2 layers123 × 87.5 mm
FastLOGIC
Neumi/fastLOGIC
An affordable Arduino-based board designed for straightforward (industrial) logic control, ideal for building small-scale automation and control solutions.
180 parts23MIT
Overview
The EL817 is a transistor, Photovoltaic Output Optoisolator made by Everlight Electronics in a DIP-4 package with 4 pins. -55℃~+110℃ 1 1.2V 100mV@20mA,1mA 18us 18us 5.8mA 50% 50V 5kV 600% 9V Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHS.
PCBKit's library has its KiCad symbol (Isolator:EL817, from KiCad's library) and its footprint (Package_DIP:DIP-4_W7.62mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C17588427). 82 open-source boards in 62 repositories on GitHub use it.
Symbol
Footprint
Parameters
13- Current Transfer Ratio (CTR) Maximum/Saturation Value
- 600%
- Current Transfer Ratio (CTR) Minimum
- 50%
- Fall time
- 18us
- Isolation Voltage(Vrms)
- 5kV
- Load Voltage
- 50V
- Number of Outputs
- 1
- Operating Temperature
- -55℃~+110℃
- Output Current
- 5.8mA
- Output Type
- Phototransistor
- Reverse Voltage
- 9V
- Rise time
- 18us
- Vce Saturation(VCE(sat))
- 100mV@20mA,1mA
- Voltage - Forward(Vf)
- 1.2V
Order codes
1- EL817LCSC C17588427
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | — | Passive |
| 2 | — | Passive |
| 3 | — | Passive |
| 4 | — | Passive |
Open-source boards using it
All 82- 2 layers140.7 × 47.4 mm
EG8010 A1
Millisman/EG8010
Collection of designs for the EG8010 (ASIC for single-phase SPWM control H-bridge)
201 parts17MIT - 4 layers97.5 × 99.9 mm
Esp32 wled controller
fellettigiacomo/esp32-WLED-4ch-controller
Open source 4 Channel esp32-powered WLED controller with 4 relays and built in level shifter
100 parts16CERN-OHL-S-2.0 - 2 layers37 × 90 mm
- 2 layers85.1 × 75.6 mm
- 2 layers70 × 30 mm
- 2 layers45 × 38 mm
- 2 layers51.6 × 18.5 mm
Anavi opto isolator
AnaviTechnology/anavi-opto-isolator
Opto-isolator board for Arduino, ESP32, Raspberry Pi, etc. Supports 12V to 3.3V, 12V to 5V, 24V to 3.3V, 24V to 5V.
6 parts2
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<iframe src="https://pcbkit.io/embed/parts/everlight/EL817" title="EL817 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/everlight/EL817.jpg" alt="EL817" width="1200" height="900">[](https://pcbkit.io/parts/everlight/EL817)Questions
Is there a KiCad symbol and footprint for the EL817?
Yes. The symbol is Isolator:EL817 and the footprint Package_DIP:DIP-4_W7.62mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the EL817?
DIP-4, with 4 pins. Its footprint is drawn on this page.
Where is the EL817 datasheet?
Everlight Electronics publishes it: the Datasheet link on this page opens it.
Where can I order the EL817?
JLCPCB lists it as part C17588427, with 0 in stock; the sellers' links on this page open their listings.
What can replace the EL817?
Parts like it in the library: the PC817C by GOODWORK, the EL817S1(C)(TU)-F by Everlight Electronics, the PC817C-S by UMW and the EL817(B)-F by Everlight Electronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the EL817?
82 boards in 62 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
PC817C
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DIP-4-55℃~+110℃ 1 1.2V 100mV@20mA,1mA 18us 18us 200mW 35V 50mA 5kV 60mA 6V DC Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSEverlight ElectronicsTransistor, Photovoltaic Output OptoisolatorsEL817S1(B)(TU)-F
SOP-4-2.54mm-55℃~+110℃ 1 1.2V 130% 260% 35V 3us 4us 50mA 5kV 9V Phototransistor SOP-4-2.54mm Transistor, Photovoltaic Output Optoisolators ROHSEverlight ElectronicsTransistor, Photovoltaic Output OptoisolatorsPC817X3CSP9F
SMD-4P-30℃~+100℃ 1 1.2V 200mV@20mA,1mA 200mW 3us 4us 50% 50mA 50mA 5kV 600% 6V 80V DC Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSSharp MicroelectronicsTransistor, Photovoltaic Output OptoisolatorsEL817(C)-F
DIP-4-55℃~+110℃ 1 1.2V 100mV@20mA,1mA 18us 18us 200% 35V 400% 50mA 5kV 6V Phototransistor DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSEverlight ElectronicsTransistor, Photovoltaic Output OptoisolatorsTLP785(GB-TP6,F
SMD-4P-55℃~+110℃ 1 1.15V 2us 3us 400mV@2.4mA,8mA 50% 50mA 5V 5kV 600% 80V Phototransistor SMD-4P Transistor, Photovoltaic Output Optoisolators ROHSToshibaTransistor, Photovoltaic Output Optoisolators