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FDBS09H04A is listed in the Power Distribution Switches, Load Drivers range at ChipApex. The manufacturer field lists onsemi. Its product description is IC PWR SWITCH N-CHAN 1:1 TO263-7. Review the specifications below when checking this part for your BOM.
The FDBS09H04A is a high-side switch power supply chip manufactured by onsemi, formerly Fairchild Semiconductor. It features a single output and utilizes a TO-263 package with seven pins. The device has a maximum operating temperature of +150 °C and a minimum operating temperature of -40 °C. Its physical dimensions are 10.1 x 4.7 x 10.8 mm. The component is designed for through-hole installation and provides an on-resistance of 0.015 Ω with a rated power of 81W.
Verify the manufacturer origin, as this part was originally produced by Fairchild Semiconductor before its acquisition by onsemi. Confirm that the TO-263 package and pin configuration match the specific design requirements. Ensure compliance with relevant safety standards for high-power switching applications. Check for any specific ordering suffixes or revisions that may affect compatibility.
Select this component when a high-side switch with high thermal tolerance and significant power rating is required. The TO-263 package facilitates effective heat dissipation for continuous operation. Consider the 0.015 Ω on-resistance for efficiency calculations in low-voltage, high-current circuits. Ensure the system voltage does not exceed the device's maximum ratings.
This component belongs to the family of high-side power switches used in industrial and automotive electronics. Originally developed by Fairchild Semiconductor, it is now managed under the onsemi portfolio. These devices are critical for protecting loads and managing power flow in complex electronic systems where reliability under harsh conditions is essential.
Public confirmed substitute part numbers are not available in the provided documentation.
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