K50-81

Aluminum electrolytic capacitor

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+7 (34147) 2-99-89

AZHYAR. 673541.010 TU

Low impedance capacitors with radial wire leads. Capacitor is used for operation in direct current and ripple current circuits, secondary power sources and converter equipment. Capacitor is available in all-climate and temperate/cold climate version. Sealed; isolated.

It is recommended to use this capacitor type as substitution for capacitors K50-15, K50-27 (the second variant), K50-29, K50-32, K50-32A, K50-33A, K50-68 types.

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Main parameters

Name	Value
Rated voltage, V	16…250
Rated capacitance, µF	47…6 800
Temporary overvoltage within 10 sec., V	1.15 UR
Capacitance tolerance (25 °C, 50 Hz), %	+30…-10
Maximum operating temperature Tenv, °C	+100
Minimal operating temperature Tenv, °C	-60

All climate version

Temperate/cold climate version

A – spacing between terminals

1 – Case
2 – Isolation sleeve
3 – Lacquer coating

D, mm	A, mm
18	7.5±0.15
21	7.5±0.15
25	12.5±0.15

Capacitors overall dimensions and mass

UR, V	16	25	40	63	100	160	250
CR, µF	DxH, mm mass, g
47							18x33 16
100							18x46 26
220						25x40 33	21x60 43
330				18x28 14	18x46 26	25x48 38	25x58 48
470				18x33 16	21x60 43	25x70 52	25x80 66
680				18x46 26	25x58 48	25x95 78
1 000			18x39 21	21x48 34	25x70 52
2 200	18x28 14	18x39 21	21x48 34
3 300	18x46 26	21x48 34	21x60 43
4 700	21x48 34	21x60 38
6 800	21x60 43

Capacitor electric parameters value when delivered

UR, V	CR, µF	tg δ, %, 25 °C, 50 Hz, max	ILEAK, µA, 25 °C, after 5 min., max	Z, Ohm, 25 °C, 20kHz, max	ESR, Ohm, 25 °C, 100Hz, max	IR, А, 85 °C, 50 Hz, max
16	2 200	25	375	0.15	0.16	1.65
	3 300		460	0.064	0.092	2.02
	4 700		548	0.056	0.076	2.54
	6 800		660	0.039	0.051	3.3
25	2 200		469	0.073	0.095	1.82
	3 300		674	0.053	0.08	2.5
	4 700		686	0.038	0.054	3.39
40	1 000	20	400	0.084	0.12	1.54
	2 200		593	0.047	0.07	2.54
	3 300		727	0.036	0.062	3.44
63	330	15	288	0.145	0.23	0.77
	470		344	0.11	0.165	1.04
	680		414	0.069	0.194	1.3
	1 000		502	0.062	0.152	1.54
100	330		363	0.109	0.289	1.6
	470		434	0.089	0.245	1.94
	680		522	0.055	0.14	2.42
	1 000		632	0.036	0.103	3.12
160	220	10	750	0.164	0.48	1.1
	330		919	0.106	0.334	1.37
	470		1 097	0.09	0.248	1.86
	680		1 098	0.06	0.167	2.52
250	47		353	0.67	1.6	0.35
	100		632	0.5	1.334	0.45
	220		938	0.227	0.626	1
	330		1 149	0.143	0.378	1.5
	470		1 371	0.102	0.24	1.87

Ripple current effective value
versus temperature and frequency can be found from the formula IRO = IR x KT x KF, where

IR– allowable ripple current at 85 °C, 50 Hz (See Table “Capacitor electric parameters”)

KT - IR correction factor versus temperature

Tenv, °C	40	50	60	70	85	100
KT	1.72	1.56	1.41	1.27	1	0.5

KF - IR correction factor versus frequency

UR, V	F, Hz
50	100	200	300	1 000	5 000	10 000 и более
16…40	D = 18 mm
16…40	1	1.27	1.49	1.63	1.96	2.09	2.11
63	1	1.3	1.64	1.83	2.39	2.83	2.96
100…250	1	1.35	1.85	2.08	2.93	3.65	3.92
16…40	D = 21 mm
16…40	1	1.28	1.42	1.51	1.69	1.72	1.76
63	1	1.27	1.42	1.49	1.68	1.77	1.78
100…250	1	1.25	1.44	1.56	1.85	1.95	1.96
100…250	D = 25 mm
100…250	1	1.23	1.42	1.52	1.8	1.9	1.93

Voltage versus temperature

Capacitors reliability

Reliability Operation modes	Minimal nonfailure operating time, t_λ, hours	Capacitor failure rate, λ, 1/hour, max
Maximum-permissible mode (UR, Tenv=85 °С)	5 000	10^-6
Maximum-permissible mode (0.5UR, Tenv=100 °С)	5 000	10^-6
Light mode (0.6UR, Tenv=40 °С)	100 000	5 x 10^-7
Storageability Gamma-rated time of capacitor storageability Tcy at y=95%, years, min	25