Dated : 10/05/2005
®
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
ZM 4728...ZM 4764
SILICON PLANAR POWER ZENER DIODES
for use in stabilizing and clipping circuits with high power
rating. Standard Zener voltage tolerance is ±10%. Add suffix
“A” for ±5% tolerance and suffix “B” for ±2% tolerance. Other
tolerances available are upon request.
These diodes are also available in DO-41 case with the
type designation 1N4728...1N4764
.
Absolute Maximum Ratings (T
a
= 25
o
C)
Symbol Value Unit
Zener Current see Table “Characteristics”
Power Dissipation P
tot
1
1)
W
Junction Temperature T
j
175
O
C
Storage Temperature Range T
S
-65 to +175
O
C
1)
Valid provided that electrodes are kept at ambient temperature.
Characteristics at T
amb
= 25
o
C
Symbol Min. Typ. Max. Unit
Thermal Resistance
Junction to Ambient Air
R
thA
-
-
170
1)
K/W
Forward Voltage
at I
F
= 200mA
V
F
-
-
1.2
V
1)
Valid provided that electrodes are kept at ambient temperature.
LL-41
