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DTC143EE-MS
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MSKSEMI Bipolar (BJT), SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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DTC143EE-MS
MSKSEMI · Bipolar (BJT) · SOT-523
DTC143EE-MS from MSKSEMI, in a SOT-523. 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 | IN | input | Input terminal with built-in bias resistor R1 (4.7 kΩ typical, 3.29 to 6.11 kΩ), and input voltage limited to -10 V to +30 V per the maximum ratings. |
| 2 | GND | power_in | Ground terminal for the device. |
| 3 | OUT | output | Output terminal, with output current rated to 100 mA and supply voltage VCC rated to 50 V per the maximum ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-523 |
| Category | Transistors/Thyristors |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 50 | V | 3 | |||
| Input Voltage | VIN | -10 | 30 | V | 3 | ||
| Output Current | IO | 100 | mA | 3 | |||
| Power Dissipation | PD | 150 | mW | 3 | |||
| Junction Temperature | Tj | 150 | ℃ | 3 | |||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 3 | ||
| Input voltage | VI(off) | 0.5 | V | VCC=5V,IO=100µA | 3 | ||
| Input voltage | VI(on) | 3 | V | VO=0.3V,IO=20mA | 3 | ||
| Output voltage | VO(on) | 0.3 | V | IO/II=10mA/0.5mA | 3 | ||
| Input current | II | 1.8 | mA | VI=5V | 3 | ||
| Output current | IO(off) | 0.5 | μA | VCC=50V,VI=0 | 3 | ||
| DC current gain | GI | 20 | VO=5V,IO=10mA | 3 | |||
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | 3 | |
| Resistance ratio | R2/R1 | 0.8 | 1 | 1.2 | 3 | ||
| Transition frequency | fT | 250 | MHz | VO=10V,IO=5mA,f=100MHz | 3 |
CAD (KiCad official)
- Symbol:
DTC143EE-MS - Footprint:
Package_TO_SOT_SMD:SOT-523 - 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
dtc143ee-ms-etched.step/dtc143ee-ms-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dtc143ee-ms.step/dtc143ee-ms.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MSKSEMI datasheet (9 pp, sha256
a182ed49128cc14d, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).
# DTC143EE-MS
**MSKSEMI** · Bipolar (BJT) · SOT-523
DTC143EE-MS from MSKSEMI, in a SOT-523. 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 | IN | input | Input terminal with built-in bias resistor R1 (4.7 kΩ typical, 3.29 to 6.11 kΩ), and input voltage limited to -10 V to +30 V per the maximum ratings. |
| 2 | GND | power_in | Ground terminal for the device. |
| 3 | OUT | output | Output terminal, with output current rated to 100 mA and supply voltage VCC rated to 50 V per the maximum ratings. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-523 |
| Category | Transistors/Thyristors |
| Pins | 3 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | | | 50 | V | | 3 |
| Input Voltage | VIN | -10 | | 30 | V | | 3 |
| Output Current | IO | | | 100 | mA | | 3 |
| Power Dissipation | PD | | | 150 | mW | | 3 |
| Junction Temperature | Tj | | | 150 | ℃ | | 3 |
| Storage Temperature | Tstg | -55 | | 150 | ℃ | | 3 |
| Input voltage | VI(off) | | | 0.5 | V | VCC=5V,IO=100µA | 3 |
| Input voltage | VI(on) | 3 | | | V | VO=0.3V,IO=20mA | 3 |
| Output voltage | VO(on) | | | 0.3 | V | IO/II=10mA/0.5mA | 3 |
| Input current | II | | | 1.8 | mA | VI=5V | 3 |
| Output current | IO(off) | | | 0.5 | μA | VCC=50V,VI=0 | 3 |
| DC current gain | GI | 20 | | | | VO=5V,IO=10mA | 3 |
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | | 3 |
| Resistance ratio | R2/R1 | 0.8 | 1 | 1.2 | | | 3 |
| Transition frequency | fT | | 250 | | MHz | VO=10V,IO=5mA,f=100MHz | 3 |
## CAD (KiCad official)
- Symbol: `DTC143EE-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `dtc143ee-ms-etched.step` / `dtc143ee-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtc143ee-ms.step` / `dtc143ee-ms.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590230682372386816) (9 pp, sha256 `a182ed49128cc14d`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/dtc143ee-ms-datasheet.pdf)