component
MLM321MF
Public Made by Adomby 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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mlm321mf.step/mlm321mf.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# 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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604440423309979648) (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](docs/mlm321mf-datasheet.pdf)