SMBJ22A datasheet, PDF - EEWORLD Datasheet

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SMBJ22A: Description600 W, UNIDIRECTIONAL, SILICON, TVS DIODE; CategoryDiscrete semiconductor diode; File Size309KB，4 Pages; ManufacturerLGE; Websitehttp://www.luguang.cn/web_en/index.html

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SMBJ22A Overview

600 W, UNIDIRECTIONAL, SILICON, TVS DIODE

SMBJ22A Parametric

Parameter Name	Attribute value
Parts packaging code	SMB
Manufacturer packaging code	SMB

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SMBJ SERIES

600 Watts Surface Mount

Transient Voltage Suppressor

SMB/DO-214AA

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 I

less than 1μA above 10V

High temperature soldering guaranteed:

260

C / 10 seconds at terminals

Plastic material used carries Underwriters

Laboratory Flammability Classification 94V-0

600 watts peak pulse power capability with a 10

x 1000 us waveform by 0.01% duty cycle

Dimensions in inches and (millimeters)

Mechanical Data

Case: Molded plastic

Terminals: Pure tin plated lead free,

Polarity: Indicated by cathode band except

bipolar

Weight: 0.093gram

Maximum Ratings and Electrical Characteristics

Rating at 25

C ambient temperature unless otherwise specified.

Type Number

eak

ower

issipation at

=25 C, Tp=1ms (

ote 1)

Steady State Power Dissipation

Peak Forward Surge Current, 8.3 ms Single Half

Sine-wave Superimposed on Rated Load

(JEDEC method) (Note 2, 3) - Unidirectional Only

Maximum Instantaneous Forward Voltage at 50.0A for

Unidirectional Only (Note 4)

Typical Thermal Resistance (Note 5)

Symbol

FSM

θJC

θJA

, T

STG

Value

Minimum 600

100

3.5 / 5.0

-65 to + 150

Units

Watts

Amps

Volts

C/W

Operating and Storage Temperature Range

1. Non-repetitive Current Pulse Per Fig. 3 and Derated above T

=25 C Per Fig. 2.

Notes:

2. Mounted on 5.0mm

(.013 mm Thick) Copper Pads to Each Terminal.

3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 pulses Per Minute Maximum.

4. V

=3.5V on SMBJ5.0 thru SMBJ90 Devices and V

=5.0V on SMBJ100 thru SMBJ170 Devices.

5. Measured on P.C.B. with 0.27 x 0.27” (7.0 x 7.0mm) Copper Pad Areas

Devices for Bipolar Applications

1. For Bidrectional Use C or CA Suffix for Types SMBJ5.0 through Types SMBJ170.

2. Electrical Characteristics Apply in Both Directions.

http://www.luguang.cn

mail:lge@luguang.cn

SMBJ SERIES

TVS APPLICATION NOTES:

600 Watts Surface Mount

Transient Voltage Suppressor

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.

http://www.luguang.cn

mail:lge@luguang.cn

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