HE61CN2702MR from HEERMICR, in a SOT-23-3. 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	VOUT	output	N-channel open-drain detector output. Pulls to VSS when VDD <= VDET(-) (2.7 V nominal) and is high-impedance when VDD > VDET(+). Requires an external pull-up resistor (typ. 47 kOhm) to the monitored rail. Sink current 0.5 mA min at VOUT = 0.2 V.
2	GND	power_in	Ground / VSS reference for the detector.
3	VIN	power_in	Supply input and monitored voltage (VDD). Operating range 0.7 V to 10 V; absolute maximum 8 V per Absolute Maximum Ratings. Internally sensed against the fixed 2.7 V reference.

Key specifications

Parameter	Value
Manufacturer	HEERMICR
Package	SOT-23-3
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

HE61CN2702MRM
HE61CN2702MRN

CAD (KiCad official)

Symbol: HE61CN2702MR
Footprint: Package_TO_SOT_SMD:SOT-23-3
3D model: SOT-23-3 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HEERMICR datasheet (9 pp, sha256 b943b72ad8aee603, retrieved 2026-08-17, tier: lcsc)
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