Logic-level N-channel power MOSFET that turns fully on from a 3.3 or 5 V gate drive, so a microcontroller pin can switch it directly without a gate driver. It blocks 30 V, carries up to 62 A, and has a low on-resistance (about 8.7 mOhm at 10 V gate, and still low at 4.5 V), which keeps heating down when switching motors, LEDs, and heaters. The TO-220 bolts to a heatsink for higher current. A common logic-level switch for hobby and low-voltage power control.

Pinout

Pin	Name	Type	Function
1	G	input	Gate. Insulated MOS gate controlling channel conduction. Threshold voltage VGS(th) = 1.35-2.35 V (typ 1.80 V). Absolute maximum VGS = ±20 V. Typical total gate charge Qg = 7.6 nC at VGS=4.5V/VDS=15V/ID=25A; internal gate resistance RG ≈ 2.3 Ω.
2	D	passive	Drain. Positive terminal of the N-channel MOSFET (also connects to the tab / thermal pad). Absolute maximum VDS = 30 V. Continuous drain current ID = 62 A at TC=25°C (44 A at TC=100°C); pulsed IDM = 250 A. Static RDS(on) max 8.7 mΩ @ VGS=10V, 16 mΩ @ VGS=4.5V.
3	S	passive	Source. Reference terminal for the N-channel MOSFET. Also the anode of the intrinsic body diode (drain = cathode): VSD ≤ 1.0 V, trr typ 16 ns, Qrr typ 14 nC, continuous body-diode source current IS = 62 A.

Key specifications

Parameter	Value
Type	N-channel logic-level MOSFET
VDS	30 V
ID (continuous)	62 A
RDS(on)	8.7 mOhm (VGS=10 V)
Gate threshold	1.35-2.35 V
Gate drive	Logic-level (3.3-5 V)
Package	TO-220

Ordering variants

Same part, different packaging or reel option.

IRLB8721PBF (TO-220)
IRLB8721PbF (TO-220, lead-free)

CAD (KiCad official)

Symbol: Transistor_FET:IRLB8721PBF (KiCad official)
Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
3D model: TO-220 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Infineon datasheet (10 pp, sha256 8a313aecdd1e7725, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF