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. 190-6750
Mfr. Part No.ESDA7P120-1U1M
SGD0.162
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. 190-6751
Mfr. Part No.ESDALC6V1P5
SGD0.321
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. 190-7556
Mfr. Part No.DALC112S1RL
SGD1.499
Each (In a Pack of 10)
units
Single 18V Surface Mount 6 - SOIC - - 8 - - 2µA 5 x 1.65 x 4mm -
RS Stock No. 190-6756
Mfr. Part No.LDP24A
SGD2.52
Each (On a Tape of 100)
units
Single 24V Through Hole 1 5 W R6 - - 2 - - 300µA 9.1 (Dia.) x 9.1mm -
RS Stock No. 190-6752
Mfr. Part No.ESDAXLC6-1BT2Y
SGD0.10
Each (On a Reel of 12000)
units
Single 3V Surface Mount 1 40 W SOD-882T Bi-Directional - 2 - 0.25Ω 50nA 1.05 x 0.35 x 0.65mm AEC-Q101
RS Stock No. 190-7691
Mfr. Part No.SMA6J12A-TR
SGD0.584
Each (In a Pack of 25)
units
Single 12V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9 x 2.25 x 4.6mm -
RS Stock No. 190-6778
Mfr. Part No.SM6T27CAY
SGD0.596
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. 190-7649
Mfr. Part No.ESDCAN06-2BWY
SGD0.431
Each (In a Pack of 50)
units
Single 35V Surface Mount 2 - SOT-323 Bi-Directional - 3 - - 100nA 2.2 x 1.1 x 1.35mm AEC-Q101
RS Stock No. 190-7550
Mfr. Part No.LDP24A
SGD3.812
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. 190-6749
Mfr. Part No.ESDA12-1K
SGD0.105
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. 190-7698
Mfr. Part No.SMA6J40A-TR
SGD0.584
Each (In a Pack of 25)
units
Single 40V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9 x 2.25 x 4.6mm -
RS Stock No. 190-6783
Mfr. Part No.SMA6J24A-TR
SGD0.252
Each (On a Reel of 5000)
units
Single 24V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9 x 2.25 x 4.6mm -
RS Stock No. 190-6747
Mfr. Part No.DALC112S1RL
SGD0.715
Each (On a Reel of 2500)
units
Single 18V Surface Mount 6 - SOIC - - 8 - - 2µA 5 x 1.65 x 4mm -
RS Stock No. 190-6748
Mfr. Part No.DSL03-024SC6
SGD0.343
Each (On a Reel of 3000)
units
Single 24V Surface Mount 1 - SOT-23 - - 2 - - 200nA 1.75 x 1.3 x 3.05mm -
RS Stock No. 190-7544
Mfr. Part No.SMA6J6.0A-TR
SGD0.475
Each (In a Pack of 25)
units
Single 6V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 20µA 2.9 x 2.25 x 4.6mm -
RS Stock No. 190-7560
Mfr. Part No.SMCJ18CA-TR
SGD0.728
Each (In a Pack of 25)
units
Single 18V Surface Mount 1 1.5 kW DO-214AB (SMC) Bi-Directional - 2 - - 200nA 7.15 x 2.25 x 6.25mm -
RS Stock No. 190-7695
Mfr. Part No.SMA6J24A-TR
SGD0.642
Each (In a Pack of 25)
units
Single 24V Surface Mount 1 600 W DO-214AC (SMA) - - 2 - - 200nA 2.9 x 2.25 x 4.6mm -
RS Stock No. 190-6779
Mfr. Part No.SM6T56CA
SGD0.225
Each (On a Reel of 2500)
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. 190-7571
Mfr. Part No.SMM4F28A-TR
SGD0.506
Each (In a Pack of 25)
units
Single 28V Surface Mount 1 400 W StmiteFLAT - - 2 - - 200nA 3.1 x 0.95 x 2.05mm -
RS Stock No. 190-6753
Mfr. Part No.ESDCAN05-2BWY
SGD0.159
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