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1N4728A Zener diode with 3.3V nominal voltage, 1W power dissipation, DO-41 through-hole package.
Mfr Part #:

1N4728A

Available from 6 distributors
Mfr Name: On Semiconductor
On Semiconductor
Zener diode with 3.3V nominal voltage, 1W power dissipation, DO-41 through-hole package.
Total Stock: 10,199 pcs

1N4728A Available from 6 distributors

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Non-Authorised

1N4728A 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
Operating Temperature Range
Package / Case
Power
Power Dissipation
Reverse Leakage Current
Supplier Device Package
Tape & Reel
Termination Style
Tolerance
Voltage
Zener Voltage

1N4728A Description

Short technical summary and product information.

The 1N4728A is a Zener diode from On Semiconductor with a nominal Zener voltage of 3.3V and tolerance of ±5%. It is rated for 1W continuous power dissipation, suitable for low-voltage regulation and reference circuits.

 

Electrical characteristics include a maximum impedance (Zzt) of 10 Ω and reverse leakage current of 100 µA at 1V reverse voltage. The device operates over a wide temperature range from -65°C to 200°C.

 

The 1N4728A is offered in a DO-204AL (DO-41) axial-lead through-hole package, compatible with standard PCB mounting and socket installations.

1N4728A Quick Information

Product Type: Zener Diode
Canonical Name: 1N4728A Zener Diode, 3.3V, 1W, DO-41, On Semiconductor
Subcategory: Single Zener Diode

1N4728A Compliance

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

1N4728A Features

  • Zener voltage of 3.3V with ±5% tolerance.
  • Power dissipation rating of 1W.
  • Through-hole DO-41 package for easy mounting.
  • Wide operating temperature range -65°C to 200°C.
  • Low impedance of 10Ω maximum.

1N4728A Applications

  • Ideal for voltage regulation in low-power circuits.
  • Used as a voltage reference in precision applications.
  • Suitable for overvoltage protection in DC circuits.
  • Applied in clamping circuits for signal conditioning.

1N4728A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N4728A?

3.3V with ±5% tolerance.

What is the power dissipation rating?

1W maximum.

What is the maximum impedance (Zzt)?

10 Ω.

What is the reverse leakage current?

100 µA at 1V reverse voltage.

What is the operating temperature range?

-65°C to 200°C.

What package does the 1N4728A come in?

DO-204AL (DO-41) axial-lead through-hole package.

Is the 1N4728A RoHS compliant?

Yes, RoHS3 compliant per existing data (unverified status).

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