VCK105-14IO7 Equivalent & Substitute Parts

Part Overview

The VCK105-14IO7 is a thyristor module manufactured by IXYS, designed for high-voltage switching applications. This SCR module features a 1.4 kV off-state voltage rating with a 105 A average on-state current capacity and common cathode configuration for dual SCR operation. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, redesign, and procurement planning.

Substiute Parts

VCK105-14IO7

IXYSIn Stock: 943VCK105-14IO7 Datasheet

Current PartRFQ

VS-VSKU105/14

Vishay General Semiconductor - Diodes DivisionIn Stock: 1200VS-VSKU105/14 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the VCK105-14IO7 is determined by the following critical parameters:

• Voltage Rating (Off State): Must equal 1.4 kV to ensure blocking capability in the application circuit
• Average On-State Current (It (AV)): Must equal or exceed 105 A to handle the specified load current
• Gate Trigger Characteristics: Vgt and Igt must be compatible with existing gate drive circuitry
• Hold Current (Ih): Must not exceed application requirements to prevent unintended latching
• Structure: Must maintain common cathode configuration for dual SCR modules
• Mounting Type: Must support chassis mount installation
• Operating Temperature Range: Must encompass the application's thermal operating window

The VS-VSKU105/14 manufactured by Vishay General Semiconductor qualifies as a functional equivalent based on matching voltage ratings, average on-state current, gate trigger specifications, hold current parameters, dual SCR structure, and chassis mount configuration.

Parameter Comparison

Engineering Selection Recommendations

The VS-VSKU105/14 is classified as active product status, providing long-term availability and supply chain continuity compared to the obsolete VCK105-14IO7. Both devices are REACH Unaffected and assigned ECCN EAR99 classification.

The Vishay substitute meets the primary electrical requirements for voltage blocking and average on-state current. However, the following design considerations apply:

• Gate Drive Circuit: The VS-VSKU105/14 specifies a maximum gate trigger voltage of 2.5 V versus 1.5 V for the original part. Existing gate drive circuits must be verified for compatibility or adjusted to accommodate the higher threshold.
• RMS Current Rating: The substitute is rated at 165 A RMS versus 180 A RMS for the original. Thermal analysis of the application must confirm that the lower RMS rating is acceptable for the duty cycle and cooling conditions.
• Hold Current: The substitute specifies 250 mA maximum hold current versus 200 mA for the original. Circuit design must ensure that gate current removal reliably turns off the device without unintended latching.
• Package Transition: The substitute uses ADD-A-PAK (3 + 4) packaging instead of ECO-PAC2. Physical layout, mounting hole patterns, and thermal interface requirements must be evaluated for PCB or chassis integration.

Frequently Asked Questions (FAQ)

Q: Can the VS-VSKU105/14 be used as a direct drop-in replacement for the VCK105-14IO7?

A: The VS-VSKU105/14 is electrically equivalent for voltage and average current ratings but requires verification of gate drive compatibility due to the higher gate trigger voltage specification (2.5 V vs. 1.5 V). Package differences (ADD-A-PAK vs. ECO-PAC2) necessitate mechanical layout review. Direct substitution is not guaranteed without circuit and mechanical validation.

Q: What is the impact of the lower RMS current rating on the substitute part?

A: The VS-VSKU105/14 is rated at 165 A RMS compared to 180 A RMS for the VCK105-14IO7. This difference affects thermal performance under continuous or high-duty-cycle operation. Applications operating near the 180 A RMS limit must perform thermal analysis to confirm the substitute can dissipate the required power within acceptable junction temperature limits.

Q: How do the gate trigger specifications differ between these parts?

A: The VCK105-14IO7 specifies a maximum gate trigger voltage (Vgt) of 1.5 V, while the VS-VSKU105/14 specifies 2.5 V. Both share the same maximum gate trigger current (Igt) of 150 mA. Gate drive circuits designed for the lower threshold must be adjusted or verified to reliably trigger the substitute device.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts are REACH Unaffected and classified as EAR99 under export control regulations. The VS-VSKU105/14 carries RoHS3 compliance certification, whereas the VCK105-14IO7 does not specify RoHS status. For applications requiring RoHS compliance, the substitute provides documented conformance.

Q: What package considerations apply when switching from ECO-PAC2 to ADD-A-PAK?

A: ECO-PAC2 and ADD-A-PAK are distinct mechanical packages with different mounting hole patterns, lead configurations, and thermal interface designs. Physical layout, PCB footprint, and chassis mounting must be re-evaluated. Thermal interface material and mounting pressure specifications may differ between packages.