IL252-X017T Equivalent & Substitute Parts

Part Overview

The IL252-X017T is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation in a 6-SMD surface mount package and is designed for AC/DC input applications with transistor output capability. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Substiute Parts

IL252-X017T

Vishay Semiconductor Opto DivisionIn Stock: 4216IL252-X017T Datasheet

Current PartRFQ

H11AA1SR2VM

onsemiIn Stock: 2253H11AA1SR2VM Datasheet

MFR RecommendedRFQ

H11AA4SR2VM

onsemiIn Stock: 17239H11AA4SR2VM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the IL252-X017T is based on the following critical parameters:

• Package compatibility: 6-SMD, Gull Wing surface mount configuration
• Functional equivalence: Single-channel optoisolator with transistor output and base connection
• Input capability: AC/DC input support
• Output specifications: 30V maximum output voltage, 400mV Vce saturation
• Isolation voltage: Minimum 4170Vrms (lower than original 5300Vrms but within acceptable range for most applications)
• Current transfer ratio: Minimum 20% or 100% @ 10mA depending on variant
• Compliance: ROHS3 compliant, MSL 1 rating
• Thermal range: Operating temperature -40°C to 100°C (narrower than original -55°C to 100°C)

The onsemi H11AA series parts meet these substitution criteria while maintaining active product status and full compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

H11AA4SR2VM is the primary substitute for IL252-X017T. This part maintains identical current transfer ratio performance (100% @ 10mA) and meets all functional and compliance requirements. The H11AA4SR2VM is in active production status with ROHS3 compliance and REACH unaffected designation, ensuring long-term availability and regulatory compliance.

H11AA1SR2VM serves as an alternative substitute where lower current transfer ratio (20% @ 10mA) is acceptable for the application. This variant also maintains active product status and full compliance certifications.

Both onsemi substitutes operate within the -40°C to 100°C temperature range, which is narrower than the original IL252-X017T specification of -55°C to 100°C. Applications requiring operation below -40°C require design review.

The isolation voltage reduction from 5300Vrms to 4170Vrms must be evaluated against specific application requirements. Both substitutes maintain identical output voltage (30V max), saturation characteristics (400mV), and forward current specifications (60mA max).

Frequently Asked Questions (FAQ)

Q: Can H11AA4SR2VM directly replace IL252-X017T in existing designs?

A: Yes, for applications operating within -40°C to 100°C and where 4170Vrms isolation meets system requirements. The 6-SMD package, pin configuration, and electrical characteristics are compatible. Applications requiring -55°C operation or 5300Vrms isolation require design modification.

Q: What is the difference between H11AA1SR2VM and H11AA4SR2VM?

A: The primary difference is current transfer ratio. H11AA4SR2VM provides 100% @ 10mA, matching the original IL252-X017T specification. H11AA1SR2VM provides 20% @ 10mA. Both parts are electrically and mechanically compatible. Selection depends on circuit requirements for LED drive current and output transistor gain.

Q: Are the onsemi H11AA parts available in the same packaging as IL252-X017T?

A: Yes. Both H11AA1SR2VM and H11AA4SR2VM use 6-SMD, Gull Wing surface mount packaging identical to IL252-X017T. Tape & Reel (TR) packaging is standard for both substitutes.

Q: What compliance certifications apply to the substitute parts?

A: Both H11AA1SR2VM and H11AA4SR2VM are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. H11AA4SR2VM carries REACH Unaffected designation. Both are classified as EAR99 for export control purposes.

Q: Is the lower isolation voltage of H11AA substitutes a concern?

A: The reduction from 5300Vrms to 4170Vrms must be evaluated against application isolation requirements. For most standard optoisolator applications, 4170Vrms provides adequate isolation. High-voltage or safety-critical applications require verification that 4170Vrms meets system specifications.