MIC29201-4.8BU Equivalent & Substitute Parts

Part Overview

The MIC29201-4.8BU is a linear voltage regulator IC from Microchip Technology designed for positive fixed output applications. This Surface Mount device delivers 400mA output current at a fixed 4.85V output voltage with a maximum input voltage of 26V and dropout voltage of 0.75V at full load. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and design continuity.

Substiute Parts

MIC29201-4.8BU

Microchip TechnologyIn Stock: 2002MIC29201-4.8BU Datasheet

Current PartRFQ

MIC29201-4.8WU

Microchip TechnologyIn Stock: 3429MIC29201-4.8WU Datasheet

DirectRFQ

MIC29201-4.8WU

Microchip TechnologyIn Stock: 3429MIC29201-4.8WU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MIC29201-4.8BU is determined by strict equivalence across the following critical parameters:

• Output voltage: 4.85V fixed
• Output current capability: 400mA
• Maximum input voltage: 26V
• Dropout voltage: 0.75V @ 400mA
• Package type: TO-263-5 (Surface Mount)
• Control and protection features: Enable function, Load Dump, Over Current, Reverse Polarity protection
• Operating temperature range: -40°C ~ 125°C

The MIC29201-4.8WU qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MIC29201-4.8WU is the direct equivalent for the obsolete MIC29201-4.8BU. Both parts share identical electrical characteristics, output specifications, and package configuration. The MIC29201-4.8WU is currently in active production status with higher inventory availability (3400 Pcs vs. 1900 Pcs).

A significant advantage of the MIC29201-4.8WU is its ROHS3 compliance status, compared to the non-compliant status of the MIC29201-4.8BU. This compliance improvement aligns with current regulatory requirements for electronic components in most markets. Both parts maintain equivalent REACH status and moisture sensitivity levels.

Frequently Asked Questions (FAQ)

Q: Are the MIC29201-4.8BU and MIC29201-4.8WU electrically interchangeable?

A: Yes. Both parts deliver identical output voltage (4.85V), output current (400mA), dropout voltage (0.75V @ 400mA), and protection features. They are pin-compatible in the TO-263-5 package configuration.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and compliance certification. The MIC29201-4.8BU is obsolete and RoHS non-compliant, while the MIC29201-4.8WU is active production and ROHS3 compliant. Electrical and mechanical specifications are identical.

Q: Can I use MIC29201-4.8WU as a direct replacement in existing designs?

A: Yes. The MIC29201-4.8WU is a direct substitute with no design modifications required. Pin configuration, package type, and electrical performance are identical to the MIC29201-4.8BU.

Q: Does the packaging differ between these parts?

A: Both parts use the same TO-263-5 package (D2PAK with 5 Leads + Tab). The MIC29201-4.8WU is supplied in Tube packaging, while the MIC29201-4.8BU packaging type was not specified in available data.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on matching output voltage (4.85V), output current (400mA), maximum input voltage (26V), dropout voltage (0.75V @ 400mA), package type (TO-263-5), control features (Enable), protection features (Load Dump, Over Current, Reverse Polarity), and operating temperature range (-40°C ~ 125°C).