MCT2E300 Equivalent & Substitute Parts

Part Overview

The MCT2E300 is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 5300Vrms isolation rating. This component features a single-channel configuration in a 6-DIP package and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity and procurement planning in applications currently utilizing this component.

Substiute Parts

MCT2E300

onsemiIn Stock: 1168MCT2E300 Datasheet

Current PartRFQ

MCT2EX

Isocom Components 2004 LTDIn Stock: 1834MCT2EX Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCT2E300 is determined by the following critical parameters:

• Isolation Voltage: 5300Vrms (exact match required)
• Number of Channels: 1 (single-channel configuration)
• Output Type: Transistor with Base
• Package / Case: 6-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 100°C (minimum requirement)

The MCT2EX qualifies as a substitute part because it maintains identical specifications across all critical substitution parameters. While the MCT2EX exhibits different performance characteristics in Current Transfer Ratio (50% @ 10mA versus 20% @ 10mA) and switching times, these represent performance enhancements rather than incompatibilities. The MCT2EX is pin-compatible and functionally interchangeable within the same electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

The MCT2EX is the qualified substitute for the MCT2E300 based on the following engineering criteria:

Mechanical Compatibility: Both parts utilize identical 6-DIP through-hole packaging, ensuring direct PCB footprint compatibility without layout modifications.

Electrical Compatibility: The MCT2EX maintains the same isolation voltage rating (5300Vrms), output voltage maximum (30V), and saturation voltage (400mV), confirming functional equivalence in isolation and switching applications.

Product Status Advantage: The MCT2EX is classified as Active, providing assured long-term availability and supply chain stability compared to the obsolete MCT2E300.

Regulatory Compliance: The MCT2EX carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. Both parts maintain REACH Unaffected status.

Performance Characteristics: The MCT2EX demonstrates superior current transfer ratio (50% @ 10mA) and faster switching response compared to the MCT2E300, representing performance enhancement in the substitution.

Frequently Asked Questions (FAQ)

Q: Can the MCT2EX be used as a direct replacement for the MCT2E300 in existing designs?

A: Yes. The MCT2EX is pin-compatible and maintains identical isolation voltage, output type, package configuration, and operating temperature range. No PCB modifications are required.

Q: What are the key differences between the MCT2E300 and MCT2EX?

A: The primary differences are product status (obsolete versus active), current transfer ratio (20% versus 50% @ 10mA), switching times, and forward current rating. The MCT2EX offers improved performance characteristics while maintaining electrical and mechanical compatibility.

Q: Are there any compliance or certification differences?

A: The MCT2EX carries ROHS3 compliance certification, whereas the MCT2E300 does not specify RoHS status. Both parts maintain REACH Unaffected status and identical ECCN and HTSUS classifications.

Q: Does the higher current transfer ratio of the MCT2EX affect circuit operation?

A: The higher current transfer ratio (50% versus 20%) represents improved efficiency in the optoisolator's input-to-output signal coupling. This does not create incompatibility; circuits designed for the MCT2E300 will function with the MCT2EX.

Q: Is the MCT2EX available in the same packaging options?

A: The MCT2EX is supplied in Tube packaging, while the MCT2E300 packaging type is not specified. Both utilize the identical 6-DIP (0.300", 7.62mm) physical package for through-hole mounting.

Q: What is the isolation voltage rating, and is it identical between both parts?

A: Both the MCT2E300 and MCT2EX maintain a 5300Vrms isolation voltage rating, meeting high-voltage isolation requirements in industrial and power management applications.