component
MMBD1203
Public Made by Adomby adom
onsemi Diodes - General Purpose, SOT-23. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMMBD1203
onsemi · Diodes - General Purpose · SOT-23
MMBD1203 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 | A1 | passive | Anode of the first diode in the series pair, per the MMBD1203 connection diagram; diodes are rated 100 V VRRM and 200 mA average forward current. |
| 2 | K2 | passive | Cathode of the second diode in the series pair, per the MMBD1203 connection diagram; diodes are rated 100 V VRRM and 200 mA average forward current. |
| 3 | K1/A2 | passive | Common center node joining the cathode of the first diode and the anode of the second diode in the series configuration. |
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 | 100 | V | IR = 100 μA | 3 | ||
| Forward Voltage | VF | 550 | 600 | mV | IF = 1.0 mA | 3 | |
| Forward Voltage | VF | 660 | 740 | mV | IF = 10 mA | 3 | |
| Forward Voltage | VF | 820 | 920 | mV | IF = 100 mA | 3 | |
| Forward Voltage | VF | 0.87 | 1 | V | IF = 200 mA | 3 | |
| Forward Voltage | VF | 1.1 | V | IF = 300 mA | 3 | ||
| Reverse Current | IR | 25 | nA | VR = 20 V | 3 | ||
| Reverse Current | IR | 50 | nA | VR = 50 V | 3 | ||
| Reverse Current | IR | 100 | μA | VR = 50 V, TA = 150°C | 3 | ||
| Total Capacitance | CT | 2 | pF | VR = 0, f = 1.0 MHz | 3 | ||
| Reverse Recovery Time | trr | 4 | nS | IF = IR = 10 mA, IRR = 1.0 mA, RL = 100 Ω | 3 | ||
| Maximum Repetitive Reverse Voltage | VRRM | 100 | 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 | |||
| Derate Above 25°C | 2.8 | mW/°C | 3 | ||||
| Thermal Resistance, Junction-to-Ambient | RθJA | 357 | °C/W | 3 |
CAD (KiCad official)
- Symbol:
MMBD1203 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbd1203-etched.step/mmbd1203-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbd1203.step/mmbd1203.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (8 pp, sha256
c5c40f64077298e7, retrieved 2026-10-21, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).