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SMCJ60 Datasheet PDF - Taiwan Semiconductor Company

Part Number SMCJ60
Description (SMCJxx) Surface Mount Transient Voltage Suppressor
Manufacturers Taiwan Semiconductor Company 
Logo Taiwan Semiconductor Company Logo 



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SMCJ60 datasheet, circuit
SMCJ SERIES
Surface Mount Transient Voltage Suppressor
Voltage Range
5.0 to 170 Volts
1500 Watts Peak Power
Features
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
1500 watts peak pulse power capability with a 10 X 1000 us
waveform by 0.01% duty cycle
SMC/DO-214AB
.129(3.27)
.118(3.0)
.245(6.22)
.220(5.59)
.103(2.62)
.079(2.00)
.280(7.11)
.260(6.60)
.012(.31)
.006(.15)
Mechanical Data
Case: Molded plastic
Terminals: Solder plated
Polarity: Indicated by cathode band
Standard packaging: 16mm tape (EIA STD RS-481)
Weight: 0.21gram
.060(1.52)
.030(0.76)
.008(.20)
.004(.10)
.320(8.13)
.305(7.75)
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25ambient temperature unless otherwise specified.
Type Number
Peak Power Dissipation at TA=25OC, Tp=1ms
(Note 1)
Symbol
PPK
Value
Minimum 1500
Units
Watts
Steady State Power Dissipation
Pd 5 Watts
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 2, 3) - Unidirectional Only
IFSM
200 Amps
Maximum Instantaneous Forward Voltage at
100.0A for Unidirectional Only (Note 4)
VF
3.5 / 5.0
Operating and Storage Temperature Range
TJ, TSTG
-55 to + 150
Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25OC Per Fig. 2.
2. Mounted on 0.6 x 0.6" (16 x 16mm) Copper Pads to Each Terminal.
Volts
OC
3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per Minute
Maximum.
4. VF=3.5V on SMCJ5.0 thru SMCJ90 Devices and VF=5.0V on SMCJ100 thru SMCJ170
Devices.
Devices for Bipolar Applications
1. For Bidrectional Use C or CA Suffix for Types SMCJ5.0 through Types SMCJ170.
2. Electrical Characteristics Apply in Both Directions.
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SMCJ60 equivalent
TVS APPLICATION NOTES:
Transient Voltage Suppressors may be used at various points in a circuit to provide various degrees of
protection. The following is a typical linear power supply with transient voltage suppressor units placed at
different points. All provide protection of the load.
FIGURE 1
Transient Voltage Suppressors 1 provides maximum protection. However, the system will probably require
replacement of the line fuse(F) since it provides a dominant portion of the series impedance when a surge is
encountered.
However, we do not recommend to use the TVS diode here, unless we can know the electric circuit
impedance and the magnitude of surge rushed into the circuit. Otherwise the TVS diode is easy to be
destroyed by voltage surge.
Transient Voltage Suppressor 2 provides execllent protection of circuitry excluding the transformer(T).
However, since the transformer is a large part of the series impedance, the chance of the line fuse opening
during the surge condition is reduced.
Transient Voltage Suppressor 3 provides the load with complete protection. It uses a unidirectional
Transient Voltage Suppressor, which is a cost advantage. The series impedance now includes the line fuse,
transformer, and bridge rectifier(B) so failure of the line fuse is further reduced. If only Transient Voltage
Suppressor 3 is in use, then the bridge rectifier is unprotected and would require a higher voltage and current
rating to prevent failure by transients.
Any combination of these three, or any one of these applications, will prevent damage to the load. This would
require varying trade-offs in power supply protection versus maintenance(changing the time fuse).
An additional method is to utilize the Transient Voltage Suppressor units as a controlled avalanche bridge.
This reduces the parts count and incorporates the protection within the bridge rectifier.
FIGURE 2
RECOMMENDED PAD SIZES
The pad dimensions should be 0.010"(0.25mm) longer than the contact size, in the lead axis.
This allows a solder fillet to form, see figure below. Contact factory for soldering methods.
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