SMCJ24CA Taiwan Semiconductor, SMCJ24CA Datasheet - Page 5

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SMCJ24CA

Manufacturer Part Number
SMCJ24CA
Description
TVS Diodes - Transient Voltage Suppressors 24V 1.5KW 5% Bidir
Manufacturer
Taiwan Semiconductor
Datasheet

Specifications of SMCJ24CA

Polarity
Bidirectional
Channels
1 Channel
Clamping Voltage
38.9 V
Operating Voltage
24 V
Package / Case
DO-214AB
Breakdown Voltage
26.7 V
Peak Surge Current
200 A
Peak Pulse Power Dissipation
1500 W (Min)
Maximum Operating Temperature
+ 150 C
Minimum Operating Temperature
- 55 C
Dimensions
6.22(Max) mm W x 7.11(Max) mm L
Lead Free Status / Rohs Status
 Details
Other names
R6

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protection. The following is a typical linear power supply with transient voltage suppressor units placed at
different points. All provide protection of the load.
replacement of the line fuse(F) since it provides a dominant portion of the series impedance when a surge is
encountered.
impedance and the magnitude of surge rushed into the circuit. Otherwise the TVS diode is easy to be
destroyed by voltage surge.
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, 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.
require varying trade-offs in power supply protection versus maintenance(changing the time fuse).
This reduces the parts count and incorporates the protection within the bridge rectifier.
TVS APPLICATION NOTES:
Transient Voltage Suppressors may be used at various points in a circuit to provide various degrees of
However, we do not recommend to use the TVS diode here, unless we can know the electric circuit
Transient Voltage Suppressor 2 provides execllent protection of circuitry excluding the transformer(T).
Transient Voltage Suppressor 3 provides the load with complete protection. It uses a unidirectional
Any combination of these three, or any one of these applications, will prevent damage to the load. This would
An additional method is to utilize the Transient Voltage Suppressor units as a controlled avalanche bridge.
Transient Voltage Suppressors 1 provides maximum protection. However, the system will probably require
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.
RECOMMENDED PAD SIZES
FIGURE 1
- 550 -
FIGURE 2
Dimensions in inches and (millimeters)
Version: D08

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