Zener Diodes

Zener diodes are a type of semiconductor device that has different characteristics from a normal diode. Zener diodes allow current to flow from its anode to its cathode in either a forward or reverse direction, but only when exposed to enough voltage.

How does a Zener diode work?

Zener diodes are designed to change the direction of the current flow once the voltage reaches a specific, defined voltage level. This also means that Zener diodes can operate continuously in a breakdown mode. The voltage level that changes the direction of flow is called Zener Voltage or Breakdown Voltage. It could be defined for specific diodes anywhere from 1.8 to 200 V.

Types of Zener diodes

Zener diodes are offered in an array of different configurations such as different levels of power dissipation, mount types, and different configurations.

There are also different types of Zener diodes such as:

  • Avalanche
  • Bi-Directional
  • ESD Protection
  • General Purpose
  • Ultra-small

Typical applications of Zener diodes?

Zener diodes are used in all kinds of electronic equipment and are used to protect circuits from overvoltage and electrostatic discharge or for switching applications. They are one of the basic building blocks of electronic circuits. Zener diodes work reliably in the breakdown region, unlike normal diodes which would overheat. They are the most common and handiest solutions to a number of needs in a circuit design.


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Description Price Diode Configuration Nominal Zener Voltage Mounting Type Number of Elements per Chip Maximum Power Dissipation Package Type Zener Type Zener Voltage Tolerance Pin Count Test Current Maximum Zener Impedance Maximum Reverse Leakage Current Dimensions Automotive Standard
RS Stock No. 190-7702
Mfr. Part No.SMA6J48A-TR
MYR1.754
Each (In a Pack of 25)
units
Single 48V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9 x 2.25 x 4.6mm -
RS Stock No. 190-7574
Mfr. Part No.DSL03-024SC6
MYR2.112
Each (In a Pack of 25)
units
Single 24V Surface Mount 1 - SOT23-6L - - 2 - - 200nA 1.75 x 1.3 x 3.05mm -
RS Stock No. 190-7681
Mfr. Part No.SM6T56CA
MYR1.929
Each (In a Pack of 25)
units
Single 47.6V Surface Mount 1 600 W DO-214AA (SMB) Bi-Directional - 2 - - 200nA 3.95 x 2.25 x 4.6mm -
RS Stock No. 190-6777
Mfr. Part No.SM15T33AY
MYR1.612
Each (On a Reel of 2500)
units
Single 10.2V Surface Mount 1 1.5 kW DO-214AB (SMC) - - 2 - - 200nA 7.15 x 2.25 x 6.25mm AEC-Q101
RS Stock No. 190-6746
Mfr. Part No.BZW06-28
MYR0.825
Each (On a Tape of 1000)
units
Single 28V Through Hole 1 1.7 W DO-15 - - 2 - - 200nA 3.53 (Dia.) x 6.75mm -
RS Stock No. 190-7635
Mfr. Part No.ESDCAN05-2BWY
MYR1.326
Each (In a Pack of 50)
units
Single 36V Surface Mount 2 - SOT-323 Bi-Directional - 3 - - 100nA 2.2 x 1.1 x 1.35mm AEC-Q101
RS Stock No. 190-6750
Mfr. Part No.ESDA7P120-1U1M
MYR0.482
Each (On a Reel of 8000)
units
Single 5.5V Surface Mount 1 - QFN Uni-Directional - 2 - - 1.5µA 1.6 x 0.55 x 1mm -
RS Stock No. 190-7672
Mfr. Part No.SM15T12CA
MYR2.795
Each (In a Pack of 25)
units
Single 10.2V Surface Mount 1 1.5 kW DO-214AB (SMC) Bi-Directional - 2 - - 1µA 7.15 x 2.25 x 6.25mm -
RS Stock No. 190-6775
Mfr. Part No.PCLT-2AT4-TR
MYR5.064
Each (On a Reel of 2500)
units
Single 24V Surface Mount 2 - TSSOP Bi-Directional - 14 - - - 5.1 x 1.05 x 4.5mm -
RS Stock No. 190-6788
Mfr. Part No.SMM4F28A-TR
MYR0.628
Each (On a Reel of 12000)
units
Single 28V Surface Mount 1 400 W StmiteFLAT - - 2 - - 200nA 3.1 x 0.95 x 2.05mm -
RS Stock No. 190-7632
Mfr. Part No.STIEC45-24AS
MYR9.19
Each (In a Pack of 5)
units
Single 24V Surface Mount 1 - DO-214AB (SMC) - - 2 - - 200nA 7.15 x 2.25 x 6.25mm -
RS Stock No. 190-6753
Mfr. Part No.ESDCAN05-2BWY
MYR0.40
Each (On a Reel of 3000)
units
Single 36V Surface Mount 2 - SOT-323 Bi-Directional - 3 - - 100nA 2.2 x 1.1 x 1.35mm AEC-Q101
RS Stock No. 190-6778
Mfr. Part No.SM6T27CAY
MYR1.68
Each (On a Reel of 2500)
units
Single 28.2V Surface Mount 1 600 W DO-214AA (SMB) Bi-Directional - 2 - - 200nA 3.95 x 2.25 x 4.6mm AEC-Q101
RS Stock No. 190-6747
Mfr. Part No.DALC112S1RL
MYR2.01
Each (On a Reel of 2500)
units
Single 18V Surface Mount 6 - SOIC - - 8 - - 2µA 5 x 1.65 x 4mm -
RS Stock No. 190-7675
Mfr. Part No.SM15T33AY
MYR3.284
Each (In a Pack of 25)
units
Single 10.2V Surface Mount 1 1.5 kW DO-214AB (SMC) - - 2 - - 200nA 7.15 x 2.25 x 6.25mm AEC-Q101
RS Stock No. 190-6793
Mfr. Part No.STIEC45-24AS
MYR4.948
Each (On a Reel of 2500)
units
Single 24V Surface Mount 1 - DO-214AB (SMC) Uni-Directional - 2 - - 200nA 7.15 x 2.25 x 6.25mm -
RS Stock No. 190-6749
Mfr. Part No.ESDA12-1K
MYR0.346
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 450 W SOD-523 - - 6 - - 500nA 1.3 x 0.7 x 0.9mm -
RS Stock No. 190-6751
Mfr. Part No.ESDALC6V1P5
MYR0.958
Each (On a Reel of 3000)
units
Single 3V Surface Mount 4 - SOT-666 Uni-Directional - 5 - 1.5Ω 100nA 1.7 x 0.62 x 1.3mm -
RS Stock No. 190-7550
Mfr. Part No.LDP24A
MYR13.208
Each (In a Pack of 5)
units
Single 24V Through Hole 1 5 W R6 - - 2 - - 300µA 9.1 (Dia.) x 9.1mm -
RS Stock No. 190-7684
Mfr. Part No.SM6T75CAY
MYR2.149
Each (In a Pack of 25)
units
Single 64.1V Surface Mount 1 600 W DO-214AA (SMB) Bi-Directional - 2 - - 200nA 3.95 x 2.25 x 4.6mm AEC-Q101