MIC39150-1.8BU TR Equivalent & Substitute Parts

Part Overview

The MIC39150-1.8BU TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 1.8V output applications with 1.5A current capacity in a TO-263-3 surface mount package. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. The part delivers regulated 1.8V output with integrated protection features including over-current, over-temperature, and reverse polarity protection, suitable for applications requiring stable low-voltage power delivery in compact form factors.

Substiute Parts

MIC39150-1.8BU TR

Microchip TechnologyIn Stock: 2176MIC39150-1.8BU TR Datasheet

Current PartRFQ

MIC39150-1.8WU-TR

Microchip TechnologyIn Stock: 2067MIC39150-1.8WU-TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC39150-1.8BU TR is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 1.8V fixed
• Output current rating: 1.5A
• Maximum input voltage: 16V
• Voltage dropout characteristic: 0.5V @ 1.5A
• Package configuration: TO-263-3 surface mount
• Protection feature set: Over-current, over-temperature, and reverse polarity protection
• Operating temperature range: -40°C ~ 125°C

The MIC39150-1.8WU-TR qualifies as a parametric equivalent based on identical electrical specifications and package requirements. Differentiation between these parts is limited to packaging format (tape & reel variant designation) and compliance status.

Parameter Comparison

Engineering Selection Recommendations

The MIC39150-1.8WU-TR serves as the direct active equivalent for the obsolete MIC39150-1.8BU TR. Both parts maintain identical electrical performance across all specified parameters including output voltage, current capacity, dropout voltage, and protection characteristics. The primary distinction is product lifecycle status: the MIC39150-1.8BU TR is obsolete while the MIC39150-1.8WU-TR remains in active production.

For new designs or production continuity, the MIC39150-1.8WU-TR is the appropriate selection. This part additionally provides ROHS3 compliance, addressing regulatory requirements that may not apply to the non-compliant original part. Both components share identical moisture sensitivity classification and thermal operating range, ensuring functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the MIC39150-1.8WU-TR directly replace the MIC39150-1.8BU TR in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The MIC39150-1.8WU-TR is the active production equivalent and can be used as a direct substitute without circuit modification.

Q: What is the difference between the BU and WU designations?

A: The designations indicate packaging format variants within the same product family. Both deliver identical electrical performance in the TO-263-3 package configuration.

Q: Does the RoHS compliance difference affect compatibility?

A: RoHS compliance status reflects manufacturing process standards and material composition. From a functional and electrical standpoint, both parts perform identically. RoHS3 compliance of the MIC39150-1.8WU-TR may be required for applications subject to specific regulatory frameworks.

Q: Are the moisture sensitivity levels the same?

A: Yes. Both parts carry MSL 3 (168 Hours) classification, requiring identical handling and storage protocols during manufacturing and assembly processes.

Q: What protection features are included in both parts?

A: Both the MIC39150-1.8BU TR and MIC39150-1.8WU-TR include over-current protection, over-temperature protection, and reverse polarity protection.