SL5504SD Equivalent & Substitute Parts

Part Overview

The SL5504SD 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 integrated base connection, housed in a 6-SMD surface mount package. The SL5504SD is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

SL5504SD

onsemiIn Stock: 1142SL5504SD Datasheet

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H11AV1SR2M

onsemiIn Stock: 2309H11AV1SR2M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SL5504SD is determined by the following critical parameters:

• Isolation Voltage Rating: The substitute must maintain isolation capability at or above the application requirement. The SL5504SD specifies 5300Vrms isolation.
• Output Configuration: The substitute must provide transistor output with base connection to maintain circuit compatibility.
• Number of Channels: Single-channel configuration is required.
• Package and Mounting: 6-SMD surface mount package with gull wing leads ensures mechanical and electrical compatibility.
• Output Electrical Characteristics: Maximum output voltage, output current capacity, and Vce saturation must support the intended load.
• Input Type: DC input operation must be maintained.

The H11AV1SR2M qualifies as a substitute based on matching output topology, package configuration, and single-channel design. However, the isolation voltage rating of 4170Vrms is lower than the SL5504SD specification, requiring application-level verification that the reduced isolation voltage is acceptable for the intended circuit.

Parameter Comparison

Engineering Selection Recommendations

The H11AV1SR2M is available as an active product from onsemi, providing supply continuity for applications currently using the obsolete SL5504SD. Both components share identical package configuration, mounting type, and output topology, enabling direct mechanical substitution in surface mount assemblies.

Key considerations for component selection:

• Isolation Voltage Differential: The H11AV1SR2M provides 4170Vrms isolation versus the SL5504SD specification of 5300Vrms. Applications requiring the full 5300Vrms isolation margin must evaluate whether the reduced rating is acceptable for the specific circuit environment and safety requirements.
• Current Transfer Ratio Range: The H11AV1SR2M exhibits a higher minimum CTR (100% versus 25%), which may affect circuit biasing and gain characteristics. The maximum CTR is slightly lower (300% versus 400%).
• Switching Speed: The H11AV1SR2M demonstrates faster switching performance with 15µs turn-on and turn-off times compared to the SL5504SD (50µs turn-on, 150µs turn-off maximum).
• Temperature Range: The SL5504SD supports operation to -55°C, while the H11AV1SR2M minimum is -40°C. Applications requiring extended low-temperature operation must account for this difference.
• Compliance Status: The H11AV1SR2M carries ROHS3 compliance certification, supporting modern procurement and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the H11AV1SR2M directly replace the SL5504SD in existing designs?

A: Mechanical and electrical pin compatibility exists due to identical 6-SMD package configuration and transistor-with-base output topology. However, the reduced isolation voltage rating (4170Vrms versus 5300Vrms) and different current transfer ratio characteristics require circuit-level evaluation before substitution.

Q: What is the significance of the isolation voltage difference?

A: Isolation voltage rating defines the maximum voltage that can be safely applied across the optoisolator's internal barrier without breakdown. The SL5504SD specifies 5300Vrms isolation, while the H11AV1SR2M specifies 4170Vrms. Applications designed for the higher rating must confirm that the lower rating of the substitute part meets the isolation requirements of the intended circuit.

Q: How do the current transfer ratio differences affect circuit operation?

A: Current transfer ratio (CTR) determines the relationship between input LED current and output transistor current. The H11AV1SR2M minimum CTR of 100% is significantly higher than the SL5504SD minimum of 25%, affecting output current for a given input current. Circuit designs relying on specific CTR values must be re-evaluated with the substitute part's characteristics.

Q: Are there temperature range limitations with the H11AV1SR2M?

A: The H11AV1SR2M operates from -40°C to 100°C, compared to the SL5504SD range of -55°C to 100°C. Applications requiring operation below -40°C cannot use the H11AV1SR2M as a substitute.

Q: What packaging options are available for the H11AV1SR2M?

A: The H11AV1SR2M is supplied in Tape & Reel (TR) packaging for automated assembly processes, maintaining compatibility with standard surface mount manufacturing workflows.