PSK-S25D-3 Equivalent & Substitute Parts Reference

Part Overview

The CUI Inc. PSK-S25D-3 is an enclosed AC/DC converter rated for 3.3V output at 4.1A with a 14W maximum power output. It features a universal input range of 85~264 VAC or 100~370 VDC, a single adjustable output, and is RoHS compliant. This product is classified as obsolete. Identification of alternative models is necessary to ensure continuity of design and support for applications requiring matching electrical and mechanical characteristics.

Key Parameters

Parameter	PSK-S25D-3 Value
Voltage - Input	85 ~ 264 VAC, 100 ~ 370 VDC
Voltage - Output 1	3.3V
Current - Output (Max)	4.1A
Power (Watts)	14 W
Number of Outputs	1
Operating Temperature	-40°C ~ 85°C (With Derating)
Mounting Type	Through Hole
Package / Case	9-DIP Module, 6 Leads
Size / Dimension	2.76" L x 1.89" W x 0.93" H (70.0mm x 48.0mm x 23.5mm)
Line Regulation	±0.5%
Load Regulation	±1%
Product Status	Obsolete
Series	PSK-S25D (25W)
RoHS Status	RoHS Compliant
Standard Number	62368-1

Substitute Part Grouping Explanation

Only alternative models matching the following parameters are eligible as substitutes for the PSK-S25D-3 AC/DC converter: input voltage range, output voltage, maximum output current, output power, number of outputs, operating temperature range, mounting type, and RoHS compliance. Certifications and dimensions are accounted for based strictly on the input data.

Parameter Comparison

Parameter	PSK-S25D-3	PSK-30D-3
Manufacturer	CUI Inc.	CUI Inc.
Voltage - Input	85 ~ 264 VAC, 100 ~ 370 VDC	85 ~ 305 VAC, 100 ~ 430 VDC
Voltage - Output 1	3.3V	3.3V
Current - Output (Max)	4.1A	6A
Power (Watts)	14 W	20 W
Number of Outputs	1	1
Operating Temperature	-40°C ~ 85°C (With Derating)	-40°C ~ 85°C (With Derating)
Mounting Type	Through Hole	Through Hole
Package / Case	9-DIP Module, 6 Leads	4-DIP Module
Size / Dimension	2.76" x 1.89" x 0.93"	2.74" x 1.54" x 0.94"
Line Regulation	±0.5%	±0.5%
Load Regulation	±1%	±2%
Product Status	Obsolete	Active
Series	PSK-S25D (25W)	PSK-30D
RoHS Status	RoHS Compliant	ROHS3 Compliant
Standard Number	62368-1	60335-1; 62368-1

Engineering Selection Recommendations

Based on the provided product status, only models with an active product status and appropriate RoHS compliance and relevant certifications are suitable alternatives. PSK-30D-3 from CUI Inc. is an eligible and active substitute, meeting electrical input, output, and regulatory requirements for direct replacement in the AC/DC converter category.

Frequently Asked Questions (FAQ)

Q1: What determines if a part is a suitable substitute for the PSK-S25D-3?
A1: Allowed substitute parts must match or exceed the input voltage range, output voltage, output current, power rating, number of outputs, operating temperature range, mounting type, and must share required compliance and certifications.

Q2: Do package differences affect compatibility?
A2: The package/case and size/dimension can affect mechanical compatibility and board layout. Comparison must be based only on dimensions and mounting type as specified.

Q3: Are there changes in regulatory certifications between the original and substitute parts?
A3: Substitute parts must maintain equivalent or additional standard numbers and RoHS compliance per the input parameters.

Q4: Is the output adjustment or feature set matched in substitutes?
A4: Only features and outputs listed in the input are considered. Substitute models must offer at least the required outputs.

Q5: How does the product status affect substitution?
A5: Obsolete products require substitution with active models to ensure ongoing availability and support. Only parts with confirmed active status are considered substitutes.

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