N-channel power MOSFET IRLB8721
Adafruit · MPN 355 · agent-readable version
$2.25indicative · 2026-08-18
Captured from Adafruit's own structured data on the date shown — not a quote. Availability is deliberately not claimed.
| Adafruit | $2.25 · 2026-08-18 | product page ↗ |
IRLB8721 datasheetsha256 efa4902a699c…
Specifications — every value carries its receipt
Electrical
| Continuous drain current @100°C (A) | 44 | datasheet p.1“ous Drain Current, VGS @ 10V 44 A IDM Pulsed Drain C” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Pulsed drain current (A) | 250 | datasheet p.1“Drain Current c 250 PD @TC = 25°C Maximum Power Dissipation g” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Max power dissipation @25°C (W) | 65 | datasheet p.1“Power Dissipation g 65” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Gate threshold voltage, max | 2.35 V | vendor page“MOSFET TO-220 Package Vds = 30V max Max current = 62A Vgs = 2.35V max Rds_on = as low as 8.7 milliohm - depending on Vgs Down” |
| On-resistance (min spec) | 8.7 milliohm | vendor page“0V max Max current = 62A Vgs = 2.35V max Rds_on = as low as 8.7 milliohm - depending on Vgs Downloads: Datasheet Tutorials: Driving” |
| Gate-source voltage abs max (V) | ± 20 | datasheet p.1“Source Voltage ± 20 ID @ TC = 25°C Continuous Drain Current, VGS @ 10V” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Max power dissipation @ TC=100°C (W) | 33 | datasheet p.1“Power Dissipation g 33 Linear Derating Factor” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Linear derating factor (W/°C) | 0.43 | datasheet p.1“Derating Factor 0.43 W/°C TJ Operating Junc” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| RDS(on) max @ VGS=4.5V (mΩ) | 16 | datasheet p.2“––– 13.1 16 VGS = 4.5V, I = 25A e” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Gate threshold voltage, typ (V) | 1.80 | datasheet p.2“GS(th) Gate Threshold Voltage 1.35 1.80 2.35 V VDS = VGS, ID = 25μA ΔVGS(th)/ΔTJ Gate T” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| IDSS drain-source leakage, max @ VDS=24V (μA) | 1.0 | datasheet p.2“Drain-to-Source Leakage Current ––– ––– 1.0 μA VDS = 24V, VGS = 0V” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| IGSS gate forward leakage, max (nA) | 100 | datasheet p.2“Gate-to-Source Forward Leakage ––– ––– 100 nA VGS = 20V Gate-to-Source Reverse” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Forward transconductance, min (S) | 35 | datasheet p.2“-20V gfs Forward Transconductance 35 ––– ––– S VDS = 15V, ID = 25A Qg” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| RG gate resistance, max (Ω) | 3.8 | datasheet p.2“Gate Resistance ––– 2.3 3.8 Ω td(on) Turn-On Delay Time” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| EAS single-pulse avalanche energy, max (mJ) | 98 | datasheet p.2“he Energy d ––– 98 mJ IAR Avalanche Current c” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Body-diode forward voltage, max (V) | 1.0 | datasheet p.2“Diode Forward Voltage ––– ––– 1.0 V TJ = 25°C, IS = 25A, VGS = 0V e trr” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Dissipation w/o heatsink, room temp (vendor) | 2 Watts | vendor page“, 3.3V, or 5V logic. The TO-220 package can dissipate up to 2 Watts without a heat sink (at room temperature). Because it has a” |
| Switchable current w/o heatsink (vendor) | 15 Amperes | vendor page“low as 9 milliohms, that means that you can switch at least 15 Amperes without a heat sink - more if you use PWM. For more detaile” |
| Channel polarity | N-channel | vendor page“N-channel power MOSFET [30V / 60A] : Adafruit Industries, Unique & fu” |
Performance
| Total gate charge, typ (nC) | 7.6 | datasheet p.2“g Total Gate Charge ––– 7.6 13 Qgs1 Pre-Vth Gate-to-Source Charge” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Rise time, typ (ns) | 93 | datasheet p.2“r Rise Time ––– 93 ––– ID = 25A td(off) Turn-Off Delay T” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Input capacitance, typ (pF) | 1077 | datasheet p.2“iss Input Capacitance ––– 1077 ––– VGS = 0V Coss Output Capacitance” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
Interface
| Logic-level gate drive | yes | vendor page“t directly from a microcontroller running on 2.8V, 3.3V, or 5V logic. The TO-220 package can dissipate up to 2 Watts without a h” |
Mechanical
| Package | TO-220AB | datasheet p.1“TO-220AB l Fully Characterized Avalanche Voltage” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
Environment
| Junction / storage temperature (°C) | -55 to + 175 | datasheet p.1“Operating Junction and -55 to + 175 TSTG Storage Temperature Range” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Soldering temperature, 10 s (°C) | 300 | datasheet p.1“Soldering Temperature, for 10 seconds 300 (1.6mm from case) Mounting torque, 6-32 o” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| RθJC junction-to-case, max (°C/W) | 2.3 | datasheet p.1“––– 2.3 RθCS Case-to-Sink, Flat Greased Surface” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| RθJA junction-to-ambient, max (°C/W) | 62 | datasheet p.1“f ––– 62 Notes through are on page 9 www.irf.com” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
Compliance & certification
| Lead-free (PbF) | yes | datasheet p.1“IRLB8721PbF and Current l Lead-Free” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
General
| Drain-source voltage | 30 V | datasheet p.1“: 30V 8.7m @VGS = 10V 7.6nC l High Frequency Isolated DC-DC Con” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| Continuous drain current | 62 | datasheet p.1“ous Drain Current, VGS @ 10V 62 ID @ TC = 100°C Continuous Drain Current, VGS @ 10V” https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
Used in
plant-waterer — as pump-driver