SL5500S Equivalent & Substitute Parts

Part Overview

The SL5500S is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 5300Vrms isolation rating. This component features a single-channel configuration with transistor output and base connection, housed in a 6-SMD surface mount package. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

SL5500S

onsemiIn Stock: 862SL5500S Datasheet

Current PartRFQ

H11AV1SM

Fairchild SemiconductorIn Stock: 12493H11AV1SM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SL5500S is determined by the following critical parameters:

• Isolation Voltage: Minimum 4170Vrms (the substitute must maintain adequate isolation for the application)
• Output Configuration: Transistor with Base output type
• Number of Channels: Single channel
• Package Type: 6-SMD, Gull Wing surface mount
• Input Type: DC
• Current Transfer Ratio Range: Overlap within 40% to 300% @ 10mA specification window
• Output Voltage Rating: Minimum 30V capability
• Vce Saturation: Maximum 400mV

The H11AV1SM from Fairchild Semiconductor meets these substitution criteria with compatible electrical characteristics and identical package configuration.

Parameter Comparison

Engineering Selection Recommendations

The H11AV1SM is a functional substitute for the obsolete SL5500S based on matching package configuration, output topology, and core electrical parameters. The substitute part is currently in active production status with substantial inventory availability (12400 pcs), ensuring supply chain continuity.

Key considerations for selection:

• Isolation Voltage Margin: The H11AV1SM provides 4170Vrms isolation versus the SL5500S 5300Vrms specification. Applications requiring the full 5300Vrms isolation rating must evaluate whether the 1130Vrms reduction is acceptable for the specific circuit design.
• Temperature Range: The H11AV1SM operates from -40°C to 100°C, compared to the SL5500S range of -55°C to 100°C. Applications requiring operation below -40°C require alternative solutions.
• Compliance: Both parts carry EAR99 ECCN classification and HTSUS code 8541.49.8000, maintaining regulatory consistency.

Frequently Asked Questions (FAQ)

Q: Can the H11AV1SM directly replace the SL5500S in existing designs?

A: Direct replacement is possible if the application isolation voltage requirement does not exceed 4170Vrms and the operating temperature range does not require operation below -40°C. The identical 6-SMD package and transistor-with-base output configuration ensure mechanical and functional compatibility. Electrical performance characteristics (current transfer ratio, saturation voltage, switching speed) are compatible or superior.

Q: What is the primary difference between these two parts?

A: The main differences are isolation voltage rating (5300Vrms vs. 4170Vrms) and operating temperature range (-55°C to 100°C vs. -40°C to 100°C). The H11AV1SM offers faster switching times (15µs vs. 20µs turn-on) and higher maximum output voltage (70V vs. 30V).

Q: Are there any package compatibility concerns?

A: No. Both parts use identical 6-SMD, Gull Wing surface mount packaging. PCB footprints, reflow profiles, and assembly processes are interchangeable.

Q: Why is the SL5500S obsolete?

A: The product status reflects onsemi's discontinuation of this part number. The H11AV1SM from Fairchild Semiconductor remains in active production and provides equivalent functionality for most applications.

Q: What should I verify before implementing the H11AV1SM as a substitute?

A: Confirm that your application isolation voltage requirement does not exceed 4170Vrms and that the operating temperature range of -40°C to 100°C is acceptable. Review the current transfer ratio specification (H11AV1SM minimum 100% vs. SL5500S minimum 40%) to ensure circuit biasing remains appropriate.