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CBM2903AS8
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Corebai Microelectronics Comparators, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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CBM2903AS8
Corebai Microelectronics · Comparators · SOP-8
CBM2903AS8 from Corebai Microelectronics, in a SOP-8. 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 | OUT1 | output | Comparator 1 output; sinks at least 6.0 mA at VCC=5.0V and is open-collector style with output leakage up to 1000 nA, so unused outputs must be left open. |
| 2 | IN1(-) | input | Comparator 1 inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 3 | IN1(+) | input | Comparator 1 non-inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 4 | GND | power_in | Ground, or negative supply when operated from split supplies. |
| 5 | IN2(+) | input | Comparator 2 non-inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 6 | IN2(-) | input | Comparator 2 inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 7 | OUT2 | output | Comparator 2 output; sinks at least 6.0 mA at VCC=5.0V and has output leakage up to 1000 nA, so it must be left open if unused. |
| 8 | VCC | power_in | Positive supply, 5.0 to 30 V single supply (±2.5 to ±15 V split) with an absolute maximum of 36 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | SOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage | VIO | 5 | 9 | mV | V0=1.4V, VCC=5.0-30V, RS≤100Ω, VICR=0V-(VCC-1.5)V; typ value marked * (@25℃) | 3 | |
| Input Bias Current | IIB | 400 | nA | V0=1.4V, VCC=5.0-30V, VICR=0V-(VCC-1.5)V | 3 | ||
| Input Offset Current | IIO | -150 | 50 | 150 | nA | V0=1.4V, VCC=5.0-30V, VICR=0V-(VCC-1.5)V; typ marked * (@25℃) | 3 |
| Input Common Mode Voltage Range | VICR | 0 | V | VCC=5.0-30V; maximum printed as VCC-2.0V (not a fixed number) | 3 | ||
| Supply Current | ICC | 1 | 2.5 | mA | RL=∞, VCC=5.0V and RL=∞, VCC=30V; typ and max marked * (@25℃ for starred values) | 3 | |
| Output Sink Current | Isink | 6 | mA | VI(-)=1.0V, VI(+)=0V, V0≤1.5V, VCC=5.0V; min marked * (@25℃) | 3 | ||
| Saturation Voltage | Vsat | 700 | mV | VI(-)=1.0V, VI(+)=0V, Isink≤4.0mA, VCC=5.0V | 3 | ||
| Output Leakage Current | IOL | 0.1 | 1000 | nA | VI(+)=1.0V, VI(-)=0V, V0=5.0V; V0=30V; typ marked * (@25℃) | 3 | |
| Power Supply Voltages, Single Supply | VCC | 36 | V | Single supply | 2 | ||
| Power Supply Voltages, Split Supplies | VCC | -18 | 18 | V | Split supplies (printed ±18V) | 2 | |
| Input Differential Voltage Range | VIDR | 36 | V | 2 | |||
| Input Common Mode Voltage Range | VICR | -0.3 | V | Maximum printed as VCC; Note 1: split power supplies | 2 | ||
| Input Current, per pin | IIN | 50 | mA | Per pin; Note 2: VIN<-0.3V | 2 | ||
| Junction Temperature, Plastic Packages | TJ | 150 | ℃ | Plastic packages | 2 | ||
| Storage Temperature | Tstg | -65 | 150 | ℃ | 2 | ||
| Lead Temperature | TL | 260 | ℃ | 1mm from case for 10 seconds | 2 | ||
| Power Dissipation, Plastic Package | PD | 570 | mW | TA=25℃, plastic package | 2 | ||
| Power Dissipation Derating | PD | 5.7 | mW/℃ | Derate above 25℃, plastic package | 2 | ||
| DC Supply Voltage | VCC | 2.5 | 30 | V | Printed as ±2.5 or 5.0 (min) and ±15 or 30 (max); Ta=-40~85℃ | 2 | |
| Operating Temperature, All Package Types | TA | -40 | 85 | ℃ | All package types | 2 |
CAD (KiCad official)
- Symbol:
CBM2903AS8 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
cbm2903as8-etched.step/cbm2903as8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cbm2903as8.step/cbm2903as8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Corebai Microelectronics datasheet (6 pp, sha256
7eccb850618fe502, retrieved 2026-10-19, 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).
# CBM2903AS8
**Corebai Microelectronics** · Comparators · SOP-8
CBM2903AS8 from Corebai Microelectronics, in a SOP-8. 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 | OUT1 | output | Comparator 1 output; sinks at least 6.0 mA at VCC=5.0V and is open-collector style with output leakage up to 1000 nA, so unused outputs must be left open. |
| 2 | IN1(-) | input | Comparator 1 inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 3 | IN1(+) | input | Comparator 1 non-inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 4 | GND | power_in | Ground, or negative supply when operated from split supplies. |
| 5 | IN2(+) | input | Comparator 2 non-inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 6 | IN2(-) | input | Comparator 2 inverting input; common mode range is 0 to VCC-2.0V and the input should be kept within GND to VCC. |
| 7 | OUT2 | output | Comparator 2 output; sinks at least 6.0 mA at VCC=5.0V and has output leakage up to 1000 nA, so it must be left open if unused. |
| 8 | VCC | power_in | Positive supply, 5.0 to 30 V single supply (±2.5 to ±15 V split) with an absolute maximum of 36 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | SOP-8 |
| Category | Amplifiers/Comparators |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage | VIO | | 5 | 9 | mV | V0=1.4V, VCC=5.0-30V, RS≤100Ω, VICR=0V-(VCC-1.5)V; typ value marked * (@25℃) | 3 |
| Input Bias Current | IIB | | | 400 | nA | V0=1.4V, VCC=5.0-30V, VICR=0V-(VCC-1.5)V | 3 |
| Input Offset Current | IIO | -150 | 50 | 150 | nA | V0=1.4V, VCC=5.0-30V, VICR=0V-(VCC-1.5)V; typ marked * (@25℃) | 3 |
| Input Common Mode Voltage Range | VICR | 0 | | | V | VCC=5.0-30V; maximum printed as VCC-2.0V (not a fixed number) | 3 |
| Supply Current | ICC | | 1 | 2.5 | mA | RL=∞, VCC=5.0V and RL=∞, VCC=30V; typ and max marked * (@25℃ for starred values) | 3 |
| Output Sink Current | Isink | 6 | | | mA | VI(-)=1.0V, VI(+)=0V, V0≤1.5V, VCC=5.0V; min marked * (@25℃) | 3 |
| Saturation Voltage | Vsat | | | 700 | mV | VI(-)=1.0V, VI(+)=0V, Isink≤4.0mA, VCC=5.0V | 3 |
| Output Leakage Current | IOL | | 0.1 | 1000 | nA | VI(+)=1.0V, VI(-)=0V, V0=5.0V; V0=30V; typ marked * (@25℃) | 3 |
| Power Supply Voltages, Single Supply | VCC | | | 36 | V | Single supply | 2 |
| Power Supply Voltages, Split Supplies | VCC | -18 | | 18 | V | Split supplies (printed ±18V) | 2 |
| Input Differential Voltage Range | VIDR | | | 36 | V | | 2 |
| Input Common Mode Voltage Range | VICR | -0.3 | | | V | Maximum printed as VCC; Note 1: split power supplies | 2 |
| Input Current, per pin | IIN | | | 50 | mA | Per pin; Note 2: VIN<-0.3V | 2 |
| Junction Temperature, Plastic Packages | TJ | | | 150 | ℃ | Plastic packages | 2 |
| Storage Temperature | Tstg | -65 | | 150 | ℃ | | 2 |
| Lead Temperature | TL | | | 260 | ℃ | 1mm from case for 10 seconds | 2 |
| Power Dissipation, Plastic Package | PD | | | 570 | mW | TA=25℃, plastic package | 2 |
| Power Dissipation Derating | PD | | 5.7 | | mW/℃ | Derate above 25℃, plastic package | 2 |
| DC Supply Voltage | VCC | 2.5 | | 30 | V | Printed as ±2.5 or 5.0 (min) and ±15 or 30 (max); Ta=-40~85℃ | 2 |
| Operating Temperature, All Package Types | TA | -40 | | 85 | ℃ | All package types | 2 |
## CAD (KiCad official)
- Symbol: `CBM2903AS8`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `cbm2903as8-etched.step` / `cbm2903as8-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cbm2903as8.step` / `cbm2903as8.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Corebai Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590223833916874752) (6 pp, sha256 `7eccb850618fe502`, retrieved 2026-10-19, 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/cbm2903as8-datasheet.pdf)