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. 770-3377
Mfr. Part No.1SMB5924B-13
HK$2.76
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. 122-0264
Mfr. Part No.MMSZ5227B-7-F
HK$0.274
Each (On a Reel of 3000)
units
Single 3.6V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 20mA 24Ω 15µA 2.85mm 1.7mm
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
RS Stock No. 751-3711
Mfr. Part No.BZT52C2V0-7-F
HK$0.488
Each (On a Tape of 250)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 100Ω 150µA 2.85mm 1.7mm
RS Stock No. 121-9532
Mfr. Part No.BZT52C2V0-7-F
HK$0.257
Each (On a Reel of 3000)
units
Single 2V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 100Ω 150µA 2.85mm 1.7mm
RS Stock No. 751-5032
Mfr. Part No.SMAZ18-13-F
HK$2.40
Each (In a Pack of 50)
units
Single 18V Surface Mount 1 1 W SMA Voltage Regulator 5% 2 25mA 15Ω 500nA 4.6mm 2.92mm
RS Stock No. 770-5014
Mfr. Part No.DDZ6V8BSF-7
HK$0.488
Each (In a Pack of 100)
units
Single 6.7V Surface Mount 1 500 mW SOD-323F Voltage Regulator 2.5% 2 20mA 30Ω 7.5µA 1.8mm 1.35mm
RS Stock No. 822-2188
Mfr. Part No.BZT52C10T-7
HK$0.564
Each (In a Pack of 100)
units
Single 10V Surface Mount 1 300 mW SOD-523 General Purpose 5% 2 5mA 20Ω 200nA 1.3mm 0.9mm
RS Stock No. 169-7179
Mfr. Part No.BZX84B3V0-7-F
HK$0.248
Each (On a Reel of 3000)
units
Single 3V Surface Mount 1 350 mW SOT-23 Voltage Regulator 2% 3 5mA 95Ω 10µA 3mm 1.4mm
RS Stock No. 122-1229
Mfr. Part No.SMAZ6V2-13-F
HK$0.839
Each (On a Reel of 5000)
units
Single 6.2V Surface Mount 1 1 W SMA Voltage Regulator 5% 2 100mA 5µA 4.6mm 2.92mm
RS Stock No. 122-1230
Mfr. Part No.SMAZ5V6-13-F
HK$0.839
Each (On a Reel of 5000)
units
Single 5.6V Surface Mount 1 1 W SMA Voltage Regulator 5% 2 100mA 5µA 4.6mm 2.92mm
RS Stock No. 922-8468
Mfr. Part No.SMAZ18-13-F
HK$0.839
Each (On a Reel of 5000)
units
Single 18V Surface Mount 1 1 W SMA Voltage Regulator 5% 2 25mA 15Ω 500nA 4.6mm 2.92mm
RS Stock No. 738-5055
Mfr. Part No.MMSZ5232B-7-F
HK$0.578
Each (On a Tape of 200)
units
Single 5.6V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 20mA 11Ω 5µA 2.85mm 1.7mm
RS Stock No. 738-4995
Mfr. Part No.BZX84C6V8-7-F
HK$0.564
Each (On a Tape of 200)
units
Single 6.8V Surface Mount 1 350 mW SOT-23 Voltage Regulator 6% 3 5mA 80Ω 2µA 3mm 1.4mm
RS Stock No. 166-0424
Mfr. Part No.BZT52C3V9S-7-F
HK$0.342
Each (On a Reel of 3000)
units
Single 3.9V Surface Mount 1 200 mW SOD-323 Voltage Regulator 5% 2 5mA 90Ω 3µA 1.8mm 1.4mm
RS Stock No. 885-5460
Mfr. Part No.DDZ15BSF-7
HK$0.488
Each (In a Pack of 100)
units
Single 14.3V Surface Mount 1 500 mW SOD-323F Precision 3% 2 10mA 40Ω 70nA 1.8mm 1.35mm
RS Stock No. 751-3761
Mfr. Part No.BZT52C3V9S-7-F
HK$0.642
Each (On a Tape of 100)
units
Single 3.9V Surface Mount 1 200 mW SOD-323 Voltage Regulator 5% 2 5mA 90Ω 3µA 1.8mm 1.4mm
RS Stock No. 122-2850
Mfr. Part No.BZT52C10T-7
HK$0.282
Each (On a Reel of 3000)
units
Single 10V Surface Mount 1 300 mW SOD-523 General Purpose 5% 2 5mA 20Ω 200nA 1.3mm 0.9mm
RS Stock No. 122-2343
Mfr. Part No.BZX84C3V9-7-F
HK$0.282
Each (On a Reel of 3000)
units
Single 3.9V Surface Mount 1 350 mW SOT-23 General Purpose 5% 3 5mA 90Ω 3µA 3mm 1.4mm