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ACPL-M43T-500 Equivalent & Substitute Parts
Part Overview
The ACPL-M43T-500 is a single-channel optoisolator with transistor output manufactured by Broadcom Limited, part of the R²Coupler™ series. This component provides 4000Vrms isolation voltage and is qualified to AEC-Q100 automotive standards. The device is actively produced and available in Tape & Reel packaging with 974 units in current inventory.
Substitute parts are necessary when the original ACPL-M43T-500 becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design flexibility permits selection from qualified equivalent components that meet the same electrical and mechanical requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Isolation Voltage | 4000Vrms |
| Number of Channels | 1 |
| Output Type | Transistor |
| Current Transfer Ratio (Min) | 32% @ 10mA |
| Current Transfer Ratio (Max) | 100% @ 10mA |
| Maximum Output Voltage | 20V |
| Output Current per Channel | 8mA |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | 6-SOIC (0.173", 4.40mm Width), 5 Leads |
| Mounting Type | Surface Mount |
| Grade | Automotive |
| Qualification | AEC-Q100 |
Substitute Part Grouping Explanation
Substitution eligibility for the ACPL-M43T-500 is determined by the following critical parameters:
Primary Substitution Criteria:
- Single channel configuration
- Transistor output topology
- Isolation voltage of 4000Vrms or higher
- Maximum output voltage of 20V or greater
- Output current capability of 8mA or greater
- Surface mount package with 5-lead configuration
- Operating temperature range that encompasses -40°C to 125°C
Secondary Considerations:
- Current transfer ratio performance at specified test conditions
- Input type (DC)
- Automotive grade and AEC-Q100 qualification status
- RoHS and REACH compliance status
- Packaging format (Tape & Reel, Cut Tape, Bulk, or Tube)
The ACPL-M43T-500E represents a parametric equivalent from the same manufacturer with identical electrical specifications but different packaging format. The onsemi FODM45x series and SHARP PC457L0 series provide functional substitutes with lower isolation voltage ratings (3750Vrms) but maintain compatibility across all other critical parameters. The Renesas PS8101-AX offers additional design flexibility with higher maximum output voltage (35V) but carries a "Not For New Designs" status.
Parameter Comparison
| Parameter | ACPL-M43T-500 | ACPL-M43T-500E | FODM452 / FODM453 | PC457L0NIP0F / PC457L0YIP0F | PS8101-AX |
|---|---|---|---|---|---|
| Manufacturer | Broadcom Limited | Broadcom Limited | onsemi | SHARP/Socle Technology | Renesas Electronics |
| Isolation Voltage | 4000Vrms | 4000Vrms | 3750Vrms | 3750Vrms | 3750Vrms |
| Number of Channels | 1 | 1 | 1 | 1 | 1 |
| Output Type | Transistor | Transistor | Transistor | Transistor | Transistor |
| Current Transfer Ratio (Min) | 32% @ 10mA | 32% @ 10mA | 20% @ 16mA | 19% @ 16mA | 15% @ 16mA |
| Current Transfer Ratio (Max) | 100% @ 10mA | 100% @ 10mA | 50% @ 16mA | 50% @ 16mA | 35% @ 16mA |
| Maximum Output Voltage | 20V | 20V | 20V | 20V | 35V |
| Output Current per Channel | 8mA | 8mA | 8mA | 8mA | 8mA |
| Input Forward Voltage (Typ) | 1.55V | 1.55V | 1.6V | 1.7V | 1.7V |
| Maximum DC Forward Current | 20mA | 20mA | 25mA | 25mA | 25mA |
| Turn On Time (Typ) | 150ns | 150ns | 400ns | 200ns | 500ns |
| Turn Off Time (Typ) | 500ns | 500ns | 350ns | 400ns | 600ns |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | -40°C to 85°C | -55°C to 85°C | -55°C to 100°C |
| Package / Case | 6-SOIC (0.173", 4.40mm Width), 5 Leads | 6-SOIC (0.173", 4.40mm Width), 5 Leads | 6-SOIC (0.173", 4.40mm Width), 5 Leads | 6-SOIC (0.173", 4.40mm Width), 5 Leads | 6-SOIC (0.173", 4.40mm Width), 5 Leads |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Grade | Automotive | Automotive | Not specified | Not specified | Not specified |
| Qualification | AEC-Q100 | AEC-Q100 | Not specified | Not specified | Not specified |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Not For New Designs |
Engineering Selection Recommendations
ACPL-M43T-500E (Broadcom Limited): This is the primary equivalent substitute. It maintains identical electrical specifications and automotive qualification (AEC-Q100) as the original ACPL-M43T-500. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and improved RoHS3 compliance. This part is recommended for direct substitution when packaging flexibility is acceptable. Inventory availability is significantly higher at 17,654 units.
FODM452, FODM452R2, FODM452R2V, FODM453, FODM453R2, FODM453R2V (onsemi): These parts provide functional substitution with 3750Vrms isolation voltage, which is 250Vrms lower than the original specification. All onsemi variants maintain the same output voltage (20V), output current (8mA), and surface mount package configuration. These parts are ROHS3 compliant and actively produced. Selection among FODM452 and FODM453 variants depends on packaging requirements (Bulk, Cut Tape, Tube, or Tape & Reel). The lower isolation voltage requires circuit-level evaluation to confirm adequacy for the intended application.
PC457L0NIP0F and PC457L0YIP0F (SHARP/Socle Technology): These OPIC™ series parts offer 3750Vrms isolation with faster turn-on time (200ns versus 150ns) and extended lower operating temperature limit (-55°C versus -40°C). Both variants are ROHS3 compliant and actively produced. Selection between NIP0F (Cut Tape & Digi-Reel®) and YIP0F (Tape & Reel) depends on manufacturing process requirements. Higher inventory availability (71,866 units for NIP0F) supports supply chain flexibility.
PS8101-AX (Renesas Electronics Corporation): This part carries a "Not For New Designs" status and should not be selected for new product development. While it provides 3750Vrms isolation and higher maximum output voltage (35V), its discontinued design status and lower current transfer ratio performance make it unsuitable for ongoing applications.
Frequently Asked Questions (FAQ)
Q: Can ACPL-M43T-500E be used as a direct drop-in replacement for ACPL-M43T-500?
A: Yes. The ACPL-M43T-500E is electrically and mechanically identical to the ACPL-M43T-500. Both share the same 4000Vrms isolation voltage, current transfer ratio specifications, output characteristics, and AEC-Q100 automotive qualification. The difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel) and RoHS3 compliance status. Pin configuration and package footprint are identical.
Q: What is the impact of using FODM452 or FODM453 instead of ACPL-M43T-500?
A: The primary difference is isolation voltage: FODM45x series provides 3750Vrms versus 4000Vrms for the original part. All other critical parameters—output voltage (20V), output current (8mA), transistor output topology, and surface mount package—remain compatible. The 250Vrms reduction in isolation voltage must be evaluated against circuit requirements and safety margins in the target application. Current transfer ratio performance is lower (20-50% @ 16mA versus 32-100% @ 10mA), which may affect circuit timing and signal integrity.
Q: Are there differences between FODM452 and FODM453?
A: FODM452 and FODM453 are electrically identical. The difference is packaging format only. FODM452 is available in Bulk and Cut Tape variants. FODM453 is available in Tube and Tape & Reel variants. Select based on manufacturing process requirements and inventory management preferences.
Q: How do PC457L0NIP0F and PC457L0YIP0F differ?
A: Both parts are electrically identical with 3750Vrms isolation and identical electrical performance. The difference is packaging format: NIP0F uses Cut Tape & Digi-Reel® packaging, while YIP0F uses Tape & Reel packaging. Selection depends on assembly line equipment compatibility and supply chain logistics.
Q: Why is PS8101-AX marked "Not For New Designs"?
A: The PS8101-AX carries a "Not For New Designs" status from Renesas Electronics, indicating the product line is in end-of-life phase. While the part remains available in inventory (14,668 units), it should not be selected for new product development. Existing designs using this part should plan migration to active alternatives such as ACPL-M43T-500E or onsemi FODM45x series.
Q: Can I use a substitute part with lower isolation voltage in a safety-critical automotive application?
A: Isolation voltage selection is determined by circuit design requirements, safety standards, and regulatory compliance. The 3750Vrms isolation of FODM45x and PC457L0 series is lower than the 4000Vrms of ACPL-M43T-500. Any substitution with reduced isolation voltage requires formal circuit analysis, safety assessment, and validation according to applicable automotive standards (ISO 26262, IEC 61508, or equivalent). This determination is outside the scope of component equivalency and must be made by the design engineering team.
Q: What packaging formats are available for each substitute part?
A: ACPL-M43T-500E is available in Cut Tape & Digi-Reel® format. FODM452 is available in Bulk and Cut Tape. FODM452R2 and FODM452R2V are available in Cut Tape & Digi-Reel®. FODM453 is available in Tube. FODM453R2 is available in Tape & Reel. FODM453R2V is available in Cut Tape & Digi-Reel®. PC457L0NIP0F is available in Cut Tape & Digi-Reel®. PC457L0YIP0F is available in Tape & Reel. Select based on assembly equipment compatibility and supply chain requirements.
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