演示目录 / MOSFET
N-channel power MOSFET IRLB8721
Adafruit · MPN 355 · 智能体可读版本
$2.25参考价 · 2026-08-22
取自 Adafruit 自有结构化数据，日期如上所示 — 这不是报价。我们刻意不声明可获得性。
| Adafruit | $2.25 · 2026-08-22 | 产品页面 ↗ |
Partsgraph 佐证规格表（PDF）自有文档 · 由下列来源汇编
IRLB8721 datasheetsha256 efa4902a699c…
规格 — 每个数值都附带凭据
电气
| 连续漏极电流 @100°C (A) | 44 | 数据手册第 1 页“ous Drain Current, VGS @ 10V 44 A IDM Pulsed Drain C”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 脉冲漏极电流 (A) | 250 | 数据手册第 1 页“Drain Current c 250 PD @TC = 25°C Maximum Power Dissipation g”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 最大功耗 @25°C (W) | 65 | 数据手册第 1 页“Power Dissipation g 65”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 栅极阈值电压，max | 2.35 V | 供应商页面“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” |
| 导通电阻（最小规格值） | 8.7 milliohm | 供应商页面“0V max Max current = 62A Vgs = 2.35V max Rds_on = as low as 8.7 milliohm - depending on Vgs Downloads: Datasheet Tutorials: Driving” |
| 栅源电压绝对最大值 (V) | ± 20 | 数据手册第 1 页“Source Voltage ± 20 ID @ TC = 25°C Continuous Drain Current, VGS @ 10V”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 最大功耗 @ TC=100°C (W) | 33 | 数据手册第 1 页“Power Dissipation g 33 Linear Derating Factor”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 线性降额系数 (W/°C) | 0.43 | 数据手册第 1 页“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 | 数据手册第 2 页“––– 13.1 16 VGS = 4.5V, I = 25A e”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 栅极阈值电压，typ (V) | 1.80 | 数据手册第 2 页“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 漏源漏电流，max @ VDS=24V (μA) | 1.0 | 数据手册第 2 页“Drain-to-Source Leakage Current ––– ––– 1.0 μA VDS = 24V, VGS = 0V”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| IGSS 栅极正向漏电流，max (nA) | 100 | 数据手册第 2 页“Gate-to-Source Forward Leakage ––– ––– 100 nA VGS = 20V Gate-to-Source Reverse”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 正向跨导，min (S) | 35 | 数据手册第 2 页“-20V gfs Forward Transconductance 35 ––– ––– S VDS = 15V, ID = 25A Qg”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| RG 栅极电阻，max (Ω) | 3.8 | 数据手册第 2 页“Gate Resistance ––– 2.3 3.8 Ω td(on) Turn-On Delay Time”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| EAS 单脉冲雪崩能量，max (mJ) | 98 | 数据手册第 2 页“he Energy d ––– 98 mJ IAR Avalanche Current c”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 体二极管正向压降，max (V) | 1.0 | 数据手册第 2 页“Diode Forward Voltage ––– ––– 1.0 V TJ = 25°C, IS = 25A, VGS = 0V e trr”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 无散热器时的功耗，室温（供应商） | 2 Watts | 供应商页面“, 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” |
| 无散热器时可开关的电流（供应商） | 15 Amperes | 供应商页面“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” |
| 通道极性 | N-channel | 供应商页面“N-channel power MOSFET [30V / 60A] : Adafruit Industries, Unique & fu” |
性能
| 总栅极电荷，typ (nC) | 7.6 | 数据手册第 2 页“g Total Gate Charge ––– 7.6 13 Qgs1 Pre-Vth Gate-to-Source Charge”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 上升时间，typ (ns) | 93 | 数据手册第 2 页“r Rise Time ––– 93 ––– ID = 25A td(off) Turn-Off Delay T”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 输入电容，typ (pF) | 1077 | 数据手册第 2 页“iss Input Capacitance ––– 1077 ––– VGS = 0V Coss Output Capacitance”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
接口
| 逻辑电平栅极驱动 | 是 | 供应商页面“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” |
机械
| 封装 | TO-220AB | 数据手册第 1 页“TO-220AB l Fully Characterized Avalanche Voltage”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
环境
| 结温 / 存储温度 (°C) | -55 to + 175 | 数据手册第 1 页“Operating Junction and -55 to + 175 TSTG Storage Temperature Range”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 焊接温度，10 s (°C) | 300 | 数据手册第 1 页“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 结到壳，max (°C/W) | 2.3 | 数据手册第 1 页“––– 2.3 RθCS Case-to-Sink, Flat Greased Surface”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| RθJA 结到环境，max (°C/W) | 62 | 数据手册第 1 页“f ––– 62 Notes through are on page 9 www.irf.com”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
合规
| 无铅 (PbF) | 是 | 数据手册第 1 页“IRLB8721PbF and Current l Lead-Free”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
通用
| 漏源电压 | 30 V | 数据手册第 1 页“: 30V 8.7m @VGS = 10V 7.6nC l High Frequency Isolated DC-DC Con”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
| 连续漏极电流 | 62 | 数据手册第 1 页“ous Drain Current, VGS @ 10V 62 ID @ TC = 100°C Continuous Drain Current, VGS @ 10V”https://cdn-shop.adafruit.com/datasheets/irlb8721pbf.pdfsha256 efa4902a699c… |
用于
自动植物浇水器 — 作为 水泵驱动