1N4728A-T Zener diode with nominal voltage 3.3V, power dissipation 1W, and ±5% tolerance. Housed in a DO-41 through-hole package.
Mfr Part #:

1N4728A-T

Available from 1 distributors
Mfr Name: Diodes Incorporated
Diodes Incorporated
Zener diode with nominal voltage 3.3V, power dissipation 1W, and ±5% tolerance. Housed in a DO-41 through-hole package.
✓ Total Stock: 1,760 pcs

1N4728A-T Available from 1 distributor

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1N4728A-T 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
Power
Supplier Device Package
Tape & Reel
Temperature Coefficient
Termination Style
Tolerance
Voltage
Weight

1N4728A-T Description

Short technical summary and product information.

The 1N4728A-T is a 3.3V Zener diode from Diodes Incorporated, designed for general-purpose voltage regulation and clamping applications. It offers a nominal Zener voltage of 3.3V at a test current of 76 mA, with a tolerance of ±5%. The device can dissipate up to 1W of power, making it suitable for low-power circuits.

 

Key electrical characteristics include a maximum Zener impedance of 10 Ω at IZT and 400 Ω at IZK, a maximum reverse leakage current of 100 µA at 1V, and a forward voltage of 1.2V at 200 mA. The diode can handle a surge current of up to 1380 mA for 8.3 ms. The operating temperature range spans -65°C to 175°C.

 

The device is housed in a DO-41 (DO-204AL) through-hole package with axial leads. The case is made of glass with a tin-silver (Sn96.5Ag3.5) terminal finish. Polarity is indicated by a cathode band. The component weighs approximately 0.35 grams.

 

The datasheet for the 1N4728A-1N4761A series indicates that these parts are obsolete and discontinued. No alternate part is listed. Compliance includes RoHS3 and lead-free finish.

1N4728A-T Quick Information

Product Type: Zener Diode
Series: 1N4728A-1N4761A
Canonical Name: 1N4728A-T Zener Diode, 3.3V, 1W, DO-41
Subcategory: Single Zener Diode

1N4728A-T Compliance

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

1N4728A-T Features

  • Nominal Zener voltage of 3.3V.
  • Power dissipation rating of 1W.
  • ±5% tolerance on Zener voltage.
  • DO-41 through-hole package.
  • RoHS3 compliant with lead-free finish.

1N4728A-T Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection and clamping.
  • Reference voltage generation.
  • Surge suppression in DC lines.

1N4728A-T FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N4728A-T?

The nominal Zener voltage is 3.3V at a test current of 76 mA.

What is the power dissipation rating?

The power dissipation is 1W.

What is the forward voltage?

The maximum forward voltage is 1.2V at a forward current of 200 mA.

What is the package type?

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

What is the operating temperature range?

The operating temperature range is -65°C to 175°C.

What is the tolerance on the Zener voltage?

The tolerance is ±5%.

Is this part RoHS compliant?

Yes, it is RoHS3 compliant with a lead-free finish.

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