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MLM321MF

Public Made by Adom

by adom

MSKSEMI Operational Amplifier, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MLM321MF

MSKSEMI · Operational Amplifier · SOT-23-5

MLM321MF from MSKSEMI, in a SOT-23-5. 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 +IN input Non-inverting input; common-mode range includes ground (0V to V+ - 1.5V at 25°C) and it should not go more than 0.3V negative.
2 V- power_in Negative supply or ground for single-supply operation (V- = 0V in the test conditions).
3 -IN input Inverting input; common-mode range includes ground (0V to V+ - 1.5V at 25°C) and it should not go more than 0.3V negative.
4 OUTPUT output Op amp output that sources and sinks current, with continuous short-circuit to GND allowed only for V+ ≤ 15V at 25°C.
5 V+ power_in Positive supply, operating range 3V to 30V with an absolute maximum of 32V.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOT-23-5
Category Amplifiers/Comparators
Pins 5

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage (operating) 3 30 V 3
Supply Voltage (V+ - V−) absolute maximum 32 V 3
Input Voltage -0.3 32 V 3
Input Current 50 mA VIN < −0.3V (Note 6) 3
Junction Temperature 150 °C 3
Storage Temperature Range -65 150 °C 3
Lead Temp (Soldering) 260 °C 10 sec 3
Infrared 215 °C 10 sec 3
Operating Temperature Range -25 85 °C 3
Thermal Resistance to Ambient θJA 265 °C/W 3
ESD Tolerance 300 V Human Body Model, 1.5kΩ in series with 100pF (Note 10) 3
Input Offset Voltage VOS 2 7 mV (Note 7) 3
Input Offset Current IOS 5 50 nA 3
Input Bias Current IB 45 250 nA (Note 8) 3
Input Bias Current (boldface, temperature extremes) IB 500 nA (Note 8); boldface limit at temperature extremes 3
Input Common-Mode Voltage Range (lower limit) VCM 0 V V+ = 30V (Note 9) 3
Large Signal Voltage Gain AV 25 100 V/mV For CMRR >= 50dB; V+ = 15V, RL = 2kΩ, VO = 1.4V to 11.4V 3
Large Signal Voltage Gain (boldface, temperature extremes) AV 15 V/mV For CMRR >= 50dB; V+ = 15V, RL = 2kΩ, VO = 1.4V to 11.4V; boldface limit at temperature extremes 3
Power Supply Rejection Ratio PSRR 65 100 dB RS ≤ 10kΩ, V+ ≤ 5V to 30V 3
Common Mode Rejection Ratio CMRR 65 85 dB RS ≤ 10kΩ 3
Output Voltage Swing VOH (RL = 2kΩ) VOH 26 V V+ = 30V, RL = 2kΩ 3
Output Voltage Swing VOH (RL = 10kΩ) VOH 27 28 V V+ = 30V, RL = 10kΩ 3
Output Voltage Swing VOL VOL 5 20 mV V+ = 5V, RL = 10kΩ 3
Supply Current, No Load IS 0.43 0.7 mA V+ = 5V 3
Supply Current, No Load IS 0.66 1.5 mA V+ = 30V 3
Output Current Sourcing ISOURCE 20 40 mA VID = +1V, V+ = 15V, VO = 2V 3
Output Current Sinking ISINK 10 20 mA VID = −1V, V+ = 15V, VO = 2V 3
Output Short Circuit to Ground (low-voltage output) IO 12 100 µA (Note 2) V+ = 15V, VO = 0.2V 3
Output Short Circuit to Ground IO 40 85 mA (Note 2) V+ = 15V 3
Slew Rate SR 0.4 V/µs V+ = 15V, RL = 2kΩ, VIN = 0.5 to 3V, CL = 100pF, Unity Gain 3

CAD (KiCad official)

  • Symbol: MLM321MF
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: mlm321mf-etched.step / mlm321mf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mlm321mf.step / mlm321mf.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (9 pp, sha256 84ae41a66b745ff4, retrieved 2026-10-18, tier: lcsc)
  • 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