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PDF SMAJ70 Data sheet ( Hoja de datos )

Número de pieza SMAJ70
Descripción (SMAJ Series) Surface Mount Transient Voltage Suppressor
Fabricantes Taiwan Semiconductor 
Logotipo Taiwan Semiconductor Logotipo



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SMAJ SERIES
Surface Mount Transient Voltage Suppressor
Voltage Range
5.0 to 170 Volts
400 Watts Peak Power
Features
SMA/DO-214AC
For surface mounted application
Low profile package
Built-in strain relief
Glass passivated junction
Excellent clamping capability
Fast response time: Typically less than 1.0ps from 0 volt to
BV min.
Typical IR less than 1μA above 10V
High temperature soldering guaranteed:
260OC / 10 seconds at terminals
Plastic material used carries Underwriters Laboratory
Flammability Classification 94V-0
400 watts peak pulse power capability with a 10 x 1000 us
waveform by 0.01% duty cycle (300W above 78V).
Mechanical Data
Case: Molded plastic
Terminals: Solder plated
Polarity: Indicated by cathode band
Standard packaging: 12mm tape (EIA STD RS-481)
.062(1.58)
.050(1.27)
.111(2.83)
.090(2.29)
.187(4.75)
.160(4.06)
.103(2.61)
.078(1.99)
.056(1.41)
.035(0.90)
.008(.20)
.004(.10)
.210(5.33)
.195(4.95)
.012(.31)
.006(.15)
Weight: 0.064 gram
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25ambient temperature unless otherwise specified.
Type Number
Symbol
Value
Units
Peak Power Dissipation at TA=25OC, Tp=1ms(Note 1)
PPK
Minimum 400
Watts
Steady State Power Dissipation
Pd 1 Watts
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 2, 3)
IFSM
40.0
Amps
Maximum Instantaneous Forward Voltage at 25.0A
for Unidirectional Only
VF
3.5 Volts
Operating and Storage Temperature Range
TJ, TSTG
-55 to + 150
OC
Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25OC Per Fig. 2.
2. Mounted on 0.2 x 0.2" (5 x 5mm) Copper Pads to Each Terminal.
3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per
Minute Maximum.
Devices for Bipolar Applications
1. For Bidrectional Use C or CA Suffix forTypes SMAJ5.0 through Types SMAJ170.
2. Electrical Characteristics Apply in Both Directions.
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SMAJ70 pdf
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APPLICATION NOTES:
Recommended Pad Layout
The pad dimensions should be 0.010" longer than the
contact size in the lead axis. This allows a solder fillet
to form, see figure below. Contact factory for soldering
methods.
This device is designed specifically for
transiient voltage suppression from threats
generated by ESD for board levelload
switching components.
The wide leads assure a large surface contact
for good heat disipation, and a low resistance
path for surge current flow to ground.
This series is designed to optimize board
space and for use with surface mount technology
automated assembly equipment.
They can be easily mounted on printed circuit
boards and ceramic substrates to protect
sensitive components from transient voltage
damage.
Dimensions in inches and (millimeters)
- 534 -
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