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. 625-6530
Mfr. Part No.1N5383BRLG
Brandonsemi
HK$5.652
Each (In a Pack of 5)
units
Single 150V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 8mA 330Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 170-3470
Mfr. Part No.1N5383BG
Brandonsemi
HK$1.77
Each (In a Bag of 1000)
units
Single 150V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 8mA 330Ω 500nA 3.68 (Dia.) x 8.89mm -
RS Stock No. 774-3322
Mfr. Part No.1N5383BG
Brandonsemi
HK$4.626
Each (In a Pack of 10)
units
Single 150V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 8mA 330Ω 500nA 3.68 (Dia.) x 8.89mm -
RS Stock No. 103-3901
Mfr. Part No.1N5383BRLG
Brandonsemi
HK$1.451
Each (On a Reel of 4000)
units
Single 150V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 8mA 330Ω 500nA 8.89 x 3.68 x 3.68mm -
RS Stock No. 791-6179
Mfr. Part No.MMSZ4679T1G
Brandonsemi
HK$1.189
Each (In a Pack of 100)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 5µA 2.84 x 1.8 x 1.35mm -
RS Stock No. 162-9443
Mfr. Part No.MMSZ4679T1G
Brandonsemi
HK$0.406
Each (On a Reel of 3000)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 5µA 2.84 x 1.8 x 1.35mm -
RS Stock No. 759-8848
Mfr. Part No.BZX85C18
Brandonsemi
HK$1.028
Each (In a Pack of 100)
units
Single 18V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 20Ω 500nA 2.72 (Dia.) x 5.2mm -
RS Stock No. 169-8569
Mfr. Part No.BZX85C18
Brandonsemi
HK$0.492
Each (In a Bag of 1000)
units
Single 18V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 20Ω 500nA 2.72 (Dia.) x 5.2mm -
RS Stock No. 544-3503
Mfr. Part No.BZX79-C2V4,113
BrandNexperia
HK$1.131
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. 145-4140
Mfr. Part No.SZMMBZ5245BLT1G
Brandonsemi
HK$0.273
Each (On a Reel of 3000)
units
Single 15V Surface Mount 1 225 mW SOT-23 Voltage Regulator 5% 3 - 16Ω 100nA 3.04 x 1.4 x 1.01mm -
RS Stock No. 170-4201
Mfr. Part No.BZT52B10 RH
HK$0.358
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω - 2.7 x 1.7 x 1mm -
RS Stock No. 781-5496
Mfr. Part No.SZMMBZ5245BLT1G
Brandonsemi
HK$1.569
Each (On a Tape of 50)
units
Single 15V Surface Mount 1 225 mW SOT-23 Voltage Regulator 5% 3 - 16Ω 100nA 3.04 x 1.4 x 1.01mm -
RS Stock No. 770-3377
Mfr. Part No.1SMB5924B-13
HK$3.977
Each (In a Pack of 25)
units
Single 9.1V Surface Mount 1 3 W SMB Voltage Regulator 5% 2 41.2mA 500Ω 5µA 4.57 x 3.94 x 2.3mm -
RS Stock No. 165-9757
Mfr. Part No.1SMB5924B-13
HK$1.298
Each (On a Reel of 3000)
units
Single 9.1V Surface Mount 1 3 W SMB Voltage Regulator 5% 2 41.2mA 500Ω 5µA 4.57 x 3.94 x 2.3mm -
RS Stock No. 805-0047
Mfr. Part No.1N4733ATR
Brandonsemi
HK$1.417
Each (In a Pack of 100)
units
Single 5.1V Through Hole 1 1 W DO-41 General Purpose 5% 2 49mA 10µA 2.72 (Dia.) x 5.2mm -
RS Stock No. 792-5319
Mfr. Part No.1N5352BRLG
Brandonsemi
HK$4.59
Each (In a Pack of 20)
units
Single 15V Through Hole 1 5 W - Voltage Regulator 5% 2 75mA 2.5Ω 1µA 3.68 (Dia.) x 8.89mm -
RS Stock No. 100-7583
Mfr. Part No.1N5352BG
Brandonsemi
HK$1.848
Each (In a Box of 1000)
units
Single 15V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 75mA 2.5Ω 1µA 8.89 x 3.68 x 3.68mm -
RS Stock No. 169-8628
Mfr. Part No.1N4728ATR
Brandonsemi
HK$0.474
Each (On a Reel of 3000)
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. 811-6009
Mfr. Part No.1N5245B-TR
BrandVishay
HK$0.811
Each (In a Pack of 250)
units
Single 15V Through Hole 1 500 mW DO-35 General Purpose 5% 2 8.5mA 16Ω 100nA 1.7 (Dia.) x 3.9mm -
RS Stock No. 463-280
Mfr. Part No.1N5352BG
Brandonsemi
HK$4.59
Each (In a Pack of 10)
units
Single 15V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 75mA 2.5Ω 1µA 8.89 x 3.68 x 3.68mm -