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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：IS2805
- Mfr：Isocom Components 2004 LTD
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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)：18µs, 18µs
- 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-SOP
- Grade：-
- Qualification：-
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Overview
The IS2805 is a single-channel optocoupler featuring a transistor output configuration. It provides an isolation voltage of 3750Vrms, ensuring robust electrical separation between input and output circuits. The device supports a maximum forward current of 50 mA and guarantees a minimum current transfer ratio (CTR) of 20%. Packaged in a compact 4-pin SOP format, it is designed for reliable signal transmission in applications requiring high-voltage isolation.
Feature Summary
- Single-channel optical isolation with transistor output
- High dielectric strength for safe circuit separation
- Compact surface-mount packaging for space-constrained designs
Applications
- Industrial control systems
- Power supply protection circuits
- Signal isolation in automation equipment
Procurement Notes
Verify the specific suffix designation when ordering, as variants such as IS2805-4 indicate different channel counts or package types. Confirm RoHS compliance status and lead-free requirements with the supplier prior to purchase. Ensure the selected part matches the required isolation voltage and pin configuration for your specific PCB layout.
Selection Notes
Select this component when a single isolated channel with transistor output is sufficient for the application. Consider the 3750Vrms isolation rating for safety-critical interfaces. Evaluate the 50mA forward current limit against the driving circuit capabilities. Compare CTR specifications if precise gain control is necessary for the downstream logic level.
Part Context
Isocom Components manufactures this optocoupler as part of its general-purpose photovoltaic and transistor-output series. The brand specializes in infrared optoelectronic devices, often providing alternatives to discontinued industry-standard components. This specific model fits within their portfolio of high-reliability isolators for industrial and commercial markets.
Replacement Considerations
Cross-reference with standard 4-pin SOP optocouplers offering similar isolation ratings. Verify pinout compatibility before substitution. Check that replacement parts meet the same 3750Vrms isolation and 50mA forward current specifications to ensure circuit integrity.
