Equivalent & Substitute Parts Reference: PSK-S20C-15

Part Overview

The PSK-S20C-15 from CUI Inc. is an enclosed AC/DC converter, offering a single 15V output at 1.33A, suitable for ITE (Commercial) applications. With a maximum output power of 20W, universal input voltage range, and through-hole mounting in a 4-DIP module case, it is certified to several safety and EMC standards. The product is currently marked as Obsolete, which necessitates identifying substitute models with equivalent electrical and mechanical specifications for ongoing designs, replacements, or inventory fulfillment.

Key Parameters

Manufacturer Part Number	Manufacturer	Description	Series	Product Status	Type	Number of Outputs	Voltage - Input	Voltage - Output 1	Current - Output (Max)	Power (Watts)	Applications	Operating Temperature	Efficiency	Mounting Type	Package / Case	Size / Dimension	Approval Agency	Standard Number	Line Regulation	Load Regulation	RoHS Status	REACH Status	ECCN	HTSUS
PSK-S20C-15	CUI Inc.	AC/DC CONVERTER 15V 20W	PSK-S20C (20W)	Obsolete	Enclosed	1	85 ~ 264 VAC, 100 ~ 370 VDC	15V	1.33A	20 W	ITE (Commercial)	-40°C ~ 70°C (With Derating)	83%	Through Hole	4-DIP Module	2.12" L x 1.13" W x 0.93" H	CB Scheme, EN, IEC, UL	55024; 55032 Class A; 60950-1; 61000-3-2; 62368-1	±0.5%	±1%	RoHS Compliant	REACH Unaffected	EAR99	8504.40.9510

Substitute Part Grouping Explanation

Substitution is based strictly on matching electrical output (15V, 1.33A), input voltage range, output power (20W), mounting type (through hole), package/case type, and compliance standards. Substitute parts included meet these criteria and are valid alternatives regarding mechanical and electrical compatibility, application class, and international safety or EMC certifications. The comparison only considers parameters explicitly available for PSK-S20C-15 and its substitutes.

Key parameters governing substitution:

Output voltage, current, and power
Input voltage range
Mounting type and package/case
Efficiency and operating temperature
Regulatory approvals and compliance status

Parameter Comparison

Manufacturer Part Number	Manufacturer	Description	Series	Product Status	Type	Number of Outputs	Voltage - Input	Voltage - Output 1	Current - Output (Max)	Power (Watts)	Applications	Operating Temperature	Efficiency	Mounting Type	Package / Case	Size / Dimension	Approval Agency	Line Regulation	Load Regulation	RoHS Status	REACH Status	ECCN	HTSUS
PSK-S20C-15	CUI Inc.	AC/DC CONVERTER 15V 20W	PSK-S20C (20W)	Obsolete	Enclosed	1	85 ~ 264 VAC, 100 ~ 370 VDC	15V	1.33A	20 W	ITE (Commercial)	-40°C ~ 70°C (With Derating)	83%	Through Hole	4-DIP Module	2.12" L x 1.13" W x 0.93" H	CB Scheme, EN, IEC, UL	±0.5%	±1%	RoHS Compliant	REACH Unaffected	EAR99	8504.40.9510
PSK-20D-15	CUI Inc.	AC/DC CONVERTER 15V 20W	PSK-20D (20W)	Active	Enclosed	1	85 ~ 305 VAC, 100 ~ 430 VDC	15V	1.33A	20 W	Household Appliances, ITE (Commercial), Medical	-40°C ~ 85°C (With Derating)	87%	Through Hole	6-DIP Module, 4 Leads	2.06" L x 1.07" W x 0.94" H	CE, cURus	±0.5%	±1%	ROHS3 Compliant	REACH Unaffected	EAR99	8504.40.9510
RAC20-15SK	Recom Power	AC/DC CONVERTER 15V 20W	POWERLINE RAC20-K (20W)	Active	Enclosed	1	85 ~ 264 VAC, 120 ~ 370 VDC	15V	1.333A	20 W	Household Appliances, ITE (Commercial)	-40°C ~ 85°C (With Derating)	86%	Through Hole	5-DIP Module, 4 Leads	2.07" L x 1.08" W x 0.91" H	CB, CE, cURus	±0.5%	±2%	ROHS3 Compliant	REACH Unaffected	EAR99	8504.40.9510

Engineering Selection Recommendations

The PSK-S20C-15 is designated as obsolete, while both PSK-20D-15 and RAC20-15SK remain active with comparable electrical ratings and compliance certifications. All substitute parts hold relevant approvals and environmental compliance status. Selection should be based on documented certifications, RoHS and REACH status, application class, and physical form factor. Compatibility of mounting type and regulatory certifications should be directly matched to project, industry, and jurisdictional requirements.

Frequently Asked Questions (FAQ)

Q: What criteria are required for a substitute to PSK-S20C-15?
A: Substitute parts must match output voltage (15V), output current (≥1.33A), total output power (20W), input voltage range, mounting style (through hole), and package/case type. Compliance with similar safety and EMC standards is also required.

Q: Are the substitute parts compatible in terms of physical dimensions?
A: Substitute models PSK-20D-15 and RAC20-15SK have comparable dimensions and through-hole mounting. The specific DIP module configuration should be confirmed according to board layout requirements.

Q: Do the substitutes offer similar certifications and regulatory status?
A: Both PSK-20D-15 and RAC20-15SK provide international safety and EMC approvals, consistent RoHS and REACH environmental status, and are assigned the same ECCN and HTSUS codes.

Q: Are there differences in electrical performance or efficiency?
A: PSK-20D-15 and RAC20-15SK demonstrate equal or greater efficiency compared to PSK-S20C-15, with line and load regulation values within the same range.

Q: What should be considered regarding operating temperature ranges?
A: Substitute models PSK-20D-15 and RAC20-15SK support an operating temperature range up to 85°C (with derating), which meets or exceeds the original specification.

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