Equivalent & Substitute Parts Reference for VOFM-5-9

Part Overview

The VOFM-5-9, manufactured by CUI Inc., is an open frame AC/DC converter delivering a single 9V output at 550mA (5W maximum). It supports universal input voltage (85–264 VAC) and is designed for medical applications with agency approvals such as CE, cUL, TUV, and UL. The product is classified as obsolete, necessitating identification of equivalent or substitute models to maintain system functionality, ensure compliance, and support ongoing production where this unit was originally specified.

Substiute Parts

VOFM-5-9

CUI Inc.In Stock: 1233VOFM-5-9 Datasheet

Current PartRFQ

VMS-20-9

CUI Inc.In Stock: 1142VMS-20-9 Datasheet

SimilarRFQ

EML30US09-P

XP PowerIn Stock: 678EML30US09-P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is strictly determined by matching the following parameters: input voltage range, output voltage, output current capability (meeting or exceeding original), power rating, mounting type, output count, application suitability, approval agency certifications, package/case style, RoHS status, and moisture sensitivity level (MSL). All listed substitutes conform to these criteria, providing equivalent or enhanced electrical and mechanical compatibility within the medical application context and through-hole mounting constraints.

Parameter Comparison

Engineering Selection Recommendations

Given the VOFM-5-9 is obsolete, only active substitute AC/DC converter models should be considered for ongoing designs and service support. Both VMS-20-9 (CUI Inc.) and EML30US09-P (XP Power) are listed as active, RoHS-compliant, and offer agency certifications appropriate for medical applications. Both models feature the same essential form factor and through-hole mounting. Each substitute meets or exceeds the input voltage, output voltage, and current specifications, as well as MSL requirements.

Frequently Asked Questions (FAQ)

Q1: What electrical parameters must match for substitution?
A1: Key parameters include input voltage range, output voltage, output current, number of outputs, and power rating. Substitute parts must equal or exceed these values.

Q2: Are substitutes compatible with medical applications?
A2: All considered substitutes specify medical applications and hold relevant agency approvals.

Q3: Is the package/case identical across all substitutes?
A3: All listed substitutes use the 4-DIP Module package suitable for through-hole mounting, though physical dimensions may vary slightly.

Q4: Do substitutes support universal input voltage?
A4: Each substitute supports a universal input AC voltage range compatible with the original specification.

Q5: Are environmental and compliance certifications maintained?
A5: All substitutes are RoHS compliant and have agency certifications (TUV, UL, CB, etc.) suitable for regulated environments.

Q6: Does output current exceeding the original part cause issues?
A6: Substitutes with higher output current ratings are compatible, provided system load remains within specified voltage limits. They do not introduce incompatibility in this context based on listed parameters.