TH97/2478
TH09/2479
IATF 0060636
SGS TH07/1033
RATING AND CHARACTERISTIC CURVES ( 1N5338B - 1N5388B )
Fig 3. Typical Thermal Response L, Lead Length = 3/8 Inch
θ
JL
(t,D),Transient Thermal Resistance
Junction-To-Lead (°C/W)
20
10
5
2
1
0.5
D=0
0.2
0.001
D=0.5
D=0.2
D=0.1
DUTY CYCLE, D = t
1
/t
2
SINGLE PULSE
Δ
T
JL
=θ
JL
(t)P
PK
NOTE:BELOW 0.1 SECOND, THERMAL
RESPONSE CURVE IS APPLICABLE
TO ANY LEAD LENGTH (L)
REPETITIVE PULSE
Δ
T
JL
=θ
JL
(t,D)P
PK
P
PK
t
1
t
2
D=0.05
D=0.01
0.005 0.01
0.05
0.1
0.5
1
5
10
50
100
t,TIME (SECONDS)
Fig.4 Maximum Non-Repetitive Surg Current
versus Nominal Zener Voltage
Ir, PEAK SURGE CURRENT (AMPS)
20
10
4
2
1
0.4
0.2
0.1
3
4
*SQURE WAVE
PW=1 ms*
PW=8.3 ms*
Fig. 5 Peak Surg Current versus
Pulse Width
Ir, PEAK SURGE CURRENT (AMPS)
30
20
10
5
2
1
0.5
0.2
0.1
1
10
100
1000
Vz = 200 V
40
Vz = 3.3 V
PW=100 ms*
PW=1000 ms*
6 8 10
20
30 40
80
100
200
NORMINAL Vz (V)
PW, PULSE WIDTH (ms)
Page 3 of 3
Rev. 10 : March 9, 2010
EIC [ EIC DISCRETE SEMICONDUCTORS ]
