MIC29301-12BU TR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MIC29301-12BU TR is a linear voltage regulator IC from Microchip Technology designed for positive fixed 12V output applications with 3A current capacity. This device operates in the TO-263-5 package and provides integrated protection features including over-current, over-temperature, reverse polarity, and transient voltage protection. The MIC29301-12BU TR is classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

MIC29301-12BU TR

Microchip TechnologyIn Stock: 1054MIC29301-12BU TR Datasheet

Current PartRFQ

MIC29301-12WU-TR

Microchip TechnologyIn Stock: 843MIC29301-12WU-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MIC29301-12BU TR is determined by strict equivalence across the following electrical and mechanical parameters:

• Fixed output voltage of 12V
• Maximum output current of 3A
• Maximum input voltage of 26V
• Voltage dropout specification of 0.6V @ 3A
• TO-263-5 package configuration
• Operating temperature range of -40°C to 125°C
• Identical protection feature set (Over Current, Over Temperature, Reverse Polarity, Transient Voltage)
• Enable control feature
• Surface mount technology

The MIC29301-12WU-TR meets all these criteria and qualifies as a direct substitute. The primary distinction between these parts is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MIC29301-12WU-TR is the appropriate substitute for the obsolete MIC29301-12BU TR. Both parts share identical electrical specifications and package configurations, ensuring functional equivalence in circuit applications.

The MIC29301-12WU-TR offers the advantage of active product status, ensuring continued availability and manufacturing support. Additionally, the MIC29301-12WU-TR carries ROHS3 compliance certification, whereas the MIC29301-12BU TR is non-compliant. For applications subject to RoHS regulatory requirements, the MIC29301-12WU-TR is the mandated selection.

Both parts maintain REACH Unaffected status and EAR99 export classification. Moisture sensitivity level remains consistent at MSL 3 (168 Hours) for both variants.

Frequently Asked Questions (FAQ)

Q: Can the MIC29301-12WU-TR directly replace the MIC29301-12BU TR in existing designs?

A: Yes. The MIC29301-12WU-TR provides identical electrical performance and package configuration. No circuit modifications are required for substitution.

Q: What is the primary difference between these two parts?

A: The MIC29301-12BU TR is obsolete, while the MIC29301-12WU-TR maintains active product status. The MIC29301-12WU-TR also carries ROHS3 compliance certification.

Q: Are the pin configurations identical?

A: Yes. Both parts use the TO-263-5 package with 5 leads plus tab, ensuring identical PCB footprint compatibility.

Q: Does the substitute part maintain the same protection features?

A: Yes. The MIC29301-12WU-TR includes over-current, over-temperature, reverse polarity, and transient voltage protection identical to the main part.

Q: What is the moisture sensitivity level for both parts?

A: Both the MIC29301-12BU TR and MIC29301-12WU-TR carry MSL 3 rating with a 168-hour floor life specification.

Q: Are there any compliance differences between these parts?

A: The MIC29301-12WU-TR is ROHS3 compliant, while the MIC29301-12BU TR is RoHS non-compliant. Both maintain REACH Unaffected status.