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EL3H7(C)(TB)-G
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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)：200% @ 5mA
- Current Transfer Ratio (Max)：400% @ 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(C)(TB)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an infrared emitting diode optically coupled to an NPN phototransistor detector, encapsulated in a green compound within a 4-pin SSOP package with a 2mm body width. The device provides an isolation voltage of 3750 Vrms and supports a maximum DC forward current of 50 mA. It operates within a temperature range of -55°C to 110°C. Key electrical parameters include a typical forward voltage of 1.2 V, a maximum collector-emitter saturation voltage of 200 mV, and a current transfer ratio ranging from 200% to 400% at a forward current of 5 mA.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using optical coupling technology.
- Features a compact surface-mount SSOP package designed for automated assembly and space-constrained applications.
- Utilizes an NPN phototransistor detector for reliable signal transmission with defined current transfer characteristics.
Applications
- Industrial control systems requiring galvanic isolation
- Signal isolation in microcontroller interfaces
- Power supply feedback loops
Procurement Notes
Verify the specific suffix (C)(TB)-G against the manufacturer's latest datasheet to confirm the exact Current Transfer Ratio bin and packaging type. Ensure the procurement source provides official documentation confirming RoHS compliance and the active lifecycle status. Cross-reference the 4-SSOP footprint dimensions with your PCB design library to guarantee mechanical compatibility during assembly.
Selection Notes
Select this component when a single channel of isolation with moderate speed and high CTR is required. The 3750 Vrms rating suits applications needing robust barrier protection. Compare the 200-400% CTR range against system gain requirements. Consider the SSOP package constraints versus alternative SOIC or DIP packages if board space allows for larger footprints.
Part Context
This part belongs to the EL3H7-G series of transistor output optocouplers from Everlight Electronics. The series offers various CTR bins and packaging options, including tube and reel configurations. The EL3H7-C variant specifically denotes a defined current transfer ratio range, distinguishing it from other performance grades within the same family.
Replacement Considerations
Check for direct substitutes within the EL3H7-G series that share the 4-SSOP package and similar CTR specifications. Verify pinout compatibility and isolation voltage ratings before substituting with components from other manufacturers.
