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. 103-3901
Mfr. Part No.1N5383BRLG
HK$1.04
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. 625-6530
Mfr. Part No.1N5383BRLG
HK$3.98
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. 170-3470
Mfr. Part No.1N5383BG
HK$1.25
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. 162-9443
Mfr. Part No.MMSZ4679T1G
HK$0.282
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. 791-6179
Mfr. Part No.MMSZ4679T1G
HK$0.738
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. 169-8569
Mfr. Part No.BZX85C18
HK$0.574
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. 145-4140
Mfr. Part No.SZMMBZ5245BLT1G
HK$0.188
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$1.112
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. 805-0047
Mfr. Part No.1N4733ATR
HK$0.608
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. 100-7583
Mfr. Part No.1N5352BG
HK$1.19
Each (In a Box of 1000)
units
Single 15V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 75mA 2.5Ω 1µA 8.89mm 3.68mm
RS Stock No. 792-5319
Mfr. Part No.1N5352BRLG
HK$3.008
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. 121-6442
Mfr. Part No.1N5352BRLG
HK$1.03
Each (On a Reel of 4000)
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$0.317
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 -
RS Stock No. 463-280
Mfr. Part No.1N5352BG
HK$3.054
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. 805-0034
Mfr. Part No.1N4728ATR
HK$0.608
Each (In a Pack of 100)
units
Single 3.3V Through Hole 1 1 W DO-41 General Purpose 5% 2 76mA 10Ω 100µA 5.2mm -
RS Stock No. 800-8869
Mfr. Part No.1N5953BRLG
HK$2.08
Each (In a Pack of 50)
units
Single 150V Through Hole 1 3 W Case 59-10 Voltage Regulator 5% 2 2.5mA 600Ω 250nA - -
RS Stock No. 800-8793
Mfr. Part No.1N5384BRLG
HK$3.05
Each (In a Pack of 50)
units
Single 160V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 8mA 350Ω 500nA - -
RS Stock No. 103-3911
Mfr. Part No.1N5388BRLG
HK$1.04
Each (On a Reel of 4000)
units
Single 200V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 5mA 480Ω 500nA 8.89mm 3.68mm