VCK105-08IO7 Equivalent & Substitute Parts

Part Overview

The VCK105-08IO7 is a thyristor module manufactured by IXYS, designed for high-voltage switching applications. This SCR module features an 800V off-state voltage rating with a 105A average on-state current capacity and common cathode configuration suitable for chassis mount installations. The product is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and new design implementations where legacy component compatibility is required.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (AV)) (Max)	105 A
Current - On State (It (RMS)) (Max)	180 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	150 mA
Current - Hold (Ih) (Max)	200 mA
Operating Temperature Range	-40°C to 125°C (TJ)
Structure	Common Cathode - All SCRs
Number of SCRs	2 SCRs
Mounting Type	Chassis Mount
Package / Case	ECO-PAC2

Substitute Part Grouping Explanation

Substitution of the VCK105-08IO7 is determined by strict equivalence across the following critical parameters:

Voltage Rating (Off State): 800V minimum requirement
Average On-State Current: 105A minimum capacity
Gate Trigger Characteristics: Vgt and Igt values within acceptable operational margins
Structural Configuration: Common cathode topology with 2 SCRs
Thermal Operating Range: Compatibility with -40°C to 125°C minimum
Mounting Configuration: Chassis mount capability

The VS-VSKU105/08 manufactured by Vishay General Semiconductor meets these substitution criteria through equivalent electrical performance across all primary switching parameters and compatible mechanical mounting requirements.

Parameter Comparison

Parameter	VCK105-08IO7 (IXYS)	VS-VSKU105/08 (Vishay)	Compatibility
Voltage - Off State	800 V	800 V	Equivalent
Current - On State (It (AV)) (Max)	105 A	105 A	Equivalent
Current - On State (It (RMS)) (Max)	180 A	165 A	Compatible
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	2.5 V	Compatible
Current - Gate Trigger (Igt) (Max)	150 mA	150 mA	Equivalent
Current - Hold (Ih) (Max)	200 mA	250 mA	Compatible
Operating Temperature Range	-40°C to 125°C	-40°C to 130°C	Compatible
Structure	Common Cathode - All SCRs	Common Cathode - All SCRs	Equivalent
Number of SCRs	2 SCRs	2 SCRs	Equivalent
Mounting Type	Chassis Mount	Chassis Mount	Equivalent

Engineering Selection Recommendations

The VCK105-08IO7 is classified as obsolete. The VS-VSKU105/08 is an active product with equivalent electrical specifications and compatible mechanical characteristics. The Vishay substitute maintains the same 800V voltage class, 105A average current rating, and common cathode SCR configuration required for direct functional replacement.

The VS-VSKU105/08 provides enhanced thermal operating range (-40°C to 130°C versus -40°C to 125°C) and holds RoHS3 compliance certification, supporting modern regulatory requirements. Both components share identical gate trigger current specifications (150 mA) and equivalent mounting configurations for chassis installation.

Frequently Asked Questions (FAQ)

Q: Can the VS-VSKU105/08 directly replace the VCK105-08IO7 in existing applications?

A: Yes. Both components maintain equivalent 800V off-state voltage, 105A average on-state current, common cathode configuration, and chassis mount capability. The gate trigger voltage specification of the Vishay part (2.5V maximum) is higher than the IXYS part (1.5V maximum), but remains within acceptable operational parameters for standard gate drive circuits.

Q: What is the significance of the different RMS current ratings (180A versus 165A)?

A: The RMS current rating reflects thermal dissipation capacity under continuous AC operation. The VCK105-08IO7 supports 180A RMS while the VS-VSKU105/08 supports 165A RMS. Both exceed the 105A average current requirement. Application-specific thermal analysis is necessary if continuous RMS current operation approaches these limits.

Q: Are the package types interchangeable?

A: The VCK105-08IO7 uses ECO-PAC2 packaging while the VS-VSKU105/08 uses ADD-A-PAK (3 + 4) packaging. Both are chassis mount configurations with equivalent electrical connectivity. Physical mounting dimensions and terminal layouts must be verified against application-specific mechanical constraints before implementation.

Q: What compliance differences exist between these components?

A: The VS-VSKU105/08 holds RoHS3 compliance certification, while the VCK105-08IO7 does not specify RoHS status. Both components are REACH unaffected and classified under ECCN EAR99. Modern applications requiring RoHS compliance should utilize the Vishay substitute.

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