ISP620-4SM Equivalent & Substitute Parts

Part Overview

The ISP620-4SM is a quad optocoupler manufactured by Isocom Components 2004 LTD, designed for AC and DC input applications with transistor output configuration. This 16-pin surface mount device provides galvanic isolation up to 5300Vrms across four independent channels, making it suitable for industrial control, power management, and signal isolation applications. The part is currently in active production status with full RoHS3 compliance and REACH unaffected certification. Substitute parts are identified based on matching electrical performance parameters, isolation ratings, channel configuration, and physical packaging specifications.

Substiute Parts

ISP620-4SM

Isocom Components 2004 LTDIn Stock: 1148ISP620-4SM Datasheet

Current PartRFQ

ISP620-4XSM

Isocom Components 2004 LTDIn Stock: 1185ISP620-4XSM Datasheet

Parametric EquivalentRFQ

TLP620-4XSM

Isocom Components 2004 LTDIn Stock: 1037TLP620-4XSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISP620-4SM are qualified based on strict parametric equivalence across the following critical criteria:

Isolation Voltage: 5300Vrms minimum requirement maintained across all substitutes.

Channel Configuration: Four independent channels required for direct functional replacement.

Output Configuration: Transistor output type with matching electrical characteristics (Vce Saturation Max 400mV, Output Voltage Max 55V, Output Current 50mA per channel).

Current Transfer Ratio: Minimum 50% and maximum 600% @ 5mA to ensure consistent signal transmission across the isolation barrier.

Switching Performance: Rise and fall times of 4µs and 3µs respectively for timing-critical applications.

Input Compatibility: AC and DC input capability maintained.

Physical Package: 16-SMD Gull Wing surface mount configuration for PCB assembly compatibility.

Environmental & Compliance: Operating temperature range -30°C to 100°C, RoHS3 compliance, and REACH unaffected status required for regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

All three parts—ISP620-4SM, ISP620-4XSM, and TLP620-4XSM—are functionally equivalent for direct substitution in applications requiring quad optocoupler isolation. Selection between these parts should be based on availability and supply chain considerations rather than electrical performance differences, as all parameters are identical.

All parts maintain active production status, ensuring long-term availability and supply continuity. RoHS3 compliance and REACH unaffected certification are consistent across all options, supporting regulatory requirements in industrial and commercial applications.

The 16-SMD Gull Wing package format is standardized across all substitutes, enabling seamless PCB assembly without design modifications or layout changes.

Frequently Asked Questions (FAQ)

Q: Can ISP620-4XSM and TLP620-4XSM be used interchangeably with ISP620-4SM?

A: Yes. All three parts share identical electrical specifications, isolation voltage ratings, channel configuration, output characteristics, and physical packaging. Direct substitution is supported without circuit modifications.

Q: What determines if a part qualifies as a substitute for ISP620-4SM?

A: Substitution eligibility is based on matching: four-channel configuration, 5300Vrms isolation voltage, transistor output type with 400mV maximum Vce saturation, 50mA per-channel output current, 50-600% current transfer ratio range, 4µs and 3µs rise/fall times, AC/DC input capability, 16-SMD Gull Wing package, and -30°C to 100°C operating temperature range.

Q: Are there any package or pinout differences between these parts?

A: No. All three parts use identical 16-SMD Gull Wing surface mount packaging with matching pinout and footprint specifications.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. ISP620-4SM, ISP620-4XSM, and TLP620-4XSM are all RoHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: What is the difference between ISP620-4SM and ISP620-4XSM?

A: Both parts are manufactured by Isocom Components 2004 LTD and share the same ISP620-4 series designation. All electrical and physical parameters are identical. The difference is limited to part number designation and inventory availability.

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 beyond this range require alternative component selection.