IS852SM Optoisolator Darlington Output Equivalent & Substitute Parts

Part Overview

The IS852SM is a single-channel optoisolator with Darlington output manufactured by Isocom Components 2004 LTD. This 4-pin surface mount component provides galvanic isolation rated at 5300Vrms with DC input and Darlington output configuration. The part is active in production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Alternative models become necessary when managing inventory constraints, regional availability, or when design flexibility permits selection from qualified equivalent components within the same electrical and mechanical specification envelope.

Substiute Parts

IS852SM

Isocom Components 2004 LTDIn Stock: 1115IS852SM Datasheet

Current PartRFQ

IS627SM

Isocom Components 2004 LTDIn Stock: 1075IS627SM Datasheet

Parametric EquivalentRFQ

IS852XSM

Isocom Components 2004 LTDIn Stock: 1301IS852XSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IS852SM are qualified based on strict electrical and mechanical parameter matching. The substitution criteria are:

• Single channel configuration with Darlington output topology
• Isolation voltage rating of 5300Vrms
• Current transfer ratio range: 1000% to 15000% @ 1mA
• Maximum output voltage of 300V
• Output current capacity of 150mA per channel
• Rise and fall times of 100µs and 20µs respectively
• Surface mount 4-pin SMD package with gull wing leads
• Operating temperature range of -30°C to 100°C
• RoHS3 compliance and MSL Level 1 rating

Two substitute parts meet these criteria: IS852XSM and IS627SM, both manufactured by Isocom Components 2004 LTD and sharing identical electrical specifications with the primary part.

Parameter Comparison

Engineering Selection Recommendations

All three parts—IS852SM, IS852XSM, and IS627SM—are active production components with identical electrical and mechanical specifications. Selection among these optoisolators should be based on:

• Inventory availability and lead time requirements
• Supply chain logistics and regional sourcing preferences
• Cost considerations where applicable
• Compliance requirements: all parts maintain RoHS3 compliance and REACH unaffected status
• Regulatory classification: all parts carry ECCN EAR99 designation

The IS852XSM and IS627SM are direct parametric equivalents to the IS852SM and may be substituted without circuit redesign or performance degradation when the specified electrical and mechanical parameters are the controlling factors in component selection.

Frequently Asked Questions (FAQ)

Q: Can IS852XSM and IS627SM be used interchangeably with IS852SM in existing designs?

A: Yes. All three parts share identical electrical specifications including isolation voltage, current transfer ratio range, output voltage and current ratings, switching times, and operating temperature range. The 4-pin SMD gull wing package is identical across all three parts, permitting direct substitution at the PCB level.

Q: What is the difference between IS852SM and IS852XSM?

A: Both parts are from the IS852 series and carry identical electrical and mechanical specifications. The designation difference reflects manufacturing or packaging variants within the same product line. No functional or performance difference exists between these parts.

Q: Why would IS627SM be selected over IS852SM?

A: IS627SM is from a different series but meets all electrical and mechanical requirements for applications requiring the IS852SM specification envelope. Selection would typically be driven by inventory availability, supply chain considerations, or cost factors rather than technical performance differences.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. IS852SM, IS852XSM, and IS627SM all carry RoHS3 compliance certification and are REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these optoisolators?

A: All three parts carry MSL Level 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling. Standard component storage practices apply.

Q: Can these parts be used in high-temperature applications?

A: The operating temperature range for all three parts is -30°C to 100°C. Applications requiring operation outside this range require alternative component selection.