AP1084D33L-13 Equivalent & Substitute Parts

Part Overview

The AP1084D33L-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 3.3V output at 5A in a TO-252-3 (DPAK) surface mount package. This device functions as a positive fixed output regulator with integrated over-current and over-temperature protection.

The AP1084D33L-13 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

AP1084D33L-13

Diodes IncorporatedIn Stock: 58214AP1084D33L-13 Datasheet

Current PartRFQ

LD1117ADT33TR

STMicroelectronicsIn Stock: 22860LD1117ADT33TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP1084D33L-13 must satisfy the following critical parameters to ensure functional compatibility:

• Output voltage fixed at 3.3V
• Surface mount packaging in TO-252-3 (DPAK) form factor
• Positive output configuration with fixed output type
• Single regulator output
• Over-current and over-temperature protection
• Operating temperature range of 0°C ~ 125°C
• RoHS3 compliance

The LD1117ADT33TR from STMicroelectronics meets these core substitution criteria. However, the output current rating differs: the LD1117ADT33TR provides 1A maximum output current, compared to the 5A rating of the AP1084D33L-13. This difference is a critical design consideration and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The LD1117ADT33TR is an active product from STMicroelectronics with full RoHS3 compliance and REACH unaffected status, making it suitable for new designs and ongoing production support. The identical package form factor (TO-252-3 DPAK) and matching output voltage (3.3V) enable direct PCB layout compatibility.

The primary design constraint is the reduced output current specification: the LD1117ADT33TR is rated for 1A maximum output, whereas the AP1084D33L-13 delivers 5A. Applications requiring the full 5A output capability cannot use this substitute without circuit redesign or parallel device configurations. Applications with load currents at or below 1A can proceed with the LD1117ADT33TR as a direct replacement.

Both devices maintain identical quiescent current (10 mA) and operating temperature ranges, ensuring thermal and power consumption characteristics remain consistent within the 1A current limit.

Frequently Asked Questions (FAQ)

Q: Can the LD1117ADT33TR replace the AP1084D33L-13 in all applications?

A: No. The LD1117ADT33TR is suitable only for applications where the load current does not exceed 1A. The AP1084D33L-13 is rated for 5A output current. If your application requires currents above 1A, this substitute is not compatible without circuit modification.

Q: Are the packages physically identical?

A: Yes. Both devices use the TO-252-3 DPAK (2 Leads + Tab) package, designated SC-63. PCB footprints are identical, enabling direct physical replacement on the circuit board.

Q: What is the output voltage difference between these parts?

A: Both devices provide a fixed 3.3V output. There is no voltage difference.

Q: Does the LD1117ADT33TR have the same protection features?

A: Yes. Both the AP1084D33L-13 and LD1117ADT33TR include over-current and over-temperature protection.

Q: What is the maximum input voltage for each device?

A: The AP1084D33L-13 accepts input voltages up to 12V. The LD1117ADT33TR accepts input voltages up to 15V. Both operate within standard industrial input voltage ranges.

Q: Are both devices RoHS compliant?

A: Yes. Both the AP1084D33L-13 and LD1117ADT33TR are ROHS3 compliant and REACH unaffected.

Q: What is the product status difference?

A: The AP1084D33L-13 is obsolete. The LD1117ADT33TR is an active product with ongoing manufacturer support and availability.