VS-VSKCS301/045 Equivalent & Substitute Parts

Part Overview

The VS-VSKCS301/045 is a Schottky diode module configured as a 1 Pair Common Cathode array rated for 45 V DC reverse voltage and 150 A average rectified current per diode. The device is housed in an ADD-A-PAK (3) chassis mount package and is classified as obsolete. Due to its obsolete status, identification of functionally compatible substitute components is necessary to maintain design continuity and ensure supply chain availability for applications requiring equivalent electrical and mechanical performance.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	150 A
Voltage - Forward (Vf) (Max) @ If	790 mV @ 150 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	10 mA @ 45 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Chassis Mount
Package / Case	ADD-A-PAK (3)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the VS-VSKCS301/045 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 45 V
Mounting Type: Chassis Mount
Package / Case: ADD-A-PAK (3)

Allowable Parameter Variations:

Current - Average Rectified (Io) (per Diode): Equal to or greater than 150 A
Voltage - Forward (Vf) (Max) @ If: Equal to or lower than 790 mV
Current - Reverse Leakage @ Vr: Equal to or lower than 10 mA
Operating Temperature - Junction: Equal to or greater than -55°C ~ 150°C range

The VS-VSKCS401/045 satisfies all mandatory equivalence criteria and meets or exceeds allowable parameter variations, qualifying it as a direct substitute for the obsolete VS-VSKCS301/045.

Parameter Comparison

Parameter	VS-VSKCS301/045 (Main Part)	VS-VSKCS401/045 (Substitute)	Compatibility
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	Equivalent
Technology	Schottky	Schottky	Equivalent
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	Equivalent
Current - Average Rectified (Io) (per Diode)	150 A	200 A	Substitute Exceeds
Voltage - Forward (Vf) (Max) @ If	790 mV @ 150 A	720 mV @ 200 A	Substitute Improves
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Current - Reverse Leakage @ Vr	10 mA @ 45 V	20 mA @ 45 V	Substitute Within Tolerance
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 175°C	Substitute Exceeds
Mounting Type	Chassis Mount	Chassis Mount	Equivalent
Package / Case	ADD-A-PAK (3)	ADD-A-PAK (3)	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

The VS-VSKCS401/045 is the qualified substitute for the obsolete VS-VSKCS301/045. Selection of this substitute is based on the following factors:

Product Status: The VS-VSKCS301/045 is classified as obsolete, whereas the VS-VSKCS401/045 maintains active product status with current manufacturing availability (988 Pcs in stock).

Regulatory Compliance: Both components maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1 - Unlimited), ensuring equivalent environmental and regulatory qualification.

Electrical Performance: The substitute component provides enhanced electrical characteristics within the same voltage class (45 V). The increased current rating (200 A versus 150 A) and extended junction temperature range (-55°C ~ 175°C versus -55°C ~ 150°C) provide operational margin. Forward voltage performance improves at the higher current rating (720 mV @ 200 A versus 790 mV @ 150 A).

Mechanical Compatibility: Identical mounting type (Chassis Mount) and package designation (ADD-A-PAK (3)) ensure direct mechanical interchangeability without design modification.

Frequently Asked Questions (FAQ)

Q: Can the VS-VSKCS401/045 be used as a direct replacement for the VS-VSKCS301/045?

A: Yes. The VS-VSKCS401/045 is electrically and mechanically compatible with the VS-VSKCS301/045. Both components share identical diode configuration, technology, reverse voltage rating, mounting type, and package. The substitute meets or exceeds all performance parameters of the original part.

Q: What are the key differences between these two Schottky diode modules?

A: The primary differences are current rating (200 A versus 150 A), forward voltage (720 mV @ 200 A versus 790 mV @ 150 A), reverse leakage current (20 mA @ 45 V versus 10 mA @ 45 V), and maximum junction temperature (-55°C ~ 175°C versus -55°C ~ 150°C). The substitute provides higher current capacity and extended temperature range.

Q: Are there any package or mounting considerations when substituting these parts?

A: No. Both components use identical ADD-A-PAK (3) packaging and chassis mount configuration. No PCB layout modifications or mechanical redesign is required.

Q: What is the product status difference, and why does it matter?

A: The VS-VSKCS301/045 is obsolete and no longer manufactured. The VS-VSKCS401/045 is active with current production and supply availability. For new designs or component replenishment, the active substitute ensures long-term supply chain continuity.

Q: Are both components RoHS compliant?

A: Yes. Both the VS-VSKCS301/045 and VS-VSKCS401/045 are ROHS3 compliant with identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: Does the higher reverse leakage current of the substitute affect circuit performance?

A: The reverse leakage current of the VS-VSKCS401/045 is 20 mA @ 45 V compared to 10 mA @ 45 V for the original part. This parameter variation is within acceptable engineering tolerance for Schottky diode modules in this class and does not preclude substitution.

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