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APX812-40UG-7

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Diodes Incorporated Monitors & Reset Circuits, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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APX812-40UG-7

Diodes Incorporated · Monitors & Reset Circuits · SOT-143-4

APX812-40UG-7 from Diodes Incorporated, in a SOT-143-4. 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 GND power_in Ground.
2 RESET output Push-pull active-high reset output on the APX812 (active-low on the APX811), guaranteed valid for VCC > 1V and held asserted for the reset timeout period (140/200/280 ms min/typ/max) after VCC rises above the threshold.
3 MR input Active-low manual reset input; a low level (pulse width at least 100 ns) forces the reset output active.
4 VCC power_in Operating voltage input, recommended 1.1V to 5.5V, absolute maximum 7V.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-143-4
Category Power Management ICs
Pins 4

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reset threshold (APX812-40) Vth 3.94 4 4.06 V TA = 25 °C 4
VCC Range VCC 1 5.5 V 4
Supply Current ICC 30 40 µA Vth + 0.2V 4
Set-up Time ts 20 µs VCC = Vth to (Vth, 100mV) 4
RESET Output Voltage-Low (APX812) VOL 0.3 V VCC = Vth +0.2, ISINK = 1.2mA 4
RESET Output Voltage-Low (APX812) VOL 0.4 V VCC = Vth +0.2, ISINK = 3.2mA 4
RESET Output Voltage-High (APX812) VOH 0.8 xVCC 1.8V < VCC < Vth -0.2, ISOURCE = 150uA 4
Pulse Width at MR tW 100 ns VCC> Vth+0.2V, VIL=0.3×VCC, VIH=0.7×VCC 4
Delay Time td 140 200 280 ms VCC> Vth+0.2V, See timing diagram 5
Propagation Time High-to-low, MR to RESET tPHL 0.1 µs VCC> Vth+0.2V, VIL=0.3×VCC, VIH=0.7×VCC 5
Propagation Time High-to-low, VCC to RESET tPHL 25 µs VIL= Vth-0.2V, VIH= Vth+0.2V 5
Propagation Time Low-to-high, MR to RESET tPLH 0.1 µs VCC> Vth+0.2V, VIL=0.3×VCC, VIH=0.7×VCC 5
Propagation Time Low-to-high, VCC to RESET tPLH 25 µs VIL= Vth-0.2V, VIH= Vth+0.2V 5
Supply voltage VCC -0.3 7 V 3
RESET voltage VRESET -0.3 V -0.3 to (Vcc+0.3) 3
Input Current, Vcc ICC 20 mA 3
Output current IO 20 mA 3
Power dissipation PD 320 mW 3
ESD Human Body Model ESD HBM 3 kV 3
ESD Machine Model ESD MM 500 V 3
Supply Voltage VCC 1.1 5.5 V 3
Input Voltage VIN 0 V 0 to (VCC+0.3) 3
Operating Ambient Temperature TA -40 85 °C 3
Thermal Resistance Junction-to-Ambient θJA 240 °C/W SOT143, FR-4 1"*1" 2oz copper single-sided 4
Thermal Resistance Junction-to-Case θJC 71 °C/W SOT143, FR-4 1"*1" 2oz copper single-sided 4

CAD (KiCad official)

  • Symbol: APX812-40UG-7
  • Footprint: Package_TO_SOT_SMD:SOT-143
  • 3D model: SOT-143-4 (KiCad packages3D, STEP)
  • 3D model files: apx812-40ug-7-etched.step / apx812-40ug-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); apx812-40ug-7.step / apx812-40ug-7.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (10 pp, sha256 7a730fe754bff472, retrieved 2026-10-23, tier: manufacturer)
  • 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