component
FODM124R2
Public Made by Adomby adom
onsemi Transistor, Photovoltaic Output Optoisolators, SOP-4-2.54mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
FODM124R2
onsemi · Transistor, Photovoltaic Output Optoisolators · SOP-4-2.54mm
FODM124R2 from onsemi, in a SOP-4-2.54mm. 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 | ANODE | input | Infrared emitting diode anode; continuous forward current IF(avg) is limited to 50 mA and reverse voltage VR to 6 V (page 4). |
| 2 | CATHODE | passive | Infrared emitting diode cathode, which is the return for the 50 mA continuous forward current limit with 6 V maximum reverse voltage (page 4). |
| 3 | EMITTER | passive | Phototransistor emitter; the emitter-collector breakdown voltage VECO is rated at 6 V maximum (page 4). |
| 4 | COLLECTOR | passive | Phototransistor collector; continuous collector current IC is limited to 80 mA and VCEO to 80 V for FODM124 (page 4). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOP-4-2.54mm |
| Category | Optoisolators |
| Pins | 4 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Storage Temperature | TSTG | -40 | 125 | °C | 4 | ||
| Operating Temperature | TOPR | -40 | 110 | °C | 4 | ||
| Junction Temperature | TJ | -40 | 125 | °C | 4 | ||
| Lead Solder Temperature | TSOL | 260 | °C | for 10 sec | 4 | ||
| Continuous Forward Current (emitter) | IF (avg) | 50 | mA | 4 | |||
| Peak Forward Current (emitter) | IF (pk) | 1 | A | 1 µs pulse, 300 pps. | 4 | ||
| Reverse Voltage (emitter) | VR | 6 | V | 4 | |||
| Emitter Power Dissipation | PD | 70 | mW | Derate linearly 1.41 mW/°C above 75°C | 4 | ||
| Continuous Collector Current | IC | 80 | mA | 4 | |||
| Collector-Emitter Voltage FODM124 | VCEO | 80 | V | FODM121 Series, FODM124 | 4 | ||
| Emitter-Collector Voltage | VECO | 6 | V | 4 | |||
| Detector Power Dissipation | PD | 150 | mW | Derate linearly 3.27 mW/°C above 80°C | 4 | ||
| Forward Voltage | VF | 1 | 1.3 | V | FODM121 Series, FODM124, IF = 10 mA | 5 | |
| Reverse Current | IR | 5 | µA | FODM121 Series, FODM124, FODM2701, VR = 5 V | 5 | ||
| Collector-Emitter Breakdown Voltage FODM124 | BVCEO | 80 | V | FODM121 Series, FODM124, IC = 1 mA, IF = 0 | 5 | ||
| Emitter-Collector Breakdown Voltage | BVECO | 7 | V | All, IE = 100 µA, IF = 0 | 5 | ||
| Collector Dark Current | ICEO | 100 | nA | All, VCE = 40 V, IF = 0 | 5 | ||
| Capacitance | CCE | 10 | pF | All, VCE = 0 V, f = 1 MHz | 5 | ||
| DC Current Transfer Ratio FODM124 (IF=1 mA) | CTR | 100 | 1200 | % | FODM124, IF = 1 mA, VCE = 0.5 V | 5 | |
| DC Current Transfer Ratio FODM124 (IF=0.5 mA) | CTR | 50 | % | FODM124, IF = 0.5 mA, VCE = 1.5 V | 5 | ||
| Saturation Voltage FODM124 | VCE(SAT) | 0.4 | V | FODM124, IF = 1 mA, IC = 0.5 mA | 5 | ||
| Rise Time (Non-Saturated) | tr | 3 | µs | All, IC = 2 mA, VCE = 5 V, RL = 100 Ω | 5 | ||
| Fall Time (Non-Saturated) | tf | 3 | µs | All, IC = 2 mA, VCE = 5 V, RL = 100 Ω | 5 | ||
| Steady State Isolation Voltage | VISO | 3750 | VACRMS | All, 1 minute | 5 | ||
| Maximum Working Insulation Voltage | VIORM | 565 | Vpeak | 3 | |||
| Highest Allowable Over-Voltage | VIOTM | 6000 | Vpeak | 3 | |||
| Case Temperature (safety limit) | TS | 150 | °C | Safety limit value | 3 | ||
| Input Current (safety limit) | IS,INPUT | 200 | mA | Safety limit value | 3 | ||
| Output Power (safety limit) | PS,OUTPUT | 300 | mW | Safety limit value | 3 |
CAD (KiCad official)
- Symbol:
FODM124R2 - Footprint:
Package_SO:SOP-4_3.8x4.1mm_P2.54mm - 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files:
fodm124r2-etched.step/fodm124r2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fodm124r2.step/fodm124r2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (13 pp, sha256
71a1d39a5398bdb9, retrieved 2026-10-26, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# FODM124R2
**onsemi** · Transistor, Photovoltaic Output Optoisolators · SOP-4-2.54mm
FODM124R2 from onsemi, in a SOP-4-2.54mm. 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 | ANODE | input | Infrared emitting diode anode; continuous forward current IF(avg) is limited to 50 mA and reverse voltage VR to 6 V (page 4). |
| 2 | CATHODE | passive | Infrared emitting diode cathode, which is the return for the 50 mA continuous forward current limit with 6 V maximum reverse voltage (page 4). |
| 3 | EMITTER | passive | Phototransistor emitter; the emitter-collector breakdown voltage VECO is rated at 6 V maximum (page 4). |
| 4 | COLLECTOR | passive | Phototransistor collector; continuous collector current IC is limited to 80 mA and VCEO to 80 V for FODM124 (page 4). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOP-4-2.54mm |
| Category | Optoisolators |
| Pins | 4 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Storage Temperature | TSTG | -40 | | 125 | °C | | 4 |
| Operating Temperature | TOPR | -40 | | 110 | °C | | 4 |
| Junction Temperature | TJ | -40 | | 125 | °C | | 4 |
| Lead Solder Temperature | TSOL | | | 260 | °C | for 10 sec | 4 |
| Continuous Forward Current (emitter) | IF (avg) | | | 50 | mA | | 4 |
| Peak Forward Current (emitter) | IF (pk) | | | 1 | A | 1 µs pulse, 300 pps. | 4 |
| Reverse Voltage (emitter) | VR | | | 6 | V | | 4 |
| Emitter Power Dissipation | PD | | | 70 | mW | Derate linearly 1.41 mW/°C above 75°C | 4 |
| Continuous Collector Current | IC | | | 80 | mA | | 4 |
| Collector-Emitter Voltage FODM124 | VCEO | | | 80 | V | FODM121 Series, FODM124 | 4 |
| Emitter-Collector Voltage | VECO | | | 6 | V | | 4 |
| Detector Power Dissipation | PD | | | 150 | mW | Derate linearly 3.27 mW/°C above 80°C | 4 |
| Forward Voltage | VF | | 1 | 1.3 | V | FODM121 Series, FODM124, IF = 10 mA | 5 |
| Reverse Current | IR | | | 5 | µA | FODM121 Series, FODM124, FODM2701, VR = 5 V | 5 |
| Collector-Emitter Breakdown Voltage FODM124 | BVCEO | 80 | | | V | FODM121 Series, FODM124, IC = 1 mA, IF = 0 | 5 |
| Emitter-Collector Breakdown Voltage | BVECO | 7 | | | V | All, IE = 100 µA, IF = 0 | 5 |
| Collector Dark Current | ICEO | | | 100 | nA | All, VCE = 40 V, IF = 0 | 5 |
| Capacitance | CCE | | 10 | | pF | All, VCE = 0 V, f = 1 MHz | 5 |
| DC Current Transfer Ratio FODM124 (IF=1 mA) | CTR | 100 | | 1200 | % | FODM124, IF = 1 mA, VCE = 0.5 V | 5 |
| DC Current Transfer Ratio FODM124 (IF=0.5 mA) | CTR | 50 | | | % | FODM124, IF = 0.5 mA, VCE = 1.5 V | 5 |
| Saturation Voltage FODM124 | VCE(SAT) | | | 0.4 | V | FODM124, IF = 1 mA, IC = 0.5 mA | 5 |
| Rise Time (Non-Saturated) | tr | | 3 | | µs | All, IC = 2 mA, VCE = 5 V, RL = 100 Ω | 5 |
| Fall Time (Non-Saturated) | tf | | 3 | | µs | All, IC = 2 mA, VCE = 5 V, RL = 100 Ω | 5 |
| Steady State Isolation Voltage | VISO | 3750 | | | VACRMS | All, 1 minute | 5 |
| Maximum Working Insulation Voltage | VIORM | | | 565 | Vpeak | | 3 |
| Highest Allowable Over-Voltage | VIOTM | | | 6000 | Vpeak | | 3 |
| Case Temperature (safety limit) | TS | | | 150 | °C | Safety limit value | 3 |
| Input Current (safety limit) | IS,INPUT | | | 200 | mA | Safety limit value | 3 |
| Output Power (safety limit) | PS,OUTPUT | | | 300 | mW | Safety limit value | 3 |
## CAD (KiCad official)
- Symbol: `FODM124R2`
- Footprint: `Package_SO:SOP-4_3.8x4.1mm_P2.54mm`
- 3D model: SOP-4-2.54mm (KiCad packages3D, STEP)
- 3D model files: `fodm124r2-etched.step` / `fodm124r2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fodm124r2.step` / `fodm124r2.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/fodm124r2-d.pdf) (13 pp, sha256 `71a1d39a5398bdb9`, retrieved 2026-10-26, tier: manufacturer)
- **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/fodm124r2-datasheet.pdf)