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. 103-7574
Mfr. Part No.BZX79-C5V1,113
BrandNexperia
£0.012
Each (On a Reel of 10000)
Units
Single 5.1V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 60Ω 2µA 4.25 x 1.85 x 1.85mm -
RS Stock No. 136-4788
Mfr. Part No.BZX79-C5V1,133
BrandNexperia
£0.013
Each (On a Tape of 10000)
Units
Single 5.1V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5% 2 5mA 480 Ω @ 1 mA - 1.85 (Dia.) x 4.25mm -
RS Stock No. 544-3597
Mfr. Part No.BZX79-C5V1,113
BrandNexperia
£0.088
Each (In a Pack of 20)
Units
Single 5.1V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 60Ω 2µA 4.25 x 1.85 x 1.85mm -
RS Stock No. 136-4856
Mfr. Part No.BZX79-C5V1,133
BrandNexperia
£0.037
Each (In a Pack of 100)
Units
Single 5.1V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5% 2 5mA 480 Ω @ 1 mA - 1.85 (Dia.) x 4.25mm -
RS Stock No. 625-6451
Mfr. Part No.1N5338BRLG
£0.35
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 -
RS Stock No. 463-274
Mfr. Part No.1N5338BG
£0.264
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. 103-3898
Mfr. Part No.1N5338BRLG
£0.092
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. 100-7581
Mfr. Part No.1N5338BG
£0.107
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. 100-7582
Mfr. Part No.1N5349BG
£0.111
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. 625-6568
Mfr. Part No.1N5349BRLG
£0.275
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. 103-3903
Mfr. Part No.1N5349BRLG
£0.092
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. 463-278
Mfr. Part No.1N5349BG
£0.296
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. 166-1377
Mfr. Part No.BZV90-C6V2,115
BrandNexperia
£0.155
Each (On a Reel of 1000)
Units
Single 6.2V Surface Mount 1 1.5 W SOT-223 (SC-73) Voltage Regulator 5% 4 5mA 10Ω 3µA 6.7 x 3.7 x 1.7mm -
RS Stock No. 508-185
Mfr. Part No.BZV90-C6V2,115
BrandNexperia
£0.32
Each (In a Pack of 10)
Units
Single 6.2V Surface Mount 1 1.5 W SOT-223 (SC-73) Voltage Regulator 5% 4 5mA 10Ω 3µA 6.7 x 3.7 x 1.7mm -
RS Stock No. 103-3919
Mfr. Part No.1N5359BRLG
£0.095
Each (On a Reel of 4000)
Units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 654-7640
Mfr. Part No.1N5359BRLG
£0.344
Each (In a Pack of 5)
Units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 463-808
Mfr. Part No.1N5359BG
£0.301
Each (In a Pack of 10)
Units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 102-1396
Mfr. Part No.1N5359BG
£0.104
Each (In a Box of 1000)
Units
Single 24V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 50mA 3.5Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 124-2303
Mfr. Part No.BZX79-C12,113
BrandNexperia
£0.012
Each (On a Reel of 10000)
Units
Single 12V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 25Ω 100nA 4.25 x 1.85 x 1.85mm -
RS Stock No. 544-4477
Mfr. Part No.BZX79-C12,113
BrandNexperia
£0.088
Each (In a Pack of 20)
Units
Single 12V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 25Ω 100nA 4.25 x 1.85 x 1.85mm -