HMHA281R3

Description：OPTOISO 3.75KV TRANS 4-MINI-FLAT
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)

SKU:e8bc6b3fe66c Category: Transistor, Photovoltaic Output Optoisolators Brand: onsemi

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Product introduction

HMHA281R3 is listed in the Transistor, Photovoltaic Output Optoisolators range at ChipApex. The manufacturer field lists onsemi. Its product description is OPTOISO 3.75KV TRANS 4-MINI-FLAT. Review the specifications below when checking this part for your BOM.

Transistor, Photovoltaic Output Optoisolators specifications for HMHA281R3

Description：OPTOISO 3.75KV TRANS 4-MINI-FLAT
Series：-
Mfr：onsemi
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)：3µs, 3µs
Input Type：DC
Output Type：Transistor
Voltage - Output (Max)：80V
Current - Output / Channel：50mA
Voltage - Forward (Vf) (Typ)：1.3V (Max)
Current - DC Forward (If) (Max)：50 mA
Vce Saturation (Max)：400mV
Operating Temperature：-55°C ~ 100°C
Mounting Type：Surface Mount
Package / Case：4-SOIC (0.173", 4.40mm Width)
Supplier Device Package：4-Mini-Flat

Transistor, Photovoltaic Output Optoisolators datasheet and documents for HMHA281R3

HMHA281R3

Transistor, Photovoltaic Output Optoisolators Overview

The HMHA281R3 is a single-channel phototransistor output optocoupler manufactured by onsemi. It features a 4-Mini-Flat surface-mount package with a 4.40mm width. The device provides an isolation voltage of 3750Vrms and supports a maximum collector-emitter voltage of 80V. It operates within a temperature range of -55°C to 100°C. Key electrical parameters include a forward current of 50mA, a forward voltage of 1.3V, and a collector current of 50mA. The typical rise and fall times are both 3µs, with a saturation voltage of 400mV.

Transistor, Photovoltaic Output Optoisolators Feature Summary

Provides high-voltage galvanic isolation between input and output circuits
Utilizes a compact surface-mount Mini-Flat package for space-constrained designs
Features fast switching speeds suitable for digital signal transmission

Transistor, Photovoltaic Output Optoisolators Applications

Industrial communication interfaces requiring signal isolation
Microcontroller input/output isolation in embedded systems
Power supply feedback loops for noise immunity

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix R3 indicates tape-and-reel packaging when sourcing. Confirm the component status as discontinued or active through official onsemi channels prior to finalizing design-in decisions. Ensure compatibility with standard reflow soldering profiles for the Mini-Flat package type during assembly planning.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a small footprint and high isolation voltage are required for single-channel applications. Compare the 3750Vrms rating against system safety standards. Evaluate the 3µs switching speed against data rate requirements. Consider the operating temperature range for environmental suitability in harsh industrial settings.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HMHA series of miniature optocouplers from onsemi. The series is designed for applications demanding high reliability and small form factors. The HMHA281 variant serves as the base model for this family, offering standardized performance metrics for general-purpose isolation tasks.