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BAT54SFILMY
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STMicroelectronics Schottky Diodes, SOT-23. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
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BAT54SFILMY
STMicroelectronics · Schottky Diodes · SOT-23
BAT54SFILMY from STMicroelectronics, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K1/A2 | passive | One outer terminal of the internal series-connected Schottky diode pair (BAT54S 'series' configuration); shown in the SOT23-3L mechanical outline (Figure 8) as pin 1, one of the two leads on the two-pin side of the package. |
| 2 | K1/A2 | passive | Other outer terminal of the internal series-connected Schottky diode pair (BAT54S 'series' configuration); shown in the SOT23-3L mechanical outline (Figure 8) as pin 2, the second lead on the two-pin side of the package. |
| 3 | Common node | passive | Single lead on the opposite side of the package (Figure 8, pin 3); per the 'series' schematic on page 1 this is the internal junction node between the two series-connected diodes. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
BAT54SFILMY - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
bat54sfilmy-etched.step/bat54sfilmy-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bat54sfilmy.step/bat54sfilmy.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (11 pp, sha256
e2f21edc30e85ada, retrieved 2026-09-29, 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).
# BAT54SFILMY
**STMicroelectronics** · Schottky Diodes · SOT-23
BAT54SFILMY from STMicroelectronics, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K1/A2 | passive | One outer terminal of the internal series-connected Schottky diode pair (BAT54S 'series' configuration); shown in the SOT23-3L mechanical outline (Figure 8) as pin 1, one of the two leads on the two-pin side of the package. |
| 2 | K1/A2 | passive | Other outer terminal of the internal series-connected Schottky diode pair (BAT54S 'series' configuration); shown in the SOT23-3L mechanical outline (Figure 8) as pin 2, the second lead on the two-pin side of the package. |
| 3 | Common node | passive | Single lead on the opposite side of the package (Figure 8, pin 3); per the 'series' schematic on page 1 this is the internal junction node between the two series-connected diodes. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `BAT54SFILMY`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bat54sfilmy-etched.step` / `bat54sfilmy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bat54sfilmy.step` / `bat54sfilmy.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589839420426776576) (11 pp, sha256 `e2f21edc30e85ada`, retrieved 2026-09-29, 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/bat54sfilmy-datasheet.pdf)