AP1084D33G-13 Equivalent & Substitute Parts

Part Overview

The AP1084D33G-13 is a linear voltage regulator IC from Diodes Incorporated, designed to deliver a fixed 3.3V output at 5A maximum current in a TO-252-3 (DPAK) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The regulator incorporates over-current and over-temperature protection features suitable for general-purpose power management applications requiring stable 3.3V rails.

Substiute Parts

AP1084D33G-13

Diodes IncorporatedIn Stock: 220117AP1084D33G-13 Datasheet

Current PartRFQ

AZ1084CD-3.3TRG1

Diodes IncorporatedIn Stock: 255135AZ1084CD-3.3TRG1 Datasheet

MFR RecommendedRFQ

LD1117ADT33TR

STMicroelectronicsIn Stock: 22860LD1117ADT33TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP1084D33G-13 is determined by the following critical parameters:

• Fixed output voltage of 3.3V
• Output current capability of 5A or greater
• Maximum input voltage of 12V or greater
• Surface mount DPAK (TO-252-3) package compatibility
• Over-current and over-temperature protection
• ROHS3 compliance

The substitute parts listed below meet these core electrical and mechanical requirements, enabling direct functional replacement in applications designed for the AP1084D33G-13.

Parameter Comparison

Engineering Selection Recommendations

AZ1084CD-3.3TRG1 is the primary substitute for the AP1084D33G-13. Both parts are manufactured by Diodes Incorporated, share identical output voltage and current specifications, and are packaged in TO-252-3 (DPAK). The AZ1084CD-3.3TRG1 is in active production status, ensuring long-term availability. The part is supplied in Tape & Reel packaging and maintains ROHS3 compliance with a moisture sensitivity level of 3 (168 hours).

LD1117ADT33TR from STMicroelectronics is a secondary substitute suitable only for applications where the maximum output current requirement does not exceed 1A. While this part shares the same 3.3V output voltage, TO-252-3 package, and protection features, its 1A current rating makes it unsuitable for designs requiring the full 5A capability of the original AP1084D33G-13. The LD1117ADT33TR offers a higher maximum input voltage (15V) and lower dropout voltage at its rated current (1.3V @ 1A), with active product status and unlimited moisture sensitivity.

Frequently Asked Questions (FAQ)

Q: Can the AZ1084CD-3.3TRG1 be used as a direct replacement for the AP1084D33G-13?

A: Yes. Both parts deliver 3.3V at 5A maximum output current in the same TO-252-3 (DPAK) package with identical protection features and operating temperature range. The primary difference is product status (active vs. obsolete) and packaging format (Tape & Reel vs. Cut Tape).

Q: Is the LD1117ADT33TR compatible with the AP1084D33G-13?

A: The LD1117ADT33TR is compatible only in applications where output current does not exceed 1A. Its 1A maximum output current rating makes it unsuitable for designs requiring the full 5A capability of the AP1084D33G-13. Physical package compatibility exists, but electrical performance differs significantly.

Q: What are the key differences between the substitute parts?

A: The AZ1084CD-3.3TRG1 maintains full electrical equivalence with the AP1084D33G-13 (5A output current). The LD1117ADT33TR reduces output current to 1A but increases maximum input voltage to 15V and improves dropout voltage performance at its rated current level.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The AP1084D33G-13, AZ1084CD-3.3TRG1, and LD1117ADT33TR are all ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity difference between the main part and substitutes?

A: The AP1084D33G-13 has MSL 1 (unlimited), while the AZ1084CD-3.3TRG1 has MSL 3 (168 hours). The LD1117ADT33TR has MSL 1 (unlimited). MSL 3 requires controlled storage and handling within 168 hours of package opening.