1N4746A Zener diode rated at 18V with 1W power dissipation. ±5% tolerance and 20Ω impedance in a DO-204AL (DO-41) axial lead package.
Mfr Part #:

1N4746A

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
Zener diode rated at 18V with 1W power dissipation. ±5% tolerance and 20Ω impedance in a DO-204AL (DO-41) axial lead package.
Total Stock: 8 pcs

1N4746A Available from 1 distributor

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8 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request On Request

1N4746A Specifications Quick View

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

1N4746A Description

Short technical summary and product information.

The 1N4746A is a Zener diode from Microchip Technology designed for voltage regulation and protection applications. It features a nominal Zener voltage of 18V with a tolerance of ±5%, ensuring reliable voltage clamping. The diode can dissipate up to 1W of power, making it suitable for low to moderate power circuits.

 

Electrical characteristics include a maximum impedance (Zzt) of 20Ω and a reverse leakage current of 5µA at 13.7V. The device operates over a wide temperature range from -65°C to 200°C, providing robust performance in harsh environments.

 

The 1N4746A is housed in a DO-204AL (DO-41) axial lead package, which is designed for through-hole mounting. This package offers excellent thermal performance and is compatible with standard PCB assembly processes.

1N4746A Quick Information

Product Type: Zener Diode
Canonical Name: Zener Diode 18V 1W DO-204AL (DO-41) Through Hole
Subcategory: Single Zener Diode

1N4746A Compliance

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

1N4746A Features

  • 18V nominal Zener voltage.
  • 1W power dissipation rating.
  • ±5% tolerance for precision.
  • Wide temperature range -65°C to 200°C.
  • DO-204AL (DO-41) through-hole package.

1N4746A Applications

  • Used in voltage regulation circuits.
  • Ideal for overvoltage protection.
  • Suitable for voltage reference applications.
  • Common in power supply designs.

1N4746A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N4746A?

18V.

What is the power rating of the 1N4746A?

1W.

What is the tolerance of the 1N4746A?

±5%.

What is the package type of the 1N4746A?

DO-204AL (DO-41) axial lead.

What is the operating temperature range of the 1N4746A?

-65°C to 200°C.

What is the reverse leakage current of the 1N4746A?

5µA at 13.7V.

What is the impedance of the 1N4746A?

20Ω.

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