MCT66 Optoisolator Equivalent & Substitute Parts

Part Overview

The MCT66 is a dual-channel optoisolator with transistor output, manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation up to 5300Vrms across two independent channels in an 8-DIP through-hole package. The MCT66 is classified as an active product with full inventory availability. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across isolation voltage, channel configuration, output characteristics, and package specifications.

Substiute Parts

MCT66

Isocom Components 2004 LTDIn Stock: 1720MCT66 Datasheet

Current PartRFQ

MCT66X

Isocom Components 2004 LTDIn Stock: 968MCT66X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCT66 is determined by strict equivalence across the following critical parameters:

• Isolation voltage: 5300Vrms
• Number of channels: 2
• Output configuration: Transistor output
• Current transfer ratio minimum: 6% @ 10mA
• Maximum output voltage: 30V
• Maximum output current per channel: 50mA
• Maximum Vce saturation: 400mV
• Package type: 8-DIP (0.300", 7.62mm)
• Mounting method: Through Hole

The MCT66X meets all specified electrical and mechanical parameters and is classified as a parametric equivalent within the MCT66 series.

Parameter Comparison

Engineering Selection Recommendations

Both MCT66 and MCT66X are active products with full regulatory compliance. Selection between these parts is based on inventory availability and supply chain considerations. The MCT66 maintains 1695 units in stock, while the MCT66X maintains 864 units. Both parts carry ROHS3 compliance, REACH unaffected status, and identical electrical specifications. No technical differentiation exists between these components for circuit design purposes.

Frequently Asked Questions (FAQ)

Q: Can MCT66X be used as a direct replacement for MCT66?

A: Yes. The MCT66X is a parametric equivalent with identical electrical characteristics, isolation voltage, channel configuration, output specifications, and package dimensions. Direct substitution is supported without circuit modification.

Q: Are there any package or pinout differences between MCT66 and MCT66X?

A: No. Both parts use the 8-DIP (0.300", 7.62mm) through-hole package with identical pinout and mounting requirements.

Q: What compliance certifications apply to both parts?

A: Both MCT66 and MCT66X are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (unlimited moisture sensitivity level).

Q: How do the current transfer ratios compare?

A: Both parts specify a minimum current transfer ratio of 6% at 10mA input current, ensuring equivalent optical coupling efficiency.

Q: Are operating temperature ranges identical?

A: Yes. Both parts operate across the -25°C to 100°C temperature range with identical thermal specifications.