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1N4738A 1N4738A is a 8.2V 1W Zener diode from On Semiconductor in a DO-41 through-hole package with ±5% tolerance.
Mfr Part #:

1N4738A

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
1N4738A is a 8.2V 1W Zener diode from On Semiconductor in a DO-41 through-hole package with ±5% tolerance.
Total Stock: 6,500 pcs

1N4738A Available from 1 distributors

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1N4738A Specifications Quick View

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

1N4738A Description

Short technical summary and product information.

The 1N4738A is a single Zener diode from On Semiconductor designed for voltage regulation applications. It provides a nominal Zener voltage of 8.2V with a tolerance of ±5%, ensuring precise voltage clamping. The device is rated for a power dissipation of 1W, making it suitable for low to moderate power regulation tasks in a variety of circuits. The Zener impedance (Zzt) is 4.5Ω, contributing to stable voltage regulation under varying current conditions.

 

This Zener diode is packaged in a DO-204AL (DO-41) axial leaded package, which supports through-hole mounting on printed circuit boards. It offers a wide operating temperature range from -65°C to 200°C, enabling reliable performance in extreme environments. The reverse leakage current is specified at 10µA at 6V, indicating low leakage under reverse bias conditions.

 

Typical applications include voltage clamping, overvoltage protection, and reference voltage generation in power supplies and analog circuits. The DO-41 package provides robust mechanical strength and ease of handling in both prototyping and production environments. The 1N4738A is a standard part in the popular 1N47xxA Zener series, offering a well-documented and widely available solution for voltage regulation needs.

1N4738A Quick Information

Product Type: Zener Diode
Series: 1N47xxA
Canonical Name: 1N4738A On Semiconductor Zener Diode 8.2V 1W ±5% DO-41
Subcategory: Single Zener Diode

1N4738A Compliance

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

1N4738A Features

  • Nominal Zener voltage of 8.2V.
  • Power dissipation rating of 1W.
  • ±5% Zener voltage tolerance.
  • Through-hole DO-41 axial package.
  • Wide operating temperature range -65°C to 200°C.

1N4738A Applications

  • Voltage regulation in power supplies.
  • Overvoltage protection circuits.
  • Voltage reference generation.
  • Clamping in analog and digital circuits.

1N4738A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N4738A?

The Zener voltage is 8.2V with a tolerance of ±5%.

What is the power dissipation rating?

The power dissipation is 1W.

What package does this diode come in?

It comes in a DO-204AL, DO-41, Axial through-hole package. The supplier device package is DO-41.

What is the operating temperature range?

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

What is the Zener impedance?

The Zener impedance (Zzt) is 4.5Ω.

What is the reverse leakage current?

The reverse leakage current is 10µA at 6V.

How is this component mounted?

It is mounted using through-hole technology.

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