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. 796-9937
Mfr. Part No.BZT52B10 RH
HK$0.638
Each (In a Pack of 250)
units
Single 10V Surface Mount 1 500 mW SOD-123F General Purpose 2% 2 5mA 20Ω - 2.7mm -
RS Stock No. 805-0047
Mfr. Part No.1N4733ATR
HK$0.621
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 2.72mm
RS Stock No. 792-5319
Mfr. Part No.1N5352BRLG
HK$3.002
Each (In a Pack of 20)
units
Single 15V Through Hole 1 5 W - Voltage Regulator 5% 2 75mA 2.5Ω 1µA 8.89mm 3.68mm
RS Stock No. 463-280
Mfr. Part No.1N5352BG
HK$2.581
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 -
RS Stock No. 805-0034
Mfr. Part No.1N4728ATR
HK$0.639
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 2.72mm
RS Stock No. 811-5894
Mfr. Part No.1N4761A-TR
BrandVishay
HK$0.552
Each (In a Pack of 200)
units
Single 75V Through Hole 1 1.3 W DO-41 General Purpose 5% 2 3.3A 175Ω 5µA 4.1mm 2.6mm
RS Stock No. 169-8628
Mfr. Part No.1N4728ATR
HK$0.248
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 2.72mm
RS Stock No. 100-7583
Mfr. Part No.1N5352BG
HK$1.133
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 -
RS Stock No. 811-6009
Mfr. Part No.1N5245B-TR
BrandVishay
HK$0.269
Each (In a Pack of 250)
units
Single 15V Through Hole 1 500 mW DO-35 General Purpose 5% 2 8.5mA 16Ω 100nA 3.9mm 1.7mm
RS Stock No. 145-2158
Mfr. Part No.1N4761A-TR
BrandVishay
HK$0.286
Each (On a Reel of 5000)
units
Single 75V Through Hole 1 1.3 W DO-41 General Purpose 5% 2 3.3A 175Ω 5µA 4.1mm 2.6mm
RS Stock No. 121-6442
Mfr. Part No.1N5352BRLG
HK$1.124
Each (On a Reel of 4000)
units
Single 15V Through Hole 1 5 W - Voltage Regulator 5% 2 75mA 2.5Ω 1µA 8.89mm 3.68mm
RS Stock No. 165-7081
Mfr. Part No.1N5245B-TR
BrandVishay
HK$0.205
Each (On a Reel of 10000)
units
Single 15V Through Hole 1 500 mW DO-35 General Purpose 5% 2 8.5mA 16Ω 100nA 3.9mm 1.7mm
RS Stock No. 544-4499
Mfr. Part No.BZX79-C18,113
BrandNexperia
HK$0.89
Each (In a Pack of 20)
units
Single 18V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 5mA 45Ω 50nA 4.25mm -
RS Stock No. 178-4832
Mfr. Part No.1N5388BG
HK$1.869
Each (In a Bag of 1000)
units
Single 200V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 5mA 480Ω 500nA 8.89mm 3.68mm
New
RS Stock No. 186-9414
Mfr. Part No.1N5384BG
HK$2.96
Each (In a Pack of 25)
units
Single 160V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 8mA 1650Ω 500nA - 3.68mm
RS Stock No. 805-7124
Mfr. Part No.SZMMSZ18T1G
HK$0.768
Each (In a Pack of 100)
units
Single 18V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 45Ω 50nA 2.84mm -
RS Stock No. 103-3911
Mfr. Part No.1N5388BRLG
HK$1.008
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 -
RS Stock No. 751-4562
Mfr. Part No.MMSZ5227B-7-F
HK$0.509
Each (On a Tape of 250)
units
Single 3.6V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 20mA 24Ω 15µA 2.85mm -
RS Stock No. 774-3325
Mfr. Part No.1N5388BG
HK$2.527
Each (In a Pack of 10)
units
Single 200V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 5mA 480Ω 500nA 8.89mm 3.68mm
RS Stock No. 800-8793
Mfr. Part No.1N5384BRLG
HK$2.736
Each (In a Pack of 50)
units
Single 160V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 8mA 350Ω 500nA - 3.68mm
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