Data Sheet
5.0 WATTS ZENER DIODE
1N5342B~1N5388B
RATINGD AND CHARACTEISTIC CURVES 1N5342B THRU 1N5388B
TEMPERATURE COEFFICIENTS
Figure 1. Temperature Coefficient-Range
for Units 3 to 10 Volts
θ
V
Z
, TEMPERATURE COEFFICIENT
(mV/℃)
＠
I
ZT
℃
P
D
, MAXIMUM POWER DISSIPATION
(WATTS)
10
8
6
4
2
RANGE
Figure 2. Power Temperature Derating
Curve
8
L=1/8”
L=LEAD LENGTH
TO HEAT SINK
(SEE FIGURE 5)
6
L=3/8”
4
L=1”
0
-2
3
4
5
6
7
8
9
10
2
0
0
30
60
90
120
150
V
Z
, ZENER VOLTAGE
＠
I
ZT
(VOLTS)
T
L
, LEAD TEMPERATUE (℃)
℃
Figure 3. Typical Thermal Response
L, Lead Length=3/8 Inch
θ
JL
(t, D), TRANSIENT THERMAL
RESISTANCE
JUNCTION-TO-LEAD (℃/W)
℃
20
10
5
2
1
D=0.01
D=0.5
D=0.2
D=0.1
D=0.05
P
PK
t
1
t
2
0.5
0.2
D=0
NOTE:BELOW 0.1 SECOND, THERMAL
RESPONSE CURVE IS APPLICABLE
TO ANY LEAD LENGTH (L).
DUTY CYCLT, D=t
1
/t
2
SINGLE PULSE
△T
JL
=θ
JL
(t)P
PK
REPETITIVE PULSES
△T
JL
=θ
JL
(t,D)P
PK
0.001
0.005
0.01
0.05 0.1
0.5 1
5
10
20
50 100
t, TIME (SECONDS)
θ
JL
JUNCTION-TO-LEAD THERMAL
RESISTANCE (℃/W)
℃
Figure 4. Temperature Coefficient-Range
for Units 10 to 220 Volts
θ
V
Z
, TEMPERATURE COEFFICIENT
(mV/℃)
＠
I
ZT
℃
300
200
100
RANGE
Figure 5. Typical Thermal Resistance
40
30
50
30
20
10
20
L
L
10
PRIMARY PATHOF
CONDUCTIONIS THROUGH
THE CATHIDE LEAD
5
0
20 40
60 80 100 120 140 160 180 200 220
0
0
0.2
0.4
0.6
0.8
1
V
Z
, ZENER VOLTAGE
＠
I
ZT
(VOLTS)
L,N LEAD LENGTH TO HEAT SINK (INCH
11-12
FCI [ FIRST COMPONENTS INTERNATIONAL ]
