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. 124-2301
Mfr. Part No.BZV55-C15,115
BrandNexperia
SGD0.043
Each (On a Reel of 2500)
units
Single 15V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 5mA 30Ω 50nA 3.7 x 1.6 x 1.6mm -
RS Stock No. 544-4556
Mfr. Part No.BZV55-C15,115
BrandNexperia
SGD0.247
Each (In a Pack of 20)
units
Single 15V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 5mA 30Ω 50nA 3.7 x 1.6 x 1.6mm -
RS Stock No. 625-6473
Mfr. Part No.1N5373BRLG
SGD0.73
Each (In a Pack of 5)
units
Single 68V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 20mA 44Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 103-3899
Mfr. Part No.1N5373BRLG
SGD0.19
Each (On a Reel of 4000)
units
Single 68V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 20mA 44Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 625-6568
Mfr. Part No.1N5349BRLG
SGD0.58
Each (In a Pack of 10)
units
Single 12V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 2µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 463-278
Mfr. Part No.1N5349BG
SGD0.623
Each (In a Pack of 10)
units
Single 12V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 100mA 2.5Ω 2µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 100-7582
Mfr. Part No.1N5349BG
SGD0.235
Each (In a Box of 1000)
units
Single 12V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 2µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 103-3903
Mfr. Part No.1N5349BRLG
SGD0.194
Each (On a Reel of 4000)
units
Single 12V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 2µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 169-8628
Mfr. Part No.1N4728ATR
SGD0.065
Each (On a Reel of 3000)
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Single 3.3V Through Hole 1 1 W DO-41 General Purpose 5% 2 76mA 10Ω 100µA 2.72 (Dia.) x 5.2mm -
RS Stock No. 805-0034
Mfr. Part No.1N4728ATR
SGD0.118
Each (In a Pack of 100)
units
Single 3.3V Through Hole 1 1 W DO-41 General Purpose 5% 2 76mA 10Ω 100µA 2.72 (Dia.) x 5.2mm -
RS Stock No. 625-6439
Mfr. Part No.1N5362BRLG
SGD0.752
Each (In a Pack of 5)
units
Single 28V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 103-3898
Mfr. Part No.1N5338BRLG
SGD0.195
Each (On a Reel of 4000)
units
Single 5.1V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 240mA 1.5Ω 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 145-2655
Mfr. Part No.1N5221B-TR
BrandVishay
SGD0.053
Each (On a Reel of 10000)
units
Single 2.4V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 30Ω 100µA 1.7 (Dia.) x 3.9mm -
RS Stock No. 463-274
Mfr. Part No.1N5338BG
SGD0.631
Each (In a Pack of 10)
units
Single 5.1V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 240mA 1.5Ω 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 100-7581
Mfr. Part No.1N5338BG
SGD0.237
Each (In a Box of 1000)
units
Single 5.1V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 240mA 1.5Ω 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 163-2331
Mfr. Part No.1N5362BRLG
SGD0.198
Each (On a Reel of 4000)
units
Single 28V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 186-8758
Mfr. Part No.1N5362BG
SGD0.224
Each (In a Box of 1000)
units
Single 28V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 50mA 130Ω 500nA 3.68 (Dia.) x 8.89mm -
RS Stock No. 186-9203
Mfr. Part No.1N5362BG
SGD0.56
Each (In a Pack of 25)
units
Single 28V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 50mA 130Ω 500nA 3.68 (Dia.) x 8.89mm -
RS Stock No. 811-5933
Mfr. Part No.1N5221B-TR
BrandVishay
SGD0.279
Each (In a Pack of 50)
units
Single 2.4V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 30Ω 100µA 1.7 (Dia.) x 3.9mm -
RS Stock No. 625-6451
Mfr. Part No.1N5338BRLG
SGD0.762
Each (In a Pack of 5)
units
Single 5.1V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 240mA 1.5Ω 1µA 8.89 x 3.68 x 3.68mm -