# BL8506-33CRM

**BL Shanghai Belling** · Supervisor And Reset ICs · SOT-23

BL8506-33CRM from BL Shanghai Belling, in a SOT-23. 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 | VOUT | output | Voltage detection output (CMOS, active low for the C type) that goes to GND level when VDD drops below -VDET (3.3V typ. for the -33 version), with absolute maximum output voltage of -0.3V to 12V and maximum output current of 70mA. |
| 2 | VSS | power_in | Ground pin. |
| 3 | VDD | power_in | Voltage input and supply pin, with recommended operating range of 0.7V to 10V and absolute maximum input voltage of -0.3V to 10V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BL Shanghai Belling |
| Package | SOT-23 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Detector threshold (falling, -VDET) | -VDET | 3.234 | 3.3 | 3.366 | V |  | 7 |
| Detector threshold hysteresis | VHYS | 0.066 | 0.132 | 0.198 | V |  | 7 |
| Maximum operating voltage | VDDH |  |  | 10 | V |  | 4 |
| Minimum operating voltage | VDDL |  | 0.5 |  | V |  | 4 |
| Output delay time | TPLH |  | 20 |  | uS |  | 8 |
| Nch output current | IOUT | 0.01 | 0.05 |  | mA | NCH, VDS=0.05V, VDD=0.7V | 8 |
| Nch output current | IOUT | 0.1 | 0.5 |  | mA | NCH, VDS=0.5V, VDD=0.85V | 8 |
| Nch output current | IOUT | 0.2 | 1 |  | mA | NCH, VDS=0.5V, VDD=1.0V | 8 |
| Nch output current | IOUT | 1 | 2 |  | mA | NCH, VDS=0.5V, VDD=1.5V | 8 |
| Input voltage | VIN | -0.3 |  | 10 | V |  | 4 |
| Output voltage range | VOUT | -0.3 |  | 12 | V |  | 4 |
| Maximum output current |  |  |  | 70 | mA |  | 4 |
| Power dissipation | PD |  |  | 250 | mW | SOT-23-3 | 4 |
| Ambient temperature | Ta | -40 |  | -85 | C | as printed '-40C -85C' | 4 |
| Storage temperature | Ts | -40 |  | -150 | C | as printed '-40C -150C' | 4 |
| Lead temperature |  |  |  | 260 | C | 10 S | 4 |
| Input voltage range (recommended) | VIN | 0.7 |  | 10 | V |  | 4 |
| Ambient temperature (recommended) | Ta | -40 | 25 | 85 | C |  | 4 |

## CAD (KiCad official)

- Symbol: `BL8506-33CRM`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bl8506-33crm-etched.step` / `bl8506-33crm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bl8506-33crm.step` / `bl8506-33crm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BL Shanghai Belling datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588904261388546048) (19 pp, sha256 `7579ec6f6d30b5a6`, retrieved 2026-10-18, tier: lcsc)
- **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/bl8506-33crm-datasheet.pdf)