V7803-500 Equivalent & Substitute Parts Reference

Part Overview

The V7803-500 from CUI Inc. is a linear regulator replacement DC-DC converter designed for ITE (Commercial) applications, delivering a single 3.3V output at up to 500mA with a maximum power rating of 1.65W. The part operates from 4.75V to 28V input, offers OTP and SCP features, and is realized in a compact 3-SIP through-hole package. The product status is listed as Obsolete, making it necessary to identify equivalent or substitute models with matching or superior electrical and mechanical parameters to ensure continued design and inventory continuity.

Substiute Parts

V7803-500

CUI Inc.In Stock: 12508V7803-500 Datasheet

Current PartRFQ

VX7803-500

CUI Inc.In Stock: 2987VX7803-500 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes for the CUI Inc. V7803-500 DC-DC converter are selected strictly by matching the following key parameters: output voltage (3.3V), output current (500mA), power rating (1.65W), input voltage range (minimum 4.75V, maximum at least 28V), package type (3-SIP Module, Through Hole), application (ITE Commercial), and compliance status (RoHS, REACH, ECCN, and HTSUS). Only parts meeting or exceeding these ratings and compliance requirements are grouped as equivalents.

Parameter Comparison

Engineering Selection Recommendations

The VX7803-500 is an active product that matches the electrical and mechanical requirements of the V7803-500, with additional certifications and a broader input voltage range. Both devices are ROHS3 compliant, REACH unaffected, and have the same ECCN and HTSUS categorization. Based on product status and compliance, the VX7803-500 is a valid substitute where an active device is required.

Frequently Asked Questions (FAQ)

Q1: How are equivalent and substitute DC-DC converters selected?
A1: Substitutes are selected by matching key parameters including output voltage, output current, input voltage range, power rating, package type, and compliance.

Q2: Is package compatibility identical between V7803-500 and VX7803-500?
A2: Both parts use the 3-SIP Module through-hole package with minimal dimensional variations.

Q3: Are there differences in compliance or certifications?
A3: Both parts are ROHS3 compliant and REACH unaffected. The VX7803-500 also indicates certification to relevant standards as provided.

Q4: Is the efficiency or thermal performance affected by substituting VX7803-500?
A4: Only the efficiency values explicitly provided should be considered; VX7803-500 specifies 86% efficiency versus 90% for V7803-500.

Q5: What is the significance of product status in selecting a substitute?
A5: V7803-500 is obsolete. VX7803-500 is active, making it suitable for ongoing designs and production where availability is required.