1N4728ATR 1N4728ATR is a 3.3V Zener diode rated for 1W power dissipation in a DO-204AL (DO-41) through-hole package.
Mfr Part #:

1N4728ATR

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
1N4728ATR is a 3.3V Zener diode rated for 1W power dissipation in a DO-204AL (DO-41) through-hole package.
Total Stock: 5,900 pcs

1N4728ATR Available from 2 distributors

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Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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3,000 pcs
3000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
2,900 pcs
2900 pcs On Request 1 On Request On Request On Request On Request On Request

1N4728ATR Specifications Quick View

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

1N4728ATR Description

Short technical summary and product information.

The 1N4728ATR from On Semiconductor is a single Zener diode designed for voltage regulation and clamping applications. It offers a nominal Zener voltage of 3.3V with a tolerance of ±5%, making it suitable for low-voltage reference and protection circuits.

 

This device is rated for a continuous power dissipation of 1W, allowing it to handle moderate power levels in through-hole designs. The Zener impedance (Zzt) is specified at 10Ω, and the reverse leakage current is 100µA at 1V. The operating temperature range spans from -65°C to 200°C, supporting use in harsh environments.

 

The diode is housed in a DO-204AL (DO-41) axial-lead package, which is compatible with through-hole mounting. This package is widely used in general-purpose power and signal conditioning circuits.

1N4728ATR Quick Information

Product Type: Zener Diode
Series: 1N4728
Canonical Name: 1N4728ATR Zener Diode, 3.3V, 1W, DO-204AL (DO-41), Through Hole
Subcategory: Single Zener Diode

1N4728ATR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

1N4728ATR Features

  • 3.3V Zener voltage with ±5% tolerance.
  • 1W power dissipation rating.
  • 10Ω Zener impedance (Zzt).
  • Through-hole DO-204AL (DO-41) package.
  • Operating temperature range -65°C to 200°C.

1N4728ATR Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection for sensitive components.
  • Reference voltage generation in analog designs.
  • Clamping in power supply input stages.

1N4728ATR FAQs

5 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N4728ATR?

The Zener voltage is 3.3V with a tolerance of ±5%.

What is the power dissipation rating of this Zener diode?

The power dissipation is 1W.

What package does the 1N4728ATR come in?

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

What is the operating temperature range?

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

What is the Zener impedance of this diode?

The Zener impedance (Zzt) is 10Ω.

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