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. 178-4832
Mfr. Part No.1N5388BG
PHP7.418
Each (In a Bag of 1000)
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Single 200V Through Hole 1 5 W Surmetic 40 Voltage Regulator 5% 2 5mA 480Ω 500nA 8.89mm 3.68mm
RS Stock No. 100-7582
Mfr. Part No.1N5349BG
PHP6.862
Each (In a Box of 1000)
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Single 12V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 2µA 8.89mm -
RS Stock No. 188-028
Mfr. Part No.RD7.5FM-AZ
PHP15.296
Each (In a Pack of 25)
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Single 7.5V Surface Mount 1 1 W Power Mini-Mold - 6% 2 5mA 25Ω 20µA 4.3mm -
RS Stock No. 103-3903
Mfr. Part No.1N5349BRLG
PHP6.205
Each (On a Reel of 4000)
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Single 12V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 100mA 2.5Ω 2µA 8.89mm -
RS Stock No. 811-5945
Mfr. Part No.1N5225B-TR
BrandVishay
PHP1.713
Each (In a Pack of 250)
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Single 3V Through Hole 1 500 mW DO-35 General Purpose 5% 2 20mA 29Ω 50µA 3.9mm 1.7mm
RS Stock No. 103-2969
Mfr. Part No.MMSZ5231BT1G
PHP1.711
Each (On a Reel of 3000)
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Single 5.1V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 20mA 17Ω 5µA 2.69mm -
RS Stock No. 136-4860
Mfr. Part No.BZX79-C3V0,133
BrandNexperia
PHP2.15
Each (In a Pack of 100)
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Single 3V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 600 Ω @ 1 mA - 4.25mm 1.85mm
RS Stock No. 102-2267
Mfr. Part No.1N5355BG
PHP7.068
Each (In a Box of 1000)
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Single 18V Through Hole 1 5 W DO-15 Voltage Regulator 5% 2 65mA 2.5Ω 500nA 8.89mm -
RS Stock No. 165-8607
Mfr. Part No.MMBZ5248B-7-F
PHP1.134
Each (On a Reel of 3000)
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Single 18V Surface Mount 1 350 mW SOT-23 General Purpose 5% 3 7mA 21Ω 100nA 3mm -
RS Stock No. 885-5530
Mfr. Part No.MMSZ5245BS-7-F
PHP2.382
Each (In a Pack of 100)
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Single 15V Surface Mount 1 200 mW SOD-323 General Purpose 5% 2 9.5mA 600Ω 100nA 1.8mm -
RS Stock No. 463-278
Mfr. Part No.1N5349BG
PHP8.077
Each (In a Pack of 10)
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Single 12V Through Hole 1 5 W 017AA-01 Voltage Regulator ±5% 2 100mA 2.5Ω 2µA 8.89mm -
RS Stock No. 170-8988
Mfr. Part No.MMSZ5245BS-7-F
PHP1.728
Each (On a Reel of 3000)
units
Single 15V Surface Mount 1 200 mW SOD-323 General Purpose 5% 2 9.5mA 600Ω 100nA 1.8mm -
RS Stock No. 823-3110
Mfr. Part No.MMBZ5248B-7-F
PHP1.665
Each (In a Pack of 200)
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Single 18V Surface Mount 1 350 mW SOT-23 General Purpose 5% 3 7mA 21Ω 100nA 3mm -
RS Stock No. 751-3736
Mfr. Part No.BZT52C3V0T-7
PHP3.36
Each (In a Pack of 100)
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Single 3V Surface Mount 1 300 mW SOD-523 Voltage Regulator 7% 2 5mA 95Ω 10µA 1.3mm -
RS Stock No. 159-6617
Mfr. Part No.1N5264B-TR
BrandVishay
PHP1.088
Each (On a Reel of 10000)
units
Single 60V Through Hole 1 500 mW DO-35 General Purpose ±5% 2 2.1mA 170Ω 100 nA @ 46 V 3.9mm 1.7mm
RS Stock No. 508-113
Mfr. Part No.BZX384-C3V0,115
BrandNexperia
PHP1.618
Each (In a Pack of 200)
units
Single 3V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 5mA 95Ω 10µA 1.8mm -
RS Stock No. 438-2671
Mfr. Part No.BZX84-C8V2,215
BrandNexperia
PHP0.744
Each (On a Reel of 3000)
units
Single 8.2V Surface Mount 1 250 mW SOT-23 Voltage Regulator 5% 3 5mA 15Ω 700nA 3mm -
RS Stock No. 136-4799
Mfr. Part No.BZX79-C3V0,133
BrandNexperia
PHP0.945
Each (On a Tape of 10000)
units
Single 3V Through Hole 1 500 mW SOD27 (DO-35) Voltage Regulator ±2 %, ±5 % 2 5mA 600 Ω @ 1 mA - 4.25mm 1.85mm
RS Stock No. 438-1606
Mfr. Part No.BZV55-C3V3,115
BrandNexperia
PHP1.133
Each (On a Reel of 2500)
units
Single 3.3V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 5mA 95Ω 5µA 3.7mm -
RS Stock No. 178-7085
Mfr. Part No.BZX384-C3V0,115
BrandNexperia
PHP1.224
Each (On a Reel of 3000)
units
Single 3V Surface Mount 1 300 mW UMD Voltage Regulator 5% 2 5mA 95Ω 10µA 1.8mm -
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