# CBM8541AST5

**Corebai Microelectronics** · Operational Amplifier · SOT-23-5

CBM8541AST5 from Corebai Microelectronics, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model). Symbol and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | output | Amplifier output with rail-to-rail swing, short-circuit current typically 55 mA. |
| 2 | V- | power_in | Negative supply (ground in single-supply use); supply range V+ to V- is 2.5V to 5.5V, absolute maximum 7.0V. |
| 3 | +IN | input | Non-inverting input with rail-to-rail range of -0.1V to 5.6V at Vs=5.5V, diode-clamped to the supply rails (limit current to 10mA). |
| 4 | -IN | input | Inverting input with rail-to-rail range of -0.1V to 5.6V at Vs=5.5V, diode-clamped to the supply rails (limit current to 10mA). |
| 5 | V+ | power_in | Positive supply, 2.5V to 5.5V relative to V-, absolute maximum 7.0V; place a 0.1uF capacitor across the supply pins. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | SOT-23-5 |
| Category | Amplifiers |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating Voltage Range | Vs | 2.5 |  | 5.5 | V | TJ 25℃ | 4 |
| Input Common-Mode Voltage Range | Vcm | -0.1 |  | 5.6 | V | Vs = 5.5V, 25℃ | 4 |
| Open-Loop Voltage Gain (RL=2kΩ) | AOL | 94 | 105 |  | dB | RL=2KΩ, Vo=0.15V to 4.85V, 25℃ | 4 |
| Open-Loop Voltage Gain (RL=2kΩ) | AOL | 85 |  |  | dB | RL=2KΩ, Vo=0.15V to 4.85V, -40℃ to 125℃ | 4 |
| Open-Loop Voltage Gain (RL=10kΩ) | AOL | 100 | 110 |  | dB | RL=10KΩ, Vo=0.05V to 4.95V, 25℃ | 4 |
| Open-Loop Voltage Gain (RL=10kΩ) | AOL | 90 |  |  | dB | RL=10KΩ, Vo=0.05V to 4.95V, -40℃ to 125℃ | 4 |
| Quiescent Current/Amplifier | IQ |  | 58 | 80 | uA | 25℃ | 4 |
| Power-Supply Rejection Ratio | PSRR | 72 | 90 |  | dB | Vs=2.5V to 5.5V, Vcm=(V-)+0.5V, 25℃ | 4 |
| Power-Supply Rejection Ratio | PSRR | 65 |  |  | dB | Vs=2.5V to 5.5V, Vcm=(V-)+0.5V, -40℃ to 125℃ | 4 |
| Input Offset Voltage | Vos |  | 0.6 | 3 | mV | 25℃ | 4 |
| Input Offset Voltage Average Drift | Vos TC |  |  | 2 | uV/℃ | -40℃ to 125℃ | 4 |
| Input Bias Current | IB |  | 1 | 10 | pA | 25℃ | 4 |
| Input Offset Current | Ios |  | 1 | 10 | pA | 25℃ | 4 |
| Common-Mode Rejection Ratio (Vcm=-0.1V to 4V) | CMRR | 71 | 90 |  | dB | Vs=5.5V, Vcm=-0.1V to 4V, 25℃ | 4 |
| Common-Mode Rejection Ratio (Vcm=-0.1V to 4V) | CMRR | 68 |  |  | dB | Vs=5.5V, Vcm=-0.1V to 4V, -40℃ to 125℃ | 4 |
| Common-Mode Rejection Ratio (Vcm=-0.1V to 5.6V) | CMRR | 60 | 80 |  | dB | Vs=5.5V, Vcm=-0.1V to 5.6V, 25℃ | 4 |
| Common-Mode Rejection Ratio (Vcm=-0.1V to 5.6V) | CMRR | 57 |  |  | dB | Vs=5.5V, Vcm=-0.1V to 5.6V, -40℃ to 125℃ | 4 |
| Output Swing From Rail (RL=2kΩ) |  |  |  | 25 | mV | RL=2KΩ, 25℃ | 4 |
| Output Swing From Rail (RL=10kΩ) |  |  |  | 8 | mV | RL=10KΩ, 25℃ | 4 |
| Supply Current in Shutdown | IQ(OFF) |  |  | 1 | uA | 25℃ | 5 |
| Input Terminals Voltage |  | -0.5 |  |  | V | Referenced to supply rails; upper limit printed as (V+)+0.5V | 2 |
| Input Terminals Current |  | -10 |  | 10 | mA |  | 2 |
| Storage Temperature |  | -65 |  | 150 | °C |  | 2 |
| Operating Temperature |  | -40 |  | 125 | °C |  | 2 |
| Junction Temperature |  |  |  | 150 | °C |  | 2 |
| Package Thermal Resistance SOT23-5 |  |  |  | 200 | °C/W | TA=+25°C | 2 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `CBM8541AST5`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5, generated on the KiCad land (body 1.6 x 2.92 mm, terminals on the pads, 1.15 mm tall, datasheet A, midpoint of min and max). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `cbm8541ast5-etched.step` / `cbm8541ast5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cbm8541ast5.step` / `cbm8541ast5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Corebai Microelectronics datasheet](docs/cbm8541ast5-datasheet.pdf) (21 pp, sha256 `5886251d55cb5c6e`, retrieved 2026-11-13, 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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/cbm8541ast5-datasheet.pdf)