Equivalent & Substitute Parts for PBO-3-S3.3

Part Overview

The CUI Inc. PBO-3-S3.3 is an Open Frame AC/DC Converter providing 3.3V output at up to 600mA (2W), designed for ITE (Commercial) applications. It supports wide input voltage ranges (85~305 VAC, 70~430 VDC) and complies with common safety standards (CB Scheme, EN, IEC, UL). The product is now listed as Obsolete, necessitating the selection of direct substitutes to ensure ongoing production, maintenance, and design continuity.

Substiute Parts

PBO-3-S3.3

CUI Inc.In Stock: 708PBO-3-S3.3 Datasheet

Current PartRFQ

PBO-3C-3

CUI Inc.In Stock: 997PBO-3C-3 Datasheet

MFR RecommendedRFQ

PSK-3D-3

CUI Inc.In Stock: 951PSK-3D-3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes for the PBO-3-S3.3 are determined strictly by matching key allowable electrical and mechanical parameters: input voltage range, output voltage and current, total output power, topology (open frame or enclosed), mounting type, regulatory compliance, and thermal performance. Only substitutes with equivalent or better performance within these provided parameters are included.

Key parameters used for substitution:

• Output voltage: 3.3V
• Output current: ≥600mA
• Input voltage range: 85 ~ 305 VAC, ≥70 VDC minimum
• Mounting type: Through Hole
• Operating temperature: -40°C ~ 85°C (With Derating)
• Regulatory compliance (agency and standard numbers)
• RoHS status

Parameter Comparison

Engineering Selection Recommendations

When selecting substitutes for PBO-3-S3.3, all listed alternatives (PBO-3C-3 and PSK-3D-3) are in active production and meet regulatory compliance (RoHS, CE/cURus or equivalent). Both substitutes provide the same or higher current capability within the specified voltage and thermal range, and support through-hole mounting. Certification and compliance for ITE (Commercial) and Household Appliance use are provided in the substitute models’ approval agencies and standard numbers as listed. Product status is active for both listed alternatives, ensuring continued supply chain availability.

Frequently Asked Questions (FAQ)

Q: What are the critical parameters for substituting PBO-3-S3.3?
A: Key parameters include output voltage (3.3V), output current (≥600mA), input voltage range (85~305 VAC, ≥70 VDC minimum), mounting type (through hole), operating temperature (-40°C ~ 85°C), regulatory agency approvals, and RoHS status.

Q: Are the alternative parts pin- and footprint-compatible?
A: Only package type and mounting method (through hole) are specified. For mechanical and layout compatibility, verify dimensions and package/case type: PBO-3-S3.3 uses 12-SIP Module, PBO-3C-3 uses 6-SIP Module, PSK-3D-3 uses 5-DIP Module.

Q: Can the substitutes be used in ITE (Commercial) and Household Appliance applications?
A: All substitutes specify ITE (Commercial) and/or Household Appliance applications, aligning with the main part’s application scope.

Q: Are the substitutes RoHS compliant?
A: All substitute models are specified as RoHS compliant.

Q: Do efficiency and regulation differ between alternatives?
A: Substitutes may offer higher efficiency and different regulation values. Evaluate the parameter comparison table for precise figures.

Q: Are all listed parts currently in production?
A: Both PBO-3C-3 and PSK-3D-3 are listed as active products; PBO-3-S3.3 is obsolete.

Q: Are there differences in agency approvals among the parts?
A: Approval agencies and standard numbers are listed; select according to the system or regulatory requirements.