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1SMB5951BT3G On Semiconductor 1SMB5951BT3G is a 120V zener diode with 3W power dissipation and ±5% tolerance, housed in a surface mount DO-214AA (SMB) package.
Mfr Part #:

1SMB5951BT3G

Available from 6 distributors
Mfr Name: On Semiconductor
On Semiconductor
On Semiconductor 1SMB5951BT3G is a 120V zener diode with 3W power dissipation and ±5% tolerance, housed in a surface mount DO-214AA (SMB) package.
✓ Total Stock: 44,550 pcs

1SMB5951BT3G Available from 6 distributors

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1SMB5951BT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Impedance (Max) (Zzt)
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
SVHC Present
Supplier Device Package
Tape & Reel
Termination Style
Tolerance
Voltage
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1SMB5951BT3G Description

Short technical summary and product information.

The 1SMB5951BT3G is a 120V zener voltage regulator diode from On Semiconductor's 1SMB59xxBT3G series, offering 3W of power dissipation at a lead temperature of 75°C. The device features a ±5% tolerance on the nominal zener voltage and a maximum impedance of 380Ω.

 

This surface mount component is packaged in a DO-214AA (SMB) case with an L-bend termination style, suitable for automated assembly processes. It provides an ESD rating of Class 3 (>16 kV) per the Human Body Model and meets UL 94 V-0 flammability requirements. The operating temperature range spans from -65°C to 150°C.

 

Designed for voltage regulation applications, the diode offers a maximum forward voltage of 1.5V at 200 mA and a reverse leakage current of 1 µA at 91.2V. The device is supplied in tape and reel packaging with a standard quantity of 2500 pieces.

1SMB5951BT3G Quick Information

Product Type: Zener Diode
Series: 1SMB59xxBT3G
Canonical Name: 1SMB5951BT3G Zener Diode, 120V, 3W, Surface Mount, DO-214AA (SMB)
Subcategory: Single Zener Diode

1SMB5951BT3G Compliance

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

1SMB5951BT3G Features

  • Zener voltage of 120V nominal.
  • Power dissipation rated at 3W.
  • Surface mount DO-214AA (SMB) package.
  • ESD rating Class 3 above 16 kV.
  • Operating range from -65°C to 150°C.

1SMB5951BT3G Applications

  • Voltage regulation in power supplies.
  • Overvoltage protection circuits.
  • Used in telecom and industrial equipment.
  • Suitable for automotive applications (AEC-Q101 variant).

1SMB5951BT3G FAQs

6 frequently asked questions generated from this part’s specifications.
What is the zener voltage of the 1SMB5951BT3G?

The nominal zener voltage is 120V with ±5% tolerance.

What is the power dissipation rating of this diode?

The maximum power dissipation is 3W at a lead temperature of 75°C, derating 40 mW/°C above 75°C. At 25°C ambient on FR-4 board, it is 550 mW.

What package is the 1SMB5951BT3G available in?

It is available in a DO-214AA (SMB) surface mount package with L-bend leads.

What is the operating temperature range?

The operating and storage temperature range is -65°C to +150°C.

What is the maximum forward voltage?

The maximum forward voltage is 1.5V at a forward current of 200 mA.

What is the ESD rating of this zener diode?

It is rated Class 3 (>16 kV) per the Human Body Model.

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