Zener Diodes
A Zener diode is characterized by its ability to protect an object from transient overvoltage pulses as well as overvoltage pulses close to DC, which are difficult to protect against with ESD protection diodes.
In equipment power lines, switching surges with long pulse widths up to milliseconds may be generated when the circuit switches. Zener diodes protect semiconductor devices from switching surges and overvoltage with a frequency close to DC. It can also protect semiconductor devices from ESD[2] with a width of several hundred nanoseconds and inductive lightning surges[1] with a pulse width in the order of microseconds as well. This contributes toward improved equipment reliability.
Zener diodes are available in a wide range of Zener voltage specifications extending from 5.6 V to 82 V. Their extensive application fields include both consumer and industrial electronics.
[1] @IEC61000-4-5, tp=8/20 μs
[2] @IEC61000-4-2
Lineup
- SOD-523 (ESC)
-
Package Size
W : 1.6 mm 0.063 inch L : 0.8 mm 0.031 inch H : 0.6 mm 0.024 inch
- SOD-323 (USC)
-
Package Size
W : 2.5 mm 0.098 inch L : 1.25 mm 0.049 inch H : 0.9 mm 0.035 inch
- SOT-323 (USM)
-
Package Size
W : 2.0 mm 0.079 inch L : 2.1 mm 0.083 inch H : 0.9 mm 0.035 inch
- SOT-346 (S-Mini)
-
Package Size
W : 2.9 mm 0.11 inch L : 2.5 mm 0.098 inch H : 1.1 mm 0.043 inch
All package dimensions are guaranteed in millimeters as mentioned on datasheet. Package dimension in inches is round to 2 significant digits converted with 1mm=0.0393701inch.
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About information presented in this cross reference
The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
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