AP1184T5-18L-U Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The AP1184T5-18L-U is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 1.8V output at 4A in a TO-220-5 package. This component is classified as a Power Management (PMIC) device and is currently discontinued at DiGi Electronics. Due to its discontinued status, identifying equivalent and substitute parts is essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

AP1184T5-18L-U

Diodes IncorporatedIn Stock: 1150AP1184T5-18L-U Datasheet

Current PartRFQ

AP1184T5-18L-U

Diodes IncorporatedIn Stock: 1150AP1184T5-18L-U Datasheet

Parametric EquivalentRFQ

MIC39501-1.8WT

Microchip TechnologyIn Stock: 2360MIC39501-1.8WT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP1184T5-18L-U is determined by the following critical parameters:

• Fixed output voltage of 1.8V
• Positive output configuration
• TO-220-5 package and through-hole mounting
• Maximum input voltage of 16V
• Output current capability of 4A or greater
• ROHS3 compliance
• Over Current and Over Temperature protection features

The MIC39501-1.8WT qualifies as a manufacturer-recommended substitute based on matching these core electrical and mechanical specifications. While the MIC39501-1.8WT provides enhanced performance characteristics, the fundamental substitution criteria remain aligned with the original part's functional requirements.

Parameter Comparison

Engineering Selection Recommendations

The MIC39501-1.8WT is the manufacturer-recommended substitute for the AP1184T5-18L-U. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The MIC39501-1.8WT is currently in active production with established inventory availability, addressing the discontinued status of the original part.

The substitute part exceeds the minimum electrical requirements of the AP1184T5-18L-U in output current capacity (5A versus 4A) and provides improved dropout voltage performance (0.575V @ 5A versus 0.85V @ 4A). The extended operating temperature range (-40°C to 125°C versus 0°C to 125°C) and additional reverse polarity protection feature provide enhanced system robustness.

Both parts share identical TO-220-5 packaging and through-hole mounting characteristics, enabling direct mechanical and electrical integration into existing PCB designs without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the MIC39501-1.8WT directly replace the AP1184T5-18L-U in existing designs?

A: Yes. Both parts feature identical TO-220-5 packaging, through-hole mounting, 1.8V fixed output, and 16V maximum input voltage. Pin compatibility and electrical characteristics align for direct substitution.

Q: What are the key differences between these parts?

A: The MIC39501-1.8WT provides higher output current (5A versus 4A), lower dropout voltage (0.575V @ 5A versus 0.85V @ 4A), extended operating temperature range (-40°C to 125°C versus 0°C to 125°C), and additional reverse polarity protection. The MIC39501-1.8WT is in active production status.

Q: Are both parts RoHS compliant?

A: Yes. Both the AP1184T5-18L-U and MIC39501-1.8WT are ROHS3 compliant and REACH unaffected.

Q: Does the higher output current rating of the MIC39501-1.8WT affect circuit design?

A: No. The higher current rating (5A) is a performance enhancement that does not require design changes. Existing circuits designed for 4A operation remain fully compatible.

Q: What is the moisture sensitivity level difference?

A: The AP1184T5-18L-U has MSL 1 (Unlimited), while the MIC39501-1.8WT has MSL 3 (168 Hours). This affects storage and handling procedures but does not impact electrical performance or substitution compatibility.