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EL3H7(B)(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)：130% @ 5mA
- Current Transfer Ratio (Max)：260% @ 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(B)(TB)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics Co Ltd. It features an infrared emitting diode optically coupled to an NPN phototransistor detector, encapsulated in green compound within a 4-SOIC package (0.173 inch width). The device provides high isolation with a rated insulation voltage of 3750 Vrms. It supports a wide operating temperature range from -55°C to +110°C. Key electrical parameters include a collector-emitter saturation voltage of 200 mV maximum and a forward voltage of 1.2 V typical. The unit weight is specified as 260 mg.
Feature Summary
- Provides galvanic isolation between input and output circuits using optical coupling technology.
- Features an NPN phototransistor detector for reliable signal transmission.
- Encapsulated in green compound for enhanced durability and environmental resistance.
Applications
- Industrial control systems requiring signal isolation
- Consumer electronics with safety isolation requirements
- Communication equipment interfacing
Procurement Notes
Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required packaging and performance specifications. Confirm RoHS compliance status through current documentation. Check availability constraints as supply conditions may vary by region. Ensure the selected variant matches the intended thermal and electrical design parameters for the application.
Selection Notes
Select this component based on the need for high-voltage isolation and surface-mount convenience. Consider the CTR range and switching characteristics relative to the load requirements. Verify that the SOIC-4 footprint aligns with the PCB layout constraints. Evaluate the operating temperature range suitability for the expected environmental conditions during deployment.
Part Context
This part belongs to the EL3H7-G series of transistor output optocouplers. The series is designed for general-purpose isolation applications. The specific model indicates a particular binning or packaging variation within the broader family. It shares core architectural similarities with other variants in the lineup while differing in specific electrical tolerances or physical packaging formats.
Replacement Considerations
Cross-reference with EL3H7(A)-G or EL3H7(C)(TB)-VG for alternative options if pinout or electrical parameters differ significantly. Verify functional equivalence regarding isolation voltage and current transfer ratio before substitution.
