

Overview
The FOD817ASD is a transistor, Photovoltaic Output Optoisolator made by onsemi in a SMD-4P package with 4 pins. -55℃~+110℃ 1 1.2V 100mV@1mA,20mA 200mW 3us 4us@2mA,100Ω 50% 50mA 50mA 5kV 600% 6V 70V DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Pro:FOD817ASD, from EasyEDA Pro) and its footprint (EasyEDA_Cloud:SMD-4_L4.6-W6.4-P2.54-LS10.0-BL, from EasyEDA), ready for a KiCad board. 29,593 are in stock at JLCPCB (part C241830). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Parameters
17- Current Transfer Ratio (CTR) Maximum/Saturation Value
- 600%
- Current Transfer Ratio (CTR) Minimum
- 50%
- Fall time
- 3us
- Forward Current(If)
- 50mA
- Input type
- DC
- Input voltage type
- DC
- Isolation Voltage(Vrms)
- 5kV
- Load Voltage
- 70V
- Number of Outputs
- 1
- Operating Temperature
- -55℃~+110℃
- Output Current
- 50mA
- Output Type
- Phototransistor
- Reverse Voltage
- 6V
- Rise time
- 4us@2mA,100Ω
- Total Power Dissipation(Pd)
- 200mW
- Vce Saturation(VCE(sat))
- 100mV@1mA,20mA
- Voltage - Forward(Vf)
- 1.2V
Order codes
1- FOD817ASDLCSC C241830
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | A | Unspecified |
| 2 | C | Unspecified |
| 3 | E | Unspecified |
| 4 | C | Unspecified |
Open-source boards using it
All 1- 2 layers38.2 × 17 mm

Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/onsemi/FOD817ASD" title="FOD817ASD in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/FOD817ASD.jpg" alt="FOD817ASD" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/FOD817ASD)Questions
Is there a KiCad symbol and footprint for the FOD817ASD?
Yes. The symbol is EasyEDA_Pro:FOD817ASD and the footprint EasyEDA_Cloud:SMD-4_L4.6-W6.4-P2.54-LS10.0-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the FOD817ASD?
SMD-4P, with 4 pins. Its footprint is drawn on this page.
Where is the FOD817ASD datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the FOD817ASD?
JLCPCB lists it as part C241830, with 29,593 in stock; the sellers' links on this page open their listings.
What can replace the FOD817ASD?
Parts like it in the library: the FOD817B3SD by onsemi, the ORPC-817SB-TP-F by Orient, the FOD814ASD by onsemi and the SFH6286-3T by Vishay Intertechnology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the FOD817ASD?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8FOD817B3SD
SMD-4P-55℃~+110℃ 1.2V 100mV@1mA,20mA 130% 200mW 260% 3us 4us@2mA,100Ω 50mA 50mA 5kV 6V 70V DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsORPC-817SB-TP-F
SOP-4-2.54mm-30℃~+100℃ 1 1.2V 100mV@20mA,1mA 200mW 35V 3us 4us 50% 50mA 50mA 5kV 600% 6V DC Phototransistor SOP-4-2.54mm Transistor, Photovoltaic Output Optoisolators ROHSOrientTransistor, Photovoltaic Output OptoisolatorsFOD814ASD
SMD-4P-55℃~+105℃ 1.2V 100mV@1mA,20mA 150% 200mW 3us 4us@2mA,100Ω 50% 50mA 50mA 5kV 70V AC,DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsSFH6286-3T
SMD-4P-55℃~+100℃ 1 1.1V 100% 250mV@0.8mA,1mA 3.5us@2mA,100Ω 320% 5.3kV 50mA 50mA 55V 5us AC,DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSVishay IntertechnologyTransistor, Photovoltaic Output OptoisolatorsLTV-816S-TP-C
SMD-4PTransistor, Photovoltaic Output OptoisolatorsLite-OnFOD814A3SD
SMD-4P-55℃~+105℃ 1 1.2V 100mV@1mA,20mA 150% 200mW 3us 4us@2mA,100Ω 50% 50mA 50mA 5kV 70V AC,DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsFOD852SD
SMD-4P-30℃~+100℃ 1 1.2V 1.2V@20mA,20mA 1000% 100us 15000% 150mA 200mW 20us 300V 50mA 5kV 6V DC Darlington Transistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsSFH6186-4T
SMD-4P-55℃~+100℃ 1 1.1V 150mW 160% 250mV@0.8mA,1mA 3.5us@2mA,100Ω 320% 5.3kV 50mA 55V 5us 60mA 6V DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSVishay IntertechnologyTransistor, Photovoltaic Output Optoisolators