MCC250-08IO1 Equivalent & Substitute Parts

Part Overview

The MCC250-08IO1 is a dual SCR thyristor module rated for 800 V off-state voltage with 450 A RMS on-state current capacity. Manufactured by IXYS, this component features series-connected SCRs in a Y2-DCB chassis mount package for high-power switching applications. The product is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	450 A
Current - On State (It (AV)) (Max)	287 A
Voltage - Gate Trigger (Vgt) (Max)	2 V
Current - Gate Trigger (Igt) (Max)	150 mA
Current - Hold (Ih) (Max)	150 mA
Operating Temperature Range	-40°C to 140°C (TJ)
Mounting Type	Chassis Mount
Package / Case	Y2-DCB
Number of SCRs	2 SCRs (Series Connection)

Substitute Part Grouping Explanation

The MCC310-08IO1 qualifies as a direct substitute based on the following alignment of critical electrical and mechanical parameters:

Voltage Rating: Both parts maintain 800 V off-state voltage, ensuring compatibility in the same circuit topology
Gate Trigger Characteristics: Identical Vgt (Max) of 2 V and Igt (Max) of 150 mA enable direct gate drive circuit compatibility
Hold Current: Both specify 150 mA maximum hold current, maintaining consistent latching behavior
Operating Temperature Range: Identical -40°C to 140°C (TJ) range ensures thermal compatibility
Mounting Configuration: Both are chassis mount with series-connected SCR structure
On-State Current Capacity: The MCC310-08IO1 provides higher current ratings (500 A RMS vs. 450 A RMS), making it suitable for applications within or below the original specification

The MCC310-08IO1 is classified as active product status with ROHS3 compliance and REACH unaffected designation, providing long-term availability and regulatory compliance advantages over the obsolete MCC250-08IO1.

Parameter Comparison

Parameter	MCC250-08IO1	MCC310-08IO1	Compatibility
Voltage - Off State	800 V	800 V	Identical
Current - On State (It (AV)) (Max)	287 A	320 A	MCC310 exceeds requirement
Current - On State (It (RMS)) (Max)	450 A	500 A	MCC310 exceeds requirement
Voltage - Gate Trigger (Vgt) (Max)	2 V	2 V	Identical
Current - Gate Trigger (Igt) (Max)	150 mA	150 mA	Identical
Current - Non Rep. Surge 50, 60Hz (Itsm)	9000 A, 9600 A	9200 A, 9800 A	MCC310 exceeds requirement
Current - Hold (Ih) (Max)	150 mA	150 mA	Identical
Operating Temperature Range	-40°C to 140°C (TJ)	-40°C to 140°C (TJ)	Identical
Mounting Type	Chassis Mount	Chassis Mount	Identical
Number of SCRs, Structure	2 SCRs, Series Connection	2 SCRs, Series Connection	Identical
Product Status	Obsolete	Active	MCC310 offers continued support

Engineering Selection Recommendations

The MCC310-08IO1 is the direct equivalent for MCC250-08IO1 applications. Selection is based on the following engineering criteria:

Electrical Compatibility: All gate trigger parameters, hold current specifications, and operating temperature ranges are identical. The MCC310-08IO1 provides higher on-state current capacity (500 A RMS vs. 450 A RMS) and surge current ratings, making it suitable for designs operating at or below the original MCC250-08IO1 specifications.

Product Status and Compliance: The MCC310-08IO1 is active product with ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment and long-term supply chain availability. The MCC250-08IO1 obsolete status creates supply and support constraints.

Mechanical Compatibility: Both parts feature identical chassis mount configuration and series-connected SCR topology, enabling direct board-level integration without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can MCC310-08IO1 directly replace MCC250-08IO1 in existing designs?

A: Yes. The MCC310-08IO1 maintains identical voltage ratings, gate trigger characteristics, hold current, and operating temperature range. Higher current capacity ratings ensure compatibility with applications designed for the MCC250-08IO1.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Off-state voltage (800 V), gate trigger voltage and current (2 V, 150 mA), hold current (150 mA), and operating temperature range (-40°C to 140°C) must remain constant. The MCC310-08IO1 meets all these requirements.

Q: Are there packaging differences between these parts?

A: Both parts use chassis mount configuration with Y2-DCB package structure. The MCC310-08IO1 is specified as a module package variant, but maintains identical mechanical mounting compatibility.

Q: Why is the MCC310-08IO1 preferred over the MCC250-08IO1?

A: The MCC310-08IO1 is active product with ROHS3 compliance, providing regulatory compliance, continued manufacturer support, and supply chain availability. The MCC250-08IO1 is obsolete.

Q: Are gate drive circuits compatible between these parts?

A: Yes. Identical Vgt (Max) of 2 V and Igt (Max) of 150 mA specifications ensure gate drive circuit compatibility without modification.

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