1SMB5943BT3G Zener Diodes by ON Semiconductor

3.0 W Zener Diode Voltage Regulator

Status: Active
Series: 1SMB59
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

This 3.0 W Zener diode is designed for general purpose voltage regulation applications.
Distributor Price Stock
Logo for Avnet Silica Avnet Silica -
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Logo for Future Electronics Future Electronics US$0.09
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Logo for Avnet America Avnet America US$0.09
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Logo for Avnet Asia Avnet Asia US$0.08
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Logo for EBV Elektronik EBV Elektronik -
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Logo for RS Americas RS Americas US$0.22
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Logo for element14 element14 US$0.33
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Logo for Newark Electronics Newark Electronics US$0.13
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Logo for Farnell Farnell US$0.10
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Zener Voltage Range - 3.3 V to 200 V
ESD Rating of Class 3 (>16 KV) per Human Body Model
Flat Handling Surface for Accurate Placement
Package Design for Top Side or Bottom Circuit Board Mounting Mechanical Characteristics:
CASE: Void-free, transfer-molded plastic
FINISH: All external surfaces are corrosion resistant with readily solderable leads
LEADS: Modified L-Bend providing more contact area to bond pads
POLARITY: Cathode indicated by molded polarity notch.
Pb-Free Package are Available
AEC-Q101 Qualified and PPAP Capable
SZ Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements
Wide Range of Zener Breakdown Voltages
Voltage Regulation
MOSFET Gate Protection
End Products
Waveform Clipping
General Usage Device: Suitable for many different end products


Description 1SMB59, 56 V
Compliance Pb-free Halide free
VZ Typ (V) 56
P Max (W) 3
Package Type SMB-2

Alternative Descriptions

Diode Zener Single 56V 5% 550mW Automotive 2-Pin SMB T/R | Holdelec
DIODE ZENER 3W 56V SMB | Dan-Mar Components
Zener Diode 3W 56V 5% ESD 16KV SMB | RS
SMT TAPE | Component Electronics
1SMB5943B series 550 mW 56 V SMT Zener Voltage Regulator - DO-214AA | Future Electronics
Diode Zener Single 56V 5% 550mW 2-Pin SMB T/R | Avnet America
Diode, Zener, Vr 56V, If 200mA, Pkg SMB, Vf 1.5V, Tj +150degc, Pd 3W, Ir 6.7mA | ON Semiconductor 1SMB5943BT3G | RS Americas
DIODE, ZENER, 56V, 3W | element14
Zen Smb Reg 3W 56V Tr Rohs Compliant: Yes |Onsemi 1SMB5943BT3G | Newark Electronics
DIODE, ZENER, 56V, 3W, FULL REEL | Farnell

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Frequently Asked Questions

Where can I find additional details, specifications and documents for a 1SMB5943BT3G?

Additional datasheets, footprints and schematics for 1SMB5943BT3G are listed on our Part Details page. You can also find images and similar parts to 1SMB5943BT3G on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for 1SMB5943BT3G on our Product Comparison page. Access via the 'View Pricing & Stock' button to view 1SMB5943BT3G price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does 1SMB5943BT3G fall under?

The 1SMB5943BT3G is listed under Discrete & Power Modules > Zener Diodes.

Can I view similar or alternative parts?

You can view similar parts to 1SMB5943BT3G when available in the Zener Diodes range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the 1SMB5943BT3G you can contact the distributor directly for product support, shipping queries etc.

Is the 1SMB5943BT3G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for 1SMB5943BT3G have stock available?

Authorised distributors including RS, Avnet Silica, Future Electronics, Avnet America and Avnet Asia have stock available or on a lead time for 1SMB5943BT3G.

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