HMA2701R2V Equivalent & Substitute Parts

Part Overview

The HMA2701R2V is a 3.75kV isolation optoisolator with transistor output manufactured by onsemi in a 4-SMD package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across a -40°C to 100°C temperature range with a current transfer ratio between 50% and 300% at 5mA input current.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	50% @ 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
Mounting Type	Surface Mount
Package	4-SMD, Gull Wing

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Isolation Voltage: All substitutes must maintain 3750Vrms isolation
Output Type: Transistor output configuration required
Number of Channels: Single channel operation
Input Type: DC input
Mounting Type: Surface mount only
Current Transfer Ratio Range: Must encompass or overlap the 50%-300% specification at 5mA
Maximum Output Voltage and Current: Substitutes with higher ratings (80V, 50mA) are acceptable as they exceed minimum requirements
Vce Saturation: Lower values indicate improved performance; higher values remain compatible within specified limits
Operating Temperature: Extended ranges are acceptable; minimum range must cover -40°C to 100°C

Substitutes are grouped by manufacturer and package type. Direct pin-compatible alternatives in 4-SMD packages are primary candidates. Parts with different package geometries (4-SOIC, 4-Mini-Flat) require PCB layout modification but maintain electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Isolation (Vrms)	CTR Min @ 5mA	CTR Max @ 5mA	Vout Max (V)	Iout Max (mA)	Vce Sat Max (mV)	Temp Range (°C)	Package	Status
HMA2701R2V	onsemi	3750	50%	300%	40	80	300	-40 to 100	4-SMD	Obsolete
FODM2701R2	onsemi	3750	50%	300%	40	80	300	-40 to 110	4-SMD	Active
PS2701-1-F3-A	Renesas Electronics	3750	50%	300%	40	80	300	-55 to 100	4-SOP	Not For New Designs
HCPL-181-000E	Broadcom Limited	3750	50%	600%	80	50	200	-55 to 100	4-SOIC	Active
HCPL-181-00AE	Broadcom Limited	3750	80%	160%	80	50	200	-55 to 100	4-Mini-Flat	Active
HCPL-181-00BE	Broadcom Limited	3750	130%	260%	80	50	200	-55 to 100	4-Mini-Flat	Active
HCPL-181-00CE	Broadcom Limited	3750	200%	400%	80	50	200	-55 to 100	4-Mini-Flat	Active
HCPL-181-00DE	Broadcom Limited	3750	300%	600%	80	50	200	-55 to 100	4-Mini-Flat	Active
HCPL-181-060E	Broadcom Limited	3750	50%	600%	80	50	200	-55 to 100	4-Mini-Flat	Active
HCPL-181-06AE	Broadcom Limited	3750	80%	160%	80	50	200	-55 to 100	4-Mini-Flat	Active
HCPL-181-06BE	Broadcom Limited	3750	130%	260%	80	50	200	-55 to 100	4-Mini-Flat	Active

Engineering Selection Recommendations

Primary Substitute (Direct Replacement): FODM2701R2 from onsemi is the recommended primary substitute. It maintains identical electrical specifications to the HMA2701R2V, operates in the same 4-SMD package, and is currently in active production status. The extended operating temperature range (-40°C to 110°C) provides additional thermal margin. This part requires no design modifications.

Secondary Substitutes (Package Modification Required): The Broadcom HCPL-181 series offers multiple current transfer ratio grades in active production. These parts feature improved performance characteristics: higher maximum output voltage (80V vs 40V), lower Vce saturation (200mV vs 300mV), and extended temperature range (-55°C to 100°C). Substitution requires PCB layout changes due to different package geometries (4-SOIC or 4-Mini-Flat vs 4-SMD). Selection within the HCPL-181 series depends on required current transfer ratio:

HCPL-181-00AE or HCPL-181-06AE: 80%-160% CTR range
HCPL-181-00BE or HCPL-181-06BE: 130%-260% CTR range (closest match to original 50%-300%)
HCPL-181-00CE: 200%-400% CTR range
HCPL-181-00DE: 300%-600% CTR range
HCPL-181-000E or HCPL-181-060E: 50%-600% CTR range (widest specification)

Not Recommended for New Designs: PS2701-1-F3-A from Renesas Electronics is designated "Not For New Designs" and should be avoided for new development despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can FODM2701R2 directly replace HMA2701R2V without PCB changes? A: Yes. FODM2701R2 is pin-compatible and uses the same 4-SMD package. No PCB layout modifications are required.

Q: What is the difference between HCPL-181 variants (00AE, 00BE, 00CE, 00DE)? A: These variants differ in current transfer ratio (CTR) specifications at 5mA input current. The suffix indicates the CTR grade: 00AE (80%-160%), 00BE (130%-260%), 00CE (200%-400%), 00DE (300%-600%). Select based on your circuit's required CTR performance.

Q: Can I use HCPL-181 parts in place of HMA2701R2V? A: Electrically yes, but PCB layout modification is required. HCPL-181 parts use 4-SOIC or 4-Mini-Flat packages instead of 4-SMD. Verify pin assignments and footprint compatibility before design implementation.

Q: What is the difference between 4-Mini-Flat and 4-SOIC packages? A: Both are surface-mount packages with different physical dimensions and lead configurations. 4-Mini-Flat is more compact than 4-SOIC. Consult manufacturer datasheets for precise footprint specifications before PCB design.

Q: Are all substitutes RoHS3 compliant? A: FODM2701R2 and all Broadcom HCPL-181 variants are RoHS3 compliant. The original HMA2701R2V does not specify RoHS status.

Q: What is the temperature operating range difference between HMA2701R2V and substitutes? A: HMA2701R2V operates -40°C to 100°C. FODM2701R2 extends to 110°C. Broadcom HCPL-181 series extends to -55°C to 100°C, providing wider temperature coverage.

Q: Can I use a higher-rated part (80V output, 50mA current) in a circuit designed for 40V, 80mA? A: Higher voltage and current ratings are acceptable as they exceed minimum requirements. However, verify that your circuit design does not depend on the specific output impedance or saturation characteristics of the original part.

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