Zener Diodes

Zener diodes are a type of semiconductor device that has different characteristics from a normal diode. Zener diodes allow current to flow from its anode to its cathode in either a forward or reverse direction, but only when exposed to enough voltage.

How does a Zener diode work?

Zener diodes are designed to change the direction of the 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 changes the direction of flow is called Zener Voltage or Breakdown Voltage. It could be defined for specific diodes anywhere from 1.8 to 200 V.

Types of Zener diodes

Zener diodes are offered in an array of different configurations such as different levels of power dissipation, mount types, and different configurations.

There are also different types of Zener diodes such as:

  • Avalanche
  • Bi-Directional
  • ESD Protection
  • General Purpose
  • Ultra-small

Typical applications 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. Zener diodes work reliably in the breakdown region, unlike normal diodes which would overheat. They are the most common and handiest solutions to a number of needs in a circuit design.

5596 Products showing for Zener Diodes

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In Stock
onsemi 1, 3.3 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 687-8250
  • Mfr. Part No. MMSZ4684T1G
Subtotal (25 units, in packs of 25)
PHP92.35(exc. VAT)
PHP3.694/unit
In Stock
Nexperia 1, 12 V Zener Diode, Single 500 mW 2 % Through Hole 2-Pin SOD-27
  • RS Stock No. 508-163
  • Mfr. Part No. BZX79-B12,113
Subtotal (100 units, in packs of 100)
PHP424.70(exc. VAT)
PHP4.247/unit
Last RS stock
onsemi 1, 150 V Zener Diode, Single 3 W 5 % Through Hole 2-Pin Case 017AA
  • RS Stock No. 800-8869
  • Mfr. Part No. 1N5953BRLG
Subtotal (50 units, in packs of 50)
PHP760.30(exc. VAT)
PHP15.206/unit
Temporarily out of stock
onsemi 1, 5.1 V Zener Diode, Single 1 W Through Hole 2-Pin DO-41
  • RS Stock No. 838-611
  • Mfr. Part No. 1N4733A
Subtotal (100 units, in bags of 100)
PHP450.90(exc. VAT)
PHP4.509/unit
Temporarily out of stock
ROHM 1, 13 V Zener Diode, Single 250 mW Surface 3-Pin SOT-23
  • RS Stock No. 222-4232
  • Mfr. Part No. BZX84C13VLYFHT116
Subtotal (3000 units, on reels of 3000)
PHP14,280.00(exc. VAT)
PHP4.76/unit
Temporarily out of stock
DiodesZetex 1, 12 V Zener Diode, Single 350 mW 5 % Surface 3-Pin SOT-23
  • RS Stock No. 146-0922
  • Mfr. Part No. MMBZ5242B-7-F
Subtotal (3000 units, on reels of 3000)
PHP4,560.00(exc. VAT)
PHP1.52/unit
Temporarily out of stock
onsemi 1, 5.6 V Zener Diode, Single 5 W 5 % Through Hole 2-Pin DO-15
  • RS Stock No. 103-3913
  • Mfr. Part No. 1N5339BRLG
Subtotal (4000 units, on reels of 4000)
PHP49,728.00(exc. VAT)
PHP12.432/unit
Limited stock
DiodesZetex 1, 3.3 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 822-2371P
  • Mfr. Part No. DDZ9684-7
Subtotal (200 units, supplied on a reel)
PHP700.00(exc. VAT)
PHP3.50/unit
Supply shortage
onsemi 1, 9.1 V Zener Diode, Single 1.5 W 5 % Surface 2-Pin SMA
  • RS Stock No. 162-9285
  • Mfr. Part No. 1SMA5924BT3G
Subtotal (5000 units, on reels of 5000)
PHP34,790.00(exc. VAT)
PHP6.958/unit
Supply shortage
onsemi 1, 5.6 V Zener Diode, Single 500 mW 5 % Surface 2-Pin DO-214AC
  • RS Stock No. 103-5050
  • Mfr. Part No. 1SMA5919BT3G
Subtotal (5000 units, on reels of 5000)
PHP34,540.00(exc. VAT)
PHP6.908/unit
Supply shortage
onsemi 1, 24 V Zener Diode, Single 3 W 5 % Surface 2-Pin DO-214AA
  • RS Stock No. 103-5052
  • Mfr. Part No. 1SMB5934BT3G
Subtotal (2500 units, on reels of 2500)
PHP14,895.00(exc. VAT)
PHP5.958/unit
In Stock
ROHM 1, 9.1 V Zener Diode, Single 150 mW Surface 2-Pin SOD-523
  • RS Stock No. 264-3731
  • Mfr. Part No. EDZVFHT2R9.1B
Subtotal (8000 units, on reels of 8000)
PHP19,840.00(exc. VAT)
PHP2.48/unit
Supply shortage
onsemi 1, 3.6 V Zener Diode, Single 1.5 W 5 % Surface 2-Pin DO-214AC
  • RS Stock No. 163-1949
  • Mfr. Part No. 1SMA5914BT3G
Subtotal (5000 units, on reels of 5000)
PHP34,790.00(exc. VAT)
PHP6.958/unit
In Stock
onsemi 1, 24 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 765-309
  • Mfr. Part No. MMSZ5252BT1G
Subtotal (200 units, on tapes of 200)
PHP506.20(exc. VAT)
PHP2.531/unit
In Stock
onsemi 1, 2.7 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 145-3878
  • Mfr. Part No. MMSZ2V7T1G
Subtotal (3000 units, on reels of 3000)
PHP6,447.00(exc. VAT)
PHP2.149/unit
In Stock
DiodesZetex 1, 5.2 V Zener Diode, Single 375 mW 7.7 % Surface 2-Pin SOD-123F
  • RS Stock No. 246-6689
  • Mfr. Part No. BZT52HC5V6WFQ-7
Subtotal (3000 units, on reels of 3000)
PHP15,048.00(exc. VAT)
PHP5.016/unit
In Stock
onsemi 1, 3.3 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 163-2516
  • Mfr. Part No. MMSZ4684T1G
Subtotal (3000 units, on reels of 3000)
PHP5,700.00(exc. VAT)
PHP1.90/unit
In Stock
onsemi 1, 6.2 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 163-2518
  • Mfr. Part No. MMSZ4691T1G
Subtotal (3000 units, on reels of 3000)
PHP6,762.00(exc. VAT)
PHP2.254/unit
In Stock
onsemi 1, 15 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 802-1901
  • Mfr. Part No. MMSZ5245ET1G
Subtotal (100 units, on tapes of 100)
PHP410.90(exc. VAT)
PHP4.109/unit
In Stock
onsemi 1, 15 V Zener Diode, Single 500 mW 5 % Surface 2-Pin SOD-123
  • RS Stock No. 178-7576
  • Mfr. Part No. MMSZ15T1G
Subtotal (3000 units, on reels of 3000)
PHP5,370.00(exc. VAT)
PHP1.79/unit
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