MS8605 from Hangzhou Ruimeng Tech, in a SOT-23-5. 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	OUT	output	Op-amp output. Rail-to-rail output; VOH ≈ 4.99 V @ IL=1 mA (VCC=5 V), short-circuit current ±80 mA, closed-loop output impedance 11 Ω @ 1 MHz.
2	GND	power_in	Ground / negative supply reference. Connect to system ground (0 V).
3	+IN	input	Non-inverting input. Rail-to-rail input range 0 V to VCC; input bias current 0.2 pA typ; differential input voltage ±6 V max.
4	-IN	input	Inverting input. Rail-to-rail input range 0 V to VCC; input bias current 0.2 pA typ.
5	VCC	power_in	Positive supply. Operating range 2.7 V to 5.5 V, absolute max 6 V. Quiescent current 1.5 mA typ (1.8 mA max @ full temp).

Key specifications

Parameter	Value
Manufacturer	Hangzhou Ruimeng Tech
Package	SOT-23-5
Category	Op-amp/Cmp
Pins	5

Ordering variants

Same part, different packaging or reel option.

MS8605
MS8606
MS8606M

CAD (KiCad official)

Symbol: MS8605
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Hangzhou Ruimeng Tech datasheet (15 pp, sha256 da3671269efda5f4, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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