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1N2974B 1N2974B is a 10V, 10W Zener diode in a DO-203AA (DO-4) stud mount package. It features 3 Ω impedance and 10 µA reverse leakage current.
Mfr Part #:

1N2974B

Available from 1 distributors
Mfr Name: Solid State Devices Inc (SSDI)
Solid State Devices Inc (SSDI)
1N2974B is a 10V, 10W Zener diode in a DO-203AA (DO-4) stud mount package. It features 3 Ω impedance and 10 µA reverse leakage current.
Total Stock: 70 pcs

1N2974B Available from 1 distributor

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1N2974B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
ESD Sensitivity
Forward Voltage (Vf)
Impedance (Max) (Zzt)
Lead Style
Military Grade
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Polarity
Power
Power Dissipation (PD)
Radiation Hardness
Reverse Leakage Current (IR)
Storage Temperature
Storage Temperature Range
Supplier Device Package
Termination Style
Thermal Resistance Junction-to-Case (RθJC)
Tolerance
Voltage
Weight
Zener Impedance (Zzt)
Zener Voltage (Vz)

1N2974B Description

Short technical summary and product information.

The 1N2974B is a 10W Zener diode with a nominal Zener voltage of 10V. It is housed in a hermetically sealed DO-203AA (DO-4) stud mount package, designed for robust power regulation applications.

 

Key electrical characteristics include a Zener impedance of 3 Ω, a reverse leakage current of 10 µA at 7.6V, and a forward voltage of 1.5V at 2A. The device operates over a junction temperature range of -65°C to +175°C and has a thermal resistance of 12°C/W junction-to-case.

 

The stud mount configuration with solder tab termination allows efficient heat sinking, making it suitable for high-reliability power supply and voltage reference circuits. The part is inherently radiation hard and nonsensitive to ESD per MIL-STD-750.

1N2974B Quick Information

Product Type: Zener Diode
Series: 1N2974B
Canonical Name: 1N2974B 10V 10W Zener Diode, DO-203AA (DO-4) Stud Mount
Subcategory: Single Zener Diode

1N2974B Compliance

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

1N2974B Features

  • 10V Zener voltage with 10W power dissipation.
  • 3 Ω Zener impedance for stable regulation.
  • Hermetically sealed DO-203AA stud mount package.
  • Operates from -65°C to +175°C junction temperature.
  • Inherently radiation hard and ESD nonsensitive.

1N2974B Applications

  • Voltage regulation in power supply circuits.
  • Overvoltage protection in industrial electronics.
  • Reference voltage source for precision circuits.
  • High-reliability military and aerospace systems.

1N2974B FAQs

5 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N2974B?

The Zener voltage is 10V.

What is the power dissipation rating?

The power dissipation is 10W.

What package does the 1N2974B come in?

It comes in a DO-203AA (DO-4) stud mount package.

What is the forward voltage at 2A?

The forward voltage is 1.5V at 2A.

What is the operating temperature range?

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

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