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HCPL-M452#500 Equivalent & Substitute Parts
Part Overview
The HCPL-M452#500 is a single-channel optoisolator with transistor output manufactured by Broadcom Limited, designed for 3750Vrms isolation applications. This component provides galvanic isolation in DC input circuits with transistor-based output switching. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Isolation Voltage | 3750Vrms |
| Number of Channels | 1 |
| Output Type | Transistor |
| Input Type | DC |
| Current Transfer Ratio (Min) | 20% @ 16mA |
| Current Transfer Ratio (Max) | 50% @ 16mA |
| Maximum Output Voltage | 20V |
| Output Current per Channel | 8mA |
| Operating Temperature Range | -55°C to 100°C |
| Package Type | 6-SOIC (0.173", 4.40mm Width), 5 Leads |
| Mounting Type | Surface Mount |
Substitute Part Grouping Explanation
Substitute parts for the HCPL-M452#500 are classified based on electrical parameter compatibility and product availability status. The primary substitution criteria are:
Critical Parameters for Substitution:
- Isolation voltage: 3750Vrms (all substitutes match)
- Single channel configuration (all substitutes match)
- Transistor output topology (all substitutes match)
- DC input type (all substitutes match)
- Current transfer ratio range: 20–50% @ 16mA (all substitutes within or overlap this range)
- Output current capability: 8mA (all substitutes match)
- Package compatibility: 6-SOIC form factor with 5 leads (all substitutes match)
Parametric Equivalents (Broadcom Limited): HCPL-M452-500E and HCPL-M453 series maintain identical electrical specifications and are direct functional replacements with improved availability and compliance status.
Upgrade Options (onsemi FODM series): Provide equivalent isolation and switching performance with extended inventory availability. Minor variations in turn-on/turn-off timing (400ns/350ns vs. 200ns/600ns) and forward voltage (1.6V vs. 1.5V) are within acceptable tolerance for most applications.
Manufacturer-Recommended Alternatives (Everlight and Renesas): Offer equivalent isolation and switching characteristics with different thermal and compliance profiles. Renesas PS8101-F3-AX provides higher maximum output voltage (35V vs. 20V) and extended temperature range (-55°C to 100°C).
Parameter Comparison
| Part Number | Manufacturer | Isolation (Vrms) | CTR Min @ 16mA | CTR Max @ 16mA | Vout Max (V) | Iout (mA) | Vf Typ (V) | Temp Range (°C) | Package | Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|---|
| HCPL-M452#500 | Broadcom | 3750 | 20% | 50% | 20 | 8 | 1.5 | -55 to 100 | 6-SOIC | Discontinued | Non-compliant |
| HCPL-M452-500E | Broadcom | 3750 | 20% | 50% | 20 | 8 | 1.5 | -55 to 100 | 6-SOIC | Active | ROHS3 |
| HCPL-M453#500 | Broadcom | 3750 | 20% | 50% | 20 | 8 | 1.5 | -55 to 100 | 6-SOIC | Active | Non-compliant |
| HCPL-M453-500E | Broadcom | 3750 | 20% | 50% | 20 | 8 | 1.5 | -55 to 100 | 6-SOIC | Active | ROHS3 |
| FODM452 | onsemi | 3750 | 20% | 50% | 20 | 8 | 1.6 | -40 to 85 | 6-SOIC | Active | ROHS3 |
| FODM452R2 | onsemi | 3750 | 20% | 50% | 20 | 8 | 1.6 | -40 to 85 | 6-SOIC | Active | ROHS3 |
| FODM452R2V | onsemi | 3750 | 20% | 50% | 20 | 8 | 1.6 | -40 to 85 | 6-SOIC | Active | ROHS3 |
| FODM452V | onsemi | 3750 | 20% | 50% | 20 | 8 | 1.6 | -40 to 85 | 6-SOIC | Active | ROHS3 |
| ELM452(TA)-V | Everlight | 3750 | 20% | 50% | 20 | 8 | 1.45 | -40 to 85 | 6-SOIC | Active | ROHS3 |
| ELM453(TA)-V | Everlight | 3750 | 20% | 50% | 20 | 8 | 1.45 | -40 to 85 | 6-SOIC | Active | ROHS3 |
| PS8101-F3-AX | Renesas | 3750 | 15% | 35% | 35 | 8 | 1.7 | -55 to 100 | 6-SOIC | Active | ROHS3 |
Engineering Selection Recommendations
Direct Replacement (Broadcom HCPL-M452-500E): This part provides identical electrical specifications to the original HCPL-M452#500 with active product status and ROHS3 compliance. It is the preferred substitute for applications requiring no design modification.
Broadcom HCPL-M453 Series: The HCPL-M453#500 and HCPL-M453-500E offer equivalent performance with the latter providing ROHS3 compliance and superior inventory availability (64,999 units in stock). Both maintain the original operating temperature range and electrical characteristics.
onsemi FODM Series (FODM452, FODM452R2, FODM452R2V, FODM452V): These parts deliver equivalent isolation and switching performance with ROHS3 compliance and extensive inventory. The reduced operating temperature range (-40°C to 85°C versus -55°C to 100°C) requires thermal evaluation for applications at temperature extremes. All FODM variants are available in multiple packaging formats (Bulk, Cut Tape, Tube).
Everlight ELM Series (ELM452(TA)-V, ELM453(TA)-V): These manufacturer-recommended alternatives provide equivalent electrical performance with ROHS3 compliance and active status. The reduced operating temperature range applies similarly to onsemi options.
Renesas PS8101-F3-AX: This option extends maximum output voltage to 35V and maintains the original -55°C to 100°C temperature range. The lower current transfer ratio range (15–35% versus 20–50%) requires circuit validation for applications dependent on higher CTR values. This part is suitable for designs requiring higher output voltage capability.
Frequently Asked Questions (FAQ)
Q: Can HCPL-M452-500E be used as a direct drop-in replacement for HCPL-M452#500?
A: Yes. The HCPL-M452-500E maintains identical electrical specifications, package configuration, and pin assignment. No circuit modification is required. The primary difference is active product status and ROHS3 compliance.
Q: What is the difference between HCPL-M453#500 and HCPL-M452#500?
A: Both parts share identical electrical specifications and package form factor. The designation difference reflects internal design variants within the Broadcom product line. Both are functionally equivalent for circuit applications.
Q: Are onsemi FODM452 variants interchangeable with Broadcom HCPL-M452#500?
A: Electrical substitution is valid for applications operating within -40°C to 85°C. Applications requiring the full -55°C to 100°C range must use Broadcom or Renesas alternatives. All FODM variants (FODM452, FODM452R2, FODM452R2V, FODM452V) are electrically identical; packaging format selection depends on procurement requirements.
Q: Why does Renesas PS8101-F3-AX have different current transfer ratio specifications?
A: The PS8101-F3-AX is specified with 15–35% CTR at 16mA, which overlaps the lower portion of the original 20–50% range. Circuit designs relying on CTR values above 35% require performance validation with this part.
Q: What is the advantage of PS8101-F3-AX over other substitutes?
A: The PS8101-F3-AX provides maximum output voltage of 35V compared to 20V in other options, enabling use in higher voltage switching applications. It also maintains the original -55°C to 100°C operating range.
Q: Are all substitute parts ROHS3 compliant?
A: All active substitute parts listed (HCPL-M452-500E, HCPL-M453-500E, FODM series, Everlight ELM series, and Renesas PS8101-F3-AX) are ROHS3 compliant. The original HCPL-M452#500 and HCPL-M453#500 are non-compliant.
Q: Which substitute offers the highest inventory availability?
A: HCPL-M453-500E provides the highest stock level at 64,999 units, followed by FODM452R2 at 33,400 units.
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