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DS8403-33S5

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DSTECH Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)ds8403-33s5factory-2.0.0extractor-text

Verified DS8403-33S5

by Ray · last 12 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

12 Nov 2026RayPublished by the parts factory: tier lcsc, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: DS8403-33S5 · SOT-23-5 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 12-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-9gqvc9x8/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.11)
  • ✓pads: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 19 kB, viewers/symbol.html 8 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ ds8403-33s5.kicad_sym✓ ds8403-33s5.kicad_mod✓ ds8403-33s5.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray
viewers ds8403-33s5: viewers rendered from the public page · Ray
ds8403-33s5-etched.glb ds8403-33s5: factory component page (tier=lcsc) · Ray
ds8403-33s5-etched.step ds8403-33s5: factory component page (tier=lcsc) · Ray
ds8403-33s5-hero.glb ds8403-33s5: hero GLB from the etched model (keeps the MPN mark) · Ray
ds8403-33s5-hero.overlay.json ds8403-33s5: hero GLB from the etched model (keeps the MPN mark) · Ray
ds8403-33s5.glb Publish 0.1.0 · Ray
ds8403-33s5.kicad_mod Publish 0.1.0 · Ray
ds8403-33s5.kicad_sym Publish 0.1.0 · Ray
ds8403-33s5.lbr Publish 0.1.0 · Ray
ds8403-33s5.step Publish 0.1.0 · Ray
package.json Publish 0.1.0 · Ray
page.json Set visibility: public · Ray
README.md Publish 0.1.0 · Ray
verification.json Verified: Published by the parts factory: tier lcsc, 5 pins · Ray

DS8403-33S5

DSTECH · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

DS8403-33S5 from DSTECH, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

Pinout

Pin Name Type Function
1 VIN power_in Input of supply voltage, specified from 2.5V to 40V in the electrical characteristics, with a 1uF or larger input capacitor placed close to the VIN and GND pins.
2 GND power_in Ground reference for the regulator; input and output capacitor grounds must return to this pin through as wide and short a copper trace as practical.
3 EN input Enable control input; pulling EN low shuts the regulator down with a typical shutdown current of 100nA, with VIH 1.1V rising and VIL 0.4V falling thresholds.
4 NC unconnected No internal connection.
5 VOUT power_out Output of the regulator, fixed at 3.3V for this variant; stable with a ceramic or tantalum output capacitor of 1uF to 22uF with minimum 1mOhm ESR, placed close to VOUT and GND.

Key specifications

Parameter Value
Manufacturer DSTECH
Package SOT-23-5
Category Power Management (PMIC)
Pins 5

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 40 V 6
DC Output Voltage Accuracy -1 1 % ILOAD =0.1mA 6
Output Current Limit ILIM 501 700 mA VOUT =0 6
Line Regulation ΔLINE 0.8 % ILOAD =1mA, 10V ≤ VIN ≤ 20V 6
Shutdown Ground Current ISD 0.1 0.5 μA VEN = 0V, VOUT = 0V 6
EN Input Current IEN 10 100 nA VEN = 24V 6
Absolute max: VIN, EN to GND -0.3 40 V 5
Absolute max: VOUT to GND -0.3 14 V 5
Absolute max: VOUT to VIN -45 0.3 V 5
Junction Temperature 150 °C 5
Storage Temperature Range -40 150 °C 5
ESD Susceptibility HBM 2 KV 5
ESD Susceptibility MM 200 V 5
Input Voltage VIN (recommended) VIN 2.5 36 V 5
Junction Temperature Range (recommended) TJ -40 125 °C 5
Ambient Temperature Range (recommended) TA -40 85 °C 5
Dropout Voltage (3.3V output) VDROP_3.3V 0.38 V ILOAD =100mA; VOUT = 3.3V 6
Ground Current IQ 2 μA ILOAD = 0mA; VOUT ≤ 5V 6
Enable Threshold Voltage (rising) VIH 1.1 V EN Rising 6
Enable Threshold Voltage (falling) VIL 0.4 V EN Falling 6
Load Regulation ΔLOAD 0.5 % 10mA≤ ILOAD ≤ 0.1A 6
Power Supply Rejection Ratio PSRR 70 dB VOUT =3.3V, ILOAD =30mA, VIN = 12V, f = 1KHz 6
Thermal Shutdown Hysteresis ΔTSD 30 °C 6
Thermal Shutdown Temperature TSD 160 °C ILOAD =10mA 6
Package Thermal Resistance SOT-23-5 θJA 220 °C/W Note 2: TA = 25°C, DSTECH EVB board 5

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 DS8403 ground pin using as wide and as short of a copper trace as is practical. 10

CAD (land: KiCad; 3D: generated from the datasheet)

  • Symbol: DS8403-33S5
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5, generated on the KiCad land (body 1.6 x 2.896 mm, terminals on the pads, 1.092 mm tall, datasheet A, midpoint of min and max). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
  • 3D model files: ds8403-33s5-etched.step / ds8403-33s5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ds8403-33s5.step / ds8403-33s5.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: DSTECH datasheet (12 pp, sha256 f2a7ea1ae70f9ad0, retrieved 2026-11-12, 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: land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

Datasheet PDF