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. 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. 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. 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. 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. 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. 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. 136-4791
Mfr. Part No.BZX79-C18,133
BrandNexperia
HK$0.17
Each (On a Tape of 10000)
units
Single 18V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 225 Ω @ 1 mA - 4.25mm -
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. 186-8779
Mfr. Part No.1N5384BG
HK$1.24
Each (In a Box of 1000)
units
Single 160V Through Hole 1 5 W CASE 017AA Voltage Regulator ±5% 2 8mA 1650Ω 500nA - -
RS Stock No. 145-5251
Mfr. Part No.SZMMSZ18T1G
HK$0.539
Each (On a Reel of 3000)
units
Single 18V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 45Ω 50nA 2.84mm 1.8mm
RS Stock No. 805-7124
Mfr. Part No.SZMMSZ18T1G
HK$0.924
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 1.8mm
RS Stock No. 136-4880
Mfr. Part No.BZX79-C18,133
BrandNexperia
HK$0.351
Each (In a Pack of 100)
units
Single 18V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 225 Ω @ 1 mA - 4.25mm -
RS Stock No. 163-1931
Mfr. Part No.1N5384BRLG
HK$1.06
Each (On a Reel of 4000)
units
Single 160V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 8mA 350Ω 500nA - -
RS Stock No. 178-4832
Mfr. Part No.1N5388BG
HK$1.24
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 -
RS Stock No. 812-8733
Mfr. Part No.BZX85B75-TR
BrandVishay
HK$1.13
Each (In a Pack of 200)
units
Single 75V Through Hole 1 1.3 W DO-41 General Purpose 2% 2 4mA 135Ω 500nA 4.1mm -
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
RS Stock No. 654-7527
Mfr. Part No.1N5388BRLG
HK$3.85
Each (In a Pack of 5)
units
Single 200V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 5mA 480Ω 500nA 8.89mm 3.68mm
RS Stock No. 145-2240
Mfr. Part No.BZX85B75-TR
BrandVishay
HK$0.513
Each (On a Reel of 5000)
units
Single 75V Through Hole 1 1.3 W DO-41 General Purpose 2% 2 4mA 135Ω 500nA 4.1mm -
RS Stock No. 163-1944
Mfr. Part No.1N5953BRLG
HK$0.706
Each (On a Reel of 6000)
units
Single 150V Through Hole 1 3 W Case 59-10 Voltage Regulator 5% 2 2.5mA 600Ω 250nA - -
RS Stock No. 751-4562
Mfr. Part No.MMSZ5227B-7-F
HK$0.528
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 1.7mm
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