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Dated : 22/01/2005
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
®
ZMC52 Series
Zener Voltage Range
1)
Maximum Zener Impedance
1)
Reverse Leakage Current
Temp.
Coefficient of
Zener
Voltage
Vznom
3)
lZT
rZJT
rZJK
at
IZK
IR
2)
at
VR
TKVZ
Type
V
mA
Ω
Ω
mA
μA
V
%/K
ZMC 5276
150
0.85
<1500
--
--
<0.1
113
<+0.110
ZMC 5277
160
0.80
<1700
--
--
<0.1
120
<+0.115
ZMC 5278
170
0.74
<1900
--
--
<0.1
127
<+0.115
ZMC 5279
180
0.68
<2200
--
--
<0.1
135
<+0.120
ZMC 5280
190
0.66
<2400
--
--
<0.1
142
<+0.120
ZMC 5281
200
0.65
<2500
--
--
<0.1
150
<+0.120
1) The Zener Impedance is derived from the 60 Hz AC voltage which results when an AC current having an
RMS value equal to 10% of the Zener Current (IZT or IZK) is superimposed on IZT or IZK .Zener Impedance
is measured at two points to insure a sharp knee on the breakdown curve and to
eliminate unstable
units.
2)
Measured under thermal equilibrium and DC test conditions.
3)
Tested with pulses tp = 20 ms.
max
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