Characteristics SMCJ
4/10 Doc ID 5617 Rev 8
Figure 5. Clamping voltage versus peak pulse current (exponential waveform, maximum values)
Figure 3. Peak pulse power dissipation
versus initial junction temperature
Figure 4. Peak pulse power versus
exponential pulse duration
(T
j
initial = 25 °C)
0
500
1000
1500
2000
0 25 50 75 100 125 150 175
P
pp
(W
)
T
j
(°C)
0.1
1.0
10.0
100.0
1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01
P
PP
(kW)
T
j
initial = 25 °C
t
P
(ms)
I
PP
(A)
0.1
1.0
10.0
100.0
1000.0
1 10 100 1000
10/1000 µs
T
j
initial=25 °C
8/20 µs
10 ms
SMCJ5.0A
SMCJ12A
SMCJ24A
SMCJ40A
SMCJ85A
SMCJ188A
V
CL
(V)
SMCJ Characteristics
Doc ID 5617 Rev 8 5/10
Figure 6. Junction capacitance versus
reverse applied voltage for
unidirectional types (typical values)
Figure 7. Junction capacitance versus
reverse applied voltage for
bidirectional types (typical values)
0.01
0.10
1.00
10.00
1 10 100 1000
C(nF)
F=1 MHz
V
OSC
=30 mV
RMS
T
j
=25 °C
SMCJ5.0A
SMCJ12A
SMCJ24A
SMCJ40A
SMCJ85A
SMCJ188A
V
R
(V)
0.01
0.10
1.00
10.00
1 10 100 1000
C(nF)
F=1 MHz
V
OSC
=30 mV
RMS
T
j
=25 °C
SMCJ5.0CA
SMCJ12CA
SMCJ24CA
SMCJ40CA
SMCJ85CA
SMCJ188CA
V
R
(V)
Figure 8. Peak forward voltage drop
versus peak forward current
(typical values)
Figure 9. Relative variation of thermal
impedance, junction to ambient,
versus pulse duration
Figure 10. Thermal resistance junction to
ambient versus copper surface
under each lead
Figure 11. Leakage current versus junction
temperature (typical values)
I
FM
(A)
1.0E-01
1.0E+00
1.0E+01
1.0E+02
0.0 0.5 1.0 1.5 2.0 2.5 3.0
T
j
=25 °C
T
j
=125 °C
V
FM
(V)
0.01
0.10
1.00
1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03
Z
th(j-a)
/R
th(j-a)
t
P
(s)
Recommended pad layout
PCB FR4, copper thickness = 35 µm
0
10
20
30
40
50
60
70
80
90
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
R
th(j-a)
(°C/W)
S
CU
(cm²)
PCB FR4, copper thickness = 35 µm
I
R
(nA)
1.0E+00
1.0E+01
1.0E+02
1.0E+03
1.0E+04
25 50 75 100 125 150
V
R
=V
RM
V
RM
10 V
V
R
=V
RM
V
RM
<10V
T
j
(°C)
Ordering information scheme SMCJ
6/10 Doc ID 5617 Rev 8
2 Ordering information scheme
Figure 12. Ordering information scheme
SM C J 85 CA - TR
Surface mount
Peak pulse power
C = 1500 W Transil in SMC
Stand off voltage
85 = 85 V
Type
A = Unidirectinal
CA = Bidirectional
Delivery mode
TR = Tape and reel

SMCJ22A-TR

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
TVS Diodes / ESD Suppressors 1500W 22V Unidirect
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union