Surface Mount Transient Voltage Suppressors (TVS)
Revision November 22, 2018
1 / 5
@ SOCAY Electronics Corp., Ltd. 2018
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
SMBJ3.3A 600W DO-214AA (SMB)
SOCAY Electronics Corp., Ltd. www.socay.com
Uni-directional
The SMBJ3.3A is designed specifically to protect sensitive electronic
equipment from voltage transients induced by lightning and other transient
voltage events.
For surface mounted applications in order to optimize board space.
Low leakage.
��� Uni and Bidirectional unit.
Glass passivated junction.
Low inductance.
Excellent clamping capability.
600W Peak power capability at 10 × 1000µs waveform Repetition rate
(duty cycle):0.01%.
Fast response time: typically less than 1.0ps from 0 Volts to V
BR
min.
Typical I
R
less than 5μA above 12V.
High Temperature soldering: 260℃/40 seconds at terminals.
Typical maximum temperature coefficient ΔV
BR
= 0.1% × V
BR
@25℃
× ΔT.
Plastic package has Underwriters Laboratory Flammability 94V-0.
Matte tin lead–free Plated.
Halogen free and RoHS compliant.
Typical failure mode is short from over-specified voltage or current.
Whisker test is conducted based on JEDEC JESD201A per its table
4a and 4c.
IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact).
ESD protection of data lines in accordance with IEC 61000-4-2
(IEC801-2).
EFT protection of data lines in accordance with IEC 61000-4-4
(IEC801-4).
AGENCY
AGENCY FILE NUMBER
E341027
TVS devices are ideal for the protection of I/O interfaces,
V
CC
bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
Parameter
Symbol
Value
Unit
Peak Pulse Power Dissipation with a 10/1000µs waveform (Fig.1)(Note
1), (Note 2)
P
PPM
600
Watts
Peak Pulse Current with a 10/1000µs waveform.(Note1,Fig.3)
I
PP
See Next Table
Amps
Power Dissipation on Infinite Heat Sink at T
L
=75℃
P
M(AV)
5.0
Watt
Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3)
I
FSM
100
Amps
Maximum Instantaneous Forward Voltage at 25A for Unidirectional Only
(Note 4)
V
F
3.5/5.0
Voltage
Operating junction and Storage Temperature Range.
T
J
, T
STG
-55 to +150
℃
Notes:
1. Non-repetitive current pulse, per Fig. 3 and derated above T
A
= 25℃ per Fig. 2.
2. Mounted on 5.0mm x 5.0mm (0.03mm thick) Copper Pads to each terminal.
3. 8.3ms single half sine-wave, or equivalent square wave, Duty cycle = 4 pulses per minutes maximum.
4. V
F
< 3.5V for V
BR
< 200V and V
F
< 6.5V for V
BR
> 201V.
Functional Diagram
Agency Approvals
Applications
Maximum Ratings (T
A
=25℃ unless otherwise noted)
Description
Features
Uni-direction
Cathode
Anode
Surface Mount Transient Voltage Suppressors (TVS)
Revision November 22, 2018
2 / 5
@ SOCAY Electronics Corp., Ltd. 2018
Specifications are subject to change without notice.
Please refer to www.socay.com for current information.
SMBJ3.3A 600W DO-214AA (SMB)
SOCAY Electronics Corp., Ltd. www.socay.com
Part Number
Marking
Reverse
Stand-Off
Voltage
V
RWM
(V)
Breakdown
Voltage
V
BR
@ I
T
Test
Current
I
T
(mA)
Maximum
Clamping
Voltage
V
C
@ I
PP
Max (V)
Maximum
Peak
Pulse
Current
I
PP
①
Max (A)
Maximum
Reverse
Leakage
I
R
@ V
RWM
(μA)
C
O
②
Typ (pF)
Min (V)
SMBJ3.3A
K1
3.3
4.1
1
7.3
82.5
100
4100
Notes:
① Surge waveform: 10/1000μs.
② C
O
is measured at: Vbias=0V,V
RMS
=1V,f=1MHz.
V
RWM
: Stand-off voltage -- Maximum voltage that can be applied.
V
BR
: Breakdown voltage.
V
C
: Clamping voltage -- Peak voltage measured across the suppressor at a specified I
PP
.
I
R
: Reverse leakage current.
Electrical Characteristics (T
A
=25℃ unless otherwise noted)
Figure 1 - Peak Pulse Power Rating Curve
Figure 3 - Pulse Waveform
Ratings and Characteristic Curves (T
A
=25℃ unless otherwise noted)
Figure 4 - Typical Junction Capacitance
0 25 50 75 100 125 150 175
100
80
60
40
20
0
T
A
-Ambient temperature(℃)
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage %
Figure 2 - Pulse Derating Curve
150
100
50
0
I
PPM
- Peak Pulse Current, % I
RSM
t
r
=10µsec
Peak Value
IPPM
Half Value
I
PPM
(I
PPM
/2)
t
c
10/1000µsec. Waveform
as defined by R.E.A
0 1.0 2.0 3.0 4.0
T
J
=25℃
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I
PPM
t - Time (ms)
t
d
- Pulse Width (μs)
P
PPM
- Peak Pulse Power
(kW)
10
0.1
1
0.1 1 10 100 1000 10000
10
1.0 10.0 100.0 1000.0
10000
1000
100
1
V
BR
-Reverse Breakdown Voltage (V)
Cj (pF)
10
Tj=25
℃
f=1.0MHz
Vsig=50mVp-p
Bi-directional
@zero bins
Uni-directional
@zero bins
Uni-directional @V
RWM
Bi-directional @V
RWM