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. 774-3322
Mfr. Part No.1N5383BG
HK$3.05
Each (In a Pack of 10)
units
Single 150V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 8mA 330Ω 500nA 8.89mm -
RS Stock No. 170-3470
Mfr. Part No.1N5383BG
HK$1.112
Each (In a Bag of 1000)
units
Single 150V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 8mA 330Ω 500nA 8.89mm -
RS Stock No. 625-6530
Mfr. Part No.1N5383BRLG
HK$3.658
Each (In a Pack of 5)
units
Single 150V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 8mA 330Ω 500nA 8.89mm 3.68mm
RS Stock No. 103-3901
Mfr. Part No.1N5383BRLG
HK$1.007
Each (On a Reel of 4000)
units
Single 150V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 8mA 330Ω 500nA 8.89mm 3.68mm
RS Stock No. 791-6179
Mfr. Part No.MMSZ4679T1G
HK$0.555
Each (In a Pack of 100)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 5µA 2.84mm 1.8mm
RS Stock No. 162-9443
Mfr. Part No.MMSZ4679T1G
HK$0.276
Each (On a Reel of 3000)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 0.05mA - 5µA 2.84mm 1.8mm
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. 169-8569
Mfr. Part No.BZX85C18
HK$0.46
Each (In a Bag of 1000)
units
Single 18V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 20Ω 500nA 5.2mm -
RS Stock No. 759-8848
Mfr. Part No.BZX85C18
HK$0.805
Each (In a Pack of 100)
units
Single 18V Through Hole 1 1 W DO-41 Voltage Regulator 5% 2 15mA 20Ω 500nA 5.2mm -
RS Stock No. 544-3503
Mfr. Part No.BZX79-C2V4,113
BrandNexperia
HK$0.95
Each (In a Pack of 20)
units
Single 2.4V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 100Ω 50µA 4.25mm 1.85mm
RS Stock No. 145-4140
Mfr. Part No.SZMMBZ5245BLT1G
HK$0.187
Each (On a Reel of 3000)
units
Single 15V Surface Mount 1 225 mW SOT-23 Voltage Regulator 5% 3 - 16Ω 100nA 3.04mm 1.4mm
RS Stock No. 781-5496
Mfr. Part No.SZMMBZ5245BLT1G
HK$1.071
Each (On a Tape of 50)
units
Single 15V Surface Mount 1 225 mW SOT-23 Voltage Regulator 5% 3 - 16Ω 100nA 3.04mm 1.4mm
RS Stock No. 770-3377
Mfr. Part No.1SMB5924B-13
HK$2.622
Each (In a Pack of 25)
units
Single 9.1V Surface Mount 1 3 W SMB Voltage Regulator 5% 2 41.2mA 500Ω 5µA 4.57mm 3.94mm
RS Stock No. 165-9757
Mfr. Part No.1SMB5924B-13
HK$0.967
Each (On a Reel of 3000)
units
Single 9.1V Surface Mount 1 3 W SMB Voltage Regulator 5% 2 41.2mA 500Ω 5µA 4.57mm 3.94mm
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. 805-0047
Mfr. Part No.1N4733ATR
HK$0.582
Each (In a Pack of 100)
units
Single 5.1V Through Hole 1 1 W DO-41 General Purpose 5% 2 49mA 10µA 5.2mm -
RS Stock No. 463-280
Mfr. Part No.1N5352BG
HK$2.851
Each (In a Pack of 10)
units
Single 15V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 75mA 2.5Ω 1µA 8.89mm 3.68mm
RS Stock No. 792-5319
Mfr. Part No.1N5352BRLG
HK$2.905
Each (In a Pack of 20)
units
Single 15V Through Hole 1 5 W - Voltage Regulator 5% 2 75mA 2.5Ω 1µA 8.89mm -
RS Stock No. 169-8628
Mfr. Part No.1N4728ATR
HK$0.301
Each (On a Reel of 3000)
units
Single 3.3V Through Hole 1 1 W DO-41 General Purpose 5% 2 76mA 10Ω 100µA 5.2mm -