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. 165-8819
Mfr. Part No.BZT52C2V0T-7
$0.088
Each (On a Reel of 3000)
units
Single 2.4V Surface Mount 1 300 mW SOD-523 General Purpose 5% 2 5mA 100Ω 150µA 1.3mm -
RS Stock No. 822-2220
Mfr. Part No.BZT52C2V0T-7
$0.071
Each (In a Pack of 100)
units
Single 2.4V Surface Mount 1 300 mW SOD-523 General Purpose 5% 2 5mA 100Ω 150µA 1.3mm -
RS Stock No. 170-9022
Mfr. Part No.BZT585B33T-7
$0.051
Each (On a Reel of 3000)
units
Single 33V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 2mA 325Ω 50nA 1.3mm -
RS Stock No. 921-0906
Mfr. Part No.BZT585B33T-7
$0.098
Each (In a Pack of 100)
units
Single 33V Surface Mount 1 350 mW SOD-523 Precision ±2% 2 2mA 325Ω 50nA 1.3mm -
RS Stock No. 770-5052
Mfr. Part No.DDZ20ASF-7
$0.021
Each (In a Pack of 100)
units
Single 18.5V Surface Mount 1 500 mW SOD-323F Voltage Regulator 2.5% 2 10mA 50Ω 70nA 1.8mm -
RS Stock No. 708-1860
Mfr. Part No.AZ23C6V8-7-F
$0.216
Each (In a Pack of 50)
units
Common Anode 6.8V Surface Mount 2 300 mW SOT-23 ESD Suppressor 5% 3 5mA 150Ω 100nA 3mm -
RS Stock No. 122-0897
Mfr. Part No.BZT52C11-7-F
$0.035
Each (On a Reel of 3000)
units
Single 11V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 20Ω 100nA 2.85mm -
RS Stock No. 738-4989
Mfr. Part No.BZX84C4V7-7-F
$0.081
Each (On a Tape of 200)
units
Single 4.7V Surface Mount 1 350 mW SOT-23 Voltage Regulator 7% 3 5mA 500Ω 3µA 3mm -
RS Stock No. 121-9536
Mfr. Part No.DDZ9678-7
$0.065
Each (On a Reel of 3000)
units
Single 1.8V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 7.5µA 2.85mm -
RS Stock No. 738-4942
Mfr. Part No.BZT52C15S-7-F
$0.049
Each (In a Pack of 200)
units
Single 15V Surface Mount 1 200 mW SOD-323 Voltage Regulator 6% 2 5mA 200Ω 100nA 1.8mm -
RS Stock No. 122-1502
Mfr. Part No.BZX84B36-7-F
$0.031
Each (On a Reel of 3000)
units
Single 36V Surface Mount 1 350 mW SOT-23 Voltage Regulator 2% 3 2mA 90Ω 100nA 3mm -
RS Stock No. 169-0786
Mfr. Part No.DDZ20ASF-7
$0.031
Each (On a Reel of 3000)
units
Single 18.5V Surface Mount 1 500 mW SOD-323F Voltage Regulator 2.5% 2 10mA 50Ω 70nA 1.8mm -
RS Stock No. 121-9505
Mfr. Part No.AZ23C4V7-7-F
$0.097
Each (On a Reel of 3000)
units
Common Anode 4.7V Surface Mount 2 300 mW SOT-23 Voltage Regulator 5% 3 5mA 78Ω - 3mm -
RS Stock No. 122-0294
Mfr. Part No.BZX84C4V7-7-F
$0.041
Each (On a Reel of 3000)
units
Single 4.7V Surface Mount 1 350 mW SOT-23 Voltage Regulator 7% 3 5mA 500Ω 3µA 3mm -
RS Stock No. 751-3152
Mfr. Part No.AZ23C4V7-7-F
$0.342
Each (On a Tape of 100)
units
Common Anode 4.7V Surface Mount 2 300 mW SOT-23 Voltage Regulator 5% 3 5mA 78Ω - 3mm -
RS Stock No. 751-3922
Mfr. Part No.DDZ9678-7
$0.142
Each (In a Pack of 100)
units
Single 1.8V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 7.5µA 2.85mm -
RS Stock No. 751-3676
Mfr. Part No.BZT52C11-7-F
$0.06
Each (On a Tape of 250)
units
Single 11V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 20Ω 100nA 2.85mm -
RS Stock No. 790-4533
Mfr. Part No.BZX84B36-7-F
$0.085
Each (In a Pack of 100)
units
Single 36V Surface Mount 1 350 mW SOT-23 Voltage Regulator 2% 3 2mA 90Ω 100nA 3mm -
RS Stock No. 166-0334
Mfr. Part No.BZT52C15S-7-F
$0.043
Each (On a Reel of 3000)
units
Single 15V Surface Mount 1 200 mW SOD-323 Voltage Regulator 6% 2 5mA 200Ω 100nA 1.8mm -
RS Stock No. 166-0440
Mfr. Part No.AZ23C6V8-7-F
$0.107
Each (On a Reel of 3000)
units
Common Anode 6.8V Surface Mount 2 300 mW SOT-23 ESD Suppressor 5% 3 5mA 150Ω 100nA 3mm -