SPB03B-12 Equivalent & Substitute Parts Reference

Part Overview

The SPB03B-12 from MEAN WELL USA Inc. is an isolated DC-DC converter module, providing a single 12V output at up to 250mA from an 18V to 36V input range, with a power rating of 3W. It includes features such as remote on/off, overcurrent protection (OCP), and short circuit protection (SCP). The part is packaged in an 8-SIP module with 7 leads, suitable for through-hole mounting, and operates in harsh environments with an operating temperature range of -40°C to 85°C (with derating). The product status is listed as obsolete, making it essential to identify equivalent parts to support ongoing designs, maintenance, and production continuity.

Substiute Parts

SPB03B-12

MEAN WELL USA Inc.In Stock: 1234SPB03B-12 Datasheet

Current PartRFQ

RS3-2412S

Recom PowerIn Stock: 12319RS3-2412S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute part selection for the SPB03B-12 isolated module DC-DC converter is determined strictly by matching the following key electrical and mechanical parameters: input voltage range (18V–36V), single output voltage of 12V, maximum output current of 250mA, total output power of 3W, voltage isolation of 1kV, module type (isolated), feature set (remote on/off, OCP, SCP), form factor and mounting type (8-SIP, through hole), and regulatory compliance. Only parts that meet these criteria are included as substitutes.

Parameter Comparison

Engineering Selection Recommendations

Due to the obsolete status of the SPB03B-12, selection of a substitute part is necessary for continued design availability and manufacturing support. The RS3-2412S from Recom Power matches the critical electrical, mechanical, and regulatory compliance parameters listed for the SPB03B-12, including input/output voltages, output current, isolation, size, package type, RoHS and REACH compliance, MSL rating, ECCN, and HTSUS. The RS3-2412S is classified as an active product and is available in inventory. Substitution should be based strictly on these matched parameters and product status.

Frequently Asked Questions (FAQ)

Q1: Which parameters must be matched for a valid DC-DC converter substitute in the isolated module category?
A1: The substitute must match input voltage range, output voltage and current, power rating, isolation voltage, number of outputs, form factor, mounting type, package/case, features, operating temperature range, control features, regulatory compliance (RoHS, REACH), moisture sensitivity level, ECCN, and HTSUS.

Q2: Does the RS3-2412S fit the same PCB footprint and mounting requirements as the SPB03B-12?
A2: Both models share the 8-SIP module, 7 leads, through-hole mounting, and identical dimensions, supporting direct replacement in compatible socketed designs without physical modification, based on provided parameters.

Q3: Are all protection and control features identical between SPB03B-12 and RS3-2412S?
A3: Both include remote on/off and SCP (short circuit protection); SPB03B-12 additionally specifies OCP (overcurrent protection). Refer directly to key feature parameters for precise compatibility.

Q4: Are there any differences in operating temperature that affect substitution?
A4: The SPB03B-12 operates from -40°C to 85°C (with derating); RS3-2412S operates from -40°C to 71°C. This difference may affect suitability depending on the required operating conditions of the application, as per the stated ranges.

Q5: Is regulatory compliance equivalent between the two part numbers?
A5: Both the SPB03B-12 and RS3-2412S are listed as ROHS3 compliant, REACH unaffected, and have matching ECCN and HTSUS codes per provided data.