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1N4743A Zener diode with 13V nominal voltage, 1W power dissipation, ±5% tolerance, in DO-41 axial leaded package.
Mfr Part #:

1N4743A

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
Zener diode with 13V nominal voltage, 1W power dissipation, ±5% tolerance, in DO-41 axial leaded package.
Total Stock: 60,000 pcs

1N4743A Available from 1 distributors

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1N4743A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Impedance (Max) (Zzt)
Impedance (Zzt)
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
Power Dissipation
Reverse Leakage Current
Supplier Device Package
Tape & Reel
Tolerance
Voltage
Zener Voltage

1N4743A Description

Short technical summary and product information.

The 1N4743A is a 13V Zener diode from On Semiconductor designed for voltage regulation and protection applications. It offers a nominal zener voltage of 13V with a tolerance of ±5%, ensuring consistent performance within specified limits. The device can dissipate up to 1W of power, making it suitable for moderate power regulation tasks.

 

This Zener diode features a maximum impedance (Zzt) of 10Ω at the test current, providing stable voltage clamping. The reverse leakage current is specified at 5µA at 9.9V, indicating low leakage under reverse bias conditions. The operating temperature range spans from -65°C to 200°C, allowing use in harsh thermal environments.

 

The 1N4743A is housed in a DO-204AL (DO-41) axial leaded package, designed for through-hole mounting. This package is widely used and compatible with standard PCB layouts and breadboard prototyping. The device is RoHS3 compliant and REACH unaffected, though these compliance statuses are unverified.

1N4743A Quick Information

Product Type: Zener Diode
Canonical Name: 1N4743A Zener Diode 13V 1W ±5% DO-41
Subcategory: Single Zener Diode

1N4743A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

1N4743A Features

  • 13V nominal zener voltage with ±5% tolerance.
  • 1W power dissipation capability.
  • 10Ω maximum impedance (Zzt).
  • 5µA reverse leakage current at 9.9V.
  • -65°C to 200°C operating temperature range.

1N4743A Applications

  • Voltage regulation in power supply circuits.
  • Overvoltage protection for sensitive components.
  • Voltage reference in analog circuits.
  • Clamping in low-power DC applications.

1N4743A FAQs

6 frequently asked questions generated from this part’s specifications.
What is the zener voltage of the 1N4743A?

The nominal zener voltage is 13V with a tolerance of ±5%.

What is the power dissipation rating?

The power dissipation is 1W.

What package does the 1N4743A come in?

It is available in a DO-204AL (DO-41) axial leaded through-hole package.

What is the operating temperature range?

The operating temperature range is -65°C to 200°C.

What is the reverse leakage current?

The reverse leakage current is 5µA at 9.9V.

What is the maximum impedance (Zzt)?

The maximum impedance (Zzt) is 10Ω.

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