SMA4764 데이터 시트보기 (PDF) - Secos Corporation.
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SMA4764 Datasheet PDF : 4 Pages
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Elektronische Bauelemente
SMA4735 THRU SMA4764
VOLTAGE 6 . 2V ~ 100V
1.0 Watts Surface Mount Zener Diode
FIG 1. POWER TEMPERATURE DERATING CURVE
1.25
1.0
0.75
L = LEAD LENTGH TO
HEAT SINK
0.5
0.25
0
0 20 40 60 80 100 120 140 160 180 200
TL, LEAD TEMPERATIRE
(-55oC
TO
+150oC
FIG 2.
TEMPERATURE
TEMPERATURE
RANGE; 90%OF
COFFICIENTS
THE UNITS ARE
IN
RANGES
INDICATED.)
+12
+10
+8.0
+6.0
+4.0
+2.0
VZ@IZT
0
-2.0
RANGE
-4.0
2 3 4 5 6 7 8 9 10 11 12
VZ, ZENER VOLTAGE (VOLTS)
100
70
50
30
20
10
7.0
5.0
3.0
2.0
1.0
10
RANGE
VZ@IZT
20
30
50
70
100
VZ, ZENER VOLTAGE (VOLTS)
FIG 3. TYPICAL THERMAL RESISTANCE
VERSUS LEAD LENGTH
175
150
125
100
75
50
25
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
L, LEAD LENGTH TO HEAT SINK (INCKES)
http://www.SeCoSGmbH.com/
05-Nov-2007 Rev. C
FIG 4. EFFECT OF ZENER CURRENT
NOTE: BELOW 3 VOLTS AND ABOVE 8
+6
CHANGES IN ZENER CURRENT
DO AFFECT TRMPERATURE
+4
+2
20mA
0
-0.2
-0.4
3
0.01mA
1.0mA
TVAz=@2IZ5ToC
4
5
6
7
8
VZ, ZENER VOLTAGE (VOLTS)
Any changing of specification will not be informed individual
Page 3 of 4
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