Equivalent & Substitute Parts for PT7773A

Part Overview

The PT7773A from Texas Instruments is a Non-Isolated Point-of-Load (PoL) DC-DC Converter module designed for ITE (Commercial) applications. It features a single output with a programmable voltage range from 0.8V to 3.1V, a maximum output current of 32A, and operates from a 4.5V to 5.5V input supply. The module offers through-hole, horizontal mounting in a 27-SIP package. The PT7773A is marked as obsolete; therefore, identifying direct substitute or replacement models is necessary to ensure supply continuity and support ongoing designs.

Substiute Parts

PT7773A

Texas InstrumentsIn Stock: 1186PT7773A Datasheet

Current PartRFQ

PTH08T250WAD

Texas InstrumentsIn Stock: 10126PTH08T250WAD Datasheet

MFR RecommendedRFQ

PTH08T250WAZ

Texas InstrumentsIn Stock: 1386PTH08T250WAZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute and equivalent parts for the PT7773A are grouped based strictly on matching the critical application and fundamental electrical and mechanical parameters. These parameters are: type (Non-Isolated PoL Module), number of outputs, input voltage range, output voltage range, maximum output current, application type, operating temperature range, efficiency, mounting type, package/case, RoHS compliance, and REACH status.

Parameter Comparison

Engineering Selection Recommendations

The PT7773A is obsolete, while PTH08T250WAD and PTH08T250WAZ are active with new original inventory available. All parts are ROHS3 compliant and REACH unaffected, with the same ECCN classification (EAR99). Moisture Sensitivity Level differs, with the PT7773A rated at MSL 1 (Unlimited), and the substitute parts at MSL 3 (168 Hours). Package types and mounting configurations must be matched precisely for mechanical compatibility, as the substitutes utilize different package and mounting types.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting PT7773A?
A1: Key substitution criteria include module type, number of outputs, input and output voltage range, output current rating, application type, operating temperature range, efficiency, mounting type, package/case, RoHS compliance, and REACH status.

Q2: Can PT7773A be directly replaced with PTH08T250WAD or PTH08T250WAZ?
A2: Both substitutes meet or exceed critical electrical specifications but differ in package type, mounting style, and moisture sensitivity rating. Direct layout or assembly substitution requires confirmation of mounting and packaging compatibility.

Q3: How does moisture sensitivity impact substitute selection?
A3: PT7773A is MSL 1 (unlimited floor life), while PTH08T250WAD and PTH08T250WAZ are MSL 3 (168 hours). Shelf life and handling processes need to align with MSL requirements for alternative parts.

Q4: Are compliance and certification levels equivalent across these modules?
A4: All listed modules are ROHS3 compliant and REACH unaffected with ECCN EAR99, ensuring similar compliance and certification status.

Q5: What should be considered regarding package and mounting differences?
A5: Substitute parts use different package formats and mounting types (through-hole versus surface mount, and SIP versus DIP/SMD packages). Assembly processes and PCB layout compatibility must be verified before mechanical interchange.