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 Width
RS Stock No. 476-0324
Mfr. Part No.UDZSTE-17 22B
BrandROHM
$0.14
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 1.25mm
RS Stock No. 169-0470
Mfr. Part No.UDZSTE-1722B
BrandROHM
$0.073
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 1.25mm
RS Stock No. 476-0289
Mfr. Part No.UDZSTE-17 15B
BrandROHM
$0.134
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 1.25mm
RS Stock No. 700-2693
Mfr. Part No.UDZSTE-1722B
BrandROHM
$0.331
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 1.25mm
RS Stock No. 476-8463
Mfr. Part No.UDZSTE-17 36B
BrandROHM
$0.14
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 1.25mm
RS Stock No. 263-6651
Mfr. Part No.UDZSTE-175.1B
BrandROHM
$0.381
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 1.25mm
RS Stock No. 476-0295
Mfr. Part No.UDZSTE-17 16B
BrandROHM
$0.14
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 1.25mm
RS Stock No. 476-8413
Mfr. Part No.UDZSTE-17 24B
BrandROHM
$0.14
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 1.25mm
RS Stock No. 171-4321
Mfr. Part No.KDZLVTR110
BrandROHM
$0.557
Each (In a Pack of 50)
units
Single 104V Surface Mount 1 1 W PMDU, SC-109B, SOD-123FL Voltage Regulator - 2 2mA 220Ω 5µA 2.7mm 1.7mm
RS Stock No. 133-2915
Mfr. Part No.TDZVTR5.6
BrandROHM
$0.558
Each (In a Pack of 50)
units
Single 5.6V Surface Mount 1 500 mW SOD-323HE Voltage Regulator - 2 - - 10µA 2.1mm 1.5mm
RS Stock No. 146-9479
Mfr. Part No.UFZVTE-176.2B
BrandROHM
$0.083
Each (On a Reel of 3000)
units
Single 6.3V Surface Mount 1 500 mW SOD-323FL Voltage Regulator - 2 20mA 10 (Dynamic)Ω 5µA 1.8mm 1.35mm
RS Stock No. 171-5327
Mfr. Part No.UFZVTE-175.6B
BrandROHM
$0.045
Each (On a Reel of 3000)
units
Single 5.45V Surface Mount 1 500 mW SC-90A, SOD-323FL, UMD Voltage Regulator - 2 20mA 13Ω 5µA 1.85mm 1.35mm
RS Stock No. 700-2599
Mfr. Part No.PTZTE254.7B
BrandROHM
$0.77
Each (In a Pack of 5)
units
Single 4.9V Surface Mount 1 1 W SOD-106 Voltage Regulator 5% 2 40mA 10Ω 20µA 4.5mm 2.6mm
RS Stock No. 171-3916
Mfr. Part No.CDZVT2R2.0B
BrandROHM
$0.048
Each (On a Reel of 8000)
units
Single 2.02V Surface Mount 1 100 mW SOD-923, VMN2M Voltage Regulator - 2 5mA 100 Ω, 1000 Ω 120µA 0.91mm 0.65mm
RS Stock No. 148-5706
Mfr. Part No.BZX84C33VLT116
BrandROHM
$0.136
Each (In a Pack of 250)
units
Single 35V Surface Mount 1 250 mW SOT-23 Voltage Regulator ±5% 3 2mA 80Ω 100nA 3.1mm 1.5mm
RS Stock No. 171-4405
Mfr. Part No.PDZVTR6.8B
BrandROHM
$0.502
Each (In a Pack of 50)
units
Single 6.8V Surface Mount 1 1 W PMDTM, SOD-128 Voltage Regulator - 2 40mA 20µA 3.9mm 2.7mm
RS Stock No. 148-6833
Mfr. Part No.BZX84C22VLT116
BrandROHM
$0.097
Each (In a Pack of 250)
units
Single 23.3V Surface Mount 1 250 mW SOT-23 Voltage Regulator ±5% 3 5mA 55Ω 100nA 3.1mm 1.5mm
RS Stock No. 263-6667
Mfr. Part No.UDZSTE-175.6B
BrandROHM
$0.332
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 1.25mm
RS Stock No. 169-0439
Mfr. Part No.EDZTE6127B
BrandROHM
$0.112
Each (On a Reel of 3000)
units
Single 27V Surface Mount 1 150 mW EMD Voltage Regulator 2% 2 2mA 150Ω 100nA 1.2mm 0.8mm
RS Stock No. 171-4407
Mfr. Part No.BZX84B7V5LT116
BrandROHM
$0.063
Each (In a Pack of 250)
units
Single 7.35V Surface Mount 1 250 mW SOT-23, SSD Voltage Regulator - 3 5mA 15Ω 1µA 3.1mm 1.5mm