Specification	HMHA281R2

Current - DC Forward (If) (Max)	50 mA
Current - Output / Channel	50 mA
Current Transfer Ratio (Max) [Max]	600 %
Current Transfer Ratio (Min) [Min]	50 %
Input Type	DC
Mounting Type	Surface Mount
Number of Channels	1
Operating Temperature [Max]	100 °C
Operating Temperature [Min]	-55 °C
Output Type	1.81 mOhm
Package / Case	4-SOIC
Package / Case [x]	0.173 in
Package / Case [y]	4.4 mm
Rise / Fall Time (Typ) [custom]	3 µs
Rise / Fall Time (Typ) [custom]	3 µs
Supplier Device Package	4-Mini-Flat
Vce Saturation (Max) [Max]	400 mV
Voltage - Forward (Vf) (Typ)	1.3 V
Voltage - Isolation	3750 Vrms

HMHA281 Series

4-Pin Half-Pitch Mini-Flat Phototransistor Optocouplers

Part	Package / Case [y]	Package / Case	Package / Case [x]	Vce Saturation (Max) [Max]	Input Type	Current - Output / Channel	Voltage - Isolation	Current Transfer Ratio (Max) [Max]	Supplier Device Package	Mounting Type	Current - DC Forward (If) (Max)	Voltage - Forward (Vf) (Typ)	Output Type	Current Transfer Ratio (Min) [Min]	Rise / Fall Time (Typ) [custom]	Rise / Fall Time (Typ) [custom]	Number of Channels	Operating Temperature [Max]	Operating Temperature [Min]
ON Semiconductor HMHA281R2	4.4 mm	4-SOIC	0.173 in	400 mV	DC	50 mA	3750 Vrms	600 %	4-Mini-Flat	Surface Mount	50 mA	1.3 V	1.81 mOhm	50 %	3 µs	3 µs	1	100 °C	-55 °C

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 0.73
		10	$ 0.48
		100	$ 0.31
		1000	$ 0.25
	Digi-Reel®	1	$ 0.73
		10	$ 0.48
		100	$ 0.31
		1000	$ 0.25
	Tape & Reel (TR)	2500	$ 0.23
		5000	$ 0.22
		12500	$ 0.22
		25000	$ 0.21
Newark	Each (Supplied on Full Reel)	1	$ 0.28
		3000	$ 0.27
		6000	$ 0.25
		12000	$ 0.24
		18000	$ 0.22
		30000	$ 0.21
ON Semiconductor	N/A	1	$ 0.22

Description

General part information

HMHA281 Series

(Not recommend for new design. The new equivalent part number is FODM217x)The HMHA281 and HMHA2801 series devices consist of a gallium arsenide infrared emitting diode driving a silicon phototransistor in a compact 4-pin mini-flat package. The lead pitch is 1.27 mm.