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

Part Overview

The TCR3DM33,LF(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 output current at a fixed 3.3V output voltage. The part is currently in active product status and is supplied in Tape & Reel packaging.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or manufacturing transitions. The substitutes listed maintain electrical and mechanical compatibility within the specified parameter ranges for this LDO regulator category.

Substiute Parts

TCR3DM33,LF(SE

Toshiba Semiconductor and StorageIn Stock: 9613TCR3DM33,LF(SE Datasheet

Current PartRFQ

TCR3DM33,RF(SE

Toshiba Semiconductor and StorageIn Stock: 8426TCR3DM33,RF(SE Datasheet

Parametric EquivalentRFQ

BU33UA3WNVX-TL

Rohm SemiconductorIn Stock: 17367BU33UA3WNVX-TL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TCR3DM33,LF(SE are identified based on strict electrical and mechanical parameter matching within the linear voltage regulator category. The substitution logic is based on the following critical parameters:

Electrical Compatibility Criteria:

• Output Configuration: Positive
• Output Type: Fixed
• Voltage - Output (Min/Fixed): 3.3V
• Voltage - Input (Max): 5.5V
• Current - Output: 300mA
• Operating Temperature Range: -40°C to 85°C
• Protection Features: Over Current, Over Temperature

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package / Case: 4-UDFN Exposed Pad
• Control Features: Enable

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Parts are grouped as substitutes when all critical electrical parameters, mechanical package specifications, and compliance certifications align with the main part number. Voltage dropout characteristics and quiescent current specifications are secondary differentiators within compatible groups.

Parameter Comparison

Engineering Selection Recommendations

TCR3DM33,RF(SE (Toshiba Semiconductor and Storage)

The TCR3DM33,RF(SE is a parametric equivalent to the TCR3DM33,LF(SE, differing only in packaging designation (RF versus LF suffix). Both parts are manufactured by Toshiba Semiconductor and Storage and maintain identical electrical specifications, output voltage, current rating, and thermal characteristics. Both parts carry Active product status and are ROHS3 compliant with MSL 1 rating. This substitute is suitable for direct replacement in applications where the TCR3DM33,LF(SE is specified.

BU33UA3WNVX-TL (Rohm Semiconductor)

The BU33UA3WNVX-TL is a cross-manufacturer substitute manufactured by Rohm Semiconductor. This part meets all critical electrical parameters: 3.3V fixed output, 300mA output current, 5.5V maximum input voltage, and -40°C to 85°C operating temperature range. The device includes identical protection features (Over Current, Over Temperature) and Enable control functionality. The BU33UA3WNVX-TL demonstrates a marginally lower voltage dropout specification (0.22V @ 300mA versus 0.23V) and provides additional performance data including 90 µA quiescent current and 70dB PSRR at 1kHz. However, this part carries a "Not For New Designs" product status designation. The BU33UA3WNVX-TL is suitable for replacement in existing designs or legacy applications where inventory of the primary Toshiba part is unavailable.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts are manufactured by Toshiba Semiconductor and Storage and share identical electrical specifications, output voltage (3.3V), output current (300mA), input voltage rating (5.5V maximum), operating temperature range (-40°C to 85°C), and package configuration (4-UDFN Exposed Pad). The RF and LF designations indicate packaging tape format variations only. Both parts are Active status and ROHS3 compliant.

Q: What is the difference between the Toshiba TCR3DM33 variants and the Rohm BU33UA3WNVX-TL?

A: The primary differences are manufacturer and product status. The Toshiba TCR3DM33,LF(SE and TCR3DM33,RF(SE are Active products, while the Rohm BU33UA3WNVX-TL is designated "Not For New Designs." Electrically, all three parts deliver 3.3V at 300mA with identical input voltage ratings and operating temperature ranges. The BU33UA3WNVX-TL offers slightly lower dropout voltage (0.22V versus 0.23V) and includes published quiescent current (90 µA) and PSRR (70dB @ 1kHz) specifications.

Q: Are all three parts compatible with the same PCB layout?

A: Yes. All three parts use the 4-UDFN Exposed Pad package configuration with identical mechanical dimensions. The supplier device packages differ in designation (4-DFN (1x1) for Toshiba parts, SSON004X1010 for Rohm), but these represent the same physical package footprint. PCB layouts designed for one part accommodate all three substitutes without modification.

Q: Which substitute should be selected for new product designs?

A: For new product designs, select either TCR3DM33,LF(SE or TCR3DM33,RF(SE, as both carry Active product status. The BU33UA3WNVX-TL is designated "Not For New Designs" and should be reserved for replacement or legacy application scenarios only.

Q: Do all three parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and are REACH Unaffected. All parts are classified under ECCN EAR99 and HTSUS 8542.39.0001.

Q: What is the significance of the voltage dropout specification difference?

A: The BU33UA3WNVX-TL specifies 0.22V dropout at 300mA, compared to 0.23V for the Toshiba parts. This 0.01V difference is negligible in most applications. Dropout voltage determines the minimum input voltage required to maintain regulated output. In systems with tight input voltage margins, the lower dropout of the Rohm part provides marginal advantage, but this difference does not affect functional compatibility.

Q: Can these parts be used interchangeably in existing production?

A: Yes, within the constraints of product status. The TCR3DM33,RF(SE can replace TCR3DM33,LF(SE in existing production without qualification changes. The BU33UA3WNVX-TL can be used as a substitute in existing designs when primary parts are unavailable, provided the design has been previously qualified with this part or equivalent cross-manufacturer substitutes.