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. 121-9534
Mfr. Part No.BZT52C4V7S-7-F
€0.036
Each (On a Reel of 3000)
units
Single 4.7V Surface Mount 1 200 mW SOD-323 Voltage Regulator 7% 2 5mA 80Ω 2µA 1.8 x 1.4 x 1.1mm -
RS Stock No. 751-3786
Mfr. Part No.BZT52C4V7S-7-F
€0.071
Each (On a Tape of 100)
units
Single 4.7V Surface Mount 1 200 mW SOD-323 Voltage Regulator 7% 2 5mA 80Ω 2µA 1.8 x 1.4 x 1.1mm -
RS Stock No. 770-4885
Mfr. Part No.DDZ16CSF-7
€0.011
Each (On a Tape of 100)
units
Single 16V Surface Mount 1 500 mW SOD-323F Voltage Regulator 2.5% 2 10mA 40Ω 70nA 1.8 x 1.35 x 0.75mm -
RS Stock No. 751-3711
Mfr. Part No.BZT52C2V0-7-F
€0.063
Each (On a Tape of 250)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 100Ω 150µA 2.85 x 1.7 x 1.35mm -
RS Stock No. 122-1230
Mfr. Part No.SMAZ5V6-13-F
€0.08
Each (On a Reel of 5000)
units
Single 5.6V Surface Mount 1 1 W SMA Voltage Regulator 5% 2 100mA 5µA 4.6 x 2.92 x 2.1mm -
RS Stock No. 170-9016
Mfr. Part No.BZT585B24T-7
€0.03
Each (On a Reel of 3000)
units
Single 24V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 5mA 250Ω 50nA 1.3 x 0.9 x 0.65mm -
RS Stock No. 751-5057
Mfr. Part No.SMAZ5V6-13-F
€0.25
Each (In a Pack of 50)
units
Single 5.6V Surface Mount 1 1 W SMA Voltage Regulator 5% 2 100mA 5µA 4.6 x 2.92 x 2.1mm -
RS Stock No. 122-1462
Mfr. Part No.DDZ16CSF-7
€0.012
Each (On a Reel of 3000)
units
Single 16V Surface Mount 1 500 mW SOD-323F Voltage Regulator 2.5% 2 10mA 40Ω 70nA 1.8 x 1.35 x 0.75mm -
RS Stock No. 121-9532
Mfr. Part No.BZT52C2V0-7-F
€0.026
Each (On a Reel of 3000)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 100Ω 150µA 2.85 x 1.7 x 1.35mm -
RS Stock No. 921-0887
Mfr. Part No.BZT585B24T-7
€0.06
Each (In a Pack of 100)
units
Single 24V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 5mA 250Ω 50nA 1.3 x 0.9 x 0.65mm -
RS Stock No. 822-2233
Mfr. Part No.BZT52C36-7-F
€0.056
Each (In a Pack of 200)
units
Single 36V Surface Mount 1 500 mW SOD-123 General Purpose 6% 2 2mA 90Ω 100nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 822-2255
Mfr. Part No.BZT52C3V6LP-7
€0.241
Each (In a Pack of 50)
units
Single 3.6V Surface Mount 1 250 mW X1-DFN1006 General Purpose 6% 2 5mA 90Ω 5µA 1.075 x 0.675 x 0.47mm -
RS Stock No. 751-3146
Mfr. Part No.AZ23C15-7-F
€0.096
Each (On a Tape of 100)
units
Common Anode 15V Surface Mount 2 300 mW SOT-23 Voltage Regulator 5% 3 5mA 30Ω 100nA 3 x 1.4 x 1.1mm -
RS Stock No. 751-3755
Mfr. Part No.BZT52C3V6S-7-F
€0.074
Each (In a Pack of 100)
units
Single 3.6V Surface Mount 1 200 mW SOD-323 Voltage Regulator 6% 2 5mA 90Ω 5µA 1.8 x 1.4 x 1.1mm -
RS Stock No. 122-1463
Mfr. Part No.DDZ3V3BSF-7
€0.015
Each (On a Reel of 3000)
units
Single 3.3V Surface Mount 1 500 mW SOD-323F Voltage Regulator 3% 2 20mA 130Ω 20µA 1.8 x 1.35 x 0.75mm -
RS Stock No. 751-3770
Mfr. Part No.BZT52C4V3-7-F
€0.056
Each (In a Pack of 250)
units
Single 4.3V Surface Mount 1 500 mW SOD-123 Voltage Regulator 7% 2 5mA 90Ω 3µA 2.85 x 1.7 x 1.35mm -
RS Stock No. 165-8826
Mfr. Part No.DDZ20C-7
€0.03
Each (On a Reel of 3000)
units
Single 20V Surface Mount 1 500 mW SOD-123 General Purpose 2.5% 2 10mA 28Ω 50nA 2.85 x 1.7 x 1.35mm -
RS Stock No. 822-2472
Mfr. Part No.DFLZ12-7
€0.291
Each (In a Pack of 25)
units
Single 12V Surface Mount 1 1 W POWERDI123 General Purpose 5% 2 50mA 3µA 3 x 1.93 x 1mm -
RS Stock No. 751-3840
Mfr. Part No.BZX84C3V0-7-F
€0.05
Each (On a Tape of 250)
units
Single 3V Surface Mount 1 350 mW SOT-23 Voltage Regulator 7% 3 5mA 95Ω 10µA 3 x 1.4 x 1.1mm -
RS Stock No. 165-8827
Mfr. Part No.DDZ17-7
€0.03
Each (On a Reel of 3000)
units
Single 17V Surface Mount 1 500 mW SOD-123 General Purpose 2.5% 2 10mA 23Ω 50nA 2.85 x 1.7 x 1.35mm -