Equivalent & Substitute Parts Reference: RB-053.3S

Part Overview

RB-053.3S from Recom Power is an isolated DC-DC converter designed for commercial ITE applications, providing a regulated 3.3V output at up to 303mA from a 4.5V to 5.5V input. This module is RoHS3 compliant, uses through-hole mounting in a 7-SIP package, and features overcurrent protection. The product is active with significant inventory available. Identifying substitute parts is necessary to ensure uninterrupted production, compatibility in design, and sourcing flexibility.

Substiute Parts

RB-053.3S

Recom PowerIn Stock: 12493RB-053.3S Datasheet

Current PartRFQ

B0503LS-1WR3

Mornsun America, LLCIn Stock: 1505B0503LS-1WR3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute selection for the DC-DC converter category is strictly based on alignment of the following core parameters: module type (Isolated Module), input voltage range (4.5V – 5.5V), output voltage (3.3V), maximum output current (303mA), power rating (1W), voltage isolation rating, mounting type (through hole), package/case dimensions, application type (ITE/Commercial), RoHS compliance, and operating temperature limits. Only parts meeting all listed values are considered suitable substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both the RB-053.3S and B0503LS-1WR3 isolated DC-DC converters are listed as active products and meet RoHS compliance, with MSL 1 and REACH unaffected status. Each part is compatible for ITE (commercial) applications. Certifications for B0503LS-1WR3 include CB, CE, and cURus approvals. Inventory is confirmed for both models.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting RB-053.3S in a design?
A1: The substitute must match the isolated module type, input voltage range (4.5V to 5.5V), output voltage (3.3V), output current (303mA), power rating (1W), voltage isolation, mounting type, package/case dimensions, and operating temperature range.

Q2: Is there a difference in mounting configuration or physical dimensions between RB-053.3S and B0503LS-1WR3?
A2: Both parts use a through-hole 7-SIP module package with identical physical dimensions. B0503LS-1WR3 uses 4 leads, while RB-053.3S uses 5 leads.

Q3: Are RoHS, REACH status, and MSL compliance important for substitution?
A3: Yes, both parts are RoHS compliant, have unrestricted Moisture Sensitivity Level (MSL 1), and are unaffected by REACH, supporting compliance in regulated industries.

Q4: What isolation voltage and efficiency specifications are relevant for substitution?
A4: The RB-053.3S has a 1 kV isolation rating and 75% efficiency; B0503LS-1WR3 provides 1.5 kV isolation and 74% efficiency. Both fall within acceptable engineering variance for the category.

Q5: Does the substitute meet international approval standards?
A5: B0503LS-1WR3 is approved by CB, CE, and cURus agencies, meeting international conformity for commercial applications. No agency approvals are specified for RB-053.3S in the provided data.