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. 476-1759
Mfr. Part No.UDZSTE-17 9.1B
BrandROHM
SGD0.086
Each (In a Pack of 100)
units
Single 9.1V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 30Ω 500nA 1.7mm -
RS Stock No. 700-2539
Mfr. Part No.EDZTE615.1B
BrandROHM
SGD0.121
Each (In a Pack of 10)
units
Single 5.1V Surface Mount 1 100 mW EMD Voltage Regulator 2% 2 5mA 80Ω 2µA 1.2mm -
RS Stock No. 752-5896
Mfr. Part No.KDZTR3.6B
BrandROHM
SGD0.313
Each (In a Pack of 10)
units
Single 3.8V Surface Mount 1 1 W SOD-123 Voltage Regulator 5% 2 40mA - 60µA 2.6mm -
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. 169-0467
Mfr. Part No.UDZSTE-1713B
BrandROHM
SGD0.065
Each (On a Reel of 3000)
units
Single 13V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 37Ω 100nA 1.7mm -
RS Stock No. 476-0273
Mfr. Part No.UDZSTE-17 13B
BrandROHM
SGD0.118
Each (In a Pack of 100)
units
Single 13V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 37Ω 100nA 1.7mm -
RS Stock No. 700-2674
Mfr. Part No.UDZSTE-1713B
BrandROHM
SGD0.185
Each (In a Pack of 10)
units
Single 13V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 37Ω 100nA 1.7mm -
RS Stock No. 133-3210
Mfr. Part No.KDZVTR4.3B
BrandROHM
SGD0.18
Each (In a Pack of 50)
units
Single 4.3V Surface Mount 1 1 W SOD-123FL Voltage Regulator - 2 - - 20µA 2.7mm -
RS Stock No. 177-7898
Mfr. Part No.KDZVTR4.3B
BrandROHM
SGD0.135
Each (On a Reel of 3000)
units
Single 4.3V Surface Mount 1 1 W SOD-123FL Voltage Regulator - 2 - - 20µA 2.7mm -
RS Stock No. 263-6667
Mfr. Part No.UDZSTE-175.6B
BrandROHM
SGD0.132
Each (In a Pack of 10)
units
Single 5.6V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 60Ω 1µA 1.7mm -
RS Stock No. 476-0289
Mfr. Part No.UDZSTE-17 15B
BrandROHM
SGD0.121
Each (In a Pack of 100)
units
Single 15V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 42Ω 100nA 1.7mm -
RS Stock No. 752-5893
Mfr. Part No.KDZTR27B
BrandROHM
SGD0.448
Each (In a Pack of 10)
units
Single 27V Surface Mount 1 1 W SOD-123 Voltage Regulator 7% 2 10mA - 10µA 2.6mm -
RS Stock No. 476-0172
Mfr. Part No.UDZSTE-17 5.6B
BrandROHM
SGD0.179
Each (In a Pack of 100)
units
Single 5.6V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 60Ω 1µA 1.7mm -
RS Stock No. 170-2442
Mfr. Part No.UDZSTE-175.6B
BrandROHM
SGD0.065
Each (On a Reel of 3000)
units
Single 5.6V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 60Ω 1µA 1.7mm -
RS Stock No. 826-7951
Mfr. Part No.UDZVTE-175.6B
BrandROHM
SGD0.088
Each (In a Pack of 200)
units
Single 5.6V Surface Mount 1 200 mW SOD-323 General Purpose - 2 5mA 60Ω 1µA 1.7mm -
RS Stock No. 826-7860
Mfr. Part No.EMZ6.8NTL
BrandROHM
SGD0.22
Each (In a Pack of 50)
units
Common Anode 6.8V Surface Mount 2 150 mW SOT-416 (SC-75A) General Purpose - 3 5mA 40Ω 500nA 1.6mm -
RS Stock No. 826-7872
Mfr. Part No.FTZU6.2ET148
BrandROHM
SGD0.359
Each (In a Pack of 30)
units
Common Anode 6.2V Surface Mount 4 200 mW SC-74 General Purpose - 5 5mA 60Ω 3µA 2.9mm -
RS Stock No. 700-2738
Mfr. Part No.UDZSTE-177.5B
BrandROHM
SGD0.21
Each (In a Pack of 10)
units
Single 7.5V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 30Ω 500nA 1.7mm -
RS Stock No. 124-6570
Mfr. Part No.EDZVT2R6.2B
BrandROHM
SGD0.042
Each (In a Pack of 200)
units
Single 6.2V Surface Mount 1 150 mW SOD-523 Voltage Regulator - 2 5mA 100Ω 1µA 1.25mm -
RS Stock No. 169-0440
Mfr. Part No.EDZTE613.6B
BrandROHM
SGD0.071
Each (On a Reel of 3000)
units
Single 3.6V Surface Mount 1 150 mW EMD Voltage Regulator 3% 2 5mA 100Ω 10µA 1.2mm -