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1SMB5942BT3G Zener diode rated at 51V with 3W power dissipation, ±5% tolerance, surface mount in SMB package. Pb-free and RoHS3 compliant.
Mfr Part #:

1SMB5942BT3G

Available from 5 distributors
Mfr Name: On Semiconductor
On Semiconductor
Zener diode rated at 51V with 3W power dissipation, ±5% tolerance, surface mount in SMB package. Pb-free and RoHS3 compliant.
Total Stock: 13,688 pcs

1SMB5942BT3G Available from 5 distributors

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Non-Authorised

1SMB5942BT3G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
ESD Rating
Flammability Rating
Forward Voltage
Halogen Free
Impedance (Max) (Zzt)
Impedance (Zzt)
Junction to Ambient Thermal Resistance
Junction to Lead Thermal Resistance
Lead Style
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Polarity
Power
Power Dissipation
Reverse Leakage Current
SVHC Present
Soldering Temperature
Standard Package Quantity
Storage Temperature
Supplier Device Package
Tape & Reel
Termination Style
Tolerance
Voltage
Zener Voltage

1SMB5942BT3G Description

Short technical summary and product information.

The 1SMB5942BT3G is a 51V Zener diode from On Semiconductor's 1SMB59xxBT3G series, offering a power dissipation of 3W. It features a low forward voltage of 1.5V at 200mA, reverse leakage current of 1µA at 38.8V, and a Zzt impedance of 70Ω. The device has an ESD rating of Class 3 (>16kV) per Human Body Model, ensuring robust protection in sensitive circuits.

 

Operating over a wide temperature range of -65°C to 150°C, it is suitable for demanding applications. The junction-to-lead thermal resistance is 25°C/W, and junction-to-ambient is 226°C/W, allowing effective heat management. The maximum lead temperature for soldering is 260°C for 10 seconds.

 

Packaged in a surface-mount DO-214AA (SMB) case with L-bend leads, the component is supplied in tape and reel with a standard quantity of 2500. The cathode is indicated by a polarity band. The package is UL 94 V-0 rated for flammability and is Pb-free.

1SMB5942BT3G Quick Information

Product Type: Zener Diode
Series: 1SMB59xxBT3G
Canonical Name: On Semiconductor 1SMB5942BT3G Zener Diode, 51V, 3W, Surface Mount, SMB
Subcategory: Single Zener Diode

1SMB5942BT3G Compliance

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

1SMB5942BT3G Features

  • Zener voltage rated at 51V nominal.
  • Power dissipation of 3W steady state.
  • ESD rating Class 3 exceeding 16kV.
  • Surface mount SMB package with L-bend leads.
  • Pb-free and RoHS3 compliant device.

1SMB5942BT3G Applications

  • Voltage regulation in power supplies.
  • Overvoltage protection in electronic circuits.
  • Clamping and reference in analog designs.

1SMB5942BT3G FAQs

3 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1SMB5942BT3G?

51 V.

What is the power dissipation rating?

3 W at lead temperature 75°C.

What is the operating temperature range?

-65°C to 150°C.

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