how many volts does the led part of it take? and what resistors to use from a 3.3v source to make it work at max?

The spec. sheet says 20ma at 1.2 volts typically. I used it with a Arduino off a standard GPIO and used a 2.2Kohm resistor. That should work in most situations. Obviously it you don't get conduction on the other side you might lower that resistance but not to exceed 20ma.

Will this drive a 12 vdc coil on a relay that draws 150mA? What's themax current it will drive?

No. The max collector current is only 50mA.

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BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)

BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)

Product ID: 241012665

Details

Brand
BOJACK
Color
Black
Contact Type
Spst
Current Rating
50 Milliamps
Voltage
5 Volts

⚡5000V isolation voltage

📦Pack of 50 with resealable box

🔌50mA max collector current

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Description

⚡ Elevate your circuits with BOJACK PC817 — where power meets precision!

PRECISION PIN PITCH - Standard 2.54mm DIP-4 layout for seamless integration with breadboards and PCBs.
COMPACT CONVENIENT - 50 pieces in a durable resealable box—perfect for continuous prototyping and production.
HIGH CURRENT HANDLING - Supports up to 50mA collector current for reliable performance in demanding circuits.
VERSATILE APPLICATION READY - Ideal for SCR systems, measuring instruments, photocopiers, and smart home appliances.
UNMATCHED ELECTRICAL ISOLATION - 5000V isolation voltage ensures rock-solid signal integrity and device protection.

The BOJACK PC817 is a high-performance 4-pin DIP phototransistor optocoupler delivering 5000V isolation voltage and up to 50mA collector current. Packaged in a convenient 50-piece resealable box, it’s engineered for seamless integration in computer terminals, SCR equipment, and smart appliances, ensuring reliable signal isolation and efficient power handling across a wide temperature range.

Specifications

ASIN	B08CXRHDHP
Best Sellers Rank	#38,457 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Optocouplers
Brand Name	BOJACK
Circuit Type	4-Way
Color	Black
Compatible Devices	Computer terminals, SCR system equipment, measuring instruments, photocopiers, automatic ticketing, household appliances
Connector Type Used on Cable	Pin
Contact Type	Spst
Control Method	App
Control Type	Automatic
Current Rating	50 Milliamps
Customer Reviews	4.7 4.7 out of 5 stars (144)
Manufacturer	BOJACK
Material Type	Plastic
Number of Positions	4
Operating Voltage	5 Volts (DC)
Operation Mode	Automatic
Part Number	BJ-PC-817
Switch Type	Dip
Terminal	Physical
UPC	759838089656
Unit Count	50.0 Count
Voltage	5 Volts
Wattage	200 Milliwatts

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TrustScore 4.5 | 7,300+ reviews

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Great price for an authentic product. Fast international shipping too!

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95 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Romania.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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