1N972B 1N972B is a 30V Zener diode with 500mW power dissipation. It is packaged in a DO-35 axial lead through-hole package.
Mfr Part #:

1N972B

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
1N972B is a 30V Zener diode with 500mW power dissipation. It is packaged in a DO-35 axial lead through-hole package.
Total Stock: 50 pcs

1N972B Available from 1 distributor

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1N972B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Impedance (Max) (Zzt)
Lead Spacing
Lead Style
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
Power Dissipation
Reverse Leakage Current @ VR
SVHC Present
Storage Temperature
Supplier Device Package
Tolerance
Voltage
Zener Voltage (Nominal)
Zener Voltage Tolerance

1N972B Description

Short technical summary and product information.

The 1N972B is a Zener diode from On Semiconductor, part of the 1N957B-1N979B series. It features a nominal zener voltage of 30V with ±5% tolerance. The diode can dissipate up to 500mW of power at 75°C lead temperature, derating at 4.0mW/°C above that. Maximum impedance at the test current is 49Ω. Reverse leakage current is 5µA at 22.8V. The device operates over a temperature range of -65°C to 200°C. It is housed in a DO-35 (DO-204AH) axial lead through-hole package, suitable for manual or automated insertion. Typical applications include voltage regulation, overvoltage protection, and reference voltage generation in low-power circuits.

1N972B Quick Information

Product Type: Zener Diode
Series: 1N957B-1N979B
Canonical Name: 1N972B Zener Diode, 30V, 500mW, DO-35
Subcategory: Single Zener Diode

1N972B Compliance

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

1N972B Features

  • 30V nominal zener voltage with ±5% tolerance.
  • 500mW power dissipation rating.
  • DO-35 through-hole axial package.
  • Operating temperature range -65°C to 200°C.
  • Low reverse leakage current of 5µA.

1N972B Applications

  • Voltage regulation in low-power circuits.
  • Overvoltage protection for sensitive components.
  • Reference voltage source in bias circuits.
  • Clamping in signal conditioning circuits.

1N972B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the zener voltage of the 1N972B?

30V nominal with ±5% tolerance.

What package is the 1N972B available in?

DO-35 (DO-204AH) axial lead through-hole package.

What is the power dissipation rating of the 1N972B?

500mW.

What is the operating temperature range of the 1N972B?

-65°C to 200°C.

What is the reverse leakage current of the 1N972B?

5µA at 22.8V.

What is the maximum impedance of the 1N972B?

49Ω at the test current.

What is the maximum zener current (IZM) for the 1N972B?

10 mA (from datasheet).

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