IRLB8721

@@ -0,0 +1,46 @@+# IRLB8721++**Infineon** · N-channel MOSFET · TO-220++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++- `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](https://www.infineon.com/dgdl/irlb8721pbf.pdf) (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](docs/irlb8721-datasheet.pdf)

@@ -0,0 +1,38 @@+{+  "slug": "irlb8721",+  "version": "0.1.0",+  "type": "component",+  "description": "Infineon logic-level N-channel power MOSFET, TO-220. 30 V, 62 A, low RDS(on), drives from 3.3 V logic. Datasheet-verified.",+  "tags": [+    "component",+    "discrete",+    "mosfet",+    "n-channel",+    "logic-level",+    "to-220",+    "infineon"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "irlb8721.kicad_sym",+    "irlb8721.kicad_mod",+    "irlb8721.glb",+    "irlb8721.step",+    "irlb8721.lbr",+    "docs/hero.png",+    "docs/irlb8721-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file