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. 654-7583
Mfr. Part No.1N5347BRLG
£0.336
Each (In a Pack of 5)
Units
Single 10V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 125mA 5µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 103-3917
Mfr. Part No.1N5347BRLG
£0.092
Each (On a Reel of 4000)
Units
Single 10V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 125mA 5µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 463-284
Mfr. Part No.1N5347BG
£0.259
Each (In a Pack of 10)
Units
Single 10V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 125mA 5µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 544-3604
Mfr. Part No.BZX79-C5V6,113
BrandNexperia
£0.086
Each (In a Pack of 20)
Units
Single 5.6V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 40Ω 1µA 4.25 x 1.85 x 1.85mm -
RS Stock No. 100-7584
Mfr. Part No.1N5347BG
£0.099
Each (In a Box of 1000)
Units
Single 10V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 125mA 5µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 136-4871
Mfr. Part No.BZX79-C3V3,133
BrandNexperia
£0.036
Each (In a Pack of 100)
Units
Single 3.3V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5% 2 5mA 600 Ω @ 1 mA - 1.85 (Dia.) x 4.25mm -
RS Stock No. 544-3531
Mfr. Part No.BZX79-C3V3,113
BrandNexperia
£0.088
Each (In a Pack of 20)
Units
Single 3.3V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 95Ω 5µA 4.25 x 1.85 x 1.85mm -
RS Stock No. 103-7573
Mfr. Part No.BZX79-C3V3,113
BrandNexperia
£0.013
Each (On a Reel of 10000)
Units
Single 3.3V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 95Ω 5µA 4.25 x 1.85 x 1.85mm -
RS Stock No. 136-4790
Mfr. Part No.BZX79-C3V3,133
BrandNexperia
£0.013
Each (On a Tape of 10000)
Units
Single 3.3V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5% 2 5mA 600 Ω @ 1 mA - 1.85 (Dia.) x 4.25mm -
RS Stock No. 818-5070
Mfr. Part No.TZX4V3B-TR
BrandVishay
£0.013
Each (In a Pack of 200)
Units
Single 4.2V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 1.7 (Dia.) x 3.9mm -
RS Stock No. 159-6585
Mfr. Part No.TZX4V3B-TR
BrandVishay
£0.013
Each (On a Reel of 10000)
Units
Single 4.2V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 100Ω 5µA 1.7 (Dia.) x 3.9mm -
RS Stock No. 544-3503
Mfr. Part No.BZX79-C2V4,113
BrandNexperia
£0.088
Each (In a Pack of 20)
Units
Single 2.4V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 100Ω 50µA 4.25 x 1.85 x 1.85mm -
RS Stock No. 687-8133
Mfr. Part No.1N5341BRLG
£0.262
Each (In a Pack of 10)
Units
Single 6.2V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 200mA 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 463-795
Mfr. Part No.1N5341BG
£0.301
Each (In a Pack of 10)
Units
Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 103-5049
Mfr. Part No.1N5341BRLG
£0.091
Each (On a Reel of 4000)
Units
Single 6.2V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 200mA 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 170-3364
Mfr. Part No.1N5341BG
£0.117
Each (In a Bag of 1000)
Units
Single 6.2V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 200mA 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 163-2331
Mfr. Part No.1N5362BRLG
£0.097
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. 625-6439
Mfr. Part No.1N5362BRLG
£0.358
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. 186-8758
Mfr. Part No.1N5362BG
£0.104
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
£0.264
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 -