HMAA2705R3

Description：OPTOISO 3.75KV 1CH TRANS 4-SMD
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)

SKU:2bf33abe1fed Category: Transistor, Photovoltaic Output Optoisolators Brand: onsemi

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Product introduction

HMAA2705R3 is listed in the Transistor, Photovoltaic Output Optoisolators range at ChipApex. The manufacturer field lists onsemi. Its product description is OPTOISO 3.75KV 1CH TRANS 4-SMD. Review the specifications below when checking this part for your BOM.

Transistor, Photovoltaic Output Optoisolators specifications for HMAA2705R3

Description：OPTOISO 3.75KV 1CH TRANS 4-SMD
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)
Number of Channels：1
Voltage - Isolation：3750Vrms
Current Transfer Ratio (Min)：50% @ 5mA
Current Transfer Ratio (Max)：300% @ 5mA
Turn On / Turn Off Time (Typ)：-
Rise / Fall Time (Typ)：3µs, 3µs
Input Type：AC, DC
Output Type：Transistor
Voltage - Output (Max)：40V
Current - Output / Channel：80mA
Voltage - Forward (Vf) (Typ)：1.3V (Max)
Current - DC Forward (If) (Max)：50 mA
Vce Saturation (Max)：300mV
Operating Temperature：-40°C ~ 100°C
Mounting Type：Surface Mount
Package / Case：4-SMD, Gull Wing
Supplier Device Package：4-SMD

Transistor, Photovoltaic Output Optoisolators datasheet and documents for HMAA2705R3

HMAA2705R3

Transistor, Photovoltaic Output Optoisolators Overview

The HMAA2705R3 is a single-channel transistor output optocoupler manufactured by onsemi. It features two gallium arsenide infrared emitting diodes connected in inverse parallel to drive a silicon phototransistor, enabling AC input capability. The device provides 3750 Vrms isolation voltage and operates within a temperature range of -40°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 40V, a maximum collector current of 80mA, and a forward current of 50mA. The Current Transfer Ratio ranges from 50% to 300%, with typical rise and fall times of 3µs. It is housed in a compact 4-SMD Mini-Flat package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

Dual inverse-parallel infrared LEDs enable direct AC signal input without external rectification.

Transistor, Photovoltaic Output Optoisolators Applications

AC mains sensing circuits
Solid-state relay driver interfaces
Microcontroller isolation for AC loads

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify component status as the HMAA2705R3 is listed as obsolete or discontinued by major distributors. Confirm availability of alternative packages or updated series revisions from onsemi before finalizing design specifications. Ensure sourcing channels provide valid traceability documentation for legacy components.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when AC input detection is required in a compact surface-mount form factor. The dual-diode configuration simplifies circuit design by eliminating external rectifiers. Verify that the 80mA output current capacity meets load requirements and that the 3750 Vrms isolation rating satisfies safety standards for the target application environment.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the HMA2705 series, which utilizes a 4-pin mini-flat package with a 2.54mm lead pitch. The series is designed for space-constrained applications requiring high isolation voltage. The HMAA variant specifically denotes the dual-diode AC-input configuration within the broader HMA family of transistor-output optocouplers.