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. 146-2336
Mfr. Part No.BZT52B15 RH
HK$0.198
Each (On a Reel of 3000)
units
Single 15V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 30Ω 45nA 2.7mm 1.7mm
RS Stock No. 796-9962
Mfr. Part No.BZT52B15 RH
HK$0.282
Each (In a Pack of 250)
units
Single 15V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 30Ω 45nA 2.7mm 1.7mm
RS Stock No. 170-4201
Mfr. Part No.BZT52B10 RH
HK$0.358
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω - 2.7mm 1.7mm
RS Stock No. 170-3960
Mfr. Part No.BZT52C16 RH
HK$0.262
Each (On a Reel of 3000)
units
Single 16V Surface Mount 1 500 mW SOD-123F General Purpose 5% 2 5mA 40Ω 45nA 2.7mm 1.7mm
RS Stock No. 748-5063
Mfr. Part No.BZX85C10 R0
HK$1.435
Each (In a Pack of 100)
units
Single 10V Through Hole 1 1.3 W DO-41 Voltage Regulator 5% 2 25mA 500nA 4.25mm -
RS Stock No. 169-9305
Mfr. Part No.BZX85C6V2 R0
HK$0.476
Each (On a Tape of 5000)
units
Single 6.2V Through Hole 1 1.3 W DO-41 Voltage Regulator 5% 2 35mA 1µA 4.25mm -
RS Stock No. 687-5453
Mfr. Part No.1N4744A R0
HK$3.582
Each (In a Pack of 50)
units
Single 15V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 17mA 14Ω 5µA 5.2mm 2.7mm
RS Stock No. 170-4232
Mfr. Part No.BZT52B75S RR
HK$0.289
Each (On a Reel of 3000)
units
Single 75V Surface Mount 1 200 mW SOD-323F General Purpose 2% 2 2mA 255Ω 45nA 1.8mm 1.35mm
RS Stock No. 748-5029
Mfr. Part No.BZV55C3V3 L1
HK$1.014
Each (In a Pack of 200)
units
Single 3.3V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 5mA 85Ω 2µA 3.7mm -
RS Stock No. 169-9021
Mfr. Part No.BZT55C4V3 L0 / L1
HK$0.327
Each (On a Reel of 2500)
units
Single 4.3V Surface Mount 1 500 mW Quadro MiniMelf Voltage Regulator 7% 2 5mA 75Ω 1µA 3.7mm 1.6mm
RS Stock No. 687-5459
Mfr. Part No.1N4742A R0
HK$3.335
Each (In a Pack of 50)
units
Single 12V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 21mA 5µA 5.2mm 2.7mm
RS Stock No. 687-5526
Mfr. Part No.BZD27C47P R3
HK$3.51
Each (In a Pack of 25)
units
Single 47V Surface Mount 1 800 mW Sub SMA Voltage Regulator 6% 2 10mA 45Ω 1µA 2.9mm 1.9mm
RS Stock No. 169-9125
Mfr. Part No.1N4744A R0
HK$0.764
Each (On a Reel of 5000)
units
Single 15V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 17mA 14Ω 5µA 5.2mm 2.7mm
RS Stock No. 169-9128
Mfr. Part No.1N4747A R0
HK$0.776
Each (On a Tape of 5000)
units
Single 20V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 12.5mA 22Ω 5µA 5.2mm 2.7mm
RS Stock No. 170-4211
Mfr. Part No.BZT52B2V7 RH
HK$0.335
Each (On a Reel of 3000)
units
Single 2.7V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 100Ω 18µA 2.7mm 1.7mm
RS Stock No. 796-9940
Mfr. Part No.BZT52B11 RH
HK$1.195
Each (In a Pack of 250)
units
Single 11V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω 90nA 2.7mm 1.7mm
RS Stock No. 170-4001
Mfr. Part No.BZT52C5V6S RR
HK$0.317
Each (On a Reel of 3000)
units
Single 5.6V Surface Mount 1 200 mW SOD-323F General Purpose 5% 2 5mA 40Ω 900nA 1.8mm 1.35mm
RS Stock No. 687-5471
Mfr. Part No.1N4750A R0
HK$3.335
Each (In a Pack of 50)
units
Single 27V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 9.5mA 35Ω 5µA 5.2mm 2.7mm
RS Stock No. 170-4233
Mfr. Part No.BZT52B7V5 RH
HK$0.325
Each (On a Reel of 3000)
units
Single 7.5V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 15Ω 900nA 2.7mm 1.7mm
RS Stock No. 687-5481
Mfr. Part No.1N4756A R0
HK$3.615
Each (In a Pack of 50)
units
Single 47V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 5.5mA 80Ω 5µA 5.2mm 2.7mm