Equivalent & Substitute Parts for PSR54-7

Part Overview

The PSR54-7 (Bel Power Solutions) is a DC DC converter categorized as a Non-Isolated PoL Module with conformal coating. It delivers a single 5V output at up to 4A from a 7V-40V DC input, engineered for ITE (Commercial) and Railway applications. The product is currently active and distributed in a 6-DIP module form factor. Finding valid alternative models is necessary for continuity in manufacturing, inventory flexibility, and risk mitigation in the event of supply chain changes or product lifecycle transitions.

Key Parameters

Parameter	Value
Manufacturer Part Number	PSR54-7
Series	Melcher PSR
Product Status	Active
Type	Non-Isolated PoL Module, Conformal Coated
Number of Outputs	1
Voltage - Input (Min)	7V
Voltage - Input (Max)	40V
Voltage - Output 1	5V
Current - Output (Max)	4A
Operating Temperature	-25°C ~ 71°C
Efficiency	83%
Mounting Type	Through Hole
Package / Case	6-DIP Module
Size / Dimension	2.76" L x 1.98" W x 0.99" H (70.2mm x 50.2mm x 25.2mm)
RoHS	ROHS3 Compliant
MSL	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution is strictly determined by matching the following parameters: DC input voltage range (minimum and maximum), output voltage and current rating, number of outputs, package or mechanical form factor, mounting type, operating temperature range, efficiency, compliance (RoHS, MSL, REACH), and product status (active/inactive). Only models with complete alignment on these parameters are considered valid substitutes.

Parameter Comparison

Parameter	PSR54-7	PSA55-7R
Manufacturer	Bel Power Solutions	Bel Power Solutions
Series	Melcher PSR	Melcher PSA
Product Status	Active	Active
Type	Non-Isolated PoL Module, Conformal Coated	Non-Isolated PoL Module, Conformal Coated
Number of Outputs	1	1
Voltage - Input (Min)	7V	7V
Voltage - Input (Max)	40V	35V
Voltage - Output 1	5V	5V
Current - Output (Max)	4A	5A
Operating Temperature	-25°C ~ 71°C	-25°C ~ 71°C
Efficiency	83%	83%
Mounting Type	Through Hole	Through Hole
Package / Case	6-DIP Module	6-DIP Module
Size / Dimension	2.76" L x 1.98" W x 0.99" H (70.2mm x 50.2mm x 25.2mm)	2.76" L x 1.98" W x 0.99" H (70.2mm x 50.2mm x 25.2mm)
RoHS	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both PSR54-7 and PSA55-7R are active products, ROHS3 compliant, have an MSL of 1 (unlimited), and a REACH status of unaffected. Based strictly on product status and environmental compliance, both part numbers meet current selection requirements within this product category.

Frequently Asked Questions (FAQ)

Q1: What are the essential criteria for substituting PSR54-7 with PSA55-7R in a design?
A1: The essential criteria are matching input voltage range, output voltage, output current rating, package type, mounting method, operating temperature range, efficiency, and environmental compliance.

Q2: Is the 6-DIP module form factor and through hole mounting identical on both PSR54-7 and PSA55-7R?
A2: Both parts use the 6-DIP module package and through hole mounting, with identical physical dimensions.

Q3: Are there differences in output current capability between PSR54-7 and PSA55-7R?
A3: PSA55-7R has an output current max of 5A, while PSR54-7 is rated at 4A.

Q4: Does the lower maximum input voltage rating of PSA55-7R compared to PSR54-7 affect substitution?
A4: PSA55-7R is rated for a maximum input of 35V, while PSR54-7 handles up to 40V. Input voltage requirements must align with the substitute’s specification.

Q5: Do both models meet current RoHS and REACH environmental standards?
A5: Both PSR54-7 and PSA55-7R are ROHS3 compliant and have REACH status as unaffected.

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