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. 2552605704
Mfr. Part No.1N4448 (1)
BrandVishay
HK$7,750.00
1 Pack of 50000
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RS Stock No. 2552605653
Mfr. Part No.1N5819 (1)
BrandNEUTRAL
HK$31,000.00
1 Pack of 10000
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RS Stock No. 2552606990
Mfr. Part No.1N5402 (1)
BrandNEUTRAL
HK$1.24
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RS Stock No. 2552606986
Mfr. Part No.1N4002 (1)
BrandNEUTRAL
HK$0.47
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Mfr. Part No.SKR 320/16 (1)
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HK$790.35
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RS Stock No. 2552606991
Mfr. Part No.1N5408 (1)
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HK$1.55
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Mfr. Part No.1N4004 (1)
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HK$0.47
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RS Stock No. 2552605725
Mfr. Part No.VS-63CPQ100PBF (1)
BrandVishay
HK$24,307.88
1 Pack of 500
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RS Stock No. 2552611288
Mfr. Part No.NTCALUG02A103F161L (1)
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HK$8,060.00
1 Pack of 500
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RS Stock No. 2552569786
Mfr. Part No.3047072 (1)
HK$57.30
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RS Stock No. 2552611187
Mfr. Part No.BFC242041502 (1)
BrandVishay
HK$21,529.50
1 Pack of 3000
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RS Stock No. 2552605723
Mfr. Part No.VS-150KR40A (1)
BrandVishay
HK$7,006.62
1 Pack of 25
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RS Stock No. 2552606838
Mfr. Part No.2N7002E-T1-E3 (1)
BrandVishay
HK$6,640.20
1 Pack of 3000
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RS Stock No. 2552606731
Mfr. Part No.CM2009-02QR (1)
BrandNEUTRAL
HK$29.14
1 Pack of 10
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RS Stock No. 2552611196
Mfr. Part No.CRCW08056K04FKEA (1)
BrandVishay
HK$1,100.50
1 Pack of 5000
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RS Stock No. 2552568242
Mfr. Part No.2950103 (1)
HK$1,220.00
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RS Stock No. 2552611186
Mfr. Part No.BFC237029392 (1)
BrandVishay
HK$6,007.80
1 Pack of 2000
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RS Stock No. 2552606837
Mfr. Part No.SI7461DP-T1-GE3 (1)
BrandVishay
HK$44,867.85
1 Pack of 3000
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RS Stock No. 2508955352
Mfr. Part No.NTE5198A
HK$148.30
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RS Stock No. 2552605659
Mfr. Part No.2N7002K-T1-E3 (1)
BrandVishay
HK$2,845.80
1 Pack of 3000
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