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EL3H7(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)：50% @ 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(EA)-VG is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an NPN phototransistor output and provides an isolation voltage of 3750 Vrms. The device operates within a temperature range of -55°C to +110°C. It is available in a 4-SSOP surface-mount package. Current Transfer Ratio (CTR) specifications vary by suffix, with the base model typically offering 80-160% CTR at 5mA forward current.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits
- Utilizes an NPN phototransistor for digital signal transmission
- Designed for surface-mount assembly in compact form factors
Applications
- Industrial control systems requiring galvanic isolation
- Consumer appliances with microcontroller interfaces
- Power supply feedback loops
Procurement Notes
Verify the specific Current Transfer Ratio (CTR) bin required for your application, as suffixes like (EA), (EB), or (EC) denote different gain ranges. Confirm the package type matches your PCB footprint, as variations exist between SSOP and SOIC styles. Ensure the operating temperature range meets your environmental constraints before finalizing the order.
Selection Notes
Select this component when a single channel of isolation is sufficient for the circuit design. Consider the CTR requirements carefully; higher CTR bins may be needed for driving heavier loads or ensuring robust switching speeds. Verify that the 3750 Vrms isolation rating exceeds the system's peak transient voltage requirements to ensure safety compliance.
Part Context
This part belongs to the EL3H7 series of ultra-small phototransistor optocouplers. The series is characterized by its compact 4-pin packaging, which facilitates high-density board layouts. It serves as a cost-effective solution for basic isolation tasks where high bandwidth is not the primary requirement.
Replacement Considerations
Direct replacements include other EL3H7 variants with matching CTR bins, such as EL3H7(B)(EA)-VG or EL3H7(C)(EA)-VG, provided the isolation voltage and package dimensions are identical. Cross-brand equivalents require verification of pinout compatibility and insulation clearance distances.
