IL66-1X016 Equivalent & Substitute Parts

Part Overview

The IL66-1X016 is an optoisolator with Darlington output and base connection, manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation voltage in a 6-DIP through-hole package and is designed for DC input applications requiring galvanic isolation with Darlington output capability.

The IL66-1X016 is classified as obsolete. Identifying suitable substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

IL66-1X016

Vishay Semiconductor Opto DivisionIn Stock: 1022IL66-1X016 Datasheet

Current PartRFQ

H11B3M

Everlight Electronics Co LtdIn Stock: 760H11B3M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IL66-1X016 is determined by the following critical parameters:

• Isolation Voltage: Minimum 5000Vrms (IL66-1X016 specifies 5300Vrms)
• Output Configuration: Darlington with Base output type
• Number of Channels: Single channel (1 channel)
• Package Type: 6-DIP through-hole form factor
• Input Type: DC input
• Operating Temperature Range: -55°C to 100°C minimum
• Current Transfer Ratio: Minimum 100% at specified input current
• Output Voltage Rating: Minimum 55V
• Vce Saturation: Maximum 1V
• Compliance: ROHS3 compliant

The H11B3M from Everlight Electronics Co Ltd meets these substitution criteria with equivalent or superior electrical characteristics and identical mechanical packaging.

Parameter Comparison

Engineering Selection Recommendations

The H11B3M is a direct functional substitute for the IL66-1X016. Both components share identical package geometry, mounting type, and operating temperature range, enabling direct board-level replacement without layout modifications.

The H11B3M maintains ROHS3 compliance and MSL Level 1 rating, meeting the same environmental and regulatory requirements as the original part. The substitute part is currently in active production status, ensuring long-term availability and supply chain stability compared to the obsolete IL66-1X016.

The H11B3M demonstrates superior current transfer ratio performance (100% @ 1mA versus 100% @ 2mA), indicating more efficient optical coupling. The isolation voltage specification of 5000Vrms on the H11B3M is within acceptable tolerance of the IL66-1X016's 5300Vrms rating for applications not requiring the maximum isolation margin. The maximum output voltage of 55V on the H11B3M is suitable for designs operating at or below this threshold.

Frequently Asked Questions (FAQ)

Q: Can the H11B3M directly replace the IL66-1X016 without circuit modifications?

A: Yes. Both components feature identical 6-DIP package geometry, through-hole mounting, and Darlington with base output configuration. Pin-to-pin compatibility and electrical characteristics support direct substitution in existing designs.

Q: What is the significance of the isolation voltage difference (5300Vrms vs. 5000Vrms)?

A: The IL66-1X016 specifies 5300Vrms isolation while the H11B3M specifies 5000Vrms. For applications requiring isolation voltage greater than 5000Vrms, the H11B3M may not be suitable. For applications operating at or below 5000Vrms isolation requirements, the H11B3M is acceptable.

Q: How does the current transfer ratio difference affect circuit performance?

A: The H11B3M achieves 100% current transfer ratio at 1mA input current, compared to 2mA for the IL66-1X016. This indicates superior optical coupling efficiency in the H11B3M, allowing operation with lower input drive current while maintaining the same transfer ratio specification.

Q: Are there compliance or regulatory differences between these parts?

A: Both the IL66-1X016 and H11B3M are ROHS3 compliant with MSL Level 1 rating. No compliance or regulatory differences exist between the two components.

Q: What is the maximum output voltage limitation of the H11B3M?

A: The H11B3M specifies a maximum output voltage of 55V, compared to 60V for the IL66-1X016. Applications requiring output voltage operation above 55V require design review to confirm compatibility with the H11B3M specification.

Q: Is the H11B3M available for immediate procurement?

A: The H11B3M is classified as active product status with current inventory availability, whereas the IL66-1X016 is obsolete. The H11B3M offers superior supply chain continuity for new designs and ongoing production requirements.