VCK105-16IO7 Equivalent & Substitute Parts

Part Overview

The VCK105-16IO7 is a thyristor module manufactured by IXYS, designed for high-voltage switching applications. This SCR module features a 1.6 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.

Key Parameters

Parameter	Value
Voltage - Off State	1.6 kV
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
Mounting Type	Chassis Mount
Package / Case	ECO-PAC2

Substitute Part Grouping Explanation

Substitution eligibility for the VCK105-16IO7 is determined by the following critical parameters:

Voltage Rating (Off State): Must equal 1.6 kV to maintain circuit voltage protection
Average On-State Current (It (AV)): Must equal or exceed 105 A
Gate Trigger Characteristics: Vgt and Igt must be compatible with existing gate drive circuitry
Hold Current (Ih): Must not exceed circuit holding requirements
Structure: Must maintain common cathode configuration for dual SCR operation
Mounting Type: Must support chassis mount installation
Operating Temperature Range: Must encompass the application's thermal operating window

The VS-VSKU105/16 manufactured by Vishay General Semiconductor qualifies as a functional equivalent based on matching voltage ratings, SCR count, structure, and mounting type, with on-state current ratings that meet or exceed the original specification.

Parameter Comparison

Parameter	VCK105-16IO7 (IXYS)	VS-VSKU105/16 (Vishay)
Voltage - Off State	1.6 kV	1.6 kV
Current - On State (It (AV)) (Max)	105 A	105 A
Current - On State (It (RMS)) (Max)	180 A	165 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	2.5 V
Current - Gate Trigger (Igt) (Max)	150 mA	150 mA
Current - Hold (Ih) (Max)	200 mA	250 mA
Operating Temperature Range	-40°C to 125°C (TJ)	-40°C to 130°C (TJ)
Structure	Common Cathode - All SCRs	Common Cathode - All SCRs
Number of SCRs	2	2
Mounting Type	Chassis Mount	Chassis Mount
Package / Case	ECO-PAC2	ADD-A-PAK (3 + 4)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The VS-VSKU105/16 is available as an active product from Vishay General Semiconductor, providing supply continuity for applications currently using the obsolete VCK105-16IO7. Both devices share identical voltage ratings, average on-state current specifications, and dual SCR common cathode architecture.

The VS-VSKU105/16 exhibits a higher gate trigger voltage (2.5 V maximum versus 1.5 V), which requires gate drive circuit compatibility assessment. The substitute part also features a higher hold current specification (250 mA versus 200 mA) and slightly reduced RMS current rating (165 A versus 180 A). The operating temperature range of the substitute extends to 130°C, providing additional thermal margin.

The VS-VSKU105/16 is RoHS3 compliant, whereas the original part's RoHS status is not specified. Both devices carry identical ECCN and HTSUS classifications and are REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can the VS-VSKU105/16 directly replace the VCK105-16IO7 in existing applications?

A: Direct replacement requires verification of gate drive circuit compatibility. The substitute part specifies a maximum gate trigger voltage of 2.5 V compared to 1.5 V for the original. Gate drive circuits designed for the lower threshold may require adjustment. The matching average on-state current (105 A) and voltage rating (1.6 kV) support functional equivalence for current-carrying capacity.

Q: What is the significance of the different package designations (ECO-PAC2 versus ADD-A-PAK)?

A: Both packages support chassis mount installation. Physical dimensions and mounting hole patterns differ between ECO-PAC2 and ADD-A-PAK (3 + 4) configurations. Mechanical fit verification is required before installation.

Q: How do the RMS current ratings differ between these parts?

A: The VCK105-16IO7 specifies 180 A RMS maximum, while the VS-VSKU105/16 specifies 165 A RMS maximum. Applications operating at or near the original 180 A RMS specification require thermal analysis to confirm the substitute's adequacy.

Q: Are there compliance differences between the two parts?

A: The VS-VSKU105/16 is RoHS3 compliant and active in production. The VCK105-16IO7 is obsolete. Both carry identical ECCN (EAR99) and HTSUS (8541.30.0080) classifications and are REACH unaffected.

Q: What is the hold current difference, and does it affect substitution?

A: The VS-VSKU105/16 specifies a maximum hold current of 250 mA versus 200 mA for the original. This higher specification must be compatible with circuit holding requirements and gate drive characteristics to ensure reliable commutation.

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