
Overview
The HMHA281 is a transistor, Photovoltaic Output Optoisolator made by onsemi in a SOIC-4-175mil package with 4 pins. -55℃~+100℃ 1 1.3V 3.75kV 3us 3us@2mA,100Ω 400mV@2.4mA,8mA 50% 50mA 50mA 600% 6V 80V DC Phototransistor SOIC-4-175mil Transistor, Photovoltaic Output Optoisolators ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:VO615C-2X016, from EasyEDA) and its footprint (EasyEDA_Cloud:MFP-4_L4.4-W2.5-P1.27-LS6.8-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C274638).
Symbol
Footprint
Parameters
16- Current Transfer Ratio (CTR) Maximum/Saturation Value
- 600%
- Current Transfer Ratio (CTR) Minimum
- 50%
- Fall time
- 3us
- Forward Current(If)
- 50mA
- Input type
- DC
- Isolation Voltage(Vrms)
- 3.75kV
- Load Voltage
- 80V
- Number of Outputs
- 1
- Operating Temperature
- -55℃~+100℃
- Output Current
- 50mA
- Output Type
- Phototransistor
- Reverse Voltage
- 6V
- Rise time
- 3us@2mA,100Ω
- Total Power Dissipation(Pd)
- 210mW
- Vce Saturation(VCE(sat))
- 400mV@2.4mA,8mA
- Voltage - Forward(Vf)
- 1.3V
Order codes
1- HMHA281LCSC C274638
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | AN | Unspecified |
| 2 | CAT | Unspecified |
| 3 | EM | Unspecified |
| 4 | COL | Unspecified |
Show this part on your page
<iframe src="https://pcbkit.io/embed/parts/onsemi/HMHA281" title="HMHA281 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/onsemi/HMHA281.jpg" alt="HMHA281" width="1200" height="900">[](https://pcbkit.io/parts/onsemi/HMHA281)Questions
Is there a KiCad symbol and footprint for the HMHA281?
Yes. The symbol is EasyEDA_Cloud:VO615C-2X016 and the footprint EasyEDA_Cloud:MFP-4_L4.4-W2.5-P1.27-LS6.8-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the HMHA281?
SOIC-4-175mil, with 4 pins. Its footprint is drawn on this page.
Where is the HMHA281 datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the HMHA281?
JLCPCB lists it as part C274638, with 0 in stock; the sellers' links on this page open their listings.
What can replace the HMHA281?
Parts like it in the library: the HMHA2801B by onsemi, the HMHA2801AV by onsemi, the HMHA2801V by onsemi and the HMHA281R2V by onsemi. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Parts like it
6HMHA2801B
SO-4-175mil-55℃~+100℃ 1.3V 130% 210mW 260% 3.75kV 300mV@10mA,2mA 3us 3us 50mA 50mA 6V 80V DC Phototransistor SO-4-175mil Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsHMHA2801AV
SO-4-175mil-55℃~+100℃ 1 1.3V 160% 210mW 3.75kV 50mA 50mA 6V 80% 80V DC Phototransistor SO-4-175mil Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsHMHA2801V
SO-4-175mil-55℃~+100℃ 1.3V 210mW 3.75kV 50mA 50mA 600% 6V 80% 80V DC Phototransistor SO-4-175mil Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsHMHA281R2V
SOIC-4-175mil-55℃~+100℃ 1.3V 210mW 3.75kV 3us@2mA,100Ω 3us@2mA,100Ω 400mV@2.4mA,8mA 50% 50mA 50mA 600% 6V 80V DC Phototransistor SOIC-4-175mil Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsHMHA2801CR2
SOIC-4-175mil-55℃~+100℃ 1 1.3V 200% 210mW 3.75kV 300mV@10mA,2mA 3us 3us@2mA,100Ω 400% 50mA 50mA 6V 80V DC Phototransistor SOIC-4-175mil Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsHMHAA280V
SO-4-175milSO-4-175mil Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output Optoisolators