

Overview
The HMHA2801A is a transistor, Photovoltaic Output Optoisolator made by onsemi in a SOP-4-1.27mm package with 4 pins. -55℃~+100℃ 1 1.3V 160% 210mW 3.75kV 3us 3us 400mV@8mA,2.4mA 50mA 50mA 6V 80% 80V DC Phototransistor SOP-4-1.27mm Transistor, Photovoltaic Output Optoisolators ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:OR-1009, from EasyEDA) and its footprint (EasyEDA_Cloud:SOP-4_L4.4-W2.4-P1.27-LS7.0-TL, from EasyEDA), ready for a KiCad board. 3,558 are in stock at JLCPCB (part C258256). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
16- Current Transfer Ratio (CTR) Maximum/Saturation Value
- 160%
- Current Transfer Ratio (CTR) Minimum
- 80%
- 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
- Total Power Dissipation(Pd)
- 210mW
- Vce Saturation(VCE(sat))
- 400mV@8mA,2.4mA
- Voltage - Forward(Vf)
- 1.3V
Order codes
1- HMHA2801ALCSC C258256
Pinout
4| Pin | Name | Type |
|---|---|---|
| 1 | A | Unspecified |
| 2 | C | Unspecified |
| 3 | E | Unspecified |
| 4 | C | Unspecified |
Open-source boards using it
All 2- 2 layers100 × 102 mm

- 4 layers36.5 × 36.5 mm

Feeder
owntech-foundation/Feeder
This repository contains the design files relative to Low Side Synchronous Buck Power converter.
54 parts
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Is there a KiCad symbol and footprint for the HMHA2801A?
Yes. The symbol is EasyEDA_Cloud:OR-1009 and the footprint EasyEDA_Cloud:SOP-4_L4.4-W2.4-P1.27-LS7.0-TL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the HMHA2801A?
SOP-4-1.27mm, with 4 pins. Its footprint is drawn on this page.
Where is the HMHA2801A datasheet?
onsemi publishes it: the Datasheet link on this page opens it.
Where can I order the HMHA2801A?
JLCPCB lists it as part C258256, with 3,558 in stock; the sellers' links on this page open their listings.
What can replace the HMHA2801A?
Parts like it in the library: the CTH214A(T1) by CT Micro International, the CTH217B(T1) by CT Micro International, the CTH217C(V)(T1) by CT Micro International and the CTH217B(V)(T1) by CT Micro International. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the HMHA2801A?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
4CTH214A(T1)
SOP-4-1.27mm-55℃~+110℃ 1 1.24V 150% 200mW 3.75kV 40mV@20mA,1mA 50% 50mA 50mA 80V 8us 9.8us AC,DC Phototransistor SOP-4-1.27mm Transistor, Photovoltaic Output Optoisolators ROHSCT Micro InternationalTransistor, Photovoltaic Output OptoisolatorsCTH217B(T1)
SOP-4-1.27mm-55℃~+125℃ 1.24V 100mV@20mA,1mA 130% 200mW 260% 3.75kV 50mA 50mA 6V 80V 8us 9us DC Phototransistor SOP-4-1.27mm Transistor, Photovoltaic Output Optoisolators ROHSCT Micro InternationalTransistor, Photovoltaic Output OptoisolatorsCTH217C(V)(T1)
SOP-4-1.27mm-55℃~+125℃ 1.24V 100mV@20mA,1mA 200% 200mW 3.75kV 400% 50mA 50mA 6V 80V 8us 9us DC Phototransistor SOP-4-1.27mm Transistor, Photovoltaic Output Optoisolators ROHSCT Micro InternationalTransistor, Photovoltaic Output OptoisolatorsCTH217B(V)(T1)
SOP-4-1.27mm-55℃~+125℃ 1.24V 100mV@20mA,1mA 130% 200mW 260% 3.75kV 50mA 50mA 6V 80V 8us 9us DC Phototransistor SOP-4-1.27mm Transistor, Photovoltaic Output Optoisolators ROHSCT Micro InternationalTransistor, Photovoltaic Output Optoisolators