ISD203G Equivalent & Substitute Parts

Part Overview

The ISD203G 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 device is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when electrical and mechanical parameters align within the allowed specifications for this optoisolator category, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

ISD203G

Isocom Components 2004 LTDIn Stock: 1209ISD203G Datasheet

Current PartRFQ

ISD203XG

Isocom Components 2004 LTDIn Stock: 1099ISD203XG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ISD203G are identified based on strict parameter matching within the optoisolator transistor output category. The critical parameters determining substitution eligibility are:

• Voltage - Isolation: 5300Vrms
• Number of Channels: 1
• Current Transfer Ratio range: 225% to 450% @ 10mA
• Output Type: Transistor
• Voltage - Output (Max): 70V
• Current - Output / Channel: 50mA
• Vce Saturation (Max): 400mV
• Package / Case: 8-DIP (0.400", 10.16mm)
• Mounting Type: Through Hole
• Operating Temperature: -25°C ~ 100°C

Parts matching all these parameters are classified as parametric equivalents and direct substitutes. The ISD203XG meets all specified criteria and is listed as an equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

Both ISD203G and ISD203XG are Active product status components with identical electrical and mechanical specifications. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. Selection between these parts may be based on inventory availability, lead time, or supplier preference, as all functional parameters are equivalent. The 8-DIP through-hole package ensures compatibility with standard PCB layouts designed for either part number.

Frequently Asked Questions (FAQ)

Q: Can ISD203XG replace ISD203G in existing designs? A: Yes. The ISD203XG is a parametric equivalent with identical electrical characteristics, isolation voltage, current transfer ratio, output specifications, and package configuration. Direct substitution is supported without circuit modification.

Q: Are there any differences in compliance or certifications? 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 if a part is a valid substitute? A: Substitution is based on matching all critical parameters: isolation voltage (5300Vrms), channel count (1), current transfer ratio range (225-450% @ 10mA), output type (Transistor), maximum output voltage (70V), maximum output current (50mA), saturation voltage (400mV), package type (8-DIP), mounting method (Through Hole), and operating temperature range (-25°C to 100°C).

Q: Are there any package or pinout differences? A: No. Both parts use the 8-DIP (0.400", 10.16mm) package with identical through-hole mounting configuration. Pinout compatibility is guaranteed.

Q: What is the current transfer ratio specification? A: Both parts specify a current transfer ratio between 225% and 450% at 10mA input current. This parameter defines the ratio of output current to input current and is critical for circuit design calculations.