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. 145-5547
Mfr. Part No.BZX85C10
SGD0.052
Each (In a Bag of 1000)
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Single 10V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 25mA 500nA 5.2mm 2.72mm
RS Stock No. 136-4860
Mfr. Part No.BZX79-C3V0,133
BrandNexperia
SGD0.063
Each (In a Pack of 100)
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Single 3V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 600 Ω @ 1 mA - 4.25mm 1.85mm
RS Stock No. 544-3525
Mfr. Part No.BZX79-C3V0,113
BrandNexperia
SGD0.162
Each (In a Pack of 20)
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Single 3V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 95Ω 10µA 4.25mm -
RS Stock No. 166-0301
Mfr. Part No.BZX79-C3V0,113
BrandNexperia
SGD0.029
Each (On a Reel of 10000)
units
Single 3V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 95Ω 10µA 4.25mm -
RS Stock No. 124-2303
Mfr. Part No.BZX79-C12,113
BrandNexperia
SGD0.026
Each (On a Reel of 10000)
units
Single 12V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 25Ω 100nA 4.25mm -
RS Stock No. 544-4477
Mfr. Part No.BZX79-C12,113
BrandNexperia
SGD0.12
Each (In a Pack of 20)
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Single 12V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 25Ω 100nA 4.25mm -
RS Stock No. 163-2536
Mfr. Part No.MMSZ8V2T1G
SGD0.047
Each (On a Reel of 3000)
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Single 8.2V Surface Mount 1 500 mW SOD-123 Voltage Regulator ±5% 2 5mA 15Ω 700nA 2.69mm -
RS Stock No. 544-9797
Mfr. Part No.MMSZ8V2T1G
SGD0.13
Each (In a Pack of 50)
units
Single 8.2V Surface Mount 1 500 mW SOD-123 Voltage Regulator ±5% 2 5mA 15Ω 700nA 2.69mm -
RS Stock No. 759-8844
Mfr. Part No.BZX85C16
SGD0.106
Each (In a Pack of 100)
units
Single 16V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 15Ω 500nA 5.2mm 2.72mm
RS Stock No. 145-3085
Mfr. Part No.MMBZ5222BLT1G
SGD0.023
Each (On a Reel of 3000)
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Single 2.5V Surface Mount 1 300 mW SOT-23 Voltage Regulator 5% 3 20mA 30Ω 100µA 3.04mm -
RS Stock No. 179-1140
Mfr. Part No.BZV85-C15,113
BrandNexperia
SGD0.074
Each (On a Reel of 5000)
units
Single 15V Through Hole 1 1.3 W DO-41 Voltage Regulator ±5% 2 15mA 15Ω 50nA 4.8mm -
RS Stock No. 166-0249
Mfr. Part No.BZV55-B10,115
BrandNexperia
SGD0.032
Each (On a Reel of 7500)
units
Single 10V Surface Mount 1 500 mW MiniMELF Voltage Regulator 2% 2 5mA 20Ω 200nA 3.7mm -
RS Stock No. 178-7582
Mfr. Part No.MMSZ5248BT1G
SGD0.082
Each (On a Reel of 3000)
units
Single 18V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 7mA 21Ω 100nA 2.69mm -
RS Stock No. 166-1928
Mfr. Part No.BZX85C16
SGD0.048
Each (In a Bag of 1000)
units
Single 16V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 15Ω 500nA 5.2mm 2.72mm
RS Stock No. 163-1930
Mfr. Part No.1N5372BRLG
SGD0.218
Each (On a Reel of 4000)
units
Single 62V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 20mA 42 Ω, 400 Ω 500nA - 3.68mm
RS Stock No. 145-3104
Mfr. Part No.BZX84C27LT1G
SGD0.021
Each (On a Reel of 3000)
units
Single 27V Surface Mount 1 300 mW SOT-23 Voltage Regulator 7% 3 2mA 80Ω 50nA 2.9mm -
RS Stock No. 166-0569
Mfr. Part No.PDZ5.1B,115
BrandNexperia
SGD0.031
Each (On a Reel of 3000)
units
Single 5.1V Surface Mount 1 400 mW SOD-323 Voltage Regulator 2% 2 5mA 60Ω 2µA 1.8mm -
RS Stock No. 800-8784
Mfr. Part No.1N5372BRLG
SGD0.472
Each (In a Pack of 50)
units
Single 62V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 20mA 42 Ω, 400 Ω 500nA - 3.68mm
RS Stock No. 793-0790
Mfr. Part No.MMBZ5222BLT1G
SGD0.063
Each (On a Tape of 200)
units
Single 2.5V Surface Mount 1 300 mW SOT-23 Voltage Regulator 5% 3 20mA 30Ω 100µA 3.04mm -
RS Stock No. 484-3261
Mfr. Part No.BZV55-B6V2,115
BrandNexperia
SGD0.278
Each (In a Pack of 50)
units
Single 6.2V Surface Mount 1 500 mW MiniMELF Voltage Regulator 2% 2 5mA 10Ω 3µA 3.7mm -
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