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IL252-X017 Equivalent & Substitute Parts
Part Overview
The IL252-X017 is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation voltage in a single-channel configuration with 6-SMD surface mount packaging. The part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute components must maintain functional compatibility across isolation voltage, output type, channel configuration, and mounting specifications.
Substiute Parts
Key Parameters
| Parameter | IL252-X017 |
|---|---|
| Manufacturer | Vishay Semiconductor Opto Division |
| Category | Optoisolators |
| Number of Channels | 1 |
| Voltage - Isolation | 5300Vrms |
| Output Type | Transistor with Base |
| Voltage - Output (Max) | 30V |
| Input Type | AC, DC |
| Mounting Type | Surface Mount |
| Package / Case | 6-SMD, Gull Wing |
| Operating Temperature | -55°C ~ 100°C |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution for the IL252-X017 is determined by the following critical parameters:
- Isolation Voltage: The IL252-X017 specifies 5300Vrms isolation. Substitute parts must meet or exceed this isolation requirement to maintain electrical safety and circuit protection.
- Output Configuration: All substitutes must provide transistor with base output to ensure functional compatibility with existing circuit designs.
- Number of Channels: Single-channel configuration is mandatory.
- Mounting Type & Package: Surface mount with 6-SMD, Gull Wing package ensures mechanical and electrical compatibility with PCB layouts.
- Input Type: AC/DC input capability must be preserved.
- Operating Temperature Range: Substitutes must support the required thermal operating window.
Substitute parts are grouped into two categories based on isolation voltage specification:
Group A - Active Status (4170Vrms isolation): H11AA1SM, H11AA1SR2VM, H11AA4SM, H11AA4SR2VM, H11AA4SMT&R, H11AA1SMT&R. These parts provide lower isolation voltage (4170Vrms) compared to the original specification but remain functionally compatible for applications where this isolation level is acceptable.
Group B - Obsolete Status (7500Vpk isolation): H11AA2SM, H11AA3SM, H11AA2SMT&R, H11AA3SMT&R. These parts provide higher isolation voltage (7500Vpk) and are classified as obsolete, similar to the main part.
Parameter Comparison
| Parameter | IL252-X017 | H11AA1SM | H11AA1SR2VM | H11AA4SM | H11AA4SR2VM | H11AA1SMT&R | H11AA4SMT&R | H11AA2SM | H11AA3SM | H11AA2SMT&R | H11AA3SMT&R |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Vishay | onsemi | onsemi | onsemi | onsemi | Isocom | Isocom | onsemi | onsemi | Isocom | Isocom |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Isolation | 5300Vrms | 4170Vrms | 4170Vrms | 4170Vrms | 4170Vrms | 7.5Vpk | 7.5Vpk | 7500Vpk | 7500Vpk | 7.5Vpk | 7.5Vpk |
| Output Type | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base | Transistor with Base |
| Voltage - Output (Max) | 30V | 30V | 30V | 30V | 30V | 35V | 35V | 30V | 30V | 35V | 35V |
| Current - Output / Channel | Not specified | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA | 50mA |
| Input Type | AC, DC | AC, DC | AC, DC | AC, DC | AC, DC | AC, DC | AC, DC | AC, DC | AC, DC | AC, DC | AC, DC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing | 6-SMD, Gull Wing |
| Operating Temperature | -55°C ~ 100°C | -40°C ~ 100°C | -40°C ~ 100°C | -40°C ~ 100°C | -40°C ~ 100°C | -30°C ~ 100°C | -30°C ~ 100°C | -40°C ~ 100°C | -40°C ~ 100°C | -30°C ~ 100°C | -30°C ~ 100°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active | Obsolete | Obsolete | Active | Active |
Engineering Selection Recommendations
For new designs and production applications requiring IL252-X017 replacement, the following selection criteria apply:
Preferred Substitutes (Active Status): H11AA4SR2VM, H11AA4SM, H11AA1SR2VM, and H11AA1SM from onsemi are recommended as primary substitutes. These parts maintain active product status, ensuring long-term availability and manufacturing support. H11AA4SR2VM and H11AA4SM provide 100% current transfer ratio at 10mA, matching the original specification more closely than H11AA1 variants.
Packaging Consideration: H11AA4SR2VM and H11AA1SR2VM are supplied in Tape & Reel format, suitable for high-volume production. H11AA4SM and H11AA1SM are supplied in Tube packaging for lower-volume applications.
Isocom Alternatives (Active Status): H11AA4SMT&R and H11AA1SMT&R from Isocom Components provide active product status with Tape & Reel packaging. These parts specify 7.5Vpk isolation voltage, which differs from the original specification but maintains functional compatibility for the output stage.
Isolation Voltage Trade-off: Substitutes from onsemi (H11AA series) provide 4170Vrms isolation, which is lower than the IL252-X017 specification of 5300Vrms. This reduction is acceptable for applications where the lower isolation voltage meets circuit requirements. Isocom parts specify 7.5Vpk isolation, representing a different measurement standard.
Temperature Range Limitation: Substitute parts operate within -40°C to -30°C minimum temperature ranges, compared to the original -55°C specification. Applications requiring extended low-temperature operation below -40°C must evaluate alternative solutions.
Obsolete Alternatives: H11AA2SM, H11AA3SM, H11AA2SMT&R, and H11AA3SMT&R are classified as obsolete and should not be selected for new designs despite higher isolation voltage specifications.
Frequently Asked Questions (FAQ)
Q: Can H11AA1SM directly replace IL252-X017?
A: H11AA1SM is functionally compatible as a substitute. Both parts provide single-channel transistor with base output in 6-SMD, Gull Wing surface mount packaging with AC/DC input capability. The primary difference is isolation voltage: H11AA1SM specifies 4170Vrms compared to IL252-X017's 5300Vrms. This substitution is valid for applications where 4170Vrms isolation meets circuit requirements.
Q: What is the difference between H11AA4SR2VM and H11AA4SM?
A: Both parts are manufactured by onsemi with identical electrical specifications, including 4170Vrms isolation voltage and 100% current transfer ratio at 10mA. The primary difference is packaging: H11AA4SR2VM is supplied in Tape & Reel format for automated assembly, while H11AA4SM is supplied in Tube packaging for manual handling or lower-volume applications.
Q: Why do some substitutes specify 7.5Vpk isolation instead of Vrms?
A: Isocom Components parts (H11AA1SMT&R, H11AA4SMT&R, H11AA2SMT&R, H11AA3SMT&R) use peak voltage (Vpk) measurement for isolation specification, while Vishay and onsemi use RMS voltage (Vrms). These represent different measurement standards for the same electrical property. Both measurement methods are valid for component selection.
Q: Is H11AA2SM or H11AA3SM suitable for new designs?
A: No. Both H11AA2SM and H11AA3SM are classified as obsolete products. While they provide higher isolation voltage (7500Vpk), obsolete status indicates discontinued manufacturing and limited future availability. Active substitute parts such as H11AA4SR2VM or H11AA1SR2VM are recommended for new designs.
Q: What is the impact of the narrower operating temperature range in substitute parts?
A: Substitute parts operate from -40°C or -30°C minimum temperature, compared to IL252-X017's -55°C minimum. Applications requiring operation below -40°C must verify that substitute parts meet thermal requirements. For standard industrial applications operating above -40°C, this difference has no impact on component selection.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original IL252-X017 specification. This ensures compatibility with environmental and regulatory requirements for electronic component manufacturing and assembly.
Q: What packaging options are available for production?
A: Tape & Reel packaging is available from onsemi (H11AA4SR2VM, H11AA1SR2VM) and Isocom (H11AA4SMT&R, H11AA1SMT&R) for automated assembly. Tube packaging is available from onsemi (H11AA4SM, H11AA1SM) for manual handling or lower-volume production runs.
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