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Product Detailed Parameters
- Description：OPTOISO 5KV TRANS W/BASE 6-DIP
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：10% @ 10mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：2µs, 2µs
- Input Type：DC
- Output Type：Transistor with Base
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.3V
- Current - DC Forward (If) (Max)：60 mA
- Vce Saturation (Max)：500mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：6-DIP (0.300", 7.62mm)
- Supplier Device Package：6-DIP
- Grade：-
- Qualification：-
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Overview
The Vishay 4N28 is a single-channel transistor output optocoupler housed in a DIP-6 package. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a continuous collector current of 100 mA. The device provides 5000 Vrms insulation voltage and operates within a temperature range of -55°C to +100°C. Key electrical parameters include a minimum current transfer ratio of 30%, a forward current rating of 60 mA, and typical rise/fall times of 3 µs.
Feature Summary
- Provides galvanic isolation between input and output circuits via optical transmission
- Features an NPN phototransistor output for digital signal switching applications
- Designed for through-hole mounting in standard DIP-6 configurations
Applications
- General-purpose digital signal isolation
- Switching power supply feedback loops
- Microcontroller interface circuits
Procurement Notes
Verify the specific manufacturing date code and RoHS compliance status against the latest datasheet revision, as production statuses may vary. Confirm that the DIP-6 package dimensions match the target PCB footprint requirements. Ensure the selected component meets the required insulation voltage ratings for the intended safety isolation barriers in the final assembly design.
Selection Notes
Select this component when a standard NPN phototransistor output with moderate speed is required. The 5000 Vrms isolation rating suits general industrial applications. Consider alternative models if higher current transfer ratios or surface-mount packaging are necessary for the specific design constraints.
Part Context
The 4N28 belongs to the widely used 4N2x series of optocouplers from Vishay. This family is characterized by its reliability in basic isolation tasks. The component serves as a foundational element for separating low-voltage control logic from higher-voltage load circuits in various electronic systems.
Replacement Considerations
Direct pin-compatible substitutes within the same series include the 4N25, 4N26, 4N27, and 4N35. Verify current transfer ratio and saturation voltage specifications when substituting to ensure circuit performance remains within acceptable limits.
