SL5504S Equivalent & Substitute Parts

Part Overview

The SL5504S 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 where equivalent functionality is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	SL5504S
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	25% @ 10mA
Current Transfer Ratio (Max)	400% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	80V
Current - Output / Channel	100mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the SL5504S is determined by the following critical parameters that must be maintained or exceeded:

Isolation Voltage: Minimum 5300Vrms required for equivalent isolation performance
Number of Channels: Single channel configuration mandatory
Output Type: Transistor with base output required for circuit compatibility
Package Type: 6-SMD, Gull Wing surface mount package for PCB compatibility
Input Type: DC input configuration
Vce Saturation: Maximum 400mV acceptable for switching performance
Operating Temperature Range: Must support -55°C to 100°C or equivalent range

The H11AV1SM from Fairchild Semiconductor is identified as a substitute part. However, this part exhibits a lower isolation voltage rating (4170Vrms) compared to the SL5504S (5300Vrms), which represents a functional limitation in high-voltage isolation applications.

Parameter Comparison

Parameter	SL5504S (onsemi)	H11AV1SM (Fairchild Semiconductor)	Compatibility Notes
Number of Channels	1	1	Match
Voltage - Isolation	5300Vrms	4170Vrms	H11AV1SM rated lower
Current Transfer Ratio (Min)	25% @ 10mA	100% @ 10mA	H11AV1SM exceeds minimum
Current Transfer Ratio (Max)	400% @ 10mA	300% @ 10mA	H11AV1SM within range
Turn On / Turn Off Time	50µs, 150µs (Max)	15µs, 15µs (Max)	H11AV1SM faster response
Output Type	Transistor with Base	Transistor with Base	Match
Voltage - Output (Max)	80V	70V	H11AV1SM rated lower
Vce Saturation (Max)	400mV	400mV	Match
Operating Temperature	-55°C ~ 100°C	-40°C ~ 100°C	SL5504S supports lower temperature
Mounting Type	Surface Mount	Surface Mount	Match
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	Match
Product Status	Obsolete	Active	H11AV1SM currently available

Engineering Selection Recommendations

The H11AV1SM is available as an active product from Fairchild Semiconductor, providing supply continuity for applications previously using the obsolete SL5504S. Both components share identical package configurations (6-SMD, Gull Wing) and output topology (transistor with base), enabling direct PCB layout compatibility.

Selection of the H11AV1SM requires evaluation of application-specific isolation voltage requirements. The H11AV1SM isolation rating of 4170Vrms is lower than the SL5504S specification of 5300Vrms. Applications requiring the full 5300Vrms isolation margin must assess whether the reduced rating presents acceptable risk for the intended circuit function.

The H11AV1SM demonstrates superior switching performance with turn-on and turn-off times of 15µs compared to the SL5504S maximum of 150µs, and a higher minimum current transfer ratio (100% versus 25%), which may improve circuit reliability in certain applications.

Both components carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, indicating equivalent regulatory and trade compliance status.

Frequently Asked Questions (FAQ)

Q: Can the H11AV1SM directly replace the SL5504S in all applications?

A: Direct replacement is possible from a package and pinout perspective. However, the H11AV1SM isolation voltage rating of 4170Vrms is lower than the SL5504S rating of 5300Vrms. Applications designed for the full 5300Vrms isolation margin must evaluate whether the reduced rating is acceptable for their specific circuit requirements and safety margins.

Q: What are the key differences between these two parts?

A: The primary differences are isolation voltage (SL5504S 5300Vrms vs. H11AV1SM 4170Vrms), maximum output voltage (SL5504S 80V vs. H11AV1SM 70V), switching speed (H11AV1SM faster at 15µs vs. SL5504S 150µs maximum), and operating temperature range (SL5504S -55°C to 100°C vs. H11AV1SM -40°C to 100°C).

Q: Are the packages identical?

A: Yes. Both the SL5504S and H11AV1SM use 6-SMD, Gull Wing surface mount packages, ensuring PCB layout and footprint compatibility.

Q: What is the current transfer ratio difference?

A: The SL5504S has a minimum CTR of 25% and maximum of 400%. The H11AV1SM has a minimum CTR of 100% and maximum of 300%. The H11AV1SM guarantees higher minimum performance, which may reduce circuit design margin requirements.

Q: Does the H11AV1SM support the same temperature range?

A: No. The SL5504S operates from -55°C to 100°C, while the H11AV1SM operates from -40°C to 100°C. Applications requiring operation below -40°C cannot use the H11AV1SM as a substitute.

Q: What is the availability status of each part?

A: The SL5504S is obsolete and no longer manufactured. The H11AV1SM is an active product with current manufacturing and distribution availability.

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