component
DS8402-50A3
Public Made by Adomby adom
DSTECH Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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DS8402-50A3
DSTECH · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
DS8402-50A3 from DSTECH, in a SOT-89-3. 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 | VIN | power_in | Input of supply voltage, with a recommended range of 2.5V to 36V and an absolute maximum of 40V to GND; place a 1µF or larger input capacitor close to the VIN and GND pins. |
| 2 | GND | power_in | Ground reference for the regulator; the output and input capacitor ground connections must return to this pin using a wide, short copper trace. |
| 3 | VOUT | power_out | Output of the regulator, which is 5.0V for the DS8402-50 variant, with an absolute maximum of 14V to GND and an output capacitor of 1µF to 22µF with at least 1mΩ ESR placed close to the VOUT and GND pins. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DSTECH |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| 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 | VIN | 2.5 | 36 | V | 5 | ||
| DC Output Voltage Accuracy | -1 | 1 | % | ILOAD =0.1mA | 5 | ||
| Dropout Voltage | VDROP | 0.35 | V | ILOAD =100mA; VOUT ≥ 5V | 5 | ||
| Output Current Limit | ILIM | 201 | 350 | mA | VOUT =0V | 5 | |
| Line Regulation | ΔLINE | 0.8 | % | ILOAD =1mA, 10V ≤ VIN ≤ 20V | 5 | ||
| Input Voltage (recommended) | VIN | 2.5 | 36 | V | 4 | ||
| Junction Temperature Range | -40 | 125 | °C | 4 | |||
| Ambient Temperature Range | -40 | 85 | °C | 4 | |||
| VIN to GND | -0.3 | 40 | V | 4 | |||
| VOUT to GND | -0.3 | 14 | V | 4 | |||
| VOUT to VIN | -40 | 0.3 | V | 4 | |||
| Package Thermal Resistance, junction-to-ambient | θJA | 120 | oC/W | SOT-89-3 package | 4 | ||
| Lead Temperature (soldering) | 260 | oC | Soldering, 10 sec. | 4 | |||
| Junction Temperature | 150 | oC | 4 | ||||
| Storage Temperature Range | -40 | 150 | oC | 4 | |||
| ESD Susceptibility HBM | 2 | KV | HBM | 4 | |||
| ESD Susceptibility MM | 200 | V | MM | 4 |
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 | must be back to the DS8402 ground pin using as wide and as short of a copper trace as is practical. | 9 |
CAD (KiCad official)
- Symbol:
DS8402-50A3 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
ds8402-50a3-etched.step/ds8402-50a3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ds8402-50a3.step/ds8402-50a3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DSTECH datasheet (13 pp, sha256
920d1bd86b5963da, 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).
# DS8402-50A3
**DSTECH** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
DS8402-50A3 from DSTECH, in a SOT-89-3. 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 | VIN | power_in | Input of supply voltage, with a recommended range of 2.5V to 36V and an absolute maximum of 40V to GND; place a 1µF or larger input capacitor close to the VIN and GND pins. |
| 2 | GND | power_in | Ground reference for the regulator; the output and input capacitor ground connections must return to this pin using a wide, short copper trace. |
| 3 | VOUT | power_out | Output of the regulator, which is 5.0V for the DS8402-50 variant, with an absolute maximum of 14V to GND and an output capacitor of 1µF to 22µF with at least 1mΩ ESR placed close to the VOUT and GND pins. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | DSTECH |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| 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 | VIN | 2.5 | | 36 | V | | 5 |
| DC Output Voltage Accuracy | | -1 | | 1 | % | ILOAD =0.1mA | 5 |
| Dropout Voltage | VDROP | | | 0.35 | V | ILOAD =100mA; VOUT ≥ 5V | 5 |
| Output Current Limit | ILIM | 201 | 350 | | mA | VOUT =0V | 5 |
| Line Regulation | ΔLINE | | | 0.8 | % | ILOAD =1mA, 10V ≤ VIN ≤ 20V | 5 |
| Input Voltage (recommended) | VIN | 2.5 | | 36 | V | | 4 |
| Junction Temperature Range | | -40 | | 125 | °C | | 4 |
| Ambient Temperature Range | | -40 | | 85 | °C | | 4 |
| VIN to GND | | -0.3 | | 40 | V | | 4 |
| VOUT to GND | | -0.3 | | 14 | V | | 4 |
| VOUT to VIN | | -40 | | 0.3 | V | | 4 |
| Package Thermal Resistance, junction-to-ambient | θJA | | | 120 | oC/W | SOT-89-3 package | 4 |
| Lead Temperature (soldering) | | | | 260 | oC | Soldering, 10 sec. | 4 |
| Junction Temperature | | | | 150 | oC | | 4 |
| Storage Temperature Range | | -40 | | 150 | oC | | 4 |
| ESD Susceptibility HBM | | | | 2 | KV | HBM | 4 |
| ESD Susceptibility MM | | | | 200 | V | MM | 4 |
## 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 | | must be back to the DS8402 ground pin using as wide and as short of a copper trace as is practical. | 9 |
## CAD (KiCad official)
- Symbol: `DS8402-50A3`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `ds8402-50a3-etched.step` / `ds8402-50a3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ds8402-50a3.step` / `ds8402-50a3.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [DSTECH datasheet](docs/ds8402-50a3-datasheet.pdf) (13 pp, sha256 `920d1bd86b5963da`, 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/ds8402-50a3-datasheet.pdf)