Active production — BOM-fit for fan-speed control
The TC649VPA is an active-production BLDC fan speed controller from Microchip's FanSense™ series, meaning it is a current-design-in choice for new builds — no last-time-buy clock to manage.
Through-hole 8-PDIP — prototyping and legacy integration
Housed in an 8-lead PDIP (0.300" body width), the TC649VPA is a through-hole part — it breadboards easily for firmware development and fits existing socketed or wave-solder production lines without an SMD reflow profile change. The parallel interface connects directly to GPIO pins on a host MCU; no SPI or I²C bus allocation is needed, which simplifies the firmware layer for simple on/off and speed-step control.
RoHS3 compliance is confirmed on the manufacturer's status, so the part passes EU and UKCA material restrictions without a waiver.