# MMBD1505A

**onsemi** · Diodes - General Purpose · SOT-23

MMBD1505A from onsemi, 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 | K1 | passive | Cathode of diode 1 in the dual common-anode MMBD1505A, with 200 V maximum repetitive reverse voltage and 200 mA average rectified forward current per the datasheet ratings. |
| 2 | K2 | passive | Cathode of diode 2 in the dual common-anode MMBD1505A, with 200 V maximum repetitive reverse voltage and 200 mA average rectified forward current per the datasheet ratings. |
| 3 | A | passive | Common anode of both diodes in the MMBD1505A, joined internally to the anodes of diodes 1 and 2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VR | 200 |  |  | V | IR = 5.0 A | 3 |
| Forward Voltage | VF | 620 |  | 720 | mV | IF = 1.0 mA | 3 |
| Forward Voltage | VF | 720 |  | 830 | mV | IF = 10 mA | 3 |
| Forward Voltage | VF | 800 |  | 890 | mV | IF = 50 mA | 3 |
| Forward Voltage | VF | 830 |  | 930 | mV | IF = 100 mA | 3 |
| Forward Voltage | VF | 0.87 |  | 1.1 | V | IF = 200 mA | 3 |
| Forward Voltage | VF | 0.9 |  | 1.15 | V | IF = 300 mA | 3 |
| Reverse Current | IR |  |  | 1 | nA | VR = 125 V | 3 |
| Reverse Current | IR |  |  | 3 | A | VR = 125 V, TA = 150°C | 3 |
| Reverse Current | IR |  |  | 10 | nA | VR = 180 V | 3 |
| Reverse Current | IR |  |  | 5 | A | VR = 180 V, TA = 150°C | 3 |
| Total Capacitance | CT |  |  | 4 | pF | VR = 0, f = 1.0 MHz | 3 |
| Maximum Repetitive Reverse Voltage | VRRM |  |  | 200 | V |  | 2 |
| Average Rectified Forward Current | IF(AV) |  |  | 200 | mA |  | 2 |
| Non-Repetitive Peak Forward Surge Current | IFSM |  |  | 1 | A | Pulse Width = 1.0 second | 2 |
| Non-Repetitive Peak Forward Surge Current | IFSM |  |  | 2 | A | Pulse Width = 1.0 microsecond | 2 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 2 |
| Operating Junction Temperature | TJ |  |  | 150 | °C |  | 2 |
| Power Dissipation | PD |  |  | 350 | mW |  | 3 |
| Thermal Resistance, Junction-to-Ambient | RJA |  |  | 357 | °C/W |  | 3 |

## CAD (KiCad official)

- Symbol: `MMBD1505A`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbd1505a-etched.step` / `mmbd1505a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbd1505a.step` / `mmbd1505a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590169208006356992) (7 pp, sha256 `9cd9f08f0a988ead`, retrieved 2026-10-17, 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/mmbd1505a-datasheet.pdf)