ISD204G Equivalent & Substitute Parts

Part Overview

The ISD204G is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation up to 5300Vrms with a single channel configuration in an 8-DIP package. The part is currently active in production with 981 units in stock. Alternative models are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

ISD204G

Isocom Components 2004 LTDIn Stock: 1001ISD204G Datasheet

Current PartRFQ

ISD204XG

Isocom Components 2004 LTDIn Stock: 1177ISD204XG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISD204G is determined by strict equivalence across the following critical parameters:

• Isolation voltage: 5300Vrms
• Number of channels: 1
• Output type: Transistor
• Current transfer ratio range: 200% to 400% @ 10mA
• Maximum output voltage: 70V
• Maximum output current per channel: 50mA
• Vce saturation: 400mV maximum
• Package type: 8-DIP (0.400", 10.16mm)
• Mounting type: Through Hole
• Operating temperature range: -25°C ~ 100°C

The ISD204XG meets all specified parameters and qualifies as a parametric equivalent within the ISD20 series.

Parameter Comparison

Engineering Selection Recommendations

Both ISD204G and ISD204XG are active products from Isocom Components 2004 LTD with identical electrical and mechanical specifications. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Selection between these parts may be based on inventory availability, procurement lead times, or supplier preference, as they are functionally interchangeable within the specified parameter set.

Frequently Asked Questions (FAQ)

Q: Can ISD204XG replace ISD204G in existing designs? A: Yes. The ISD204XG is a parametric equivalent with identical isolation voltage, channel configuration, output characteristics, and package specifications. Direct substitution is supported without circuit modification.

Q: Are there any differences in compliance or certification between these parts? A: No. Both parts carry identical RoHS3 compliance status and REACH unaffected designation. Moisture sensitivity level is 1 (Unlimited) for both components.

Q: What determines substitution eligibility for optoisolators in the ISD20 series? A: Substitution requires matching isolation voltage, number of channels, output type, current transfer ratio range, maximum output voltage and current, saturation voltage, package type, mounting method, and operating temperature range.

Q: Is the 8-DIP package pinout identical between ISD204G and ISD204XG? A: Both components use the 8-DIP (0.400", 10.16mm) package with identical through-hole mounting specifications. Pinout compatibility is maintained for direct board-level substitution.

Q: What is the significance of the current transfer ratio specification? A: The current transfer ratio of 200% to 400% @ 10mA defines the optical coupling efficiency. Both parts meet this specification, ensuring consistent LED-to-transistor signal transfer characteristics across the isolation barrier.