B1205S-1WR2 Equivalent & Substitute Parts Engineering Reference

Part Overview

The B1205S-1WR2 is an isolated module DC-DC converter manufactured by Mornsun America, LLC. It provides a single 5V output at up to 200mA from an input voltage range of 10.8V to 13.2V, with a rated output power of 1W and 1.5kV isolation. It is designed for ITE (Commercial) applications with through-hole mounting in a 4-SIP module case. The B1205S-1WR2 is now classified as obsolete, making it necessary to identify alternative models with strictly matching electrical and mechanical parameters for continuity in existing designs.

Substiute Parts

B1205S-1WR2

Mornsun America, LLCIn Stock: 18056B1205S-1WR2 Datasheet

Current PartRFQ

B1205S-1WR3

Mornsun America, LLCIn Stock: 1584B1205S-1WR3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is determined strictly by matching the following key parameters: manufacturer, type (isolated module), input voltage range (10.8V–13.2V), output voltage (5V), maximum output current (200mA), power rating (1W), isolation voltage (1.5kV), application (ITE - Commercial), operating temperature (-40°C to 105°C with derating), efficiency (80%), mounting type (through hole), package/case (4-SIP module), dimensions, approvals (CB, CE, cURus, UL), and RoHS status. Only parts matching these exact specifications are considered valid substitutes.

Parameter Comparison

Engineering Selection Recommendations

The B1205S-1WR2 is obsolete; the B1205S-1WR3 from Mornsun America, LLC matches the required input voltage, output voltage, current, power, isolation, operating temperature, efficiency, mounting type, package/case, dimensions, approval agencies, and RoHS3 compliance. The two parts differ in their standard numbers: B1205S-1WR2 complies with 60950-1, whereas B1205S-1WR3 complies with 62368-1. Both parts meet the same approval criteria (CB, CE, cURus, UL), are RoHS3 compliant, and are supplied in the same package and dimensions. The B1205S-1WR3 is active, while the B1205S-1WR2 is obsolete.

Frequently Asked Questions (FAQ)

Q1: What qualifies B1205S-1WR3 as a substitute for B1205S-1WR2?
A1: B1205S-1WR3 matches all key electrical and mechanical parameters, including input voltage range, output voltage, output current, power, isolation voltage, efficiency, operating temperature, mounting type, package/case, dimensions, approvals, and RoHS status.

Q2: Are there any differences between B1205S-1WR2 and B1205S-1WR3?
A2: The main difference is in the compliance standard: B1205S-1WR2 meets 60950-1, while B1205S-1WR3 meets 62368-1. All other specified parameters are matched.

Q3: Is the substitute part form, fit, and function compatible?
A3: Yes, based strictly on the provided package/case, physical size, mounting type, and electrical ratings.

Q4: Are both parts RoHS compliant?
A4: Both B1205S-1WR2 and B1205S-1WR3 are ROHS3 compliant.

Q5: What package considerations exist between these two parts?
A5: Both are supplied in a 4-SIP module case with identical dimensions.

Q6: Do both parts have similar agency approvals?
A6: Both have CB, CE, cURus, and UL approvals as per the provided data.

Q7: Why is an alternative required?
A7: The B1205S-1WR2 is classified as obsolete; continued design or manufacturing requires the use of an active part number with matching parameters.