SL5500 Equivalent & Substitute Parts

Part Overview

The SL5500 is an optoisolator transistor with base output manufactured by onsemi, rated for 5300Vrms isolation voltage in a 6-DIP through-hole package. This component provides galvanic isolation for DC input signals with transistor output capability. The SL5500 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain functional compatibility across isolation voltage, output characteristics, and package form factor while accounting for differences in electrical performance specifications.

Substiute Parts

SL5500

onsemiIn Stock: 1405SL5500 Datasheet

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H11AV1M

onsemiIn Stock: 16471H11AV1M Datasheet

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4N35-000E

Broadcom LimitedIn Stock: 39614N35-000E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SL5500 are identified based on the following critical parameters that determine functional compatibility:

• Package compatibility: All substitutes must use 6-DIP (0.300", 7.62mm) through-hole mounting to ensure PCB layout compatibility
• Output configuration: All substitutes must provide transistor output with base connection for identical circuit interface
• Input type: All substitutes must accept DC input signals
• Single channel: All substitutes must provide one isolated channel
• Isolation voltage: Substitutes must meet or exceed the minimum isolation voltage requirement of the application; lower isolation ratings represent functional substitutes for applications not requiring the full 5300Vrms rating
• Operating temperature range: Substitutes must support the required temperature envelope or a compatible subset

The SL5500 has two identified substitutes: H11AV1M (onsemi) and 4N35-000E (Broadcom Limited). Both maintain the core functional requirements of 6-DIP package, DC input, transistor with base output, and single-channel isolation. Differences in isolation voltage, current transfer ratio, and output voltage ratings reflect design variations that may affect circuit performance in specific applications.

Parameter Comparison

Engineering Selection Recommendations

H11AV1M (onsemi): This substitute is an active product with current manufacturing support. It provides lower isolation voltage (4170Vrms versus 5300Vrms) but offers improved current transfer ratio performance (100% minimum versus 40% minimum) and faster switching characteristics (15µs turn-on/off versus 20µs/50µs). The H11AV1M is RoHS3 compliant and suitable for applications where the lower isolation rating is acceptable. Operating temperature range is -40°C to 100°C, which is narrower than the SL5500 at the low end.

4N35-000E (Broadcom Limited): This substitute is an active product with established supply availability. It provides the lowest isolation voltage (3550Vrms) among the three options but maintains the same maximum output voltage (30V) and current (100mA) as the SL5500. The 4N35-000E offers superior Vce saturation performance (300mV maximum versus 400mV) and faster rise/fall times (3µs). It is RoHS3 compliant and supports the full operating temperature range of -55°C to 100°C, matching the SL5500 specification.

Selection between substitutes depends on isolation voltage requirements and performance priorities. For applications requiring maximum isolation voltage, neither substitute fully matches the SL5500 specification. For applications tolerant of lower isolation ratings, H11AV1M offers improved current transfer characteristics, while 4N35-000E provides superior switching speed and saturation performance with full temperature range support.

Frequently Asked Questions (FAQ)

Q: Can H11AV1M be used as a direct replacement for SL5500?

A: H11AV1M is functionally compatible in terms of package, input type, output configuration, and channel count. However, the isolation voltage is reduced from 5300Vrms to 4170Vrms. Substitution is valid only if the application does not require the full isolation voltage rating of the SL5500. Additionally, the operating temperature minimum is -40°C instead of -55°C.

Q: What are the key differences between 4N35-000E and SL5500?

A: Both parts share identical package (6-DIP), mounting type (through hole), and operating temperature range (-55°C to 100°C). The primary differences are isolation voltage (3550Vrms versus 5300Vrms), current transfer ratio minimum (100% versus 40%), and Vce saturation (300mV versus 400mV). The 4N35-000E provides faster switching performance but lower isolation capability.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 6-DIP (0.300", 7.62mm) package with identical through-hole mounting. Pin configuration for transistor output with base connection is consistent across all three parts, enabling direct PCB layout compatibility.

Q: Which substitute should be selected for high-speed switching applications?

A: The 4N35-000E offers the fastest switching characteristics with 3µs rise and fall times, compared to the SL5500's unspecified rise/fall time and 20µs/50µs turn-on/off times. If switching speed is the primary design criterion and isolation voltage can be reduced to 3550Vrms, the 4N35-000E is the appropriate selection.

Q: What compliance certifications apply to each part?

A: All three parts are REACH Unaffected and carry EAR99 ECCN classification. H11AV1M and 4N35-000E are RoHS3 compliant. SL5500 and 4N35-000E both have MSL rating of 1 (Unlimited), while H11AV1M has MSL Not Applicable.

Q: Can the SL5500 be replaced in applications requiring 5300Vrms isolation?

A: No. Neither H11AV1M (4170Vrms) nor 4N35-000E (3550Vrms) meets the 5300Vrms isolation requirement. If this isolation voltage is mandatory, alternative optoisolator families with higher voltage ratings must be evaluated outside this substitute group.