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Equivalent & Substitute Parts for PBO-5-S3.3 AC/DC Converter
Part Overview
The PBO-5-S3.3 from CUI Inc. is an open-frame AC/DC converter that delivers 3.3V at up to 1A with a power output of 3.3W. It is suitable for ITE (Commercial) applications and features universal input capability, supporting 85–264 VAC or 100–400 VDC inputs. The product is classified as obsolete; therefore, identifying suitable alternative models is required to ensure continuity in designs that specify this part.
Substiute Parts
Key Parameters
| Parameter | PBO-5-S3.3 |
|---|---|
| Manufacturer | CUI Inc. |
| Category | AC/DC Converter |
| Type | Open Frame |
| Voltage - Input | 85 ~ 264 VAC, 100 ~ 400 VDC |
| Voltage - Output 1 | 3.3V |
| Number of Outputs | 1 |
| Current - Output (Max) | 1A |
| Power (Watts) | 3.3 W |
| Operating Temperature | -25°C ~ 85°C (With Derating) |
| Mounting Type | Through Hole |
| Package / Case | 14-SIP Module, 6 Leads |
| Size / Dimension | 1.57" x 0.50" x 0.79" (40.0mm x 12.8mm x 20.0mm) |
| Efficiency | 67% |
| Line Regulation | ±0.5% |
| Load Regulation | ±1.5% |
| Applications | ITE (Commercial) |
| Compliance | CB Scheme, EN, IEC, UL; RoHS |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution is determined by key electrical and mechanical parameters: input voltage range, output voltage, maximum output current, output power, mounting type, and application suitability. Additional relevant fields are package type, size, operating temperature range, regulatory approvals, efficiency, and RoHS status. Only substitutes matching or exceeding these specified parameters are listed. These criteria ensure function, safety, and compliance with the intended use.
Parameter Comparison
| Parameter | PBO-5-S3.3 (Main) | PSK-5D-3 (Substitute) |
|---|---|---|
| Manufacturer | CUI Inc. | CUI Inc. |
| Category | AC/DC Converter | AC/DC Converter |
| Type | Open Frame | Enclosed |
| Series | PBO-5 (5W) | PSK-5D (5W) |
| Voltage - Input | 85 ~ 264 VAC, 100 ~ 400 VDC | 85 ~ 305 VAC, 100 ~ 430 VDC |
| Voltage - Output 1 | 3.3V | 3.3V |
| Number of Outputs | 1 | 1 |
| Current - Output (Max) | 1A | 1.515A |
| Power (Watts) | 3.3 W | 5 W |
| Operating Temperature | -25°C ~ 85°C (With Derating) | -40°C ~ 85°C (With Derating) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 14-SIP Module, 6 Leads | 5-DIP Module, 4 Leads |
| Size / Dimension | 1.57" x 0.50" x 0.79" (40.0mm x 12.8mm x 20.0mm) | 1.00" x 1.00" x 0.69" (25.4mm x 25.4mm x 17.6mm) |
| Efficiency | 67% | 71.5% |
| Line Regulation | ±0.5% | ±0.5% |
| Load Regulation | ±1.5% | ±1% |
| Applications | ITE (Commercial) | Household Appliances, ITE (Commercial) |
| Compliance | CB Scheme, EN, IEC, UL; RoHS | CE, cURus; ROHS3 |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The main part, PBO-5-S3.3, is obsolete, while the listed substitute, PSK-5D-3, is active and RoHS compliant. Both parts offer the same output voltage and comparable or improved electrical performance, including a higher current limit and broader operating conditions. Both allow through-hole mounting. Substitute parts maintain compliance with international safety and electromagnetic standards, with certifications represented in the parameter tables.
Frequently Asked Questions (FAQ)
Q1: What substitution criteria are used for the PBO-5-S3.3 in this product category?
A1: Substitution is based strictly on matching or exceeding the provided electrical specifications (input voltage range, output voltage, output current, output power), mounting type, and required regulatory compliance.
Q2: Are the pinouts or package dimensions exactly the same between PBO-5-S3.3 and PSK-5D-3?
A2: As shown in the parameter comparison, the package/case and size/dimensions differ; users must verify mechanical compatibility based solely on the provided dimensions and mounting style.
Q3: Is PSK-5D-3 compatible for designs requiring ITE (Commercial) applications?
A3: PSK-5D-3 specifies suitability for ITE (Commercial) applications, meeting the substitution criteria established for this use case.
Q4: What are the RoHS and regulatory compliance statuses of the substitute part?
A4: PSK-5D-3 is ROHS3 compliant and certified with CE, cURus; approval and standard numbers are provided in the parameter tables above.
Q5: How does the replacement part's performance compare in terms of efficiency and regulation?
A5: PSK-5D-3 offers higher efficiency and improved or equal line/load regulation according to the provided specifications.
Q6: Does the substitute part operate within the same temperature range?
A6: PSK-5D-3 operates over a broader temperature range under derating conditions, matching or exceeding the main part's capability as specified.
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