Description: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; MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260°C for 10 seconds; LEADS: Modified L-Bend providing more contact area to bond pads; POLARITY: Cathode indi
A recommended PCB layout for the SZ1SMB5940BT3G includes a solid ground plane, short and wide traces for the input and output pins, and a decoupling capacitor (e.g., 100nF) between the VIN and GND pins to reduce noise and improve stability.
To ensure the SZ1SMB5940BT3G operates within its SOA, monitor the device's junction temperature (TJ) and ensure it does not exceed the maximum rated temperature (150°C). Also, keep the voltage and current within the recommended operating ranges, and avoid operating the device in a region where the voltage and current ratings are exceeded simultaneously.
A recommended input capacitor value for the SZ1SMB5940BT3G is 10uF to 22uF, with a low ESR (Equivalent Series Resistance) and a voltage rating that matches or exceeds the input voltage. A ceramic or film capacitor with an X7R or X5R dielectric is suitable for this application.
To protect the SZ1SMB5940BT3G from overvoltage and overcurrent conditions, consider adding overvoltage protection (OVP) and overcurrent protection (OCP) circuits. OVP can be achieved using a voltage supervisor or a zener diode, while OCP can be implemented using a current sense resistor and a comparator or a dedicated OCP IC.
The thermal resistance of the SZ1SMB5940BT3G package is typically around 10°C/W to 15°C/W, depending on the specific package type and PCB design. This value can be used to estimate the junction temperature (TJ) based on the power dissipation and ambient temperature.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
SZ1SMB5940BT3G Overview
Use the download button to access the SZ1SMB5940BT3G schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like SZ1SM,
or try a keyword search, such as Zener Diodes
