HMA2701AV Equivalent & Substitute Parts

Part Overview

The HMA2701AV is a 3750Vrms optoisolator with transistor output manufactured by onsemi in a 4-SMD surface mount package. This component provides single-channel galvanic isolation for DC input applications with 80mA output current capability. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	150% @ 5mA
Current Transfer Ratio (Max)	300% @ 5mA
Maximum Output Voltage	40V
Maximum Output Current	80mA
Vce Saturation (Max)	300mV
Operating Temperature Range	-40°C to 100°C
Package Type	4-SMD, Gull Wing
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution for the HMA2701AV is determined by strict equivalence in the following electrical and mechanical parameters:

Isolation voltage: 3750Vrms (mandatory match)
Output type: Transistor (mandatory match)
Number of channels: 1 (mandatory match)
Current Transfer Ratio range: 150% to 300% @ 5mA (mandatory match)
Maximum output voltage: 40V (mandatory match)
Maximum output current: 80mA (mandatory match)
Vce saturation: 300mV (mandatory match)
Package: 4-SMD, Gull Wing surface mount (mandatory match)
Input type: DC (mandatory match)

Substitute parts are categorized as follows:

Upgrade Substitutes (Direct replacements with active product status and enhanced specifications):

PS2701-1-F3-P-A
PS2701-1-P-A
PS2701-1-V-F3-P-A

Similar Substitutes (Parts meeting core electrical requirements with variations in secondary parameters):

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

Parameter Comparison

Part Number	Manufacturer	Status	Isolation (Vrms)	CTR Min @ 5mA	CTR Max @ 5mA	Vout Max (V)	Iout Max (mA)	Vce Sat Max (mV)	Temp Range (°C)	RoHS
HMA2701AV	onsemi	Obsolete	3750	150%	300%	40	80	300	-40 to 100	N/A
PS2701-1-F3-P-A	Renesas	Active	3750	150%	300%	40	80	300	-55 to 100	ROHS3
PS2701-1-P-A	Renesas	Active	3750	150%	300%	40	80	300	-55 to 100	ROHS3
PS2701-1-V-F3-P-A	Renesas	Active	3750	150%	300%	40	80	300	-55 to 100	ROHS3
LTV-357T	Lite-On	Active	3750	50%	600%	35	50	200	-55 to 110	ROHS3
LTV-357T-B	Lite-On	Active	3750	130%	260%	35	50	200	-55 to 110	ROHS3
PS2701-1-F3-A	Renesas	Not For New Designs	3750	50%	300%	40	80	300	-55 to 100	ROHS3
PS2701-1-F3-H-A	Renesas	Active	3750	50%	300%	40	80	300	-55 to 100	ROHS3
PS2701-1-F3-L-A	Renesas	Active	3750	100%	300%	40	80	300	-55 to 100	ROHS3
PS2701-1-F3-M-A	Renesas	Active	3750	50%	150%	40	80	300	-55 to 100	ROHS3
PS2701-1-L-A	Renesas	Active	3750	100%	300%	40	80	300	-55 to 100	ROHS3

Engineering Selection Recommendations

Primary Upgrade Path: PS2701-1-F3-P-A, PS2701-1-P-A, and PS2701-1-V-F3-P-A are direct functional equivalents with active product status. These Renesas NEPOC series parts maintain identical electrical specifications to the HMA2701AV while offering extended lower temperature operation (-55°C vs -40°C) and ROHS3 compliance. Selection among these three variants depends on packaging and supply chain requirements.

Alternative Selections: PS2701-1-F3-H-A and PS2701-1-L-A provide identical electrical performance with active status and ROHS3 compliance. PS2701-1-F3-L-A and PS2701-1-L-A offer minimum CTR of 100% @ 5mA, providing tighter lower-bound specifications.

Not Recommended for New Designs: PS2701-1-F3-A carries "Not For New Designs" status despite meeting electrical requirements. LTV-357T and LTV-357T-B from Lite-On exhibit reduced output current (50mA vs 80mA) and lower maximum output voltage (35V vs 40V), making them unsuitable for applications requiring the full 80mA output capability of the HMA2701AV.

PS2701-1-F3-M-A has a reduced maximum CTR of 150% @ 5mA, limiting its applicability to designs requiring the full 300% upper specification.

Frequently Asked Questions (FAQ)

Q: Can LTV-357T replace HMA2701AV directly? A: No. While LTV-357T matches the 3750Vrms isolation and 4-SMD package, it has reduced maximum output current (50mA vs 80mA) and lower maximum output voltage (35V vs 40V). Use only if your application requires less than 50mA output current and operates below 35V.

Q: What is the difference between PS2701-1-F3-P-A and PS2701-1-P-A? A: Both are functionally equivalent with identical electrical specifications and active product status. The suffix variation indicates different packaging or tape configurations. Consult the supplier datasheet for specific packaging details.

Q: Why is PS2701-1-F3-A marked "Not For New Designs"? A: This designation indicates the manufacturer recommends against using this part in new product development. Although it meets the electrical requirements, PS2701-1-F3-H-A or PS2701-1-F3-L-A are preferred alternatives with active status.

Q: Does the extended temperature range of substitute parts (-55°C to 100°C vs -40°C to 100°C) affect compatibility? A: No. The extended lower temperature limit of substitute parts is a superset of the original specification and does not affect compatibility. Applications operating within -40°C to 100°C will function identically.

Q: Are all substitute parts ROHS3 compliant? A: All active substitute parts listed are ROHS3 compliant. The original HMA2701AV does not specify RoHS status due to its obsolete classification.

Q: What is the significance of Current Transfer Ratio (CTR) variations among substitutes? A: CTR defines the ratio of output current to input current. Parts with CTR Min of 150% match the original specification exactly. Parts with lower CTR Min (50% or 100%) have broader tolerance ranges but still encompass the original 150-300% specification. Parts with CTR Max of 150% (PS2701-1-F3-M-A) have a narrower upper range and should be used only if your circuit design accommodates this limitation.

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