Equivalent & Substitute Parts Reference for CUI Inc. PBO-3-S9

Part Overview

PBO-3-S9 is an AC/DC Converter from CUI Inc. designed for open frame, through-hole applications requiring a single 9V output at up to 333mA with a power rating of 3W. The product remains active in inventory but situations such as supply constraints, package variations, or application-specific requirements may necessitate the identification of substitute models with equivalent electrical and mechanical parameters.

Substiute Parts

PBO-3-S9

CUI Inc.In Stock: 826PBO-3-S9 Datasheet

Current PartRFQ

PBO-3C-9

CUI Inc.In Stock: 966PBO-3C-9 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Direct substitution is determined strictly by evaluating compatibility across provided parameters, including output voltage and current, input range, power rating, mounting type, package details, compliance standards, environmental ratings, and approval agency certifications. Substitute parts are grouped based on matching these criteria to secure interchangeable, functional equivalents under the documented operating conditions.

Key substitution parameters:

• Output Voltage: 9V
• Output Current: 333mA (max)
• Power: 3W
• Input Voltage Range: 85 ~ 305 VAC, 70 ~ 430 VDC
• Mounting: Through Hole
• Package Type / Case
• Compliance: RoHS status, approval agencies, and standard numbers
• Operating Temperature Range

Parameter Comparison

Engineering Selection Recommendations

Both the PBO-3-S9 and PBO-3C-9 are active products with RoHS compliance and have comparable electrical output parameters (9V, 333mA, 3W) and input voltage ranges. Evaluation of substitute suitability is based strictly on status, compliance, approval agencies, and adherence to documented certifications and standard numbers. The substitute PBO-3C-9 expands regulatory agency coverage and includes additional application approvals, remaining within all specified technical and environmental boundaries.

Frequently Asked Questions (FAQ)

Q: What criteria are used for selecting a substitute for the PBO-3-S9 AC/DC converter?
A: Substitution is based strictly on matching input voltage range, output voltage and current, power rating, mounting type, package details, operating temperature, compliance status, and certification agency approvals.

Q: Is the package for the substitute part PBO-3C-9 compatible with existing layouts?
A: PBO-3C-9 uses a 6-SIP module package. Verify that dimensions (1.04" L x 0.43" W x 0.49" H) and lead arrangements correspond with the original design requirements for mechanical compatibility.

Q: Are compliance certificates and standards equivalent between PBO-3-S9 and PBO-3C-9?
A: Certification agencies and standards differ. PBO-3-S9 features CB Scheme, EN, IEC, and UL with standards 55024; 60950-1, etc. PBO-3C-9 provides CE and cURus with 60335-1; 62368-1. Part selection must be based on required agency and standard conformity.

Q: Do efficiency levels differ between these parts?
A: PBO-3-S9 is rated for 75% efficiency; PBO-3C-9 for 76%. Both fall within typical range for 9V 3W open frame AC/DC converters.

Q: Are both listed parts suitable for ITE (Commercial) applications?
A: Both part numbers list ITE (Commercial) among their supported applications, with PBO-3C-9 also listing household appliances. Compatibility is governed by declared application support.