MIC2954-02BZ Equivalent & Substitute Parts Reference Guide

Part Overview

The MIC2954-02BZ, manufactured by Microchip Technology, is a positive fixed output linear voltage regulator IC in a TO-92-3 package, delivering 5V at 250mA output current. The device is categorized under Power Management ICs (PMIC) and provides essential protection features suitable for various regulated supply designs. This product’s status is listed as "Discontinued at Digi-Key," making the identification of direct substitute parts necessary for continued design use or replacement needs.

Key Parameters

Parameter	MIC2954-02BZ Value
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	30V
Voltage - Output (Min/Fixed)	5V
Voltage Dropout (Max)	0.6V @ 250mA
Current - Output	250mA
Operating Temperature	-40°C ~ 125°C
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package	TO-92-3
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for MIC2954-02BZ are selected strictly using the following key electrical and mechanical compatibility parameters:

Category: Power Management (PMIC)
Output Configuration: Positive
Output Type: Fixed
Number of Regulators: 1
Voltage - Input (Max): 30V
Voltage - Output (Min/Fixed): 5V
Mounting Type: Through Hole
Package / Case: TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package: TO-92-3

Current output, dropout voltage, operating temperature range, and RoHS/REACH compliance are included per applicability as specified.

Parameter Comparison

Parameter	MIC2954-02BZ	LP2950-50LPRE3	LT1121CZ-5#PBF	LT1121IZ-5#PBF
Manufacturer	Microchip Technology	Texas Instruments	Analog Devices Inc.	Linear Technology
Category	Power Management (PMIC)	Power Management (PMIC)	Power Management (PMIC)	Power Management (PMIC)
Output Configuration	Positive	Positive	Positive	Positive
Output Type	Fixed	Fixed	Fixed	Fixed
Number of Regulators	1	1	1	1
Voltage - Input (Max)	30V	30V	30V	30V
Voltage - Output (Min/Fixed)	5V	5V	5V	5V
Voltage Dropout (Max)	0.6V @ 250mA	0.6V @ 100mA	0.7V @ 150mA	0.7V @ 150mA
Current - Output	250mA	100mA	150mA	150mA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C (TJ)	0°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)	TO-226-3, TO-92-3 (TO-226AA) Formed Leads	TO-226-3, TO-92-3 (TO-226AA)	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package	TO-92-3	TO-92-3	TO-92-3	TO-92-3
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	Vendor Undefined

Engineering Selection Recommendations

Select a substitute based on current product status, compliance, and operating temperature specification. The MIC2954-02BZ is listed as discontinued; all three substitutes are active and available in the supply chain. LP2950-50LPRE3 and LT1121CZ-5#PBF are RoHS compliant, whereas MIC2954-02BZ is not. For applications with RoHS requirements, prefer RoHS-compliant alternatives. All substitutes utilize the same package/case and mounting type. Confirm compatibility with application requirements for output current and operating temperature as listed.

Frequently Asked Questions (FAQ)

Q: What are the main criteria for selecting substitute parts for MIC2954-02BZ?
A: Substitute parts are selected strictly using output configuration (positive), fixed output voltage (5V), maximum input voltage (30V), through hole TO-92-3 package, number of regulators (1), and current compliance with RoHS status as provided.

Q: Are the substitute parts directly compatible in terms of package and pinout?
A: All substitutes are specified as TO-226-3, TO-92-3 (TO-226AA), and TO-92-3 supplier device package, supporting direct mechanical replacement.

Q: How does the output current specification impact substitution?
A: Substitute parts should be chosen according to required current. LP2950-50LPRE3 provides up to 100mA, LT1121CZ-5#PBF and LT1121IZ-5#PBF provide up to 150mA, compared to 250mA for MIC2954-02BZ.

Q: Is RoHS compliance improved with the suggested substitutes?
A: Yes. LP2950-50LPRE3 and LT1121CZ-5#PBF are identified as RoHS compliant. MIC2954-02BZ is non-compliant.

Q: Are the listed substitutes active and available?
A: All substitutes have “Product Status: Active” according to provided data.

Q: What operating temperature ranges are supported across options?
A: Operating temperature range for substitutes varies from 0°C ~ 125°C to -40°C ~ 125°C as specified. Confirm application requirements match substitute ranges.

Q: Which other substitute parts are grouped for the MIC2954-02BZ?
A: LP2950-50LPRE3, LT1121CZ-5#PBF, and LT1121IZ-5#PBF are listed as grouped equivalents based strictly on provided parameters.

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