ISQ204 Equivalent & Substitute Parts

Part Overview

The ISQ204 is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation with a single channel, transistor-based output configuration in a 16-DIP package. The ISQ204 is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component interchangeability in circuit designs requiring optoisolation functionality.

Substiute Parts

ISQ204

Isocom Components 2004 LTDIn Stock: 1171ISQ204 Datasheet

Current PartRFQ

ILQ2

Isocom Components 2004 LTDIn Stock: 1791ILQ2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISQ204 is determined by alignment of the following critical parameters:

• Package / Case: Both parts must use 16-DIP (0.300", 7.62mm) through-hole mounting
• Number of Channels: Single channel configuration required
• Output Type: Transistor output topology
• Voltage - Output (Max): 70V maximum output voltage
• Current - Output / Channel: 50mA per channel capacity
• Vce Saturation (Max): 400mV maximum saturation voltage
• Operating Temperature Range: -25°C ~ 100°C
• Input Type: DC input
• Voltage - Forward (Vf) (Typ): 1.2V typical forward voltage
• Current - DC Forward (If) (Max): 50mA maximum forward current
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The ILQ2 meets all substitution criteria for the ISQ204 within these parameter boundaries.

Parameter Comparison

Engineering Selection Recommendations

Both the ISQ204 and ILQ2 are active products with identical RoHS3 compliance, REACH unaffected status, and EAR99 export classification. Both components maintain unlimited moisture sensitivity rating (MSL 1) and are manufactured by the same supplier in identical 16-DIP packages.

The ILQ2 provides higher isolation voltage (5300Vrms versus 7.5Vpk) and extended current transfer ratio range (100% to 500% versus 200% to 400%), making it suitable for applications requiring enhanced isolation performance. Both parts share identical output voltage, output current, saturation voltage, and operating temperature specifications, ensuring functional compatibility in circuit designs.

Selection between these parts depends on isolation voltage requirements and current transfer ratio specifications for the target application. Both parts maintain full regulatory compliance and equivalent mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the ILQ2 directly replace the ISQ204 in existing circuit designs?

A: Yes, the ILQ2 is mechanically and electrically compatible with the ISQ204. Both components use identical 16-DIP through-hole packaging, share the same output voltage and current ratings, and operate across the same temperature range. Substitution is valid when isolation voltage and current transfer ratio specifications of the ILQ2 meet or exceed application requirements.

Q: What are the key differences between ISQ204 and ILQ2?

A: The primary differences are isolation voltage rating and current transfer ratio range. The ILQ2 provides 5300Vrms isolation compared to the ISQ204's 7.5Vpk, and offers a broader current transfer ratio range of 100% to 500% versus the ISQ204's 200% to 400%. All other electrical and mechanical parameters are identical.

Q: Are both parts available in the same package configuration?

A: Yes, both the ISQ204 and ILQ2 are supplied in 16-DIP (0.300", 7.62mm) through-hole packages with identical pin spacing and mounting requirements.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes, both components are ROHS3 compliant, REACH unaffected, classified as EAR99 for export purposes, and carry identical HTSUS codes. Both maintain MSL 1 (unlimited) moisture sensitivity rating.

Q: What inventory status applies to these parts?

A: The ISQ204 has 1152 pieces in stock, while the ILQ2 has 1739 pieces in stock, both listed as new original inventory.