Zener Diodes

A Zener diode is a type of semiconductor diode that is different to a normal diode as it allows current to flow from its anode to its cathode in either a forward or reverse direction, but only when exposed to enough voltage. Zener diodes have been designed to work reliably in the breakdown region, unlike normal diodes which would overheat. They are the most common and the handiest solutions to a number of needs in a circuit design.

Zener diodes are designed to change the direction of 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 that change a direction of flow is called Zener Voltage or Breakdown Voltage. It could be defined for specific diodes anywhere from 1.8 to 200 V.

Key attributes of a Zener diode are:

• Device configuration including a dual or common anode
• Type of Zener, including avalanche or voltage regulator
• Voltage tolerance
• Voltage drift with temperature
• Impedance (max)

What is a typical application 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.

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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 Length Diameter
RS Stock No. 159-6362
Mfr. Part No.1N5230B-TR
BrandVishay
SGD0.033
Each (On a Reel of 10000)
units
Single 4.7V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 19Ω 5µA 3.9mm 1.7mm
RS Stock No. 166-0575
Mfr. Part No.PDZ5.6B,115
BrandNexperia
SGD0.03
Each (On a Reel of 3000)
units
Single 5.6V Surface Mount 1 400 mW SOD-323 Voltage Regulator 2% 2 5mA 50Ω 1µA 1.8mm -
RS Stock No. 166-1223
Mfr. Part No.BZV85-C6V8,113
BrandNexperia
SGD0.056
Each (On a Reel of 5000)
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Single 6.8V Through Hole 1 1.3 W DO-41 Voltage Regulator 5% 2 35mA 3.5Ω 2µA 4.8mm -
RS Stock No. 816-7918
Mfr. Part No.BZX384-B4V7
BrandNexperia
SGD0.055
Each (In a Pack of 200)
units
Single 4.7V Surface Mount 1 300 mW SOD-323 Voltage Regulator 2% 2 5mA 80Ω 3µA 1.8mm -
RS Stock No. 819-3891
Mfr. Part No.SMZJ3804B-E3/52
BrandVishay
SGD0.379
Each (In a Pack of 20)
units
Single 43V Surface Mount 1 1.5 W DO-214AA (SMB) Voltage Regulator 5% 2 8.7mA 950Ω 5µA 4.57mm -
RS Stock No. 178-7085
Mfr. Part No.BZX384-C3V0,115
BrandNexperia
SGD0.037
Each (On a Reel of 3000)
units
Single 3V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 5mA 95Ω 10µA 1.8mm -
RS Stock No. 544-4506
Mfr. Part No.BZX79-C33,113
BrandNexperia
SGD0.108
Each (In a Pack of 20)
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Single 33V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 2mA 80Ω 50nA 4.25mm -
RS Stock No. 146-0440
Mfr. Part No.BZV55-B12,115
BrandNexperia
SGD0.026
Each (On a Reel of 2500)
units
Single 12V Surface Mount 1 500 mW SOD-80C Voltage Regulator 2% 2 - - 100nA - 1.6mm
RS Stock No. 759-8854
Mfr. Part No.BZX85C24
SGD0.117
Each (In a Pack of 100)
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Single 24V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 10mA 25Ω 500nA 5.2mm 2.72mm
RS Stock No. 508-501
Mfr. Part No.BZB984-C5V6,115
BrandNexperia
SGD0.182
Each (In a Pack of 20)
units
Common Anode 5.6V Surface Mount 2 425 mW SOT-663 Voltage Regulator 5% 3 5mA 40Ω 1µA 1.7mm -
RS Stock No. 163-0810
Mfr. Part No.SZ1SMA5929BT3G
SGD0.474
Each (On a Reel of 5000)
units
Single 15V Surface Mount 1 500 mW SMA Voltage Regulator 5% 2 25mA 500nA 4.57mm -
RS Stock No. 811-6043
Mfr. Part No.1N5261B-TR
BrandVishay
SGD0.076
Each (In a Pack of 250)
units
Single 47V Through Hole 1 500 mW DO-35 General Purpose 5% 2 2.7mA 105Ω 100nA 3.9mm 1.7mm
RS Stock No. 163-0818
Mfr. Part No.SZMMSZ4689T1G
SGD0.089
Each (On a Reel of 3000)
units
Single 5.1V Surface Mount 1 500 mW SOD-123 Voltage Regulator - 2 0.05mA - 10µA 2.84mm -
RS Stock No. 792-5307
Mfr. Part No.1N5337BRLG
SGD0.517
Each (In a Pack of 20)
units
Single 4.7V Through Hole 1 5 W - Voltage Regulator 5% 2 260mA 5µA 8.89mm 3.68mm
RS Stock No. 133-2828
Mfr. Part No.RSB16VATR
BrandROHM
SGD0.172
Each (In a Pack of 50)
units
Single 16V Surface Mount 1 500 mW SOD-323HE Bi-Directional - 2 - - 100nA 1.9mm -
RS Stock No. 166-0302
Mfr. Part No.BZX79-C4V3,113
BrandNexperia
SGD0.029
Each (On a Reel of 10000)
units
Single 4.3V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 90Ω 3µA 4.25mm -
RS Stock No. 921-0922
Mfr. Part No.BZT585B4V3T-7
SGD0.094
Each (In a Pack of 100)
units
Single 4.3V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 5mA 600Ω 3µA 1.3mm -
RS Stock No. 170-8024
Mfr. Part No.BZX84-C6V8,235
BrandNexperia
SGD0.03
Each (On a Reel of 10000)
units
Single 6.8V Surface Mount 1 250 mW TO-236 Voltage Regulator ±5% 3 10mA - 2µA 3mm -
RS Stock No. 759-8901
Mfr. Part No.BZX85C9V1
SGD0.128
Each (In a Pack of 100)
units
Single 9.1V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 25mA 1µA 5.2mm 2.72mm
RS Stock No. 166-1235
Mfr. Part No.BZX79-B6V2,113
BrandNexperia
SGD0.036
Each (On a Reel of 5000)
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Single 6.2V Through Hole 1 500 mW DO-35 Voltage Regulator 2% 2 5mA 10Ω 3µA 4.25mm -
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