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EL817(S)(C)(TD)
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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)：200% @ 5mA
- Current Transfer Ratio (Max)：400% @ 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(S)(C)(TD) is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an infrared emitting diode optically coupled to an NPN phototransistor detector. The device provides high isolation voltage of 5000 Vrms between input and output, with a creepage distance exceeding 7.62 mm. Key electrical parameters include a maximum collector-emitter voltage of 35 V, a maximum forward current of 60 mA, and a typical rise/fall time of 4 µs/3 µs. It operates within a temperature range of -55 °C to +110 °C and is housed in a 4-SMD gull wing package.
Feature Summary
- High isolation voltage capability of 5000 Vrms for reliable signal transmission across isolated circuits
- Compact surface mount design with a small outline package suitable for space-constrained applications
- Wide operating temperature range extending up to +110 °C for robust performance in varied environments
Applications
- Signal isolation in microprocessor systems
- Switching power supply feedback loops
- Solid-state relay (SSR) driver circuits
Procurement Notes
Verify the specific suffix configuration against the manufacturer's datasheet to ensure compatibility with required isolation standards and packaging type. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary by region and production batch.
Selection Notes
Select this component when surface mount assembly is required for optocoupler applications needing 5000 Vrms isolation. Ensure the circuit design accommodates the 35 V collector-emitter voltage limit and the specified current transfer ratio range at the intended operating current.
Part Context
This part belongs to the EL817 series, which includes various DIP and SMD variants. The (S) indicates surface mount, (C) denotes the CTR grade, and (TD) specifies the tape and reel packaging format. It shares core electrical characteristics with through-hole equivalents but differs in physical footprint and mounting method.
Replacement Considerations
Direct pin-compatible replacements include other EL817 SMD variants such as EL817(S)(B)(TD) or EL817(S)(D)(TD), provided their specific Current Transfer Ratio (CTR) grades match the application requirements.
