ILQ1G Optoisolator Equivalent & Substitute Parts

Part Overview

The ILQ1G is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This 16-pin DIP component provides galvanic isolation up to 5300Vrms with a single channel transistor detector configuration. The part is currently in active production status with 700 units available in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across isolation voltage, current transfer ratio, output specifications, and package form factor.

Substiute Parts

ILQ1G

Isocom Components 2004 LTDIn Stock: 789ILQ1G Datasheet

Current PartRFQ

ILQ1XG

Isocom Components 2004 LTDIn Stock: 871ILQ1XG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ILQ1G is determined by strict equivalence across the following critical parameters:

Isolation voltage must equal 5300Vrms to maintain galvanic separation specifications. Current transfer ratio range (20% to 300% @ 10mA) defines the optical coupling efficiency and must be identical. Output configuration must remain transistor type with maximum output voltage of 50V and channel current of 50mA. Saturation voltage (Vce Max) must not exceed 400mV. Rise and fall times must match 2µs specification. Package form factor must be 16-DIP through-hole configuration. Operating temperature range must span -25°C to 100°C minimum. Compliance certifications (ROHS3, REACH Unaffected) must be maintained.

The ILQ1XG meets all substitution criteria as a parametric equivalent part.

Parameter Comparison

Engineering Selection Recommendations

Both ILQ1G and ILQ1XG are active production parts manufactured by Isocom Components 2004 LTD with identical electrical and mechanical specifications. Selection between these parts is based on inventory availability and supply chain considerations. The ILQ1G currently has 700 units in stock, while the ILQ1XG has 849 units available. Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. Through-hole 16-DIP packaging ensures compatibility with standard PCB assembly processes. Either part is suitable for direct substitution in applications requiring 5300Vrms isolation with single-channel transistor output configuration.

Frequently Asked Questions (FAQ)

Q: Can ILQ1XG replace ILQ1G in existing designs?

A: Yes. The ILQ1XG is a parametric equivalent with identical isolation voltage (5300Vrms), current transfer ratio (20-300% @ 10mA), output specifications (50V max, 50mA per channel), and 16-DIP through-hole package. Direct substitution is supported without circuit modification.

Q: Are there differences in isolation performance between these parts?

A: No. Both parts specify 5300Vrms isolation voltage and are manufactured by the same supplier. Isolation performance is equivalent.

Q: Do both parts use the same package footprint?

A: Yes. Both ILQ1G and ILQ1XG use 16-DIP (0.400", 10.16mm) through-hole packaging. PCB layouts and assembly processes remain unchanged.

Q: What is the current transfer ratio specification and why does it matter?

A: Current transfer ratio ranges from 20% to 300% @ 10mA for both parts. This parameter defines the optical coupling efficiency between the LED input and transistor output. Identical specifications ensure equivalent signal transmission characteristics.

Q: Are compliance certifications identical?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for industrial applications.

Q: Which part should be selected based on availability?

A: Selection depends on supply chain requirements. ILQ1XG has higher current inventory (849 units) compared to ILQ1G (700 units). Both are active production parts with equivalent performance.