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EL357NB(TB)-G
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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- 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)：3µs, 4µs
- 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-SMD, Gull Wing
- Supplier Device Package：4-SOP (2.54mm)
- Grade：-
- Qualification：-
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Overview
The EL357NB(TB)-G is a single-channel transistor output optocoupler manufactured by Everlight Electronics. It features an NPN phototransistor output and utilizes a compact SOP-4 surface-mount package with a 2mm body width. The device provides electrical isolation with a rated insulation voltage of 3750 Vrms. Key electrical parameters include a maximum forward current of 50 mA, a collector-emitter saturation voltage of 0.4 V, and a collector cutoff current of 1 nA. The unit operates within a temperature range of -55°C to +110°C and has a power dissipation rating of 200 mW.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using infrared LED technology.
- Features a compact SOP-4 surface-mount package designed for space-constrained PCB layouts.
- Utilizes an NPN phototransistor output configuration for digital signal transmission.
Applications
- Industrial control systems requiring circuit isolation
- Communication equipment signal interfacing
- Consumer electronics power management circuits
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix designation matches project requirements. Check current lifecycle status as availability may vary. Ensure compliance with relevant regional regulatory standards before integration into final products.
Selection Notes
Select this component when small form factor and high isolation voltage are primary constraints. Consider the NPN output type for compatible logic interfaces. Evaluate thermal management capabilities given the 200 mW dissipation limit. Compare against alternative packages if board space allows for larger footprints.
Part Context
This part belongs to the EL357N series of ultra-small SOP phototransistor optocouplers from Everlight. The series is characterized by its narrow profile and robust isolation capabilities. Variants within the family differ primarily in packaging style and tape/reel specifications while maintaining core electrical performance metrics.
Replacement Considerations
Direct substitutes include EL357N(B)(TA)-G and EL357N(E)(TA)-G. Verify pinout compatibility and parameter equivalence before substitution. Note that some variants may have different lifecycle statuses.
