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YJS18N03A
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Yangzhou Yangjie Elec Tech MOSFETs, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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YJS18N03A
Yangzhou Yangjie Elec Tech · MOSFETs · SOP-8
YJS18N03A from Yangzhou Yangjie Elec Tech, in a SOP-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 | S | passive | Source of the N-channel MOSFET, connected internally with pins 2 and 3. |
| 2 | S | passive | Source of the N-channel MOSFET, connected internally with pins 1 and 3. |
| 3 | S | passive | Source of the N-channel MOSFET, connected internally with pins 1 and 2. |
| 4 | G | input | Gate of the N-channel MOSFET, with a maximum gate-source voltage of ±20 V. |
| 5 | D | passive | Drain of the MOSFET, connected internally with pins 6, 7 and 8, with a maximum drain-source voltage of 30 V. |
| 6 | D | passive | Drain of the MOSFET, connected internally with pins 5, 7 and 8, with a continuous drain current of 18 A at TA=25℃. |
| 7 | D | passive | Drain of the MOSFET, connected internally with pins 5, 6 and 8, with a pulsed drain current of 65 A. |
| 8 | D | passive | Drain of the MOSFET, connected internally with pins 5, 6 and 7, with RDS(ON) below 7.0 mohm at VGS=10 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOP-8 |
| Category | Transistors/Thyristors |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-source Voltage | VDS | 30 | V | 1 | |||
| Gate-source Voltage | VGS | -20 | 20 | V | 1 | ||
| Drain Current | ID | 18 | A | TA=25℃ @ Steady State | 1 | ||
| Drain Current | ID | 14.5 | A | TA=70℃ @ Steady State | 1 | ||
| Pulsed Drain Current | IDM | 65 | A | 1 | |||
| Total Power Dissipation | PD | 3 | W | TA=25℃ | 1 | ||
| Thermal Resistance Junction-to-Ambient | RθJA | 42 | ℃/W | @ Steady State | 1 | ||
| Junction and Storage Temperature Range | TJ ,TSTG | -55 | 150 | ℃ | 1 | ||
| Drain-Source Breakdown Voltage | BVDSS | 30 | V | VGS= 0V, ID=250μA | 2 | ||
| Zero Gate Voltage Drain Current | IDSS | 1 | μA | VDS=30V,VGS=0V | 2 | ||
| Gate-Body Leakage Current | IGSS | -100 | 100 | nA | VGS= ±20V, VDS=0V | 2 | |
| Gate Threshold Voltage | VGS(th) | 1 | 1.5 | 2.5 | V | VDS= VGS, ID=250μA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) | 4.5 | 7 | mΩ | VGS=10V, ID=18A | 2 | |
| Static Drain-Source On-Resistance | RDS(ON) | 6.6 | 10 | mΩ | VGS= 4.5V, ID=10A | 2 | |
| Diode Forward Voltage | VSD | 0.85 | 1.2 | V | IS=12A,VGS=0V | 2 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | mounting surface of the drain pins. RθJL is guaranteed by design, while RθJA is determined by the board design. The maximum rating presented here is based on mounting on a 1 in 2 pad of 2oz copper. | 2 |
CAD (KiCad official)
- Symbol:
YJS18N03A - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
yjs18n03a-etched.step/yjs18n03a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);yjs18n03a.step/yjs18n03a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Yangzhou Yangjie Elec Tech datasheet (7 pp, sha256
1913fc0f9e0b4216, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+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).
# YJS18N03A
**Yangzhou Yangjie Elec Tech** · MOSFETs · SOP-8
YJS18N03A from Yangzhou Yangjie Elec Tech, in a SOP-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 | S | passive | Source of the N-channel MOSFET, connected internally with pins 2 and 3. |
| 2 | S | passive | Source of the N-channel MOSFET, connected internally with pins 1 and 3. |
| 3 | S | passive | Source of the N-channel MOSFET, connected internally with pins 1 and 2. |
| 4 | G | input | Gate of the N-channel MOSFET, with a maximum gate-source voltage of ±20 V. |
| 5 | D | passive | Drain of the MOSFET, connected internally with pins 6, 7 and 8, with a maximum drain-source voltage of 30 V. |
| 6 | D | passive | Drain of the MOSFET, connected internally with pins 5, 7 and 8, with a continuous drain current of 18 A at TA=25℃. |
| 7 | D | passive | Drain of the MOSFET, connected internally with pins 5, 6 and 8, with a pulsed drain current of 65 A. |
| 8 | D | passive | Drain of the MOSFET, connected internally with pins 5, 6 and 7, with RDS(ON) below 7.0 mohm at VGS=10 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOP-8 |
| Category | Transistors/Thyristors |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-source Voltage | VDS | | | 30 | V | | 1 |
| Gate-source Voltage | VGS | -20 | | 20 | V | | 1 |
| Drain Current | ID | | | 18 | A | TA=25℃ @ Steady State | 1 |
| Drain Current | ID | | | 14.5 | A | TA=70℃ @ Steady State | 1 |
| Pulsed Drain Current | IDM | | | 65 | A | | 1 |
| Total Power Dissipation | PD | | | 3 | W | TA=25℃ | 1 |
| Thermal Resistance Junction-to-Ambient | RθJA | | | 42 | ℃/W | @ Steady State | 1 |
| Junction and Storage Temperature Range | TJ ,TSTG | -55 | | 150 | ℃ | | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 30 | | | V | VGS= 0V, ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS | | | 1 | μA | VDS=30V,VGS=0V | 2 |
| Gate-Body Leakage Current | IGSS | -100 | | 100 | nA | VGS= ±20V, VDS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | 1 | 1.5 | 2.5 | V | VDS= VGS, ID=250μA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) | | 4.5 | 7 | mΩ | VGS=10V, ID=18A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) | | 6.6 | 10 | mΩ | VGS= 4.5V, ID=10A | 2 |
| Diode Forward Voltage | VSD | | 0.85 | 1.2 | V | IS=12A,VGS=0V | 2 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | | mounting surface of the drain pins. RθJL is guaranteed by design, while RθJA is determined by the board design. The maximum rating presented here is based on mounting on a 1 in 2 pad of 2oz copper. | 2 |
## CAD (KiCad official)
- Symbol: `YJS18N03A`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `yjs18n03a-etched.step` / `yjs18n03a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `yjs18n03a.step` / `yjs18n03a.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917899007807488) (7 pp, sha256 `1913fc0f9e0b4216`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).
[Datasheet PDF](docs/yjs18n03a-datasheet.pdf)