PSK-S20C-12 Equivalent & Substitute Parts Reference

Part Overview

The CUI Inc. PSK-S20C-12 is an enclosed AC/DC converter with a single 12V output at up to 1.66A and a power rating of 20W, intended for ITE (commercial) applications. It supports a universal input voltage range and through-hole mounting. The product is classified as obsolete, necessitating direct alternatives to maintain designs dependent on these specifications. Substitution is required to ensure continued availability and compliance with operational and regulatory requirements.

Key Parameters

Parameter	Value
Voltage - Input	85 ~ 264 VAC, 100 ~ 370 VDC
Voltage - Output 1	12V
Current - Output (Max)	1.66A
Power (Watts)	20 W
Number of Outputs	1
Mounting Type	Through Hole
Package / Case	4-DIP Module
Operating Temperature	-40°C ~ 70°C (With Derating)
Efficiency	82%
Approval Agency	CB Scheme, EN, IEC, UL
RoHS Status	RoHS Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute AC/DC converters are identified by matching the following allowed parameters: input voltage range, output voltage, output current rating, power rating, mounting type, package style, operating temperature range, efficiency, approval/certification standards, and RoHS/REACH compliance. Only parts with equal or broader performance in these categories are considered substitutes.

Parameter Comparison

Parameter	PSK-S20C-12 (Main Part)	PSK-20D-12 (CUI Inc.)	RAC20-12SK (Recom Power)
Voltage - Input	85 ~ 264 VAC, 100 ~ 370 VDC	85 ~ 305 VAC, 100 ~ 430 VDC	85 ~ 264 VAC, 120 ~ 370 VDC
Voltage - Output 1	12V	12V	12V
Current - Output (Max)	1.66A	1.67A	1.67A
Power (Watts)	20 W	20 W	20 W
Number of Outputs	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-DIP Module	6-DIP Module, 4 Leads	5-DIP Module, 4 Leads
Operating Temperature	-40°C ~ 70°C (With Derating)	-40°C ~ 85°C (With Derating)	-40°C ~ 85°C (With Derating)
Efficiency	82%	86%	86%
Approval Agency	CB Scheme, EN, IEC, UL	CE, cURus	CB, CE, cURus
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Selection is based on the obsolete status of the CUI Inc. PSK-S20C-12 and the continued active status of PSK-20D-12 (CUI Inc.) and RAC20-12SK (Recom Power). Substitute parts provide RoHS and REACH compliance, and necessary certification agency alignment as listed. Only models matching or exceeding the original part’s regulatory, mounting, and electrical parameters are referenced.

Frequently Asked Questions (FAQ)

Q1: What are the most critical parameters when selecting a substitute for PSK-S20C-12?
A1: Key parameters include input voltage range, output voltage and current, power rating, mounting type, package style, operating temperature range, compliance certifications, RoHS, and REACH status.

Q2: Do package or mounting differences exist among these substitutes?
A2: Differences exist in package format: PSK-S20C-12 uses a 4-DIP module, while substitutes use 6-DIP or 5-DIP module formats with 4 leads. All parts support through-hole mounting.

Q3: Are the substitute parts compliant with RoHS and REACH?
A3: All listed substitutes are RoHS and REACH compliant as specified.

Q4: How do approval agencies affect substitute selection?
A4: Substitute parts are listed with relevant approval agencies (such as CE, CB, cURus) per the provided data. Selection is based solely on these documented certifications.

Q5: Are there differences in electrical performance parameters?
A5: Electrical performance such as output voltage, output current, and power rating are matched or higher in the listed substitutes. Differences in maximum efficiency and operating temperature range are highlighted in the comparison table.

Q6: Why substitute the PSK-S20C-12?
A6: The PSK-S20C-12 is obsolete, which necessitates substitutes to ensure continued design support and availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message