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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-37V53
5.5KΩ ON-Resistance Photocell (CdS) Output Optocoupler
The NSL-37V53 is an optocoupler that has an OFF-resistance of 1MΩ.
■Typical Applications:
● Industrial
● Audio Compressors
● Electrical Noise Filter
■Features
● Compact Moisture Resistant Package
● Low LED Current
●Passive Resistance Output
●Low Distortion
■Absolute Maximum Rating:
| Parameter | Symbol | Min | Max | Unit |
| Isolation Voltage | V_ISO | - | 2500 | V |
| Operating Temperature | T_OP | -40 | +75 | °C |
| Storage Temperature | T_STG | -40 | +75 | °C |
| Package | Plastic | |||
*0.118 inch from base for 3seconds with heat sink
■Typical Electro-optical characteristics rating (Ta=25 ℃ unless otherwise noted)
| Parameter | Test Conditions | Symbol | Min | Typ | Max | Unit |
| LED | ||||||
| Forward Current | - | I_F | - | - | 40 | mA |
| Forward Voltage | I_f=20mA | V_F | - | - | 2.5 | V |
| Reverse Voltage | - | V_R | - | - | 3.0 | V |
| PHOTOCELL | ||||||
| Maximum Photocell Voltage | Peak AC or DC | V_C | - | - | 100 | V |
| Power Dissipation¹ | - | P_D | - | - | 175 | mW |
| COUPLED | ||||||
| On-Resistance | I_f=1mA | R_on | - | 5.5 | - | KΩ |
| I_f=10mA | R_on | - | 800 | - | Ω | |
| I_f=40mA | R_on | - | 200 | 500 | Ω | |
| Off Resistance | 10 sec after I_f=0mA | R_off | 1 | - | - | MΩ |
| Rise Time² | Time to 63% of final conductance @ I_F=10mA | T_R | - | 3.5 | - | msec |
| Decay Time | Time to 100KΩ from removal of I_f=10mA | T_F | - | - | 500 | msec |
| ¹Derate linearly to 0 at 75° C | ||||||
| ²The Rise Time, T_R, is the time required for the dark to light change in conductance to reach 63% of its final value | ||||||
■Typical Mechanical Specifications
Units are in [mm] The product has tolerances.
■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.
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