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EL817(S1)(TA)
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tape & Reel (TR)
- 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：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
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Overview
The EL817(S1)(TA) is a transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared emitting diode optically coupled to an NPN phototransistor in a single channel configuration. The device provides electrical isolation with a rated insulation voltage of 5000 Vrms. Key electrical parameters include a collector-emitter breakdown voltage of 35V, a maximum forward current of 60mA, and a collector current of 50mA. The unit weight is specified as 260 mg.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
- Features an NPN phototransistor output suitable for digital signal transmission applications.
Applications
- Industrial control systems requiring signal isolation
- Power supply feedback loops
- Communication equipment interface isolation
Procurement Notes
Verify component status carefully as the EL817(S1)(TA) is listed as obsolete or discontinued by major distributors such as Mouser. Confirm availability through alternative channels or authorized secondary markets if immediate procurement is required. Ensure that any sourced units match the original package and marking specifications to maintain circuit integrity.
Selection Notes
Select this component when a standard DIP-style transistor output optocoupler is needed for basic isolation tasks. Consider the 5000 Vrms isolation rating for safety compliance. Note that surface mount variants like the EL817S1(C)(TU) exist; ensure the through-hole DIP package matches the PCB design requirements before finalizing the selection.
Part Context
This part belongs to the EL817 series of optocouplers produced by Everlight Electronics. The series typically includes various packaging options such as DIP and SMD configurations. The EL817 family is widely recognized for general-purpose isolation in consumer and industrial electronics, offering a balance of performance and cost-effectiveness.
Replacement Considerations
Direct substitutes within the same series include EL817(S1)(TU). Verify pinout compatibility and isolation voltage ratings when considering cross-references from other manufacturers.
