ISQ1G Equivalent & Substitute Parts

Part Overview

The ISQ1G is an optoisolator transistor output device manufactured by Isocom Components 2004 LTD, designed for galvanic isolation applications requiring high voltage isolation. This 16-pin DIP package component provides transistor output with base connection, delivering 5300Vrms isolation voltage with a single channel configuration. The part is currently in active production status with 970 units available in stock. Alternative models may be required due to inventory constraints, design flexibility, or supply chain considerations.

Substiute Parts

ISQ1G

Isocom Components 2004 LTDIn Stock: 1026ISQ1G Datasheet

Current PartRFQ

ISQ1XG

Isocom Components 2004 LTDIn Stock: 746ISQ1XG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISQ1G 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: 20% to 300% @ 10mA
• Voltage - Output (Max): 70V
• Current - Output / Channel: 50mA
• Package / Case: 16-DIP (0.400", 10.16mm)
• Mounting Type: Through Hole
• Operating Temperature range: -25°C ~ 100°C

Only components matching all these parameters across the ISQ series are classified as parametric equivalents. The ISQ1XG meets these criteria and is therefore listed as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Both ISQ1G and ISQ1XG are active production components from Isocom Components 2004 LTD with identical electrical and mechanical specifications. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Selection between these parts may be based on inventory availability, supply chain lead times, or procurement preferences, as they are functionally equivalent for all specified applications. The ISQ1G currently maintains higher inventory levels at 970 units, while ISQ1XG has 666 units available.

Frequently Asked Questions (FAQ)

Q: Can ISQ1XG be used as a direct replacement for ISQ1G? A: Yes. ISQ1XG is a parametric equivalent with identical electrical characteristics, isolation voltage, output current ratings, timing specifications, and package configuration. Both components are pin-compatible 16-DIP through-hole devices.

Q: Are there any differences in isolation voltage between these parts? A: No. Both ISQ1G and ISQ1XG provide 5300Vrms isolation voltage with identical current transfer ratio specifications of 20% to 300% @ 10mA.

Q: Do these parts have the same package dimensions? A: Yes. Both components use the 16-DIP (0.400", 10.16mm) package with through-hole mounting, ensuring identical PCB footprint and assembly compatibility.

Q: What is the operating temperature range for both parts? A: Both ISQ1G and ISQ1XG operate across -25°C to 100°C, with identical rise and fall time characteristics of 2.6µs and 2.2µs respectively.

Q: Are both parts compliant with current environmental standards? A: Yes. Both ISQ1G and ISQ1XG are ROHS3 compliant with MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.