Equivalent & Substitute Parts for PEM1-S24-D15-S

Part Overview

PEM1-S24-D15-S is an isolated DC-DC converter from CUI Inc., delivering dual ±15V outputs at 33mA maximum each, derived from a 21.6V–26.4V input, with a 1W maximum power rating. This device is provided in a 7-SIP module, 5-lead through-hole configuration and is RoHS compliant. It is often necessary to identify alternative models to ensure supply chain resilience, production continuity, and compliance with new design or inventory requirements, particularly when the main part is in active status but alternate sources are required.

Key Parameters

Parameter	PEM1-S24-D15-S
Type	Isolated Module
Number of Outputs	2
Voltage - Input (Min)	21.6V
Voltage - Input (Max)	26.4V
Voltage - Output 1	15V
Voltage - Output 2	-15V
Current - Output (Max)	33mA, 33mA
Power (Watts)	1 W
Voltage - Isolation	3 kV
Efficiency	79%
Mounting Type	Through Hole
Package / Case	7-SIP Module, 5 Leads
Size / Dimension	0.77" L x 0.24" W x 0.37" H (19.5mm x 6.0mm x 9.3mm)
Operating Temperature	-40°C ~ 105°C
Applications	ITE (Commercial)
RoHS Status	RoHS Compliant
MSL	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic for DC-DC isolated module converters is defined solely by parameters explicitly outlined:

Input voltage range (21.6V–26.4V)
Dual outputs at ±15V
Output current at least 33mA per output
Isolation voltage of 3kV
Through hole mounting in a 7-SIP, 5-lead package
Physical dimensions within allowable limits
RoHS compliance and inventory status

Only parts with matching or exceeding these specifications are listed as substitutes.

Parameter Comparison

Parameter	PEM1-S24-D15-S	PEME1-S24-D15-S
Type	Isolated Module	Isolated Module
Number of Outputs	2	2
Voltage - Input (Min)	21.6V	21.6V
Voltage - Input (Max)	26.4V	26.4V
Voltage - Output 1	15V	15V
Voltage - Output 2	-15V	-15V
Current - Output (Max)	33mA, 33mA	34mA, 34mA
Power (Watts)	1 W	1 W
Voltage - Isolation	3 kV	3 kV
Efficiency	79%	79%
Mounting Type	Through Hole	Through Hole
Package / Case	7-SIP Module, 5 Leads	7-SIP Module, 5 Leads
Size / Dimension	0.77" L x 0.24" W x 0.37" H (19.5mm x 6.0mm x 9.3mm)	0.77" L x 0.24" W x 0.40" H (19.7mm x 6.0mm x 10.2mm)
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C (With Derating)
Applications	ITE (Commercial)	ITE (Commercial)
RoHS Status	RoHS Compliant	RoHS Compliant
MSL	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both PEM1-S24-D15-S and PEME1-S24-D15-S are active status DC-DC converters with RoHS compliance and are suitable for ITE (Commercial) applications. Each features a through-hole mounting profile, 7-SIP 5-lead package, identical input and output voltage ranges, matching power and efficiency ratings, and consistent isolation voltage. Both parts are in inventory and meet regulatory requirements.

Frequently Asked Questions (FAQ)

Q: What key parameters ensure compatibility when substituting PEM1-S24-D15-S with PEME1-S24-D15-S?
A: Input voltage range, output voltages, output current ratings, package outline, mounting type, isolation voltage, efficiency, and RoHS status determine substitute compatibility.

Q: Is there a difference in the physical dimensions or package?
A: PEM1-S24-D15-S and PEME1-S24-D15-S share the 7-SIP Module, 5 Leads package. PEME1-S24-D15-S has a slightly greater height (10.2mm compared to 9.3mm).

Q: Are both DC-DC converter modules RoHS compliant and inventory available?
A: Yes, both PEM1-S24-D15-S and PEME1-S24-D15-S are RoHS compliant and available from stock.

Q: Are there differences in certifications or approvals?
A: PEM1-S24-D15-S lists CB Scheme, EN, IEC, UL approvals, while PEME1-S24-D15-S lists CE, cURus.

Q: Does the operating temperature range differ?
A: PEM1-S24-D15-S operates from -40°C to 105°C; PEME1-S24-D15-S specifies -40°C to 105°C with derating.

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