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. 476-0289
Mfr. Part No.UDZSTE-17 15B
BrandROHM
$0.132
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. 476-0324
Mfr. Part No.UDZSTE-17 22B
BrandROHM
$0.121
Each (In a Pack of 100)
units
Single 22V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 100Ω 100nA 1.7mm -
RS Stock No. 700-2693
Mfr. Part No.UDZSTE-1722B
BrandROHM
$0.234
Each (In a Pack of 10)
units
Single 22V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 100Ω 100nA 1.7mm -
RS Stock No. 169-0470
Mfr. Part No.UDZSTE-1722B
BrandROHM
$0.07
Each (On a Reel of 3000)
units
Single 22V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 100Ω 100nA 1.7mm -
RS Stock No. 826-7863
Mfr. Part No.EDZTE6133B
BrandROHM
$0.141
Each (In a Pack of 100)
units
Single 33V Surface Mount 1 150 mW SOD-523 General Purpose - 2 5mA 250Ω 100nA 1.2mm -
RS Stock No. 476-8463
Mfr. Part No.UDZSTE-17 36B
BrandROHM
$0.121
Each (In a Pack of 100)
units
Single 36V Surface Mount 1 200 mW SOD-323F Voltage Regulator 3% 2 5mA 300Ω 100nA 1.7mm -
RS Stock No. 476-8413
Mfr. Part No.UDZSTE-17 24B
BrandROHM
$0.119
Each (In a Pack of 100)
units
Single 24V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 120Ω 100nA 1.7mm -
RS Stock No. 263-6651
Mfr. Part No.UDZSTE-175.1B
BrandROHM
$0.345
Each (In a Pack of 10)
units
Single 5.1V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 80Ω 2µA 1.7mm -
RS Stock No. 170-2441
Mfr. Part No.UDZSTE-175.1B
BrandROHM
$0.148
Each (On a Reel of 3000)
units
Single 5.1V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 80Ω 2µA 1.7mm -
RS Stock No. 476-0295
Mfr. Part No.UDZSTE-17 16B
BrandROHM
$0.119
Each (In a Pack of 100)
units
Single 16V Surface Mount 1 200 mW SOD-323F Voltage Regulator 2% 2 5mA 50Ω 100nA 1.7mm -
RS Stock No. 171-4377
Mfr. Part No.PDZVTR5.6B
BrandROHM
$0.186
Each (In a Pack of 50)
units
Single 5.6V Surface Mount 1 1 W PMDTM, SOD-128 Voltage Regulator - 2 40mA 20µA 3.9mm -
RS Stock No. 752-5856
Mfr. Part No.KDZTR10B
BrandROHM
$0.489
Each (In a Pack of 10)
units
Single 10V Surface Mount 1 1 W SOD-123 Voltage Regulator 6% 2 40mA - 10µA 2.6mm -
RS Stock No. 183-5204
Mfr. Part No.RSB12WTL
BrandROHM
$0.145
Each (On a Reel of 3000)
units
Single 14.4V Surface Mount 1 150 mW SOT-416 ESD Protection - 3 5mA - 100nA 1.6mm -
RS Stock No. 148-6802
Mfr. Part No.KDZVTR7.5B
BrandROHM
$0.179
Each (In a Pack of 100)
units
Single 8.4V Surface Mount 1 1 W SOD-123FL Voltage Regulator - 2 40mA - 20µA 2.7mm -
RS Stock No. 146-9419
Mfr. Part No.KDZLVTR75
BrandROHM
$0.138
Each (On a Reel of 3000)
units
Single 79V Surface Mount 1 1 W SOD-123FL Voltage Regulator - 2 2mA 220 (Dynamic)Ω 5µA 2.7mm -
RS Stock No. 133-2971
Mfr. Part No.EDZVT2R12B
BrandROHM
$0.052
Each (In a Pack of 200)
units
Single 12V Surface Mount 1 150 mW SOD-523 Voltage Regulator - 2 - 80Ω 100nA 1.25mm -
RS Stock No. 171-3910
Mfr. Part No.BZX84B6V8LT116
BrandROHM
$0.038
Each (On a Reel of 3000)
units
Single 6.66V Surface Mount 1 250 mW SOT-23, SSD Voltage Regulator - 3 5mA 15Ω 2µA 3.1mm -
RS Stock No. 171-4795
Mfr. Part No.PDZVTR20B
BrandROHM
$0.212
Each (In a Pack of 50)
units
Single 20V Surface Mount 1 1 W PMDTM, SOD-128 Voltage Regulator - 2 20mA 14Ω 10µA 3.9mm -
RS Stock No. 169-0439
Mfr. Part No.EDZTE6127B
BrandROHM
$0.082
Each (On a Reel of 3000)
units
Single 27V Surface Mount 1 150 mW EMD Voltage Regulator 2% 2 2mA 150Ω 100nA 1.2mm -
RS Stock No. 148-5715
Mfr. Part No.EDZVT2R22B
BrandROHM
$0.063
Each (In a Pack of 250)
units
Single 22.47V Surface Mount 1 150 mW SOD-523 Voltage Regulator - 2 5mA 100Ω 100nA 1.25mm -