FPF1039UCX

FPF1039UCX is a small, surface-mount power MOSFET (N-channel) from Fairchild/On Semiconductor. The UCX suffix denotes a compact package used for handheld and board-level switching.
- Function: primary switching element in DC-DC converters, load switching, and other power-management applications.
- Package: a small UCX/SC-70-like SMD package suitable for dense layouts.
- What to check in the datasheet: drain-source voltage (Vds), continuous drain current (Id), on-resistance (Rds(on)), gate threshold (Vgs(th)), gate charge (Qg), and thermal limits.
- Why use it: enables efficient switching at low gate drive voltages in compact devices.
For exact electrical specs, operating conditions, and pinout, consult the official datasheet for FPF1039UCX. Availability and ratings can vary by revision and lot. If you have a specific application, I can help map suitable operating ranges once you share the requirements.

Here are the typical features of the FPF1039UCX (N‑channel enhancement MOSFET in UCX package):
- N-channel enhancement-mode power MOSFET
- Very low on-resistance (Rds(on)) for high-efficiency conduction
- Logic-level gate drive (low Vgs required)
- Fast switching performance (trench/gate technology)
- Robust body diode suitable for inductive-load applications
- Ruggedness for switching and load-transient conditions
- Small UCX package (compact surface-mount)
- RoHS compliant and Pb-free
- Wide operating temperature range (typical industrial temps)
Note: Exact electrical specs (Vds, Id, Rds(on), gate thresholds, etc.) vary by revision. Please refer to the datasheet for precise numbers or share the specific version you need.

Pin count: 6 pins.
Function: Dual N-channel enhancement-mode MOSFET in a single 6-pin UCX package (two MOSFETs for switching in power/conversion applications).

- Manufacturer: Fairchild Semiconductor (now part of ON Semiconductor).
- What kind of company: A global semiconductor company that designs and manufactures discrete devices and integrated circuits (e.g., power MOSFETs, analog ICs).

Applications areas of FPF1039UCX:
- Low-voltage, high-speed switching in DC-DC converters (buck/boost)
- Load switching and power-path control in PMICs and battery-powered devices
- Small motor/actuator drives (fans, vib motors) with PWM
- Power management in portable electronics (phones, tablets, wearables)
- Solar/battery charging and energy-management circuits
- General N-channel switch for high-side/low-side switching in consumer and automotive electronics

6‑pin UDFN (DFN‑6) package, 2.0 mm × 2.0 mm. Please verify with the exact datasheet or distributor, as packaging variants can exist by supplier.