SL5501 Equivalent & Substitute Parts

Part Overview

The SL5501 is an optoisolator transistor with base output manufactured by onsemi, rated for 5300Vrms isolation voltage in a 6-DIP package. This component provides galvanic isolation for single-channel DC input applications with transistor output capability. The SL5501 is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts must maintain compatibility across isolation voltage, package form factor, and output characteristics to ensure functional equivalence in circuit applications.

Substiute Parts

SL5501

onsemiIn Stock: 1849SL5501 Datasheet

Current PartRFQ

H11AV1M

onsemiIn Stock: 16471H11AV1M Datasheet

SimilarRFQ

4N25-000E

Broadcom LimitedIn Stock: 30614N25-000E Datasheet

SimilarRFQ

4N35

onsemiIn Stock: 979644N35 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SL5501 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package / Case: 6-DIP (0.300", 7.62mm) form factor required for mechanical fit
• Mounting Type: Through Hole configuration
• Output Type: Transistor with Base output topology
• Input Type: DC input compatibility
• Number of Channels: Single channel (1 channel)

Electrical Compatibility Criteria:

• Isolation Voltage: Minimum 5300Vrms or equivalent rating
• Voltage - Output (Max): 30V or greater
• Current - Output / Channel: 100mA or greater
• Operating Temperature Range: Must encompass or match -55°C ~ 100°C

Substitute parts are grouped based on isolation voltage rating and electrical performance characteristics. Parts meeting all mechanical and package requirements with equivalent or superior electrical ratings are considered direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

H11AV1M (onsemi): Active product status with ROHS3 compliance. Isolation voltage of 4170Vrms is lower than the SL5501 specification of 5300Vrms. Output voltage rating of 70V exceeds SL5501 requirements. Current transfer ratio minimum of 100% @ 10mA is superior to SL5501. Operating temperature range of -40°C ~ 100°C does not extend to -55°C lower limit. Suitable for applications where 4170Vrms isolation is acceptable and lower temperature operation below -40°C is not required.

4N25-000E (Broadcom Limited): Active product status with ROHS3 compliance. Isolation voltage of 2500Vrms is significantly lower than SL5501 specification. Output voltage and current ratings match SL5501 requirements. Operating temperature range of -55°C ~ 100°C matches SL5501. Suitable only for applications with reduced isolation voltage requirements.

4N35 (onsemi): Obsolete product status matching SL5501. Isolation voltage of 5300Vrms matches SL5501 specification exactly. Current transfer ratio minimum of 100% @ 10mA exceeds SL5501. Vce saturation of 300mV is superior to SL5501. Operating temperature range of -55°C ~ 100°C matches SL5501. Direct electrical equivalent with identical isolation rating and package configuration.

Frequently Asked Questions (FAQ)

Q: Can H11AV1M replace SL5501 in all applications? A: H11AV1M is mechanically and functionally compatible in 6-DIP through-hole applications. However, isolation voltage is reduced from 5300Vrms to 4170Vrms. Substitution is valid only if circuit design requirements permit 4170Vrms isolation. Operating temperature range does not extend to -55°C, limiting use in extreme cold environments.

Q: What is the primary difference between 4N35 and SL5501? A: Both parts share identical isolation voltage (5300Vrms), package configuration (6-DIP), and operating temperature range (-55°C ~ 100°C). The 4N35 offers superior current transfer ratio (100% minimum vs. 25% minimum) and lower Vce saturation (300mV vs. 400mV). Both are classified as obsolete products.

Q: Is 4N25-000E suitable as a direct replacement? A: 4N25-000E maintains mechanical compatibility and through-hole mounting. However, isolation voltage of 2500Vrms is substantially lower than SL5501 specification of 5300Vrms. Use only in applications where reduced isolation voltage is acceptable and circuit design permits lower isolation ratings.

Q: Why is package compatibility critical for optoisolator substitution? A: The 6-DIP (0.300", 7.62mm) package form factor determines physical fit on printed circuit boards and compatibility with existing PCB layouts. All substitute parts listed maintain this package specification to ensure direct mechanical replacement without PCB redesign.

**Q: What compliance certifications shoul