ShenZhen Royalighting Technology Co., Ltd

 

Features

High isolation 5000 VRMS

CTR flexibility available see order

 

Information

DC input with transistor output

Operating temperature range - 55 °C to 110 °C

REACH compliance

Halogen free

MSL class 1

 

ABSOLUTE MAXIMUM RATINGS
PARAMETER	SYMBOL	VALUE	UNIT	NOTE
INPUT
Forward Current	IF	60	mA	Â
Peak Forward Current	IFP	1	A	1
Reverse Voltage	VR	6	V	Â
Input Power Dissipation	PI	100	mW	Â
OUTPUT
Collector - Emitter Voltage	VCEO	35	V	Â
Emitter - Collector Volt	VECO	6	V	Â
Collector Current	IC	50	mA	Â
Output Power Dissipation	PO	150	mW	Â
COMMON
Total Power Dissipation	Ptot	200	mW	Â
Isolation Voltage	Viso	5000	Vrms	2
Operating Temperature	Topr	-55~110	°C	Â
Storage Temperature	Tstg	-55~125	°C	Â
Soldering Temperature	Tsol	260	°C	Â

 

ELECTRICAL OPTICAL CHARACTERISTICS at Ta=25°
PARAMETER		SYMBOL	MIN	TYP	MAX	UNIT	TEST CONDITION	NOTE
INPUT
Forward Voltage		VF	-	1.24	1.4	V	IF=10mA	Â
Reverse Current		IR	-	-	10	μA	VR=6V	Â
Input Capacitance		Cin	-	10	100	pF	V=0,f=1kHz	Â
OUTPUT
Collector Dark Current		ICEO	-	-	100	nA	VCE=10V,IF=0	Â
Collector-Emitter Breakdown Voltage		BVCEO	35	-	-	V	IC=0.1mA,IF=0	Â
Emitter-Collector Breakdown Voltage		BVECO	7	-	-	V	IE=0.1mA,IF=0	Â
TRANSFER CHATACTERISTICS
Current Transfer Ratio	TD817	CTR	50	-	600	%	IF=5mA,VCE=5V	Â
	TD817A		80	-	160	%		Â
	TD817B		130	-	260	%		Â
	TD817C		200	-	400	%		Â
	TD817D		300	-	600	%		Â
	TD817E		100	-	200	%		Â
Collector-Emitter Saturation Voltage		VCE(sat)	-	0.06	0.2	V	IF=20mA,IC=1mA	Â
Isolation Resistance		RISO	10^12	10^14	-	Ω	DC500V,40~60%R.H.	Â
Floating Capacitance		CIO	-	0.4	1	pF	V=0,f=1MHz	Â
Response Time(Rise)		tr	-	3	18	μs	VCE=2V,IC=10mA RL=100Ω	3
Response Time(Fall)		tr	-	4	18	μs		3
Cut-off Fraquency		fc	-	80	-	kHz	VCE=2V,IC=10mA RL=100Ω,-3dB	4

 

 

Switch mode power supplies

Programmable controllers

Household appliances

 

 

In terms of performance, it can replace Everlight EL817, Liteon LTV-817, Ctmicro CT817, Sharp PC817/120, Toshiba TLP521-1 AvagoHCPL-817, CosmoK1010, FairchildHHA817, Vishay K817P, The types of packaging are divided into SOP4 and DIP4, with CTR values of 80-160% for A level, 130-260% for B level, 200-400% for C level, and 300-600% for D level. They are widely used in power equipment to isolate high and low voltages. The related terminal product applications include home appliances, temperature control, air conditioning (HVAC), vending machines, lighting control devices, chargers, and swappable power supplies. The signal transmission between circuits, which completely isolates the front-end from the load, aims to increase safety, reduce circuit interference, and simplify circuit design.

 

 

SOP 4 Optocoupler

Package Dimensions (Dimensions in mm unless otherwise stated)

 

Recommended Solder Mask (Dimensions in mm unless otherwise stated) 

 

 

 

 

 

 

 

 

1.What is the function and working principle of 817 optocoupler?

The function of 817 optoelectronic coupling is to isolate and transmit signals, separating two circuits from different environments, and also serving as a connection. Its working principle is to supply power to the infrared emitting diode through a current limiting resistor for the first time to emit light, and the secondary photosensitive transistor receives the infrared conduction of the emitting diode, thereby playing a role of both isolation and signal transmission.

 

2.The difference between 4N25 optocoupler and 817 optocoupler?

"817 is a linear optocoupler, 4N25 is a nonlinear optocoupler, and the response speed is faster than 817 high, if used in digital circuits, it can replace 817, but the PCB packaging needs to be changed. If used in linear circuits, such as feedback from switching power supplies, it cannot be replaced."

 

3.817 The main parameters of the optical coupling include?

Input voltage: The input voltage range of the 817 optocoupler is usually several volts to tens of volts.

Output current: The output current capability of the 817 optocoupler is usually from tens to hundreds of milliamperes.

Isolation voltage: The isolation voltage capability of the 817 optocoupler can typically reach several thousand volts.

Response time: The response time of the 817 optocoupler is usually from a few nanoseconds to several tens of nanoseconds.

Working temperature: The working temperature range of the 817 optocoupler is usually from -40 ℃ to+120 ℃.

 

4.Differdifference between optocouplings 816 and 817?

The withstand voltage Vce0 of the TD817 output part is 35V, and the withstand voltage Vce0 of the TD816 output part is 70V

 

5.What is the role of triode optocouplings in communication equipment?

The transistor optocoupler is mainly used for signal isolation and transmission in communication equipment. The specific functions are as follows:02

(1). Signal isolation: In communication equipment, it is often necessary to isolate different electrical signals to prevent mutual interference. The transistor optocoupler uses optical signals to isolate electrical signals, ensuring the accuracy and stability of the signal.

Level conversion: In communication equipment, different signal transmission interfaces may require different level standards. The transistor optocoupler can achieve level conversion, converting signals from one level standard to signals from another level standard.

(2). High speed transmission: The transistor optocoupler has a high transmission speed, which can meet the needs of high-speed data transmission. In communication equipment, optocouplers can achieve isolation and transmission of high-speed data signals.

 

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