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EL3H7(D)(EA)-VG
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SSOP
- Series：-
- Mfr：Everlight Electronics Co Ltd
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：300% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：5µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SOIC (0.173", 4.40mm Width)
- Supplier Device Package：4-SSOP
- Grade：-
- Qualification：-
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Overview
The EL3H7(D)(EA)-VG is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It integrates an infrared LED emitter with an NPN phototransistor detector within a compact 4-pin SSOP package. The device provides electrical isolation between input and output circuits with a rated isolation voltage of 3750 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 80V, a continuous output current of 50mA, and a typical forward voltage of 1.2V at the input. The Current Transfer Ratio (CTR) ranges from 300% to 600% when tested at a forward current of 5mA. It operates reliably across a wide temperature range from -55°C to +110°C.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using optical transmission.
- Features a compact surface-mount 4-pin SSOP package suitable for space-constrained designs.
- Delivers high current transfer efficiency with CTR values up to 600% at low drive currents.
Applications
- Digital logic signal transmission and level shifting
- Power supply control and switching circuits
- Electrical insulation between system components
Procurement Notes
Verify the specific suffix EA against the manufacturer datasheet to confirm pin configuration and packaging type. Ensure the selected variant matches the required isolation voltage and operating temperature range for the target application. Cross-reference the part number with official Everlight documentation to avoid confusion with similar series members that may have different electrical characteristics or physical dimensions.
Selection Notes
Select this component when high isolation voltage and fast response are not the primary constraints, but cost-effective digital isolation is needed. The NPN phototransistor output requires appropriate pull-up resistor selection to match the load voltage. Consider the thermal management requirements given the wide operating temperature range and the power dissipation capabilities of the SSOP package in dense PCB layouts.
Part Context
This device belongs to the EL3H7-G series of transistor output optocouplers. The series is designed for general-purpose digital isolation applications. The specific model utilizes a standard pinout compatible with common SOIC/SSOP footprints, facilitating easy integration into existing circuit designs without significant layout modifications.
Replacement Considerations
Direct replacements must maintain the 3750 Vrms isolation rating and NPN phototransistor output type. Verify compatibility of the 4-pin SSOP footprint and pin assignments. Alternative parts should offer similar CTR ranges and operating temperatures to ensure circuit performance parity.
