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md1621

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by Ray

Shanghai Mingda Microelectronics Operational Amplifier, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentop-amp-cmpmd1621
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MD1621

Shanghai Mingda Microelectronics · Operational Amplifier · SOT-23-5

MD1621 from Shanghai Mingda Microelectronics, 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 VOUT output Amplifier output. Class-AB rail-to-rail output stage; can source/sink ~90 mA into a 10 Ω load referred to VDD/2. Slew rate 1.8 V/μs.
2 VSS power_in Negative supply / ground. Total supply (VDD − VSS) is 1.8 V to 5.5 V (6 V absolute maximum).
3 VIN+ input Non-inverting analog input. Rail-to-rail common-mode range (VSS − 0.1 V to VDD + 0.1 V at VDD = 5.5 V). Very low input bias current, typ 10 pA.
4 VIN- input Inverting analog input. Rail-to-rail common-mode range matches VIN+. Input offset voltage 0.8 mV typ (5 mV max at 25 °C).
5 VDD power_in Positive supply. Operating range 1.8 V to 5.5 V; 6 V absolute maximum with respect to VSS. Bypass locally to VSS with a 0.1 μF ceramic capacitor.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-23-5
Category Op-amp/Cmp
Pins 5

CAD (KiCad official)

  • Symbol: MD1621
  • 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: Shanghai Mingda Microelectronics datasheet (None pp, sha256 575577b2a07d7d2f, 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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