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. 802-1816
Mfr. Part No.MMSZ24T1G
SGD0.106
Each (On a Tape of 200)
units
Single 24V Surface Mount 1 500 mW SOD-123 Voltage Regulator 5% 2 5mA 70Ω 50nA 2.84mm 1.8mm
RS Stock No. 177-9911
Mfr. Part No.PDZVTR33A
BrandROHM
SGD0.152
Each (On a Reel of 3000)
units
Single 33V Surface Mount 1 - SOD-128 Voltage Regulator - 2 10mA - 10µA 2.7mm 3.9mm
RS Stock No. 145-3699
Mfr. Part No.SZMMSZ4705T1G
SGD0.075
Each (On a Reel of 3000)
units
Single 18V Surface Mount 1 500 mW SOD-123 Voltage Regulator - 2 0.05mA - 50nA 2.84mm 1.8mm
RS Stock No. 509-914
Mfr. Part No.BZX79-C62,113
BrandNexperia
SGD0.06
Each (In a Pack of 100)
units
Single 62V Through Hole 1 500 mW DO-35 Voltage Regulator 5% 2 2mA 215Ω 50nA 4.25mm 1.85mm
RS Stock No. 153-2943
Mfr. Part No.BZX884-B8V2,315
BrandNexperia
SGD0.19
Each (In a Pack of 100)
units
Single 8.2V Surface Mount 1 250 (Total Power Dissipation) mW, 40 (Non-Repetitive Peak Reverse Power Dissipation) W DFN1006, SOD-882 Voltage Regulator ±2% 2 5mA - 700nA 1.02mm 0.62mm
RS Stock No. 891-2724
Mfr. Part No.CRZ15(TE85L,Q,M)
BrandToshiba
SGD0.632
Each (In a Pack of 25)
units
Single 15V Surface Mount 1 700 mW S-FLAT Transient Suppressor - 2 10mA 30Ω 10µA 2.6mm 1.6mm
RS Stock No. 145-2098
Mfr. Part No.BZX84C9V1-E3-08
BrandVishay
SGD0.059
Each (On a Reel of 3000)
units
Single 9.1V Surface Mount 1 300 mW SOT-23 General Purpose ±5% 3 1 mA, 5 mA 15Ω 500nA 3.1mm 1.43mm
RS Stock No. 792-0964
Mfr. Part No.BZX384-B5V1,115
BrandNexperia
SGD0.297
Each (On a Reel of 10)
units
Single 5.1V Surface Mount 1 300 mW SOD-323 Voltage Regulator 2% 2 5mA 60Ω 2µA 1.8mm 1.35mm
RS Stock No. 151-2637
Mfr. Part No.BZX585-C33,115
BrandNexperia
SGD0.089
Each (On a Reel of 3000)
units
Single 33V Surface Mount 1 300 (Total Power Dissipation) mW, 40 (Peak Reverse Power Dissipation) W SOD-523 Voltage Regulator ±5% 2 5mA - - 1.25mm 0.85mm
RS Stock No. 133-2977
Mfr. Part No.EDZVT2R20B
BrandROHM
SGD0.109
Each (In a Pack of 200)
units
Single 20V Surface Mount 1 150 mW SOD-523 Voltage Regulator - 2 - 100Ω 100nA 1.25mm 0.85mm
RS Stock No. 165-2965
Mfr. Part No.TZMC3V3-GS08
BrandVishay
SGD0.053
Each (On a Reel of 2500)
units
Single 3.3V Surface Mount 1 500 mW MiniMELF Voltage Regulator 5% 2 5mA 90Ω 2µA 3.7mm 1.6mm
RS Stock No. 145-2803
Mfr. Part No.BZX84C7V5LT1G
SGD0.03
Each (On a Reel of 3000)
units
Single 7.5V Surface Mount 1 300 mW SOT-23 Voltage Regulator 6% 3 5mA 15Ω 1µA 2.9mm 1.3mm
RS Stock No. 903-0801
Mfr. Part No.MMBZ4617-E3-08
BrandVishay
SGD0.124
Each (On a Reel of 250)
units
Single 2.4V Surface Mount 1 350 mW SOT-23 General Purpose ±5% 3 0.25mA 1400Ω 2µA 3.1mm 1.43mm
RS Stock No. 781-5449
Mfr. Part No.SZBZX84C7V5LT3G
SGD0.268
Each (On a Tape of 50)
units
Single 7.5V Surface Mount 1 225 mW SOT-23 Voltage Regulator 6% 3 5mA 15Ω 1µA 3.04mm 1.4mm
RS Stock No. 816-6713
Mfr. Part No.PDZ3.9B,115
BrandNexperia
SGD0.094
Each (In a Pack of 200)
units
Single 3.9V Surface Mount 1 400 mW SOD-323 Voltage Regulator 2% 2 5mA - 3µA 1.8mm 1.35mm
RS Stock No. 822-2438
Mfr. Part No.DDZ9702T-7
SGD0.187
Each (In a Pack of 100)
units
Single 15V Surface Mount 1 150 mW SOD-523 General Purpose 5% 2 0.05mA - 50nA 1.3mm 0.90mm
RS Stock No. 170-3411
Mfr. Part No.BZX84C5V6LT1G
SGD0.03
Each (On a Reel of 3000)
units
Single 5.6V Surface Mount 1 300 mW SOT-23 Voltage Regulator 7% 3 5mA 40Ω 1µA 2.9mm 1.3mm
RS Stock No. 812-8670
Mfr. Part No.BZX85B20-TR
BrandVishay
SGD0.194
Each (In a Pack of 200)
units
Single 20V Through Hole 1 1.3 W DO-41 General Purpose 2% 2 10mA 24Ω 500nA 4.1mm -
RS Stock No. 151-2609
Mfr. Part No.BZX84J-C39,115
BrandNexperia
SGD0.086
Each (On a Reel of 3000)
units
Single 39V Surface Mount 1 40 (Peak Reverse Power Dissipation) W, 550 (Total Power Dissipation) mW SC-90, SOD-323F General Purpose ±5% 2 5mA - - 1.8mm 1.35mm
RS Stock No. 805-0214
Mfr. Part No.1N5250BTR
SGD0.072
Each (In a Pack of 200)
units
Single 20V Through Hole 1 500 mW DO-35 General Purpose 5% 2 6.2mA 25Ω 100nA 4.56mm -
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