# MT9523CT-50BF5

**Magn Tek** · Current Sensors · SOP-8

MT9523CT-50BF5 from Magn Tek, 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 | IP+ | passive | Input current positive terminal, part of the internal conductor path (pins 1 and 2 to pins 3 and 4) with a typical resistance of 1.0 mΩ, electrically isolated from the signal pins 5 and 6. |
| 2 | IP+ | passive | Input current positive terminal, bonded to pin 1 as part of the internal 1.0 mΩ conductor path that is electrically isolated from the signal pins 5 and 6. |
| 3 | IP- | passive | Input current negative terminal, the return end of the internal 1.0 mΩ conductor path, electrically isolated from the signal pins 5 and 6. |
| 4 | IP- | passive | Input current negative terminal, bonded to pin 3 as part of the internal 1.0 mΩ conductor path, electrically isolated from the signal pins 5 and 6. |
| 5 | GND | power_in | Signal ground reference for the sensor outputs; the datasheet recommends placing the 0.1 µF bypass capacitor between the supply and ground pins close to the device. |
| 6 | VZCR | output | Zero-current reference voltage output (2.5 V fixed for the BF5 version, or ratiometric for BR versions), with a recommended 0.47 nF load capacitor, 4.7 kΩ minimum load resistance, and 1 nF maximum capacitive load to GND. |
| 7 | VOUT | output | Analog voltage output proportional to the input current, rated for 40 mA continuous source and sink current, not to exceed VCC + 0.5 V, with a load capacitance of 0.47 nF typical and 1 nF maximum to GND. |
| 8 | VCC | power_in | Supply voltage pin; the absolute maximum rating is 6 V, and the recommended supply for the 5 V version (BF5) is 4.5 V to 5.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Magn Tek |
| Package | SOP-8 |
| Category | Magnetic Sensors |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage (absolute max) | VCC |  |  | 6 | V |  | 7 |
| Supply reverse voltage | VRCC | -0.1 |  |  | V |  | 7 |
| Output reverse voltage | VROUT | -0.1 |  |  | V |  | 7 |
| Continuous output current (source) | IOUT(source) |  |  | 40 | mA |  | 7 |
| Continuous output current (sink) | IOUT(sink) |  |  | 40 | mA |  | 7 |
| Operating ambient temperature | TA | -40 |  | 125 | ℃ |  | 7 |
| Storage temperature | TS | -50 |  | 150 | ℃ |  | 7 |
| Junction temperature | TJ |  |  | 165 | ℃ |  | 7 |
| Supply voltage | VCC | 4.5 | 5 | 5.5 | V | XXBR5, XXBF5 | 8 |
| Supply current | ICC |  | 15 | 22 | mA | VCC=5V, TA=25°C | 8 |
| Analog output low level | VOL |  |  | 0.3 | V | RL>=4.7KΩ | 8 |
| Output capacitive load | CL |  | 0.47 | 1 | nF | OUT-GND | 8 |
| Output resistive load (pull-down) | RL | 4.7 |  |  | KΩ | 下拉到GND | 8 |
| Output resistive load (pull-up) | RL | 4.7 |  |  | KΩ | 上拉到VCC | 8 |
| Reference output capacitive load | CL_ZCR |  | 0.47 | 1 | nF | VZCR-GND | 8 |
| Reference-terminal resistive load (pull-down) | RL_ZCR | 4.7 |  |  | KΩ | 下拉到GND | 8 |
| Reference-terminal resistive load (pull-up) | RL_ZCR | 4.7 |  |  | KΩ | 上拉到VCC | 8 |
| Nonlinearity error | ELIN | -1 | 0.3 | 1 | % | Full Scale | 9 |
| Input current range | IPR | -50 |  | 50 | A |  | 16 |
| Zero-current reference output error | VOE_ZCR | -10 |  | 10 | mV | TA=25°C | 16 |
| Zero-current reference output error | VOE_ZCR | -20 |  | 20 | mV | TA=-40°C to 25°C | 16 |
| Zero-current output error (VOQ-VZCR) | VOE | -5 |  | 5 | mV | IP=0 A, TA=25°C | 16 |
| Zero-current output error (VOQ-VZCR) | VOE | -20 |  | 20 | mV | IP=0 A, TA=-40°C to 25°C | 16 |
| Zero-current output error (VOQ-VZCR) | VOE | -15 |  | 15 | mV | IP=0 A, TA=25°C to 125°C | 16 |
| Sensitivity error | ESNST | -1 |  | 1 | % | IP=50A, TA=25°C | 16 |
| Sensitivity error | ESNST | -2.5 |  | 2.5 | % | IP=50A, TA=-40°C to 25°C | 16 |
| Sensitivity error | ESNST | -2.2 |  | 2.2 | % | IP=50A, TA=25°C to 125°C | 16 |
| Total output error | ETOT | -1.5 |  | 1.5 | % | IP=50A, TA=25°C | 16 |
| Total output error | ETOT | -3.5 |  | 3.5 | % | IP=50A, TA = -40°C to 25°C | 16 |
| Total output error | ETOT | -3 |  | 3 | % | IP=50A, TA = 25°C to 125°C | 16 |

## CAD (KiCad official)

- Symbol: `MT9523CT-50BF5`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `mt9523ct-50bf5-etched.step` / `mt9523ct-50bf5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mt9523ct-50bf5.step` / `mt9523ct-50bf5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Magn Tek datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590389783601455104) (33 pp, sha256 `e5ce06576a0b0b62`, retrieved 2026-10-20, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/mt9523ct-50bf5-datasheet.pdf)