CZRA4740 Datasheet, PDF (3/4 Pages) Comchip Technology – SURFACE MOUNT ZENER DIODE

SURFACE MOUNT ZENER DIODE
RATING AND CHARACTERISTICS CURVES
CZRA4740 THRU CZRA4764
COMCHIP
SMD DIODE SPECIALIST
1.25
1.0
L = LEAD LENTGH TO
0.75
HEAT SINK
0.50
0.25
0
0 20 40 60 80 100 120 140 160 180 200
TL, LEAD TEMPERATURE
Fig. 1-POWER TEMPERATURE DERATING CURVE
+12
+10
+8.0
+6.0
+4.0
+2.0
V_Z @ I_ZT
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
V_Z @ I_ZT
20
30
50
70 100
VZ, ZENER VOLTAGE (VOLTS)
Fig. 2-TEMPERATURE COEFFICIENTS
(-55°C TO +150°C TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.)
175
150
125
100
75
50
25
0
0 .1 .2 .3 .4 .5 .6 .7 .8 .9 1.0
L, LEAD LENGTH TO HEAT SINK (INCKES)
Fig.3-TYPICAL THERMAL RESISTANCE VERSUS LEAD
LENGTH
NOTE:BELOW 3 VOLTS AND ABOVE 8
+6.0
CHANGES IN ZENER CURRENT DO
AFFECT TEMPERATURE
+4.0
20mA
+2.0
0
0.01mA
-2.0
1.0mA
V_Z @ I_ZT
TA = 25°C
-4.0
3
4
5
6
7
8
VZ, ZENER VOLTAGE (VOLTS)
Fig. 4-EFFECT OF ZENER CURRENT
MDS0208021B Comchip Technology Corporation • Tel: [phone] • Fax: [phone] • www.comchiptech.com
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