Equivalent & Substitute Parts for Vicor VI-J4K-CX DC DC Converter

Part Overview

The Vicor VI-J4K-CX is an isolated DC-DC converter module from the VI-J00™ (75W) series, designed for ITE (Commercial) applications. It features a single output of 40V, maximum continuous output current of 1.88A, and is capable of operating with a 55V–100V input. The VI-J4K-CX delivers a power output of 75W, provides 3 kV isolation, and includes over-current and short circuit protection functions. The product status is "Obsolete," which necessitates identifying alternative models to ensure ongoing system availability and compatibility for existing designs requiring these electrical and mechanical parameters.

Substiute Parts

VI-J4K-CX

Vicor CorporationIn Stock: 890VI-J4K-CX Datasheet

Current PartRFQ

VI-J4K-CX-F1

Vicor CorporationIn Stock: 1103VI-J4K-CX-F1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Vicor VI-J4K-CX DC-DC converter is determined by matching the following parameters: output voltage (40V), maximum output current (1.88A), input voltage range (55V–100V), output power (75W), type (Isolated Module), number of outputs (1), voltage isolation (3 kV), protection features (OCP, SCP), efficiency (90%), operating temperature range (-25°C ~ 100°C), mounting type (Through Hole), package / case (Half Brick), RoHS status, and compliance designations (MSL, REACH, ECCN, HTSUS). Only parts that meet or match all these criteria are considered as substitutes.

Parameter Comparison

Engineering Selection Recommendations

The Vicor VI-J4K-CX is classified as "Obsolete." The substitute VI-J4K-CX-F1 from the same manufacturer and series remains "Active" and is therefore suitable from an inventory and supply chain continuity perspective. Both parts are RoHS non-compliant, have identical compliance designations (MSL: Not Applicable, REACH: Unaffected, ECCN: EAR99, HTSUS: 8504.40.9580), and are provided in Half Brick packages. The substitute part satisfies all specified compliance and certification requirements.

Frequently Asked Questions (FAQ)

Q1: What is the main requirement for substituting the VI-J4K-CX DC DC Converter?
A1: Substitute parts must meet the same input voltage range (55V–100V), output voltage (40V), output current (1.88A), power rating (75W), isolation (3 kV), number of outputs (1), and key features such as OCP and SCP.

Q2: Does the substitute part VI-J4K-CX-F1 have the same mechanical compatibility?
A2: Both parts are Half Brick modules; however, their physical dimensions differ. Size and compatibility with the existing PCB footprint should be verified based on listed dimensions.

Q3: Are there differences in compliance or certifications between the VI-J4K-CX and VI-J4K-CX-F1?
A3: Both parts are RoHS non-compliant and have identical REACH, ECCN, HTSUS, and MSL designations.

Q4: Is the substitute part suitable for the same commercial application?
A4: Yes, both parts are categorized for ITE (Commercial) applications and provide the same electrical characteristics.

Q5: Why is substitution necessary for the VI-J4K-CX?
A5: The VI-J4K-CX is classified as obsolete, making an active equivalent necessary for ongoing supply and system maintenance.