Equivalent & Substitute Parts for CUI Inc. PDM2-S5-D15-D

Part Overview

The CUI Inc. PDM2-S5-D15-D is an isolated module DC-DC converter from the PDM2-D (2W) series, offering dual outputs of 15V and -15V at 67mA each from a 4.5V to 5.5V input. The module is rated for a total power output of 2W and electrical isolation of 1.5kV. It is suitable for ITE (Commercial) applications and comes in a 14-DIP module, 6-lead through-hole package. The PDM2-S5-D15-D is currently classified as obsolete. Identifying substitute DC-DC converters is critical to maintain design continuity and supply-chain reliability when the main part is no longer available.

Key Parameters

Parameter	Main Part
Manufacturer Part Number	PDM2-S5-D15-D
Series	PDM2-D (2W)
Type	Isolated Module
Number of Outputs	2
Voltage - Input (Min)	4.5V
Voltage - Input (Max)	5.5V
Voltage - Output 1	15V
Voltage - Output 2	-15V
Current - Output (Max)	67mA, 67mA
Power (Watts)	2 W
Voltage - Isolation	1.5 kV
Applications	ITE (Commercial)
Operating Temperature	-40°C ~ 105°C (With Derating)
Efficiency	84%
Mounting Type	Through Hole
Package / Case	14-DIP Module, 6 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
RoHS Status	RoHS Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution is based strictly on the following electrical and mechanical parameters: input voltage range, output voltages, output currents, power rating, isolation voltage, number of outputs, type, mounting configuration, package/case, approval/certification status, operating temperature, and application suitability. Substitute parts must exactly match these critical parameters. Only parts listed with explicit equivalence per provided data are included.

Key substitution parameters:

Voltage - Input (Min/Max)
Voltage - Output 1/2
Current - Output (Max)
Power (Watts)
Voltage - Isolation
Number of Outputs
Type
Mounting Type
Package / Case
Operating Temperature
Approval Agency / Standard Number
RoHS and regulatory status

Parameter Comparison

Parameter	PDM2-S5-D15-D	PDME2-S5-D15-D	PDME2-S5-D15-S
Manufacturer	CUI Inc.	CUI Inc.	CUI Inc.
Type	Isolated Module	Isolated Module	Isolated Module
Number of Outputs	2	2	2
Voltage - Input (Min)	4.5V	4.5V	4.5V
Voltage - Input (Max)	5.5V	5.5V	5.5V
Voltage - Output 1	15V	15V	15V
Voltage - Output 2	-15V	-15V	-15V
Current - Output (Max)	67mA, 67mA	67mA, 67mA	67mA, 67mA
Power (Watts)	2 W	2 W	2 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%	86%	86%
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	14-DIP Module, 6 Leads	7-SIP Module, 5 Leads	7-SIP Module, 5 Leads
Size / Dimension	0.80" x 0.40" x 0.32"	0.77" x 0.28" x 0.40"	0.77" x 0.28" x 0.40"
Product Status	Obsolete	Active	Active
Approval Agency	CB Scheme, EN, IEC, UL	cURus	cURus
Standard Number	55024; 55032 Class A; 60950-1	62368-1	62368-1
RoHS Status	RoHS Compliant	-	ROHS3 Compliant
Inventory	606 Pcs	813 Pcs	1070 Pcs

Engineering Selection Recommendations

The PDM2-S5-D15-D is obsolete. Substitution should use parts with matching electrical specifications, compliance status, and approval certifications. PDME2-S5-D15-D and PDME2-S5-D15-S meet the required electrical parameters: input voltage range, output voltages, output currents, power, isolation voltage, and number of outputs. Both substitutes maintain ITE (Commercial) application suitability and through-hole mounting.

PDME2-S5-D15-S is ROHS3 compliant with a cURus approval agency and standard 62368-1. PDME2-S5-D15-D also carries cURus certification and standard 62368-1. Consider regulatory and certification differences against system-level compliance requirements. Package variation (SIP vs DIP module, leads count) is present; mechanical compatibility must be verified based strictly on provided mechanical dimensions and lead configuration.

Frequently Asked Questions (FAQ)

Q1: What key criteria determine if PDME2-S5-D15-D or PDME2-S5-D15-S is a suitable substitute for PDM2-S5-D15-D?
A1: Key criteria are matching input voltage range (4.5V–5.5V), output voltages (15V, -15V), output currents (67mA each), power rating (2W), voltage isolation (1.5kV), number of outputs (2), mounting type (through hole), and application suitability (ITE Commercial). Approval agency and RoHS compliance must also align with system requirements.

Q2: Are there differences in compliance or certifications between the main and substitute parts?
A2: The main part is certified to CB Scheme, EN, IEC, UL, and standards 55024; 55032 Class A; 60950-1. Substitute parts are certified to cURus and standard 62368-1. RoHS compliance varies—PDME2-S5-D15-S is ROHS3 compliant.

Q3: How does the package/case differ between the main and substitute options?
A3: The main part uses a 14-DIP module, 6 leads, sized 0.80" x 0.40" x 0.32". Substitutes use a 7-SIP module, 5 leads, sized 0.77" x 0.28" x 0.40". Lead counts and dimensions should be verified for mechanical compatibility.

Q4: Is efficiency a determining parameter for substitution?
A4: Efficiency for the main part is 84%, while both substitutes specify 86%. All other electrical and mechanical requirements are met.

Q5: Does mounting type affect substitute compatibility?
A5: All parts are through-hole mounted. Mechanical compatibility regarding PCB layout should be confirmed based on specified dimensions and lead configuration provided above.

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