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KDZTR3.9A is listed in the Single Zener Diodes range at ChipApex. The manufacturer field lists Rohm Semiconductor. Its product description is DIODE ZENER 3.9V 1W PMDU. Review the specifications below when checking this part for your BOM.
The KDZTR3.9A is a single Zener diode manufactured by Rohm Semiconductor, designed for surface-mount applications in the PMDU package (SOD-123FL). It features a nominal Zener voltage of 3.9 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1000 mW and operates at a test current of 40 mA. It is rated for a junction temperature up to 150 °C and a storage temperature range from -55 °C to 150 °C.
Verify the specific suffix 'A' against official Rohm documentation to confirm exact binning or marking variations. Ensure the PMDU package footprint matches the target PCB design. Confirm RoHS compliance status for the specific manufacturing lot if required by regulatory standards.
Select this component when a 3.9 V Zener reference is required in a compact SMD form factor. Consider the 1 W power rating for thermal management in high-current scenarios. Verify that the ±5% tolerance meets the circuit's precision requirements compared to tighter tolerance alternatives.
This part belongs to Rohm's single Zener diode lineup, utilizing the PMDU surface-mount package. It serves as a voltage regulation element in electronic circuits. The KDZV3.9B is listed as a recommended replacement with identical pinout and package specifications.
The KDZV3.9B is documented as a recommended replacement with the same pinout and package. Verify compatibility before substitution.
The maximum power dissipation is 1000 mW.
The maximum junction temperature is 150 °C.
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