0,12
ALPS Blue Velvet 250 kOhm 211 kOhm 1,42 pF - 211,81 kOhm 30 nA ??? 0,12
SP5-35B (USSR) 6,452 kOhm 0,016 nF - 6,452 kOhm 53 nA ??? 0,05
MLT-2 (USSR), 1,6 kOhm 1,61 kOhm 9 pF - 1,6108 kOhm ??? ??? 0 (!!!)
MLT-2 (USSR), 22 kOhm 21,981 kOhm 0,1 pF - 21,982 kOhm 50 nA ??? 0 (!!!)
PEV-10 (USSR), 130 Ohm 130,22 Ohm 0,4 nF 0,9 H 130,22 Ohm ??? ??? 0,01
5,1 Ohm (China) axial 5W 5,061 Ohm - 0,16 uH 5,062 Ohm 665 nA ??? 0,01





It is fairly strange and surprising that authoritive and respectable audio producing companies like Audio Note use in their items such resistors which are technically equal or even worth than Chinese cheap generics or low-cost unknown brands. We expect such components to appear in Dollar Tree and not in Audio Note. I got interested in the in the dependence of the phase angle of the signal passing through the resistor on the frequency of this signal. I made certain measurements and tabulated the results.


Capacitors
Unit R C L Z I Q fi, grad
CBB22 (China) 2,2 uF, 250 V 99,99 MOhm 2,227 uF 11,37 uH 71 Ohm 31 nA ??? 89,95
K42Y-2 (USSR), 0,047 uF, 500 V 661 kOhm 44,984 nF 563 mH 3537 Ohm ??? ??? 89,70
K71-7 (USSR), 4700 pF, 250 V, 2 Caps 99,99 MOhm, 99,99 MOhm 4738 pF, 4688 pF 5545 uH, 5402 uH 33,58 kOhm, 33,94 kOhm 31 nA, 30,8 nA >4000, >4600 90,00, 90,00
K73-11 (USSR), 1 uF, 250 V 35 kOhm 1,008 uF 25,11 mH 157 Ohm ??? ??? 89,75
K73-11 (USSR), 2,2 uF, 250 V 314 MOhm 2,261 uF 11,204 mH 70.396 Ohm ??? ??? 89,75
K73-17B (USSR), 470 nF, 250 V, 3 Caps 71 kOhm(!), 66 kOhm (!), 71 kOhm (!) 457 nF, 484 nF, 493 nF 55,35 mH, 52,24 mH, 51,30 mH 347 Ohm, 328 Ohm, 322 Ohm 31 nA, 33 nA, 33 nA 200, 200, 200 89,73, 89,73, 89,73
K78-2 (USSR) 0,1 uF, 1 kV 3,9 MOhm 100,38 nF 252 mH 1585 Ohm ??? ??? 89,99
TENTA 0,22 uF, 275V 999 kOhm 201,13 nF 125,95 mH 791,33 30,1 nA ??? 89,97
MBGO-2 (USSR) 4 uF, 160V 343 MOhm 4,29 uF 5,9 mH 37 Ohm ??? ??? 89,47
MBM (USSR) 1 uF, 160V 631 kOhm 44,942 nF 563 mH (!) 3541 Ohm ??? ??? 89,68