PDM2-S24-S9-D Equivalent & Substitute Parts Reference

Part Overview

The CUI Inc. PDM2-S24-S9-D is an isolated DC-DC converter module delivering a single 9V output at up to 222mA from a 21.6V to 26.4V input in a 2W isolated module package. The product is rated for ITE (Commercial) applications and is compliance-certified to multiple international safety standards. The part has been marked as obsolete, creating a need to identify direct replacement or alternative parts that match all critical electrical, mechanical, and regulatory compliance characteristics.

Key Parameters

Parameter	PDM2-S24-S9-D
Manufacturer	CUI Inc.
Series	PDM2-D (2W)
Product Status	Obsolete
Type	Isolated Module
Number of Outputs	1
Voltage - Input (Min)	21.6V
Voltage - Input (Max)	26.4V
Voltage - Output 1	9V
Current - Output (Max)	222mA
Power (Watts)	2 W
Voltage - Isolation	1.5 kV
Applications	ITE (Commercial)
Features	SCP
Operating Temperature	-40°C ~ 105°C (With Derating)
Efficiency	84%
Mounting Type	Through Hole
Package / Case	14-DIP Module, 5 Leads
Size / Dimension	0.80" L x 0.40" W x 0.32" H (20.3mm x 10.2mm x 8.2mm)
Approval Agency	CB Scheme, EN, IEC, UL
Standard Number	55024; 55032 Class A; 60950-1
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	Not Applicable
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8504.40.9580

Substitute Part Grouping Explanation

Alternative and substitute parts are grouped strictly according to identical input and output voltages, power rating, output current, isolation voltage, application, and certified compliance. The grouping only includes isolated DC-DC modules with a single 9V output at up to 222mA from a 21.6V to 26.4V input, 1.5kV isolation, and matching power characteristics. Mechanical format, mounting style, and agency certifications are used as additional grouping variables, restricted by available provided data.

Key parameters for substitution include:

Voltage - Input (Min)
Voltage - Input (Max)
Voltage - Output 1
Current - Output (Max)
Power (Watts)
Voltage - Isolation
Number of Outputs
Type
Applications
Mounting Type
Operating Temperature
Package / Case
Size / Dimension
Efficiency (as provided)
Approval Agency and Compliance
RoHS and REACH Status

Parameter Comparison

Parameter	PDM2-S24-S9-D	PDME2-S24-S9-D	PDME2-S24-S9-S
Manufacturer	CUI Inc.	CUI Inc.	CUI Inc.
Product Status	Obsolete	Active	Active
Type	Isolated Module	Isolated Module	Isolated Module
Number of Outputs	1	1	1
Voltage - Input (Min)	21.6V	21.6V	21.6V
Voltage - Input (Max)	26.4V	26.4V	26.4V
Voltage - Output 1	9V	9V	9V
Current - Output (Max)	222mA	222mA	222mA
Power (Watts)	2 W	1.998 W	1.998 W
Voltage - Isolation	1.5 kV	1.5 kV	1.5 kV
Applications	ITE (Commercial)	ITE (Commercial)	ITE (Commercial)
Operating Temperature	-40°C ~ 105°C (With Derating)	-40°C ~ 105°C (With Derating)	-40°C ~ 105°C (With Derating)
Efficiency	84%	81%	81%
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	14-DIP Module, 5 Leads	7-SIP Module, 4 Leads	6-SIP Module, 4 Leads
Size / Dimension	0.80" L x 0.40" W x 0.32" H (20.3mm x 10.2mm x 8.2mm)	0.77" L x 0.28" W x 0.40" H (19.7mm x 7.1mm x 10.2mm)	0.77" L x 0.28" W x 0.40" H (19.7mm x 7.1mm x 10.2mm)
Approval Agency	CB Scheme, EN, IEC, UL	cURus	CE, cURus
Standard Number	55024; 55032 Class A; 60950-1	62368-1	62368-1
RoHS Status	ROHS3 Compliant	-	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	Not Applicable	-	1 (Unlimited)
REACH Status	REACH Unaffected	-	REACH Unaffected
ECCN	EAR99	-	EAR99
HTSUS	8504.40.9580	-	8504.40.9580

Engineering Selection Recommendations

Select substitute DC-DC converter modules that maintain identical input/output voltage, output current, and isolation ratings compared to PDM2-S24-S9-D. For regulatory and compliance-driven projects, refer to certification and approval agencies listed. PDME2-S24-S9-D and PDME2-S24-S9-S are listed as active, RoHS3 compliant (where provided), and meet REACH, ECCN, and HTSUS declarations. Observe package differences (DIP, SIP, leads) for mechanical compatibility in applications where form factor is restricted.

Frequently Asked Questions (FAQ)

Q1: What is the main criterion for substituting the PDM2-S24-S9-D DC-DC converter?
A1: Substitute parts are selected based on exact matching of input and output voltages, output current, isolation voltage, mounting type, power rating, and relevant certifications.

Q2: Are the mechanical sizes and packages identical?
A2: PDM2-S24-S9-D uses a 14-DIP module with 5 leads, while substitute parts use SIP modules with 4 leads. Size and footprint differences must be considered for PCB or enclosure compatibility.

Q3: Are regulatory and compliance requirements matched in the substitutes?
A3: Substitute parts provide matching or updated compliance to IEC/UL/cURus/CE standards and maintain RoHS3 and REACH status (where specified).

Q4: Are efficiency ratings identical?
A4: The PDM2-S24-S9-D has an efficiency of 84%, while substitutes are specified at 81%. This difference is noted in the comparison table.

Q5: Is the output adjustable in substitute parts?
A5: PDME2-S24-S9-S specifies an adjustable output feature; other electrical characteristics match the original part.

Q6: How many output channels do the substitutes provide?
A6: All listed alternatives provide a single 9V output at 222mA maximum.

Q7: Are there inventory considerations for available substitutes?
A7: Substitutes such as PDME2-S24-S9-D and PDME2-S24-S9-S are active and report inventory in stock.

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