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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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1SMB5942BT3G Specifications Quick View

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