UCC28782ARTWT Equivalent & Substitute Parts

Part Overview

The UCC28782ARTWT is an offline switch flyback converter IC manufactured by Texas Instruments, designed for isolated power management applications. This device operates at 420kHz switching frequency and supports supply voltages from 14V to 34V. The component is housed in a 24-WQFN (4x4) package with exposed pad and is currently in Active product status.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when inventory constraints necessitate sourcing from alternative distribution channels. The UCC28782ARTWT is available in Tape & Reel packaging; however, equivalent variants exist in alternative packaging formats that maintain identical electrical and mechanical specifications.

Substiute Parts

UCC28782ARTWT

Texas InstrumentsIn Stock: 1347UCC28782ARTWT Datasheet

Current PartRFQ

UCC28782ARTWR

Texas InstrumentsIn Stock: 3183UCC28782ARTWR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UCC28782ARTWT is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Identical topology (Flyback)
• Identical output isolation (Isolated)
• Identical supply voltage range (14V ~ 34V)
• Identical switching frequency (420kHz)
• Identical fault protection features (Current Limiting, Over Temperature, Over Voltage, Short Circuit)
• Identical operating temperature range (-40°C ~ 125°C)

Mechanical Equivalence Requirements:

• Identical package type (24-WQFN with exposed pad)
• Identical mounting type (Surface Mount)
• Identical base product number (UCC28782)

Compliance Equivalence Requirements:

• RoHS3 compliance maintained
• REACH unaffected status maintained

The primary distinction between the main part and its substitute lies in packaging format (Tape & Reel versus Cut Tape & Digi-Reel) and product status classification. These differences do not affect electrical or mechanical performance and are driven by supply chain and distribution requirements.

Parameter Comparison

Engineering Selection Recommendations

UCC28782ARTWT (Tape & Reel Format): This part maintains Active product status with Texas Instruments, indicating ongoing manufacturer support and availability. The MSL rating of 1 (Unlimited) provides extended shelf life without moisture sensitivity constraints. This variant is recommended for new designs and applications requiring long-term supply chain stability.

UCC28782ARTWR (Cut Tape & Digi-Reel Format): This part carries Obsolete product status, indicating discontinued manufacturer support. The MSL rating of 2 (1 Year) imposes moisture sensitivity constraints requiring controlled storage conditions. This variant is suitable only for replacement or repair applications where existing inventory exists and immediate availability is prioritized over long-term supply assurance.

Both parts maintain identical electrical performance, fault protection capabilities, and thermal operating ranges. Selection between these variants should be based on packaging requirements for manufacturing processes and product lifecycle status requirements for the end application.

Frequently Asked Questions (FAQ)

Q: Are UCC28782ARTWT and UCC28782ARTWR electrically interchangeable?

A: Yes. Both parts share identical electrical specifications including topology, supply voltage range (14V ~ 34V), switching frequency (420kHz), fault protection features, and operating temperature range (-40°C ~ 125°C). They are functionally equivalent in circuit operation.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel packaging supplies components on cut tape segments or alternative reel formats, typically used for lower-volume or manual assembly processes. Both formats contain identical components in the same 24-WQFN package.

Q: Why does UCC28782ARTWR have Obsolete status while UCC28782ARTWT is Active?

A: Product status reflects manufacturer support and availability. Active status indicates the manufacturer continues production and support. Obsolete status indicates the manufacturer has discontinued production. This distinction affects long-term supply chain planning but does not impact electrical or mechanical performance of existing inventory.

Q: What does MSL rating 1 versus MSL rating 2 mean for component handling?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture sensitivity constraints. MSL 2 indicates a 1-year shelf life under controlled moisture conditions. Components with MSL 2 require storage in dry environments and may require baking before reflow soldering if moisture absorption occurs. UCC28782ARTWT (MSL 1) has less stringent handling requirements than UCC28782ARTWR (MSL 2).

Q: Can I use UCC28782ARTWR as a direct replacement in new production designs?

A: UCC28782ARTWR is not recommended for new production designs due to Obsolete product status. New designs should use UCC28782ARTWT (Active status) to ensure long-term supply chain availability and manufacturer support. UCC28782ARTWR is appropriate only for repair or replacement of existing assemblies.

Q: Are both parts RoHS3 compliant?

A: Yes. Both UCC28782ARTWT and UCC28782ARTWR maintain ROHS3 compliance and REACH unaffected status, meeting environmental and regulatory requirements for EU and global markets.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: identical base product number (UCC28782), identical topology (Flyback), identical output isolation (Isolated), identical supply voltage range (14V ~ 34V), identical switching frequency (420kHz), identical fault protection (Current Limiting, Over Temperature, Over Voltage, Short Circuit), identical operating temperature range (-40°C ~ 125°C), identical package type (24-WQFN with exposed pad), and identical mounting type (Surface Mount).