Voltage-Regulating Diodes
Power sections of a circuit with a specific voltage. Also known as Zener diodes, these diodes are often used as a reference point in amplifiers and other voltage-sensitive circuits. When installed in reverse, they won’t conduct current until the reverse breakdown voltage is reached. After that point, they maintain the same voltage.
Reverse breakdown voltage is the voltage at which a reversed current will break through the diodes’ internal electrical barrier and flow backward.
Forward voltage drop is the amount of voltage used up while current flows across diodes.
For technical drawings and 3-D models, click on a part number.
Trade | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. Voltage  | Reverse Breakdown Voltage | Forward Voltage Drop | Max. Current | Power Dissipation, W | Size | Number | Wire Dia. | Temp. Range, °F | Pkg. Qty. | Pkg. | |
| 3.3V DC | 1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4728A | 0.034" | -85° to 390° | 25 | 0000000 | 00000 |
| 3.6V DC | 1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4729A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 3.9V DC | 1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4730A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 4.3V DC | 1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4731A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 4.7V DC | 1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4732A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 5.1V DC | 1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4733A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 5.6V DC | 2V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4734A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 6.2V DC | 3V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4735A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 6.8V DC | 4V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4736A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 7.5V DC | 5V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4737A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 8.2V DC | 6V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4738A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 9.1V DC | 7V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4739A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 10V DC | 7.6V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4740A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 11V DC | 8.4V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4741A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 12V DC | 9.1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4742A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 13V DC | 9.9V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4743A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 15V DC | 11.4V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4744A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 16V DC | 12.2V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4745A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 18V DC | 13.7V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4746A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 20V DC | 15.2V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4747A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 22V DC | 16.7V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4748A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 24V DC | 18.2V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4749A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 27V DC | 20.6V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4750A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 30V DC | 22.8V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4751A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 33V DC | 25.1V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4752A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 36V DC | 27.4V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4753A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 39V DC | 29.7V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4754A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 43V DC | 32.7V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4755A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
| 47V DC | 35.8V DC | 1.2V DC | 0.2A | 1 | DO-41G | 1N4756A | 0.034" | -85° to 390° | 25 | 0000000 | 0000 |
Diode Assortments
Control voltage and current in circuits with a variety of diodes.
Standard diodes keep the current in a circuit flowing in one direction. Use them to manipulate signals or to protect your circuit from reverse currents, such as those created when a motor stops or slows down.
Schottky diodes have faster switching speeds than other diodes, so they’re used to channel current in a single direction in circuits that switch frequently. They’re often found in radios and data processors.
Zener diodes regulate voltage in a circuit. When installed in reverse, they won’t conduct current until a set voltage is reached. After that point, they maintain the same voltage. Because they provide a stable voltage, they are often used as a reference point in amplifiers and other voltage-sensitive circuits.
| Max. Voltage | No. of Pieces | Includes | Temp. Range, °F | Each | |
| 3.3V DC-1,000V DC | 390 | 1N4001—50V DC Standard DO-41 Diode (10 Pieces) 1N5401—100V DC Standard DO-27 Diode (10 Pieces) 1N4148—100V DC Standard DO-35 Diode (10 Pieces) 1N5404—400V DC Standard DO-27 Diode (10 Pieces) 1N4004—400V DC Standard DO-41 Diode (10 Pieces) 1N5408—1,000V DC Standard DO-27 Diode (10 Pieces) 1N4007—1,000V DC Standard DO-41 Diode (10 Pieces) 1N5817—20V DC Schottky DO-41 Diode (10 Pieces) 1N5819—40V DC Schottky DO-41 Diode (10 Pieces) 1N5822—40V DC Schottky DO-27 Diode (10 Pieces) 1N4728A—3.3V DC Zener DO-41G Diode (10 Pieces) 1N4729A—3.6V DC Zener DO-41G Diode (10 Pieces) 1N4730A—3.9V DC Zener DO-41G Diode (10 Pieces) 1N4731A—4.3V DC Zener DO-41G Diode (10 Pieces) 1N4732A—4.7V DC Zener DO-41G Diode (10 Pieces) 1N4733A—5.1V DC Zener DO-41G Diode (10 Pieces) 1N4734A—5.6V DC Zener DO-41G Diode (10 Pieces) 1N4735A—6.2V DC Zener DO-41G Diode (10 Pieces) 1N4736A—6.8V DC Zener DO-41G Diode (10 Pieces) 1N4737A—7.5V DC Zener DO-41G Diode (10 Pieces) 1N4738A—8.2V DC Zener DO-41G Diode (10 Pieces) 1N4739A—9.1V DC Zener DO-41G Diode (10 Pieces) 1N4740A—10V DC Zener DO-41G Diode (10 Pieces) 1N4741A—11V DC Zener DO-41G Diode (10 Pieces) 1N4742A—12V DC Zener DO-41G Diode (10 Pieces) 1N4743A—13V DC Zener DO-41G Diode (10 Pieces) 1N4744A—15V DC Zener DO-41G Diode (10 Pieces) 1N4745A—16V DC Zener DO-41G Diode (10 Pieces) 1N4746A—18V DC Zener DO-41G Diode (10 Pieces) 1N4747A—20V DC Zener DO-41G Diode (10 Pieces) 1N4748A—22V DC Zener DO-41G Diode (10 Pieces) 1N4749A—24V DC Zener DO-41G Diode (10 Pieces) 1N4750A—27V DC Zener DO-41G Diode (10 Pieces) 1N4751A—30V DC Zener DO-41G Diode (10 Pieces) 1N4752A—33V DC Zener DO-41G Diode (10 Pieces) 1N4753A—36V DC Zener DO-41G Diode (10 Pieces) 1N4754A—39V DC Zener DO-41G Diode (10 Pieces) 1N4755A—43V DC Zener DO-41G Diode (10 Pieces) 1N4756A—47V DC Zener DO-41G Diode (10 Pieces) | -55° to 255° | 0000000 | 000000 |
Circuit Board Voltage Regulators
Safely power low-voltage components in circuits with a high-voltage source. These regulators turn high-voltage inputs into lower, more stable outputs.
Regulators with an adjustable output voltage let you fine-tune the output to best fit your circuit. To adjust the output voltage, connect them to two resistors (not included). The resistance values determine your output voltage.
Dropout voltage is the minimum required difference between the input voltage and your regulator’s output voltage.
For technical drawings and 3-D models, click on a part number.
Input Voltage | Terminal | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Output Voltage | Min. | Max. | Dropout Voltage | Max. Current | Trade Size | Trade Number | No. of | Lg. | Material | For Hole Ctr.-to-Ctr. | Ht. | Wd. | Dp. | Pkg. Qty. | Pkg. | |
Fixed Output Voltage | ||||||||||||||||
Positive | ||||||||||||||||
| 5V DC | 8V DC | 35V DC | 2V DC | 1.5A | TO-220 | L7805 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 00000 |
| 6V DC | 11V DC | 35V DC | 2V DC | 1.5A | TO-220 | L7806 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| 8V DC | 14V DC | 35V DC | 2V DC | 1.5A | TO-220 | L7808 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| 9V DC | 15V DC | 35V DC | 2V DC | 1.5A | TO-220 | L7809 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| 12V DC | 16V DC | 35V DC | 2V DC | 1.5A | TO-220 | L7812 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| 15V DC | 19V DC | 35V DC | 2V DC | 1.5A | TO-220 | L7815 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| 24V DC | 28V DC | 35V DC | 2V DC | 1.5A | TO-220 | L7824 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
Negative | ||||||||||||||||
| -15V DC | -19V DC | -35V DC | 2V DC | 1.5A | TO-220 | L7915 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| -12V DC | -16V DC | -35V DC | 1.1V DC | 1.5A | TO-220 | L7912 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| -9V DC | -15V DC | -35V DC | 2V DC | 1.5A | TO-220 | L7909 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| -8V DC | -14V DC | -35V DC | 2V DC | 1.5A | TO-220 | L7908 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| -6V DC | -11V DC | -35V DC | 2V DC | 1.5A | TO-220 | L7906 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
| -5V DC | -8V DC | -35V DC | 1.1V DC | 1.5A | TO-220 | L7905 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
Adjustable Output Voltage | ||||||||||||||||
Positive | ||||||||||||||||
| 1.25V DC to 37V DC | 4.25V DC | 40V DC | 1.25V DC | 1.5A | TO-220 | LM317 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 5 | 0000000 | 0000 |
Terminal | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. of Pieces | Includes | Max. Current | Trade Size | No. of | Lg. | Material | For Hole Ctr.-to-Ctr. | Ht. | Wd. | Dp. | Each | |
| 70 | L7805 Positive Regulators for 5V DC Output (5 Pieces) L7806 Positive Regulators for 6V DC Output (5 Pieces) L7808 Positive Regulators for 8V DC Output (5 Pieces) L7809 Positive Regulators for 9V DC Output (5 Pieces) L7812 Positive Regulators for 12V DC Output (5 Pieces) L7815 Positive Regulators for 15V DC Output (5 Pieces) L7824 Positive Regulators for 24V DC Output (5 Pieces) L7905 Negative Regulators for -5V DC Output (5 Pieces) L7906 Negative Regulators for -6V DC Output (5 Pieces) L7908 Negative Regulators for -8V DC Output (5 Pieces) L7909 Negative Regulators for -9V DC Output (5 Pieces) L7912 Negative Regulators for -12V DC Output (5 Pieces) L7915 Negative Regulators for -15V DC Output (5 Pieces) LM317 Adjustable Positive Regulators for 1.25 to 37V DC Output (5 Pieces) | 1.5A | TO-220 | 3 | 9/16" | Tin-Plated Copper | 0.1" | 5/8" | 13/32" | 3/16" | 0000000 | 000000 |
Logic Level Converters for Development Boards
Communicate between a development board and other components, such as sensors and actuators, that use digital signals at a different voltage. Connect your high-voltage power source and devices to one side and your low-voltage power source and devices to the other. These converters have four independent communication channels, each of which connects high-voltage devices to low-voltage devices. All channels are bidirectional, converting voltage from high to low and low to high, so they support protocols such as I2C that send data in both directions on a single wire. They’re often used between a 5V DC device and a 3.3V DC device, but will work with any voltages within the listed range. For fast prototyping, solder on headers and plug them directly into a breadboard. For a permanent connection, solder on wires.
Input/Output | |||||||
|---|---|---|---|---|---|---|---|
| Voltage | Type | No. of Channels | Lg. | Wd. | Hole Center-to-Center | Each | |
Bidirectional | |||||||
| 0.8V DC-5V DC | Digital | 4 | 5/8" | 9/16" | 0.1" | 0000000 | 00000 |