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EL817(M)
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-DIP
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：35V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：60 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Through Hole
- Package / Case：4-DIP (0.400", 10.16mm)
- Supplier Device Package：4-DIP
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Overview
The EL817(M) is a single-channel transistor output optocoupler from Everlight Electronics. It integrates an infrared emitting diode and an NPN phototransistor within a wide-lead DIP-4 package (0.4-inch spacing). Key electrical parameters include a maximum collector-emitter voltage of 35V, a maximum collector current of 50mA, and a high isolation voltage of 5000 Vrms between input and output. The device operates across a temperature range of -55°C to 110°C.
Feature Summary
- High isolation voltage capability between input and output circuits
- Wide-lead dual-in-line package design for enhanced clearance
- Compliance with major international safety standards including UL, VDE, and CSA
Applications
- General-purpose signal isolation in industrial control systems
- Switching power supply feedback loops
- Microcontroller input/output interfacing
Procurement Notes
Verify the specific suffix against the manufacturer datasheet to confirm lead spacing and compliance certifications. Ensure the ordered variant matches the required isolation voltage and package dimensions for your PCB layout. Cross-reference official documentation to validate RoHS status and approval numbers before finalizing procurement.
Selection Notes
Select this component when wide-lead spacing is required for improved creepage distance compared to standard DIP-4 packages. Consider the 35V collector-emitter voltage limit and 50mA current capacity for load requirements. Verify that the operating temperature range meets the environmental conditions of the target application.
Part Context
This part belongs to the EL817 series, which features an infrared LED coupled to a phototransistor. The 'M' designation specifically indicates the wide-lead version with 0.4-inch (10.16mm) pin spacing, distinguishing it from standard narrow-lead variants while maintaining identical internal electrical characteristics.
Replacement Considerations
Compatible substitutes include other EL817 series variants such as EL817C or EL817A, provided the wider lead pitch is accommodated by the circuit board. Generic PC817 equivalents may function electrically but require verification of isolation ratings and safety approvals.
