BTS3046SDRATMA1

@@ -0,0 +1,45 @@+# BTS3046SDRATMA1++**Infineon Technologies** · Power Distribution Switches · TO-252++BTS3046SDRATMA1 from Infineon Technologies, in a TO-252. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | IN | input | Logic-level gate/control input (VIN(ON) 2 V-10 V functional range, IIN(ON) ≤ 30 µA in normal operation). Compatible with 3.3 V/5 V logic and also supports analog drive. Also serves as a bi-directional fault-feedback node: on internal fault the pin sinks up to IIN(lim) ≈ 400 µA, pulling an external series resistor to signal the fault to the driving MCU. Input current is internally self-limited between −0.2 V and 10 V and clamped to ±2 mA outside that window. |+| 2 | Drain | power_in | Drain of the internal N-channel power DMOS; connects to the load return that goes to Vbat (low-side switching). Rated for VD up to 60 V active-clamped; functional drain voltage 2.5 V-36 V. Nominal load current 3.6 A, current limit ≥ 10 A. Electrically common with the exposed tab (pin 4). |+| 3 | Source | power_in | Source of the internal power DMOS; the module/board GND reference. All voltages in the datasheet are referenced to this pin; ESD HBM rating (±2 kV) is specified with Source tied to ground. |+| 4 | Drain | power_in | Exposed thermal tab, electrically the Drain (common with pin 2). Provides the primary heat-sinking path; RthJC ≈ 0.9 K/W, RthJA(2s2p) ≈ 27 K/W on a JESD51 2s2p board. Solder to a copper pour connected to the load return for thermal performance. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Infineon Technologies |+| Package | TO-252 |+| Category | Power Management (PMIC) |+| Pins | 4 |++## Ordering variants++Same part, different packaging or reel option.++- `BTS3046SDRATMA1`++## CAD (KiCad official)++- Symbol: `BTS3046SDRATMA1`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Infineon Technologies datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588939725617180672) (None pp, sha256 `b678104907d6c0a1`, retrieved 2026-08-17, tier: lcsc)+- **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/bts3046sdratma1-datasheet.pdf)

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