The HSP06 series is a digital humidity and temperature sensor (often I²C or PWM output). It’s used in weather stations, HVAC systems, and data loggers. Under normal conditions, it should run at ambient temperature – not warm, not cold.
Symptom: A 24V motor driver board using four HSP06F1S4s in an H-bridge was reporting overheating at only 3A load (well below 6A rating).
Investigation:
Solution:
It is important to acknowledge that some device classes run hot by design. If the HSP06F1S4 is part of a linear battery charger or a linear voltage regulator (as opposed to a switcher), it will intentionally dissipate voltage drop as heat. For example: hsp06f1s4 hot
At 7W, this component will reach over 150°C without a massive heatsink. In this scenario, "HSP06F1S4 hot" is a correct, albeit undesirable, operational state. The solution is to switch to a DC-DC buck converter, not to blame the FET.
To prevent your hsp06f1s4 hot issue from becoming a catastrophic failure, implement these engineering best practices. The HSP06 series is a digital humidity and
The HSP06F1S4, especially in an SOP-8 package, relies on the PCB’s copper plane as a heatsink. If the drain pad is not connected to an adequate copper area (ideally a ground/power plane), heat accumulates in the silicon die. Hot spots can exceed 125°C within seconds under 4A loads.