1N974B The 1N974B is a 36V Zener diode from ON Semiconductor in a DO-35 through-hole package. It features 500mW power dissipation and ±5% tolerance.
Mfr Part #:

1N974B

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The 1N974B is a 36V Zener diode from ON Semiconductor in a DO-35 through-hole package. It features 500mW power dissipation and ±5% tolerance.
Total Stock: 380 pcs
$ Price Range: $2.00

1N974B Available from 1 distributor

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1N974B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Impedance (Max) (Zzt)
Lead Style
Maximum Zener Current (IZM)
Mounting Type
Operating Temperature
Power
Power Derating
SVHC Present
Supplier Device Package
Tape & Reel
Termination Style
Test Current (Iz)
Tolerance
Voltage

1N974B Description

Short technical summary and product information.

The 1N974B is a 36V Zener diode designed for voltage regulation and reference applications. With a nominal Zener voltage of 36V and a tolerance of ±5%, it provides stable voltage clamping. The maximum power dissipation is 500mW at lead temperature ≤75°C, derating at 4.0mW/°C above 75°C. The device is tested at 3.4mA with a maximum impedance of 70Ω. Maximum reverse leakage current is 5µA at 27.4V. It operates over a wide temperature range of -65°C to 200°C.

 

Packaged in a rugged DO-35 glass case with axial leads, the 1N974B is suitable for through-hole mounting. It belongs to the 1N957B-1N979B series of Zener diodes from ON Semiconductor (originally Fairchild Semiconductor). Typical applications include voltage regulation, overvoltage protection, and voltage reference in low-power circuits.

1N974B Quick Information

Product Type: Zener Diode
Series: 1N974B
Canonical Name: 1N974B Zener Diode 36V 500mW ±5% DO-35
Subcategory: Single Zener Diode

1N974B Compliance

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

1N974B Estimated Pricing

Qty Low High
443+ $2.00 $2.00

Estimated market price range - modelled values for guidance only, not live distributor offers.

1N974B Features

  • 36V nominal zener voltage with ±5% tolerance.
  • 500mW power dissipation capability.
  • Maximum impedance of 70Ω at 3.4mA.
  • Through-hole DO-35 glass case package.
  • Wide operating temperature range -65°C to 200°C.

1N974B Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection for sensitive components.
  • Voltage reference in analog circuits.
  • Used in consumer and industrial electronics.

1N974B FAQs

6 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N974B?

The nominal Zener voltage is 36V with a tolerance of ±5%, giving a range of 34.2V to 37.8V.

What is the maximum power dissipation?

Maximum power dissipation is 500mW at lead temperature ≤75°C, derating at 4.0mW/°C above 75°C.

What is the maximum Zener current?

The maximum Zener current (IZM) is 8.5 mA.

What package is the 1N974B available in?

The 1N974B is available in a DO-35 (DO-204AH) glass case through-hole package with axial leads.

What is the operating temperature range?

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

What is the reverse leakage current?

Maximum reverse leakage current is 5 µA at VR = 27.4 V. (Note: Datasheet reports 0.25 µA at 5 V, indicating a potential data conflict.)

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