HMA2701AR3 Equivalent & Substitute Parts

Part Overview

The HMA2701AR3 is a single-channel optoisolator with transistor output manufactured by onsemi, rated for 3750Vrms isolation voltage. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and design updates. The part operates with a current transfer ratio of 150–300% at 5mA input and supports output currents up to 80mA with a maximum output voltage of 40V. Surface mount packaging in 4-SMD gull wing configuration enables integration into modern PCB designs.

Key Parameters

Parameter	Value
Manufacturer Part Number	HMA2701AR3
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	150% @ 5mA
Current Transfer Ratio (Max)	300% @ 5mA
Output Type	Transistor
Voltage - Output (Max)	40V
Current - Output / Channel	80mA
Vce Saturation (Max)	300mV
Operating Temperature	-40°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the HMA2701AR3 is determined by strict alignment of electrical and mechanical parameters. The following criteria define valid equivalents and substitutes:

Primary Substitution Criteria:

Voltage isolation rating: 3750Vrms (exact match required)
Number of channels: 1 (single channel)
Output type: Transistor
Maximum output voltage: 40V or greater
Maximum output current: 80mA or greater
Current transfer ratio range: Minimum 150% @ 5mA (or lower acceptable range)
Vce saturation: 300mV or lower
Package type: 4-SMD, Gull Wing surface mount
Input type: DC

Upgrade Substitutes meet or exceed all electrical parameters while offering active product status and improved compliance certifications. These parts are direct functional replacements with enhanced specifications.

Similar Substitutes maintain core isolation voltage and channel configuration but may have variations in current transfer ratio ranges, output current ratings, or saturation voltage. These parts require application-level verification of performance margins.

Parameter Comparison

Parameter	HMA2701AR3	PS2701-1-F3-P-A	PS2701-1-P-A	PS2701-1-V-F3-P-A	LTV-357T	LTV-357T-B	PS2701-1-F3-A	PS2701-1-F3-H-A	PS2701-1-F3-L-A	PS2701-1-F3-M-A	PS2701-1-L-A
Manufacturer	onsemi	Renesas	Renesas	Renesas	Lite-On	Lite-On	Renesas	Renesas	Renesas	Renesas	Renesas
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms	3750Vrms
Current Transfer Ratio (Min)	150% @ 5mA	150% @ 5mA	150% @ 5mA	150% @ 5mA	50% @ 5mA	130% @ 5mA	50% @ 5mA	50% @ 5mA	100% @ 5mA	50% @ 5mA	100% @ 5mA
Current Transfer Ratio (Max)	300% @ 5mA	300% @ 5mA	300% @ 5mA	300% @ 5mA	600% @ 5mA	260% @ 5mA	300% @ 5mA	300% @ 5mA	300% @ 5mA	150% @ 5mA	300% @ 5mA
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	40V	40V	40V	40V	35V	35V	40V	40V	40V	40V	40V
Current - Output / Channel	80mA	80mA	80mA	80mA	50mA	50mA	80mA	80mA	80mA	80mA	80mA
Vce Saturation (Max)	300mV	300mV	300mV	300mV	200mV	200mV	300mV	300mV	300mV	300mV	300mV
Operating Temperature	-40°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Product Status	Obsolete	Active	Active	Active	Active	Active	Not For New Designs	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Upgrade Substitutes (Recommended for New Designs):

PS2701-1-F3-P-A, PS2701-1-P-A, and PS2701-1-V-F3-P-A are manufactured by Renesas Electronics Corporation and carry active product status. These parts maintain identical electrical specifications to the HMA2701AR3 while offering ROHS3 compliance and extended operating temperature range (-55°C to 100°C). All three parts are suitable for direct replacement in existing designs and recommended for new production.

Similar Substitutes (Application-Dependent Selection):

LTV-357T and LTV-357T-B (Lite-On Inc.) maintain 3750Vrms isolation and single-channel transistor output but feature reduced maximum output current (50mA versus 80mA) and lower maximum output voltage (35V versus 40V). These parts are appropriate only for applications where output current requirements do not exceed 50mA and output voltage remains below 35V.

PS2701-1-F3-A carries "Not For New Designs" status and should be used only for legacy system maintenance or repair applications where design continuity is required.

PS2701-1-F3-H-A, PS2701-1-F3-L-A, PS2701-1-F3-M-A, and PS2701-1-L-A are active Renesas parts with ROHS3 compliance. These variants differ in current transfer ratio specifications and should be selected based on specific circuit gain requirements. PS2701-1-F3-M-A features the most restrictive current transfer ratio range (50–150% @ 5mA) and is suitable only for applications tolerant of lower gain margins.

Frequently Asked Questions (FAQ)

Q: Can PS2701-1-F3-P-A directly replace HMA2701AR3 in existing PCB designs?

A: Yes. PS2701-1-F3-P-A maintains identical isolation voltage (3750Vrms), output voltage rating (40V), output current rating (80mA), and Vce saturation specification (300mV). The 4-SMD gull wing package is mechanically compatible. Active product status and ROHS3 compliance make this the preferred upgrade path.

Q: What is the difference between PS2701-1-P-A and PS2701-1-V-F3-P-A?

A: Both parts are electrically identical with matching isolation voltage, current transfer ratio, output ratings, and operating temperature range. The primary difference is REACH compliance status: PS2701-1-P-A is REACH Affected, while PS2701-1-V-F3-P-A is REACH Unaffected. Selection depends on supply chain and regulatory requirements for your application region.

Q: Why do LTV-357T variants show lower output current ratings?

A: LTV-357T and LTV-357T-B are rated for maximum output current of 50mA, compared to 80mA for the HMA2701AR3 and Renesas PS2701 series. These parts are suitable only for applications where output current does not exceed 50mA. Exceeding this rating may result in device damage or performance degradation.

Q: Is PS2701-1-F3-A suitable for new production?

A: No. PS2701-1-F3-A carries "Not For New Designs" status and should be used only for repair or maintenance of existing systems. For new production, select PS2701-1-F3-P-A, PS2701-1-P-A, or PS2701-1-V-F3-P-A.

Q: What does current transfer ratio range mean for substitution?

A: Current transfer ratio (CTR) defines the ratio of output collector current to input LED current. The HMA2701AR3 specifies 150–300% CTR at 5mA input. Substitute parts with lower minimum CTR (such as 50% or 100%) may exhibit different circuit gain characteristics. Applications with tight gain tolerance requirements should select substitutes with matching or higher minimum CTR specifications.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance certification. The original HMA2701AR3 does not specify RoHS status. ROHS3 compliance ensures restriction of hazardous substances and is required for many modern supply chains and end-market applications.

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