WD201 Equivalent & Substitute Parts Reference Page

Part Overview

The XP Power WD201 is an isolated module DC-DC converter designed for commercial ITE applications, providing a single 5V output at up to 3A from an 18V–36V input. With a power rating of 15W and through-hole mounting in a 5-DIP module package, WD201 enables efficient power conversion with an isolation voltage of 500V and essential features such as short circuit protection (SCP). As the WD201 is marked "Obsolete," identifying substitute models is necessary for ongoing design support or direct replacement in existing assemblies.

Key Parameters

Parameter	WD201
Manufacturer Part Number	WD201
Series	WD (15W)
Type	Isolated Module
Number of Outputs	1
Voltage - Input (Min)	18V
Voltage - Input (Max)	36V
Voltage - Output 1	5V
Current - Output (Max)	3A
Power (Watts)	15W
Voltage - Isolation	500V
Applications	ITE (Commercial)
Features	SCP
Operating Temperature	-25°C ~ 71°C
Efficiency	78%
Mounting Type	Through Hole
Package / Case	5-DIP Module
Size / Dimension	2.00" L x 1.00" W x 0.40" H
RoHS Status	ROHS3 Compliant
ECCN	EAR99
HTSUS	8504.40.9580

Substitute Part Grouping Explanation

The substitute grouping for WD201 is strictly based on matching critical electrical and mechanical parameters. These parameters include input voltage range, output voltage and current rating, total power, isolation voltage, mounting type, package dimensions, compliance status, and application suitability. Only parts that fully meet the listed specifications are considered.

Parameter Comparison

Parameter	WD201 (XP Power)	SKA15B-05 (MEAN WELL USA Inc.)
Type	Isolated Module	Isolated Module
Number of Outputs	1	1
Voltage - Input (Min)	18V	18V
Voltage - Input (Max)	36V	36V
Voltage - Output 1	5V	5V
Current - Output (Max)	3A	3A
Power (Watts)	15W	15W
Voltage - Isolation	500V	1 kV
Applications	ITE (Commercial)	ITE (Commercial)
Features	SCP	OVP, SCP
Operating Temperature	-25°C ~ 71°C	-40°C ~ 71°C (With Derating)
Efficiency	78%	78%
Mounting Type	Through Hole	Through Hole
Package / Case	5-DIP Module	5-DIP Module
Size / Dimension	2.00" L x 1.00" W x 0.40" H	2.00" L x 1.00" W x 0.44" H
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
ECCN	EAR99	EAR99
HTSUS	8504.40.9580	8504.40.9580

Engineering Selection Recommendations

Selection of SKA15B-05 as a substitute for WD201 is based on the product status ("Active" vs. "Obsolete"), direct compliance with ROHS3, identical essential electrical ratings, and matching mechanical attributes including package type and mounting style. All provided certifications and classifications align.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting WD201 with SKA15B-05?
A1: Substitution is based on matching input/output voltage range, output current, power rating, isolation, mounting type, package dimensions, application category, compliance status, and certification codes.

Q2: Is SKA15B-05 physically compatible with installations designed for WD201?
A2: Both models use a 5-DIP module through-hole package with closely matching dimensions, supporting compatibility for standard PCB layouts specified in the provided parameters.

Q3: Does SKA15B-05 fulfill the same compliance and environmental criteria?
A3: SKA15B-05 is marked as ROHS3 compliant, with ECCN and HTSUS codes matching those of WD201.

Q4: What is the status difference between these two parts?
A4: WD201 is listed as "Obsolete" and SKA15B-05 is "Active," providing ongoing availability.

Q5: Are there any differences in feature support?
A5: Both support short circuit protection (SCP). SKA15B-05 also features over-voltage protection (OVP) as indicated.

Q6: Do temperature ratings differ?
A6: WD201 operates from -25°C ~ 71°C, while SKA15B-05 covers -40°C ~ 71°C with derating options as listed.

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