ILQ2-X016 Equivalent & Substitute Parts

Part Overview

The ILQ2-X016 is a 4-channel optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation voltage and is designed for applications requiring high-voltage signal isolation in 16-DIP through-hole packaging. The product is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

ILQ2-X016

Vishay Semiconductor Opto DivisionIn Stock: 1838ILQ2-X016 Datasheet

Current PartRFQ

ILQ2G

Isocom Components 2004 LTDIn Stock: 890ILQ2G Datasheet

MFR RecommendedRFQ

ILQ2XG

Isocom Components 2004 LTDIn Stock: 1179ILQ2XG Datasheet

MFR RecommendedRFQ

ISQ5X

Isocom Components 2004 LTDIn Stock: 850ISQ5X Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ILQ2-X016 is determined by the following critical parameters:

Primary Matching Criteria:

• Voltage - Isolation: 5300Vrms (mandatory match)
• Output Type: Transistor (mandatory match)
• Package / Case: 16-DIP (mandatory match)
• Input Type: DC (mandatory match)

Secondary Compatibility Criteria:

• Number of Channels: 4 channels (preferred for direct replacement)
• Current Transfer Ratio range overlap
• Maximum output voltage and current ratings
• Operating temperature range compatibility

The substitute parts are grouped into two categories:

Category A - Single-Channel Substitutes (ILQ2G, ILQ2XG): These parts maintain identical isolation voltage, output type, and package specifications but provide 1 channel instead of 4. These are suitable for applications where individual channel isolation is required or where multiple single-channel devices can be used in parallel.

Category B - Multi-Channel Substitute (ISQ5X): This part maintains the 4-channel configuration, isolation voltage, output type, and package specifications. The primary difference is a reduced minimum current transfer ratio (50% vs. 100%) and different package pitch (0.300" vs. 0.400").

Parameter Comparison

Engineering Selection Recommendations

For Direct 4-Channel Replacement: ISQ5X is the appropriate substitute when a 4-channel optoisolator with identical isolation voltage and output type is required. This part maintains active product status and ROHS3 compliance. The package pitch difference (0.300" vs. 0.400") must be evaluated for PCB layout compatibility. The reduced minimum current transfer ratio (50% vs. 100%) requires circuit design verification to ensure adequate signal margin.

For Single-Channel Applications: ILQ2G and ILQ2XG are suitable when individual channel isolation is required or when the application architecture permits use of multiple single-channel devices. Both parts maintain identical isolation voltage, output specifications, and package pitch to the main part. ILQ2XG is functionally equivalent to ILQ2G with identical electrical specifications and active product status.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, consistent with the main part. Operating temperature range is narrower for substitute parts (-25°C vs. -40°C minimum), which must be evaluated for applications requiring extended low-temperature operation.

Frequently Asked Questions (FAQ)

Q: Can ISQ5X be used as a direct replacement for ILQ2-X016 in existing PCB designs? A: ISQ5X maintains the same 16-DIP package designation and isolation voltage. However, the package pitch differs (0.300" vs. 0.400"), which affects PCB hole spacing. PCB layout modification is required. Electrical performance differences, particularly the reduced minimum current transfer ratio, must be evaluated for circuit compatibility.

Q: What is the difference between ILQ2G and ILQ2XG? A: Both parts are single-channel optoisolators with identical electrical specifications, isolation voltage, output type, and package dimensions. They are functionally equivalent substitutes for applications requiring single-channel isolation.

Q: Are the single-channel parts (ILQ2G, ILQ2XG) suitable for replacing the 4-channel ILQ2-X016? A: Single-channel parts can be used in applications where individual channel isolation is required or where circuit architecture permits parallel use of multiple devices. Direct pin-for-pin replacement is not possible due to different channel configuration. Application redesign is necessary.

Q: What is the impact of the narrower operating temperature range on substitute parts? A: Substitute parts operate from -25°C to 100°C, compared to -40°C to 100°C for the main part. Applications requiring operation below -25°C must use the original ILQ2-X016 or verify substitute part performance through testing.

Q: How does the reduced current transfer ratio of ISQ5X affect circuit design? A: ISQ5X has a minimum current transfer ratio of 50% compared to 100% for ILQ2-X016. This affects input current requirements and signal margin. Circuit design must account for this difference to ensure adequate isolation signal strength.

Q: Are all parts ROHS3 compliant? A: Yes, ILQ2-X016, ILQ2G, ILQ2XG, and ISQ5X are all ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating.