TCR3DM33,RF(SE Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The TCR3DM33,RF(SE is a linear voltage regulator IC manufactured by Toshiba Semiconductor and Storage, classified as a Power Management (PMIC) component. This device functions as a positive fixed output regulator with a single output channel, delivering 300mA at 3.3V output voltage. The part is currently in active product status and is supplied in Tape & Reel packaging with 8,375 pieces available in stock.

Alternative equivalent parts are necessary when the primary TCR3DM33,RF(SE variant becomes unavailable, when design requirements mandate different packaging configurations, or when supply chain optimization requires sourcing from multiple manufacturers while maintaining identical electrical performance specifications.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	5.5V
Voltage - Output (Min/Fixed)	3.3V
Voltage Dropout (Max)	0.23V @ 300mA
Current - Output	300mA
Control Features	Enable
Protection Features	Over Current, Over Temperature
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	4-UDFN Exposed Pad
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TCR3DM33,RF(SE are qualified based on strict electrical and mechanical parameter alignment. The substitution criteria are defined by the following key parameters:

Electrical Equivalence Requirements:

Output Configuration: Positive
Output Type: Fixed
Number of Regulators: 1
Voltage - Output (Min/Fixed): 3.3V
Voltage - Input (Max): 5.5V
Current - Output: 300mA
Operating Temperature Range: -40°C ~ 85°C
Control Features: Enable
Protection Features: Over Current, Over Temperature

Mechanical Equivalence Requirements:

Mounting Type: Surface Mount
Package / Case: 4-UDFN Exposed Pad
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Parts meeting all electrical and mechanical criteria are classified as direct parametric equivalents. Voltage dropout performance may vary within acceptable tolerances. All substitute parts maintain identical functional output specifications and environmental compliance certifications.

Parameter Comparison

Parameter	TCR3DM33,RF(SE	TCR3DM33,LF(SE	BU33UA3WNVX-TL
Manufacturer	Toshiba Semiconductor and Storage	Toshiba Semiconductor and Storage	Rohm Semiconductor
Output Configuration	Positive	Positive	Positive
Output Type	Fixed	Fixed	Fixed
Number of Regulators	1	1	1
Voltage - Input (Max)	5.5V	5.5V	5.5V
Voltage - Output (Min/Fixed)	3.3V	3.3V	3.3V
Voltage Dropout (Max)	0.23V @ 300mA	0.23V @ 300mA	0.22V @ 300mA
Current - Output	300mA	300mA	300mA
Control Features	Enable	Enable	Enable
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-UDFN Exposed Pad	4-UDFN Exposed Pad	4-UDFN Exposed Pad
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Not For New Designs
Inventory (Pcs)	8,375	9,601	17,300

Engineering Selection Recommendations

TCR3DM33,LF(SE is a direct parametric equivalent to the TCR3DM33,RF(SE, manufactured by Toshiba Semiconductor and Storage. Both parts share identical electrical specifications, output voltage, current rating, dropout voltage, and operating temperature range. Both maintain active product status and ROHS3 compliance. The TCR3DM33,LF(SE variant offers higher inventory availability (9,601 pieces) and is suitable for new designs and production applications.

BU33UA3WNVX-TL is a parametric equivalent manufactured by Rohm Semiconductor. This part meets all electrical and mechanical substitution criteria with identical output voltage, current rating, and operating temperature specifications. The BU33UA3WNVX-TL demonstrates superior voltage dropout performance (0.22V @ 300mA versus 0.23V @ 300mA) and includes additional performance metrics (90 µA quiescent current, 70dB PSRR at 1kHz). However, this part carries a "Not For New Designs" product status designation. The BU33UA3WNVX-TL is available in higher inventory quantity (17,300 pieces) and is suitable for legacy system maintenance and existing design support only.

For new design implementations, TCR3DM33,LF(SE is the recommended selection. For existing production support or legacy system applications, BU33UA3WNVX-TL provides an alternative with enhanced performance characteristics and greater availability.

Frequently Asked Questions (FAQ)

Q: Can TCR3DM33,LF(SE be used as a direct replacement for TCR3DM33,RF(SE?

A: Yes. Both parts are manufactured by Toshiba Semiconductor and Storage and share identical electrical specifications, including 3.3V fixed output voltage, 300mA output current, 5.5V maximum input voltage, 0.23V maximum dropout voltage at 300mA, and -40°C to 85°C operating temperature range. Both are packaged in 4-UDFN Exposed Pad surface mount configuration and maintain ROHS3 compliance and MSL 1 rating. The parts are functionally interchangeable.

Q: What is the difference between TCR3DM33,RF(SE and TCR3DM33,LF(SE?

A: The primary difference is the packaging variant designation (RF versus LF). Both parts maintain identical electrical performance and mechanical specifications. The TCR3DM33,LF(SE variant has higher current inventory availability (9,601 pieces versus 8,375 pieces).

Q: Can BU33UA3WNVX-TL replace TCR3DM33,RF(SE in new designs?

A: BU33UA3WNVX-TL meets all electrical and mechanical substitution criteria and is a parametric equivalent. However, this part carries a "Not For New Designs" product status designation from Rohm Semiconductor. For new design implementations, TCR3DM33,LF(SE is the appropriate selection. BU33UA3WNVX-TL is suitable for legacy system maintenance and existing production support.

Q: Are all three parts pin-compatible?

A: Yes. All three parts utilize 4-UDFN Exposed Pad surface mount packaging with identical mechanical dimensions and pin configuration. Pin-level compatibility is confirmed across TCR3DM33,RF(SE, TCR3DM33,LF(SE, and BU33UA3WNVX-TL.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by: output voltage (3.3V fixed), output current (300mA), maximum input voltage (5.5V), maximum dropout voltage (0.23V @ 300mA or better), operating temperature range (-40°C to 85°C), enable control feature, and over current and over temperature protection. All substitute parts must meet these specifications.

Q: Does BU33UA3WNVX-TL offer performance advantages over the Toshiba variants?

A: BU33UA3WNVX-TL demonstrates lower voltage dropout (0.22V @ 300mA versus 0.23V @ 300mA) and includes specified quiescent current (90 µA) and PSRR performance (70dB at 1kHz). These parameters are not specified for the Toshiba variants. However, the "Not For New Designs" status limits its application to legacy system support.

Q: Are all three parts RoHS compliant?

A: Yes. TCR3DM33,RF(SE, TCR3DM33,LF(SE, and BU33UA3WNVX-TL are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All parts are REACH unaffected and classified under ECCN EAR99.

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