IS852 Optoisolator Darlington Output Equivalent & Substitute Parts

Part Overview

The IS852 is a single-channel optoisolator with Darlington output manufactured by Isocom Components 2004 LTD. This 4-DIP through-hole component provides galvanic isolation up to 5300Vrms and is designed for DC input applications requiring high current transfer ratios and reliable switching performance. The part is active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across isolation voltage, output current capacity, switching characteristics, and package specifications.

Substiute Parts

IS852

Isocom Components 2004 LTDIn Stock: 788IS852 Datasheet

Current PartRFQ

IS627

Isocom Components 2004 LTDIn Stock: 1073IS627 Datasheet

Parametric EquivalentRFQ

IS852X

Isocom Components 2004 LTDIn Stock: 1180IS852X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IS852 optoisolator are qualified based on strict equivalence across the following critical parameters:

• Isolation voltage: 5300Vrms
• Single-channel Darlington output configuration
• Maximum output current: 150mA per channel
• Current transfer ratio range: 1000% to 15000% @ 1mA
• DC input type
• Maximum output voltage: 300V
• Switching characteristics: 100µs rise time, 20µs fall time
• Package specification: 4-DIP (0.300", 7.62mm) through-hole
• Operating temperature range: -30°C ~ 100°C
• RoHS3 compliance and MSL Level 1 rating

All identified substitutes maintain identical electrical performance and mechanical compatibility with the IS852, ensuring direct replacement capability in existing circuit designs without modification.

Parameter Comparison

Engineering Selection Recommendations

Both IS627 and IS852X are active production parts from Isocom Components 2004 LTD with full RoHS3 compliance and identical electrical specifications to the IS852. All three parts share the same isolation voltage, output current capacity, switching performance, and package configuration. Selection between IS852, IS627, and IS852X is determined by availability and supply chain requirements, as all three components are functionally equivalent for DC input optoisolation applications requiring 5300Vrms isolation and Darlington output switching.

Frequently Asked Questions (FAQ)

Q: Can IS627 and IS852X be used as direct replacements for IS852?

A: Yes. IS627 and IS852X are parametric equivalents to IS852. All three parts share identical isolation voltage (5300Vrms), single-channel Darlington output configuration, maximum output current (150mA), current transfer ratio range (1000% to 15000% @ 1mA), switching characteristics (100µs rise, 20µs fall), and 4-DIP through-hole package specification. Direct substitution is supported without circuit modification.

Q: Are there differences in package dimensions between these parts?

A: No. IS852, IS627, and IS852X all use the 4-DIP (0.300", 7.62mm) through-hole package. Pin spacing, lead configuration, and PCB footprint requirements are identical across all three parts.

Q: What compliance certifications apply to all substitute parts?

A: All three parts are RoHS3 compliant, carry MSL Level 1 (unlimited moisture sensitivity), and maintain active production status. REACH status is unaffected for all parts.

Q: Are there any electrical performance differences between IS852, IS627, and IS852X?

A: No. All three parts maintain identical electrical specifications including isolation voltage, output voltage rating, output current capacity, current transfer ratio, saturation voltage, forward voltage, and operating temperature range.

Q: Which part should be selected for new designs?

A: Any of the three parts—IS852, IS627, or IS852X—are suitable for new designs. Selection should be based on component availability, lead time, and supply chain considerations, as all three are functionally and mechanically equivalent.