IS5SM Optoisolator Transistor - Equivalent & Substitute Parts

Part Overview

The IS5SM is an active optoisolator transistor with base output manufactured by Isocom Components 2004 LTD. This 6-pin surface mount component provides galvanic isolation at 5300Vrms with a single channel transistor output configuration. The part is designed for applications requiring high-voltage isolation with DC input control and transistor-based output switching. As an active product in inventory with ROHS3 compliance, the IS5SM serves as a primary selection for new designs and existing applications requiring replacement stock.

Substiute Parts

IS5SM

Isocom Components 2004 LTDIn Stock: 1134IS5SM Datasheet

Current PartRFQ

IS5XSM

Isocom Components 2004 LTDIn Stock: 1175IS5XSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IS5SM is determined by strict equivalence across the following critical parameters:

• Voltage - Isolation: 5300Vrms
• Number of Channels: 1
• Output Type: Transistor with Base
• Current Transfer Ratio range: 50% to 400% @ 10mA
• Voltage - Output (Max): 70V
• Current - Output / Channel: 50mA
• Package / Case: 6-SMD, Gull Wing
• Mounting Type: Surface Mount
• Input Type: DC
• Operating Temperature range: -25°C ~ 100°C

Only parts matching all these parameters across the specified ranges qualify as direct substitutes. The IS5XSM meets these criteria and is classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the IS5SM and IS5XSM are active products manufactured by Isocom Components 2004 LTD with identical electrical and mechanical specifications. Selection between these parts is based on inventory availability and supply chain considerations rather than technical differentiation.

The IS5SM carries 1105 pieces in new original stock, while the IS5XSM has 1130 pieces available. Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, making either suitable for applications with standard moisture and environmental requirements.

For new designs and production applications, either part may be selected based on procurement lead times and supplier availability. For existing applications currently using the IS5SM, the IS5XSM provides direct functional replacement without circuit redesign or validation requirements.

Frequently Asked Questions (FAQ)

Q: Can IS5XSM replace IS5SM in existing applications?

A: Yes. The IS5XSM is a parametric equivalent with identical electrical characteristics, isolation voltage, output current rating, switching speed, and package configuration. Direct substitution is supported without circuit modification.

Q: Are there any differences in compliance or environmental ratings?

A: No. Both parts share identical RoHS3 compliance, REACH status, and MSL 1 moisture sensitivity rating. Environmental and regulatory requirements are equivalent.

Q: What determines substitution eligibility for optoisolator transistors?

A: Substitution requires matching isolation voltage, channel count, output type, current transfer ratio range, maximum output voltage, output current per channel, switching speed characteristics, package type, and operating temperature range. The IS5SM and IS5XSM meet all these criteria.

Q: Is the 6-SMD Gull Wing package identical between both parts?

A: Yes. Both parts use the same 6-SMD surface mount package with Gull Wing lead configuration, ensuring PCB footprint and assembly process compatibility.

Q: Which part should be selected for new procurement?

A: Selection may be based on current inventory levels and supplier availability. The IS5XSM currently has slightly higher stock (1130 vs 1105 pieces), but both are active products suitable for immediate procurement.