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HMA2701R2 Equivalent & Substitute Parts
Part Overview
The HMA2701R2 is a 3750Vrms optoisolator with transistor output manufactured by onsemi in a 4-SMD surface mount package. This component provides galvanic isolation for single-channel DC input applications with 80mA output current capability. The part is classified as obsolete, making equivalent substitutes necessary for new procurement and ongoing system support.
Substiute Parts
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 |
| Input Type | DC |
| Operating Temperature Range | -40°C to 100°C |
| Package Type | 4-SMD, Gull Wing |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitution eligibility for the HMA2701R2 is determined by the following critical parameters:
- Isolation voltage of 3750Vrms (all candidates match)
- Single channel configuration (all candidates match)
- Transistor output topology (all candidates match)
- DC input type (all candidates match)
- 4-SMD surface mount package (all candidates match)
- Current Transfer Ratio range compatibility (50% to 300% @ 5mA)
- Output current capability of 80mA minimum
- Maximum output voltage of 40V minimum
Substitute parts are grouped into two categories based on electrical performance and product status:
Category 1: Direct Functional Equivalents (onsemi FODM2701R2) Maintains identical electrical specifications with active product status and improved temperature range.
Category 2: Renesas PS2701 Series (Multiple Variants) Offers equivalent core functionality with active product status. Variants differ by Current Transfer Ratio binning (50%-150%, 100%-300%, 150%-300%).
Category 3: Lite-On LTV-357T Series (Multiple Variants) Provides equivalent isolation and switching performance with active product status. Variants differ by Current Transfer Ratio binning (50%-600%, 130%-260%) and reduced output current (50mA vs 80mA).
Parameter Comparison
| Parameter | HMA2701R2 | FODM2701R2 | PS2701-1-F3-A | PS2701-1-F3-H-A | PS2701-1-F3-L-A | PS2701-1-F3-M-A | PS2701-1-F3-P-A | PS2701-1-L-A | PS2701-1-M-A | LTV-357T | LTV-357T-B |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | Renesas | Renesas | Renesas | Renesas | Renesas | Renesas | Renesas | Lite-On | Lite-On |
| Isolation Voltage | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms | 3750Vrms |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Type | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor | Transistor |
| CTR Min @ 5mA | 50% | 50% | 50% | 50% | 100% | 50% | 150% | 100% | 50% | 50% | 130% |
| CTR Max @ 5mA | 300% | 300% | 300% | 300% | 300% | 150% | 300% | 300% | 150% | 600% | 260% |
| Max Output Voltage | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 35V | 35V |
| Max Output Current | 80mA | 80mA | 80mA | 80mA | 80mA | 80mA | 80mA | 80mA | 80mA | 50mA | 50mA |
| Vf (Typ) | 1.3V | 1.4V | 1.1V | 1.1V | 1.1V | 1.1V | 1.1V | 1.1V | 1.1V | 1.2V | 1.2V |
| Vce Saturation (Max) | 300mV | 300mV | 300mV | 300mV | 300mV | 300mV | 300mV | 300mV | 300mV | 200mV | 200mV |
| Operating Temperature | -40°C to 100°C | -40°C to 110°C | -55°C to 100°C | -55°C to 100°C | -55°C to 100°C | -55°C to 100°C | -55°C to 100°C | -55°C to 100°C | -55°C to 100°C | -55°C to 110°C | -55°C to 110°C |
| Product Status | Obsolete | Active | Not For New Designs | Active | Active | Active | Active | 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
Primary Substitute: FODM2701R2 (onsemi) The FODM2701R2 is the direct functional equivalent with active product status. It maintains identical electrical specifications to the HMA2701R2 while offering an extended operating temperature range (-40°C to 110°C). This part is ROHS3 compliant and available in high volume (1718 pcs in stock).
Secondary Substitutes: PS2701-1-F3-H-A, PS2701-1-F3-L-A, PS2701-1-F3-P-A (Renesas) These Renesas PS2701 variants provide equivalent core functionality with active product status and ROHS3 compliance. All three maintain the 80mA output current and 40V maximum output voltage required for HMA2701R2 replacement. Selection among these variants depends on Current Transfer Ratio requirements:
- PS2701-1-F3-L-A: 100%-300% CTR (widest upper range match)
- PS2701-1-F3-P-A: 150%-300% CTR (narrower lower range)
- PS2701-1-F3-H-A: 50%-300% CTR (full range match)
Tertiary Substitutes: PS2701-1-L-A, PS2701-1-M-A (Renesas) These strip-packaged variants offer equivalent isolation and switching performance with active product status. PS2701-1-L-A provides 100%-300% CTR while PS2701-1-M-A provides 50%-150% CTR. Both maintain 80mA output current capability.
Alternative Substitutes: LTV-357T, LTV-357T-B (Lite-On) The Lite-On LTV-357T series provides equivalent isolation voltage and switching topology with active product status and ROHS3 compliance. However, these parts have reduced maximum output current (50mA vs 80mA) and lower maximum output voltage (35V vs 40V). Use only when application requirements permit these reduced ratings. LTV-357T-B offers narrower CTR binning (130%-260%) compared to LTV-357T (50%-600%).
Frequently Asked Questions (FAQ)
Q: Can FODM2701R2 directly replace HMA2701R2 in existing designs? A: Yes. FODM2701R2 maintains identical electrical specifications and package type. The extended temperature range (-40°C to 110°C vs -40°C to 100°C) provides additional operational margin.
Q: What is the difference between PS2701-1-F3-H-A and PS2701-1-F3-L-A? A: Both are Renesas PS2701 variants with identical isolation voltage, output current, and output voltage ratings. The difference is Current Transfer Ratio binning: PS2701-1-F3-H-A spans 50%-300% while PS2701-1-F3-L-A spans 100%-300%. Select based on your circuit's CTR requirements.
Q: Why do LTV-357T variants show lower output current (50mA vs 80mA)? A: The LTV-357T series has a different internal design with maximum output current of 50mA. This is a fundamental electrical characteristic, not a packaging difference. Use LTV-357T only if your application requires 50mA or less.
Q: Are all substitute parts ROHS3 compliant? A: All active substitute parts listed are ROHS3 compliant. The original HMA2701R2 does not specify RoHS status due to its obsolete classification.
Q: What is the difference between strip and cut tape packaging for PS2701 variants? A: Strip packaging (PS2701-1-L-A, PS2701-1-M-A) and cut tape packaging (PS2701-1-F3-L-A, PS2701-1-F3-M-A) are different delivery formats for the same electrical component. Select based on your assembly process requirements.
Q: Can I use PS2701-1-F3-M-A if my circuit requires 300% maximum CTR? A: No. PS2701-1-F3-M-A has a maximum CTR of 150%, which does not meet the 300% requirement. Use PS2701-1-F3-H-A, PS2701-1-F3-L-A, or PS2701-1-F3-P-A instead.
Q: Is PS2701-1-F3-A suitable for new designs? A: PS2701-1-F3-A carries a "Not For New Designs" status. While electrically equivalent, Renesas recommends using PS2701-1-F3-H-A or other active variants for new development.
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