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. 122-2861
Mfr. Part No.DDZ9699T-7
SGD0.11
Each (On a Reel of 3000)
units
Single 12V Surface Mount 1 150 mW SOD-523 General Purpose 5% 2 0.05mA - 50nA 1.3 x 0.9 x 0.65mm -
RS Stock No. 822-2413
Mfr. Part No.DDZ9699T-7
SGD0.236
Each (In a Pack of 100)
units
Single 12V Surface Mount 1 150 mW SOD-523 General Purpose 5% 2 0.05mA - 50nA 1.3 x 0.9 x 0.65mm -
RS Stock No. 738-5042
Mfr. Part No.MMSZ5230B-7-F
SGD0.103
Each (In a Pack of 100)
units
Single 4.7V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 20mA 19Ω 5µA 2.85 x 1.7 x 1.35mm -
RS Stock No. 122-0298
Mfr. Part No.MMSZ5230B-7-F
SGD0.049
Each (On a Reel of 3000)
units
Single 4.7V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 20mA 19Ω 5µA 2.85 x 1.7 x 1.35mm -
RS Stock No. 165-8828
Mfr. Part No.DDZ6V2B-7
SGD0.056
Each (On a Reel of 3000)
units
Single 6.2V Surface Mount 1 500 mW SOD-123 General Purpose 2.5% 2 20mA 500nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 921-0922
Mfr. Part No.BZT585B4V3T-7
SGD0.11
Each (In a Pack of 100)
units
Single 4.3V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 5mA 600Ω 3µA 1.3 x 0.9 x 0.65mm -
RS Stock No. 823-1558
Mfr. Part No.MMSZ5246B-7-F
SGD0.104
Each (In a Pack of 200)
units
Single 16V Surface Mount 1 500 mW SOD-123 General Purpose 5% 2 7.8mA 17Ω 100nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 170-9026
Mfr. Part No.BZT585B4V3T-7
SGD0.049
Each (On a Reel of 3000)
units
Single 4.3V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 5mA 600Ω 3µA 1.3 x 0.9 x 0.65mm -
RS Stock No. 822-2365
Mfr. Part No.DDZ6V2B-7
SGD0.121
Each (In a Pack of 200)
units
Single 6.2V Surface Mount 1 500 mW SOD-123 General Purpose 2.5% 2 20mA 500nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 146-0573
Mfr. Part No.MMSZ5246B-7-F
SGD0.048
Each (On a Reel of 3000)
units
Single 16V Surface Mount 1 500 mW SOD-123 General Purpose 5% 2 7.8mA 17Ω 100nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 166-0424
Mfr. Part No.BZT52C3V9S-7-F
SGD0.061
Each (On a Reel of 3000)
units
Single 3.9V Surface Mount 1 200 mW SOD-323 Voltage Regulator 5% 2 5mA 90Ω 3µA 1.8 x 1.4 x 1.1mm -
RS Stock No. 822-2191
Mfr. Part No.BZT52C12S-7-F
SGD0.097
Each (In a Pack of 100)
units
Single 12V Surface Mount 1 200 mW SOD-323 General Purpose 5% 2 5mA 25Ω 100nA 1.8 x 1.4 x 1.1mm -
RS Stock No. 169-0680
Mfr. Part No.DDZ9704-7
SGD0.073
Each (On a Reel of 3000)
units
Single 17V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 50nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 751-3761
Mfr. Part No.BZT52C3V9S-7-F
SGD0.129
Each (On a Tape of 100)
units
Single 3.9V Surface Mount 1 200 mW SOD-323 Voltage Regulator 5% 2 5mA 90Ω 3µA 1.8 x 1.4 x 1.1mm -
RS Stock No. 169-7333
Mfr. Part No.BZT52C12S-7-F
SGD0.046
Each (On a Reel of 3000)
units
Single 12V Surface Mount 1 200 mW SOD-323 General Purpose 5% 2 5mA 25Ω 100nA 1.8 x 1.4 x 1.1mm -
RS Stock No. 738-4948
Mfr. Part No.BZT52C15-7-F
SGD0.104
Each (On a Tape of 200)
units
Single 15V Surface Mount 1 500 mW SOD-123 Voltage Regulator 6% 2 5mA 200Ω 100nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 121-9477
Mfr. Part No.BZT52C15-7-F
SGD0.047
Each (On a Reel of 3000)
units
Single 15V Surface Mount 1 500 mW SOD-123 Voltage Regulator 6% 2 5mA 200Ω 100nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 122-0914
Mfr. Part No.BZX84C6V2-7-F
SGD0.036
Each (On a Reel of 3000)
units
Single 6.2V Surface Mount 1 350 mW SOT-23 Voltage Regulator 7% 3 5mA 10Ω 3µA 3 x 1.4 x 1.1mm -
RS Stock No. 751-3853
Mfr. Part No.BZX84C6V2-7-F
SGD0.087
Each (On a Tape of 250)
units
Single 6.2V Surface Mount 1 350 mW SOT-23 Voltage Regulator 7% 3 5mA 10Ω 3µA 3 x 1.4 x 1.1mm -
RS Stock No. 751-3938
Mfr. Part No.DDZ9704-7
SGD0.154
Each (On a Tape of 100)
units
Single 17V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 50nA 2.85 x 1.7 x 1.35mm -