Optocouplers (Photocell (CdS) Output)
The CdS photocell output optocouplers optically couple an LED to a CdS Light Dependent Resistor (LDR). The LDR resistance increases when the LED current is OFF and decreases when LED current is ON. The device showcases a large dynamic range with a response time that efficiently mimics the human eye's sensitivity to light changes. Engineered with High, Medium, and Low dark resistances, the optocouplers are available with diverse resistance values to suit various applications. The photocells are encased in an opticallyisolated structures.

Type No.: NSL-26
This optocoupler consists of an LED input optically coupled to a TO-5 Hermetic photocell. The photocell resistance is high when the LED current is "off" and low resistance when the LED current is "on".
■Typical Applications:
■Features
■Absolute Maximum Rating:
| SYMBOL | PARAMETER | MIN | MAX | UNITS |
|---|---|---|---|---|
| Viso | Isolation Voltage | 2000 | V | |
| Top | Operating Temperature | -40 | +75 | °C |
| Tstg | Storage Temperature | -40 | +75 | °C |
| TS | Soldering Temperature (2) | +260 | °C |
■Typical Electro-optical characteristics rating (Ta=25 ℃ unless otherwise noted)
Contact us for recommendations on specific test conditions and procedures.
| SYMBOL | CHARACTERISTIC | TEST CONDITIONS | MIN | TYP | MAX | UNITS |
|---|---|---|---|---|---|---|
| LED | ||||||
| IF | Forward Current | 40 | mA | |||
| VF | Forward Voltage | IF= 16 mA | 2.0 | V | ||
| VR | Reverse Current | V<sub>R</sub> = 4V | 3.0 | µA | ||
| Cell | ||||||
| VC | Maximum Cell Voltage | (Peak AC or DC) | 120 | V | ||
| PD | Power Dissipation | 200 | mW | |||
| Coupled | ||||||
| RON | On Resistance | IF=16 mA | 2 | KΩ | ||
| ROFF | Off Resistance | 10 sec after LED "OFF", 5V dc on cell. | 10 | MΩ | ||
| TR | Rise Time | Time to 63% of final conductance @ IF=16 mA (3) | 3.5 | msec | ||
| TF | Decay Time | Time to 100 KΩ after removal of IF=16 mA | 20 | msec | ||
| TCE | Cell Temp. Coefficient | IF > 5 mA | 0.7 | %/°C | ||
Note:
(1) Derate 1.0 mW/°C above 25°C ambient
(2) >2 mm from case for <5 sec.
(3) The Rise Time, TR is the time required for the dark to
light change in conductance to reach 63% of its final
value.
(4) Print “NSL-26 “ and date code “YYWW”.
Units are in inches [mm]

■General Care and Handling Instructions
Handling and Storage
• Handle Optocouplers and LEDs gently to prevent damage.
• Avoid exposing the devices to temperatures exceeding the storage temperature rating of the device.
• Maintain a non-condensing environment for optimum performance and lifetime.
Cleaning
• For plastic molded devices, cleaning with a 50/50 mixture of Methanol and isopropyl alcohol is recommended. Cleaning in an ultrasonic bath is generally not recommended.
Special Considerations
• Avoid exposing plastic molded devices or epoxy glob topdevices to harsh chemicals like THINNERS, ACETONE, andTRICHLOROETHYLENE.
■NOTICE:
This PDF catalog is downloaded from the website of Shen Zhen Long Xin Da Technology Co., Ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our sales representatives or product engineers before ordering.
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
•This product is non-environmentally friendly products do not meet the EU RoHS directive..
• EU RoHS is "the European Directive 2002/95/EC on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment".
• For more details, please refer to our website for EU RoHS'
■Legal Disclaimer
Information in this data sheet is believed to be correct and reliable. However, no responsibility is assumed for possible inaccuracies or omission. Specifications are subject to change without notice.
Plsease input value
Error E-mail format
Plsease input value