component
SI4554DY
Public Made by Adomby adom
TECH PUBLIC MOSFETs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSI4554DY
TECH PUBLIC · MOSFETs · SOIC-8
SI4554DY from TECH PUBLIC, in a SOIC-8. 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 | S1 | passive | Source of the N-channel MOSFET (VDS 40V, ID 8A, RDS(ON) <19mΩ at VGS=10V). |
| 2 | G1 | input | Gate of the N-channel MOSFET (VGS ±20V max, threshold 1V min to 2.0V max at ID=250µA). |
| 3 | S2 | passive | Source of the P-channel MOSFET (VDS -40V, ID -7A, RDS(ON) <35mΩ at VGS=-10V). |
| 4 | G2 | input | Gate of the P-channel MOSFET (VGS ±20V max). |
| 5 | D2 | passive | Drain of the P-channel MOSFET (VDS -40V, pulsed IDM -30A), tied to pin 6. |
| 6 | D2 | passive | Drain of the P-channel MOSFET (VDS -40V, pulsed IDM -30A), tied to pin 5. |
| 7 | D1 | passive | Drain of the N-channel MOSFET (VDS 40V, pulsed IDM 40A), tied to pin 8. |
| 8 | D1 | passive | Drain of the N-channel MOSFET (VDS 40V, pulsed IDM 40A), tied to pin 7. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOIC-8 |
| Category | Transistors/Thyristors |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
SI4554DY - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
si4554dy-etched.step/si4554dy-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);si4554dy.step/si4554dy.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (9 pp, sha256
5a27352d6325020b, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).