S EM ICOND UCTOR
Electrical Characteristics
Device Type
ZM4747A
ZM4748A
ZM4749A
ZM4750A
ZM4751A
ZM4752A
ZM4753A
ZM4754A
ZM4755A
ZM4756A
ZM4757A
ZM4758A
VZ @ IZT
(Volts)
Nominal
20
22
24
27
30
33
36
39
43
47
51
56
T
A
= 25°C unless otherwise noted
ZZT @ IZT
IZT
IZK
()
(mA)
(mA)
Max
12.5
22
0.25
11.5
23
0.25
10.5
25
0.25
9.5
35
0.25
8.5
40
0.25
7.5
45
0.25
7
50
0.25
6.5
60
0.25
6
70
0.25
5.5
80
0.25
5
95
0.25
4.5
110
0.25
ZZK @ IZK
()
Max
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
IR @ VR
(A)
Max
5
5
5
5
5
5
5
5
5
5
5
5
VR
(Volts)
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
V
F
Forward Voltage = 1.2 V Maximum @
I
F
= 200 mA for all types
Notes:
1. The device numbers listed have a standard tolerance on the nominal zener voltage of
5%.
2. For detailed information on price, availability and delivery of nominal zener voltages between the voltages shown and tighter
voltage tolerances, contact your nearest Tak Cheong’s representative.
3. The zener impedance is derived from the 60-cycle ac voltage, which results when an ac current having an rms value equal to
10% of the dc zener current (I
ZT
or
I
ZK
) is superimposed to
I
ZT
or
I
ZK.
Number: DB-226
Nov, 2010 / A
Page 2
TAK_CHEONG [ Tak Cheong Electronics (Holdings) Co.,Ltd ]
