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Product Detailed Parameters
- Description：OPTOISO 2.5KV TRANS W/BASE 6-SMD
- Series：4N2X
- Mfr：Lite-On Inc.
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：2500Vrms
- Current Transfer Ratio (Min)：20% @ 10mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：3µs, 3µs
- Input Type：DC
- Output Type：Transistor with Base
- Voltage - Output (Max)：30V
- Current - Output / Channel：100mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：80 mA
- Vce Saturation (Max)：500mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：6-SMD, Gull Wing
- Supplier Device Package：6-SMD
- Grade：-
- Qualification：-
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Overview
The Lite-On 4N25S is a single-channel optocoupler featuring a DC input and a phototransistor output with an accessible base. It utilizes a 6-pin PDIP surface-mount package. Key electrical parameters include a maximum forward voltage of 1.5V, a minimum current transfer ratio of 20%, and an isolation voltage of 2500Vrms. The device supports a maximum input current of 80mA, with typical rise and fall times of 3μs each. It operates within a temperature range of -55°C to 100°C.
Feature Summary
- Provides effective switching and signal coupling between input and output circuits while maintaining electrical isolation.
- Features a phototransistor output that allows access to the transistor base for enhanced circuit control.
Applications
- Signal coupling in electronic circuits
- Switching applications requiring galvanic isolation
Procurement Notes
Verify the specific ordering suffix (e.g., TA1) against official Lite-On documentation to confirm packaging details such as tape and reel configuration. Ensure the selected variant meets all required safety certifications including UL, VDE, CSA, CQC, DEMKO, FIMKO, TUV, and cUL before finalizing procurement specifications.
Selection Notes
Select this component when a single-channel isolation solution with a phototransistor output and accessible base is required. Consider the 3μs switching speed and 2500Vrms isolation rating for appropriate application compatibility. Verify that the 6-pin SMD form factor fits the target PCB layout constraints.
Part Context
This device belongs to the 4N25 series of optocouplers manufactured by Lite-On Technology Corporation. It is designed for general-purpose isolation tasks, offering a compact surface-mount footprint compared to traditional through-hole variants while maintaining similar electrical performance characteristics.
Replacement Considerations
Consult official Lite-On substitution guides for verified equivalents. Generic replacements may differ in current transfer ratio or isolation voltage ratings.
FAQ
What is the typical switching speed of the 4N25S?
The typical rise time and fall time are both 3μs.
Does the 4N25S provide access to the phototransistor base?
Yes, the 6-pin package design allows access to the photo-transistor base.
