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EL3H4(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)：20% @ 1mA
- Current Transfer Ratio (Max)：300% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：6µs, 8µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 100°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 EL3H4(TB)-G is a single-channel phototransistor output optoisolator manufactured by Everlight Electronics. It provides electrical isolation with a rated isolation voltage of 3750Vrms. The device features a surface-mount 4-SSOP package (4.40mm width) and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a maximum collector-emitter saturation voltage of 200mV, a forward voltage of 1.2V, and a maximum forward current of 50mA. The output transistor supports a maximum voltage of 80V.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Utilizes a compact surface-mount SSOP-4 package for automated assembly
- Designed for AC and DC input signal transmission
Applications
- General-purpose signal isolation in industrial control systems
- Interface circuits for microcontrollers and logic devices
- Power supply feedback loops requiring galvanic isolation
Procurement Notes
Verify the specific suffix designation against the manufacturer's latest datasheet to confirm pinout compatibility and performance specifications. Ensure the ordering code matches the required package variant and compliance standards. Cross-reference part numbers with official Everlight documentation to avoid substitution errors due to minor suffix variations that may affect mechanical or electrical characteristics.
Selection Notes
Select this component when a single-channel phototransistor output is required for moderate-speed signal isolation. Consider the 3750Vrms isolation rating for safety requirements and the -55°C to +100°C operating range for environmental suitability. Evaluate the 4-SSOP footprint against available PCB space constraints and ensure the 50mA forward current capability meets the LED drive requirements of the application circuit.
Part Context
This component belongs to the EL3H4 series of phototransistor output optocouplers from Everlight Electronics. The series is characterized by its small form factor and reliability for general-purpose isolation tasks. Variants within the series share similar core electrical characteristics but may differ in packaging dimensions, lead finish, or specific testing criteria as defined by their unique suffix codes.
Replacement Considerations
Compatible substitutes include EL3H4(A)(TB)-G and EL3H4-G, provided they maintain identical pin configurations and electrical ratings. Verify that alternative parts offer equivalent isolation voltage and operating temperature ranges before implementation.
