TCR3RM10A,LF Linear Voltage Regulator IC

Part Overview

The TCR3RM10A,LF is a linear voltage regulator IC manufactured by Toshiba Semiconductor and Storage, classified as a Power Management (PMIC) component. This device is a positive fixed output regulator delivering 1V at 300mA output current in a 4-DFNC surface mount package. The part is currently listed with obsolete product status, making identification of equivalent and substitute parts essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Manufacturer	Toshiba Semiconductor and Storage
Series	TCR3RM
Output Configuration	Positive
Output Type	Fixed
Voltage - Output (Min/Fixed)	1V
Current - Output	300mA
Voltage - Input (Max)	5.5V
Voltage Dropout (Max)	0.13V @ 300mA
Package / Case	4-XDFN Exposed Pad
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the obsolete TCR3RM10A,LF is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Output voltage: 1V fixed
Output current capability: 300mA
Input voltage maximum: 5.5V
Output configuration: Positive
Protection features: Over Current and Over Temperature

Mechanical Equivalence Criteria:

Package type: 4-XDFN Exposed Pad (4-DFNC)
Mounting type: Surface Mount
Footprint compatibility: 1x1mm

Compliance Criteria:

RoHS3 compliance
MSL rating: 1 (Unlimited)

The substitute part TCR3RM10A,LF(SE shares identical electrical specifications, mechanical packaging, and compliance certifications with the main part, differing only in packaging format (Tape & Reel versus Cut Tape) and product status (Active versus Obsolete).

Parameter Comparison

Parameter	TCR3RM10A,LF (Main Part)	TCR3RM10A,LF(SE (Substitute)
Manufacturer	Toshiba Semiconductor and Storage	Toshiba Semiconductor and Storage
Series	TCR3RM	TCR3RM
Product Status	Obsolete	Active
Output Configuration	Positive	Positive
Output Type	Fixed	Fixed
Voltage - Output (Min/Fixed)	1V	1V
Current - Output	300mA	300mA
Voltage - Input (Max)	5.5V	5.5V
Voltage Dropout (Max)	0.13V @ 300mA	Not specified
Package / Case	4-XDFN Exposed Pad	4-XDFN Exposed Pad
Supplier Device Package	4-DFNC (1x1)	4-DFNC (1x1)
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 85°C
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Packaging Format	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)

Engineering Selection Recommendations

The TCR3RM10A,LF(SE is a direct functional equivalent to the obsolete TCR3RM10A,LF. Both parts are manufactured by Toshiba Semiconductor and Storage within the same TCR3RM series and share identical electrical specifications, mechanical packaging, and regulatory compliance certifications.

The primary distinction between the two parts is product status and packaging format. The main part (TCR3RM10A,LF) is obsolete and supplied in Cut Tape format, while the substitute (TCR3RM10A,LF(SE) is active production and supplied in Tape & Reel format. The substitute part maintains full compatibility with existing PCB designs and assembly processes, as both utilize the identical 4-XDFN Exposed Pad package footprint.

For new designs or production continuity, the TCR3RM10A,LF(SE is the appropriate selection due to its active product status and assured long-term availability. Both parts satisfy ROHS3 compliance requirements and carry MSL rating 1, indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can TCR3RM10A,LF(SE be used as a direct replacement for TCR3RM10A,LF in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical output voltage (1V), output current (300mA), input voltage rating (5.5V maximum), package type (4-XDFN Exposed Pad), and operating temperature range (-40°C to 85°C). PCB footprints and assembly processes require no modification.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging supplies individual components on tape segments, typically for lower-volume or prototype applications. Tape & Reel (TR) packaging supplies components on continuous reel format, optimized for high-volume automated assembly. Both formats use identical component specifications and package dimensions; the difference is in supply format and handling method.

Q: Why is the main part listed as obsolete?

A: Product obsolescence indicates that the manufacturer has discontinued production of the TCR3RM10A,LF in Cut Tape format. The TCR3RM10A,LF(SE remains in active production, ensuring continued availability and supply chain reliability.

Q: Are there any electrical performance differences between the two parts?

A: Both parts deliver identical electrical performance: 1V fixed output, 300mA output current, 5.5V maximum input voltage, and -40°C to 85°C operating temperature range. Both include Over Current and Over Temperature protection features. The main part specifies 0.13V maximum dropout voltage at 300mA; the substitute part does not provide this specification in the available data.

Q: Do both parts meet the same compliance standards?

A: Yes. Both TCR3RM10A,LF and TCR3RM10A,LF(SE are ROHS3 compliant and carry MSL rating 1 (Unlimited moisture sensitivity level), indicating identical regulatory compliance and storage requirements.

Q: What is the significance of the 4-DFNC package designation?

A: The 4-DFNC designation indicates a 4-pin Dual Flat No-Lead package with exposed pad, measuring 1x1mm. This is a surface mount package suitable for automated assembly on standard PCB equipment. Both parts use this identical package type, ensuring mechanical and thermal compatibility.

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