Equivalent & Substitute Parts for PT4141C

Part Overview

PT4141C from Texas Instruments is an isolated module DC-DC converter delivering a single 3.3V output at up to 5A from an input voltage range of 18V to 40V, rated for 20W output power. This device offers 1.5 kV isolation, UVLO protection, and operates within -40°C to 85°C. Its surface mount 8-SMD Module package measures 1.73" x 1.52" x 0.33". The part has entered obsolete status, requiring identification of alternative models with matching electrical and mechanical design constraints.

Substiute Parts

PT4141C

Texas InstrumentsIn Stock: 1116PT4141C Datasheet

Current PartRFQ

RP20-483.3SFW

Recom PowerIn Stock: 807RP20-483.3SFW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute models for PT4141C are based on strict equivalency across these parameters: output voltage (3.3V), output power (20W), single isolated output, input voltage range encompassing 18V, ROHS3 compliance, and ITE (Commercial) application suitability. Substitute selection also considers matching isolation voltage, mounting type, package format, output current capability, and regulatory statuses, without deviation beyond the provided input specification.

Parameter Comparison

Engineering Selection Recommendations

PT4141C is listed as obsolete. Substitute selection should be based on product status (active), ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity level (MSL 1, Unlimited). RP20-483.3SFW from Recom Power meets all listed compliance and regulatory requirements and is an active product suitable for use as a substitute under the provided constraints.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting PT4141C in a design?
A1: Substitution is based on identical output voltage (3.3V), output power (20W), single output configuration, input voltage range starting at 18V, and required compliance certifications.

Q2: How do mechanical differences affect substitution feasibility?
A2: Mounting type and package format must be considered. PT4141C uses a surface mount 8-SMD module, while RP20-483.3SFW uses a through-hole 6-DIP module. Proper board layout adaptation may be required.

Q3: Is there any change in application suitability between PT4141C and RP20-483.3SFW?
A3: Both parts are categorized for ITE (Commercial) applications as specified.

Q4: Are there differences in environmental and regulatory compliance?
A4: Both products are ROHS3 compliant, REACH unaffected, and carry an MSL rating of 1 (Unlimited).

Q5: On what basis was RP20-483.3SFW selected as a substitute?
A5: RP20-483.3SFW matches functional key parameters and compliance requirements strictly as provided in the input, with active product status.

Q6: What packaging differences exist between the main part and substitute?
A6: PT4141C is in an 8-SMD surface mount package; RP20-483.3SFW is in a 6-DIP through-hole package. Evaluate physical compatibility per design constraints.