MCT2ES(TA) Equivalent & Substitute Parts

Part Overview

The MCT2ES(TA) is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides galvanic isolation up to 5000Vrms with a single-channel transistor output configuration in a 6-SMD surface mount package. The device is classified as Active product status with full RoHS3 compliance and MSL Level 1 rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges for this optoisolator category. Substitution becomes necessary due to inventory availability, supply chain optimization, or design flexibility requirements while maintaining functional equivalence.

Substiute Parts

MCT2ES(TA)

Everlight Electronics Co LtdIn Stock: 813MCT2ES(TA) Datasheet

Current PartRFQ

MCT2ESM

Fairchild SemiconductorIn Stock: 5374MCT2ESM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the MCT2ES(TA) optoisolator is based on the following critical parameters that define functional equivalence:

Isolation Voltage Compatibility: The substitute part must maintain isolation voltage at or above 5000Vrms to ensure equivalent safety and performance in high-voltage isolation applications.

Channel Configuration: Single-channel (1 Channel) output is required for direct functional replacement.

Current Transfer Ratio: Minimum CTR of 20% @ 10mA establishes the baseline for optical coupling efficiency.

Output Stage Type: Transistor with Base output configuration must be preserved for circuit compatibility.

Switching Performance: Turn-on and turn-off times, along with rise and fall times, determine signal fidelity in switching applications.

Package and Mounting: 6-SMD, Gull Wing surface mount package ensures mechanical and PCB assembly compatibility.

Voltage and Saturation Ratings: Output voltage maximum and Vce saturation specifications define the output stage operating envelope.

The MCT2ESM from Fairchild Semiconductor qualifies as a substitute based on these parameters while offering enhanced isolation voltage (7500Vpk) and improved switching speed characteristics.

Parameter Comparison

Engineering Selection Recommendations

MCT2ES(TA) Selection Criteria:

Select the MCT2ES(TA) when the extended operating temperature range of -55°C to 110°C is required for the application. This part is suitable for industrial and automotive environments requiring full temperature coverage. The higher maximum output voltage rating of 80V accommodates applications with elevated output stage voltage requirements. Product status is Active with established supply availability (736 Pcs in stock). RoHS3 compliance and MSL Level 1 rating support standard manufacturing and storage conditions.

MCT2ESM Selection Criteria:

Select the MCT2ESM when faster switching performance is required. The reduced turn-on/turn-off times (2µs vs 3µs) and improved rise/fall times provide enhanced signal fidelity in high-frequency switching applications. The higher isolation voltage rating (7500Vpk vs 5000Vrms) offers additional safety margin in high-voltage isolation circuits. Product status is Active with higher inventory availability (5300 Pcs in stock). The narrower operating temperature range (-40°C to 100°C) is suitable for commercial and industrial applications within this envelope. The lower maximum output voltage (30V) is acceptable for applications not requiring the full 80V output capability.

Substitution Constraints:

The MCT2ESM output voltage maximum of 30V is lower than the MCT2ES(TA) specification of 80V. Verify that the application output stage voltage does not exceed 30V before selecting the MCT2ESM as a substitute. The MCT2ESM operating temperature range does not extend to -55°C; applications requiring operation below -40°C must use the MCT2ES(TA).

Frequently Asked Questions (FAQ)

Q: Can MCT2ESM replace MCT2ES(TA) in all applications?

A: The MCT2ESM is functionally equivalent for most applications due to matching channel configuration, CTR specification, and package type. However, two constraints apply: (1) If the application requires output voltage operation above 30V, the MCT2ESM cannot be used due to its lower Voltage - Output (Max) rating. (2) If the application requires operating temperatures below -40°C, the MCT2ESM cannot be used due to its narrower temperature range. Verify both parameters against your circuit requirements before substitution.

Q: What is the significance of the isolation voltage difference between 5000Vrms and 7500Vpk?

A: The MCT2ESM provides higher isolation voltage capability (7500Vpk) compared to the MCT2ES(TA) (5000Vrms). This means the MCT2ESM can be used in applications requiring higher isolation voltage without degradation. The MCT2ESM is a direct substitute for isolation voltage requirements up to 5000Vrms and also supports applications requiring up to 7500Vpk isolation. The higher rating does not create incompatibility; it provides additional design margin.

Q: Are the switching time differences between these parts critical?

A: The MCT2ESM offers faster switching performance with turn-on/turn-off times of 2µs compared to 3µs for the MCT2ES(TA). This 1µs improvement applies to both turn-on and turn-off transitions. For applications operating at frequencies where 1µs switching delay is significant, the MCT2ESM provides superior performance. For lower-frequency applications, both parts are functionally equivalent in this parameter.

Q: Can both parts be used interchangeably in the same PCB assembly?

A: Yes, both parts use identical 6-SMD, Gull Wing surface mount packaging. PCB footprints, solder pad layouts, and assembly processes are compatible. No PCB redesign is required when substituting between these parts. However, verify the specific electrical constraints (output voltage and operating temperature) before assembly to ensure the selected part meets circuit requirements.

Q: What does RoHS3 compliance mean for these parts?

A: RoHS3 compliance indicates that both the MCT2ES(TA) and MCT2ESM meet Restriction of Hazardous Substances Directive requirements. These parts do not contain lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers in concentrations exceeding specified thresholds. RoHS3 compliance is required for most commercial and industrial applications in regulated markets.

Q: What is MSL Level 1 and why does it matter?

A: MSL (Moisture Sensitivity Level) Level 1 indicates that the MCT2ES(TA) has unlimited shelf life and requires no special moisture control during storage or handling. This is the least restrictive moisture sensitivity classification. Standard warehouse storage conditions are acceptable without desiccant packs or controlled humidity environments. This simplifies inventory management and reduces handling costs.