SMBJ3.3A
Working Voltage: 3.3 V
Peak Pulse Power: 600 W
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Note:
(1)Non-repetitive current pulse per Fig.5 and derated above T
A
= 25 °C per Fig.1
(2)Measured on 8.3 ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum
Surface Mount
Transient Voltage Suppressors
Features
SMB/ DO-214AA
Glass passivated chip
600 W peak pulse power capability with a
10/1000 μs waveform, repetitive rate (duty
cycle):0.01 %
Low leakage
Uni unit
Excellent clamping capability
Very fast response time
RoHS compliant
Polarity: Color band denotes cathode end
Mechanical Data
Case: Molded plastic
Epoxy: UL 94V-0 rate flame retardant
Lead: Solderable per MIL-STD-750, method
2026
except Bipolar
Mounting position: Any
Maximum Ratings(T
A
=25℃ unless otherwise noted)
Parameter
Symbol
Value
Unit
Peak power dissipation with a 10/1000μs waveform
(1)
P
PP
600 W
Maximum clamping voltage @ I
PP
= 76.9A
V
C
8 V
Power dissipation on infinite heatsink at T
L
= 75 °C P
D
5.0 W
Peak forward surge current, 8.3 ms single half sine-
wave unidirectional only
(2)
I
FSM
100 A
Maximum instantaneous forward voltage at 50 A for
unidirectional only
(3)
V
F
3.5
V
Operating junction and storage temperature range
T
J
, T
STG
- 55 to +150 °C
0.148 [3.75]
0.130 [3.30]
0.191 [4.85]
0.171 [4.35]
0.087 [2.20]
0.078 [1.96]
0.096 [2.44]
0.084 [2.13]
0.012 [0.30]
0.006 [0.15]
0.059 [1.51]
0.030 [0.75]
0.008 [0.20]
0 [0.00]
0.217 [5.50]
0.201 [5.10]
Break down voltage @ I
T
= 10 mA
V
B
5.2~6.0
V
Maximum reverse leakage @ V
R
= 3.3 V
I
R
800
uA
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Ver.: A1 2018-05-10 DR
SMBJ3.3A
AMBIENT TEMPERATURE , (℃)
AVERAGE FORWARD CURRENT, (A)
0 100 1 100
25 100 100 22
150 0
0 5 0.1 30
73 5 10000 0.22
## 0
5 450
0 0
4000 70
0.2 100
5 450
0.5 76
2800 40
1 50
5 450
1.5 33
2500 7
2 23
5 450
3 13
2000 10
4 10
Fig. 5 - Pulse Waveform Fig. 6 - Typical Junction Capacitance
Ratings and Characteristics Curves (T
A
=25℃ unless otherwise noted)
Fig. 1 - Pulse Derating Curve
Fig. 2 - Maximum Non-Repetitive
Surge Current
Fig. 3 - Steady State Power Derating Curve Fig. 4 - Peak Pulse Power Rating Curve
1
10
100
1000
10000
1 10 100 1000
Junction Capacitance,C
J
(pF)
Reverse Breakdown Voltage,V
BR
(V)
Bi-directional @V
RWM
Uni-directional @V
RWM
T
J
=25 °C
f=1.0MHz
0.0
1.0
2.0
3.0
4.0
5.0
0 25 50 75 100 125 150 175 200
Steady State Power Dissipation, (W)
Lead Temperature , T
L
(℃)
0
20
40
60
80
100
1 10 100
Peak Forward Surge Current, (A)
Number of Cycles at 60 Hz
T
J
= T
J
max.
8.3 ms Single Half Sine-Wave
0
25
50
75
100
0 25 50 75 100 125 150 175 200
Peak Pulse Derating in Percentage of Peak
Power or Current, (%)
Ambient Temperature ,T
A
(℃)
0
50
100
0 1 2 3 4
Peak Pulse Current , (% )
Time , (ms)
T
J
= 25 °C
Pulse Width (td) is defined as the
point where the peak current
decays to 50 % of Ipp
10/1000 μsec. Waveform
as defined by R.E.A.
Peak Value
(Ipp)
Half Value = Ipp
2
td
Tr=10μs
Bi-directional
@zero bias
Uni-directional
@zero bias
0.1
1
10
100
0.1 1 10 100 1000 10000
Pulse Width ,t
d
(μs)
Peak Power (kW)
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Ver.: A1 2018-05-10 DR