component

MC33161DR2G

Public Unreviewed

by Ray

onsemi Supervisor and Reset ICs, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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MC33161DR2G

onsemi · Supervisor and Reset ICs · SOIC-8

MC33161DR2G from onsemi, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Vref power_out Pinned-out 2.54 V bandgap reference output (typ 2.54 V; 2.48-2.60 V over line/load/temp). Short-circuit protected (Isc typ 8.5 mA). Can be used to bias the Mode Select input or external divider networks.
2 Input 1 input Comparator Channel 1 input. Threshold voltage Vth = 1.27 V typ with ~25 mV hysteresis. Input bias current ~40 nA at Vin = 1.0 V. Input range -1.0 V to +40 V.
3 Input 2 input Comparator Channel 2 input. Threshold voltage Vth = 1.27 V typ with ~25 mV hysteresis. Input bias current ~40 nA at Vin = 1.0 V. Input range -1.0 V to +40 V.
4 GND power_in Device ground / negative supply return.
5 Output 2 output Open-collector output for comparator Channel 2. Capable of sinking up to 10 mA (20 mA absolute max); VOL ~0.22 V at 10 mA. Off-state leakage <1 uA at VOH = 40 V. Requires an external pull-up resistor.
6 Output 1 output Open-collector output for comparator Channel 1. Capable of sinking up to 10 mA (20 mA absolute max); VOL ~0.22 V at 10 mA. Off-state leakage <1 uA at VOH = 40 V. Requires an external pull-up resistor.
7 Mode Select input Programs the polarity of each channel independently (inverting vs non-inverting), enabling over-, under-, and window-detection modes. Channel 1 threshold Vth(CH1) = Vref+0.23 V typ; Channel 2 threshold Vth(CH2) = 0.63 V typ. Typically tied to GND, VCC, or Vref.
8 VCC power_in Positive supply input. Operating range 2.0 V to 40 V (positive sensing) or 4.0 V to 40 V (negative sensing). Absolute max 40 V. Icc typ 450 uA at VCC = 5 V.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • MC33161DR2G
  • MC33161DR2GDG
  • MC33161DR2GPG
  • MC33161DR2GDMR2G
  • MC33161DR2GDMG

CAD (KiCad official)

  • Symbol: MC33161DR2G
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mc33161dr2g.step 122 KB You want the bare part, or you mark your own boards.
mc33161dr2g-etched.step 2.5 MB You want the part with MC33161DR2G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 599 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: onsemi datasheet (18 pp, sha256 ba7e5988c1519f46, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF