MIC37301-3.3BR Equivalent & Substitute Parts Reference

Part Overview

The MIC37301-3.3BR from Microchip Technology is a Power Management Integrated Circuit (PMIC) categorized as a linear voltage regulator IC. It provides a positive fixed output of 3.3V and a maximum output current of 3A in a SPAK-5 surface-mount package, with integrated enable control and protection features including over current, over temperature, and reverse polarity. The part is designated as obsolete, making it necessary to identify alternative models with matching electrical, mechanical, and compliance parameters to ensure form, fit, and function continuity in existing designs.

Substiute Parts

MIC37301-3.3BR

Microchip TechnologyIn Stock: 2300MIC37301-3.3BR Datasheet

Current PartRFQ

MIC37301-3.3WR

Microchip TechnologyIn Stock: 13802MIC37301-3.3WR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is determined strictly by matching key parameters: positive output configuration, fixed 3.3V output voltage, 3A maximum output current, single regulator, a maximum input voltage of 6V, required protection features (over-current, over-temperature, reverse polarity), enable control, identical operating temperature range, surface mount mounting type, and package/case form (SPAK-5 5 Leads + Tab). Compliance requirements including RoHS status, MSL, and REACH status are also included in the substitute part selection.

Parameter Comparison

Engineering Selection Recommendations

The MIC37301-3.3BR is marked as obsolete and is RoHS non-compliant. The direct substitute, MIC37301-3.3WR, retains all equivalent functional and mechanical parameters and is ROHS3 compliant, active in production, and maintains the same MSL and REACH status. The package configuration is consistent between parts, ensuring compatibility for substitution focused on environmental compliance and lifecycle considerations.

Frequently Asked Questions (FAQ)

Q1: What are the essential criteria for substituting MIC37301-3.3BR?
A1: Substitution is based on matching output voltage (3.3V), output current (3A), input voltage (max 6V), single positive output configuration, the presence of enable and protection features, operating temperature range, surface mount SPAK-5 package, RoHS and REACH compliance, and MSL rating.

Q2: Are the package types of MIC37301-3.3BR and MIC37301-3.3WR equivalent?
A2: Both parts use the SPAK-5 (5 Leads + Tab) package, ensuring mechanical compatibility.

Q3: How does RoHS compliance differ between the original and substitute parts?
A3: MIC37301-3.3BR is RoHS non-compliant, while MIC37301-3.3WR is ROHS3 compliant, meeting current environmental standards.

Q4: Does the substitute part maintain the same functionality and protection features as the original?
A4: Yes, both parts provide enable functionality and protections for over current, over temperature, and reverse polarity.

Q5: Are there any changes in the number of regulators or output configuration?
A5: No, both parts feature one regulator with a positive, fixed output.

Q6: What is the moisture sensitivity level (MSL) for both parts?
A6: Both parts are rated at MSL 3 (168 Hours), indicating identical handling and storage requirements.