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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
Derating Factor
ESD Rating
Flammability
Flammability Rating
Impedance (Max) (Zzt)
Maximum Lead Temperature for Soldering
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
Power Dissipation (Max) @ TL=75°C
Power Dissipation (TA=25°C)
Reverse Leakage Current
SVHC Present
Standard Package Quantity
Supplier Device Package
Tape & Reel
Termination Style
Thermal Resistance, Junction to Lead
Tolerance
Voltage
Voltage - Forward (Vf) (Max) @ If
Zener Voltage (Nominal)

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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