BH33MA3WHFV-TR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The BH33MA3WHFV-TR is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed to provide a fixed 3.3V output at 300mA. This positive fixed output regulator is actively produced and widely used in power management applications requiring low-dropout regulation with integrated protection features. Alternative equivalent and substitute parts may be required due to inventory constraints, supply chain considerations, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

BH33MA3WHFV-TR

Rohm SemiconductorIn Stock: 23768BH33MA3WHFV-TR Datasheet

Current PartRFQ

BH33M0AWHFV-TR

Rohm SemiconductorIn Stock: 1601BH33M0AWHFV-TR Datasheet

Parametric EquivalentRFQ

ADP122AUJZ-3.3-R7

Analog Devices Inc.In Stock: 27721ADP122AUJZ-3.3-R7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BH33MA3WHFV-TR are classified based on strict electrical and mechanical parameter matching:

Parametric Equivalent Classification: Parts that maintain identical or functionally equivalent specifications across all critical parameters including output voltage (3.3V fixed), output current (300mA), input voltage rating (5.5V max), dropout voltage performance, quiescent current, PSRR characteristics, protection features, and operating temperature range. These parts are direct functional replacements with the same package type (6-HVSOF).

Similar Substitute Classification: Parts that maintain the same output voltage (3.3V fixed) and output current (300mA) specifications but differ in package type, dropout voltage characteristics, quiescent current, PSRR frequency response, operating temperature range, or additional protection features. These parts require PCB layout modifications due to different package footprints and may have different thermal or performance characteristics.

Key Parameters Determining Substitution:

• Output Voltage: 3.3V (fixed)
• Output Current: 300mA
• Input Voltage Maximum: 5.5V
• Package Type: 6-HVSOF or compatible surface mount packages
• Protection Features: Over Current and Over Temperature minimum
• RoHS3 Compliance

Parameter Comparison

Engineering Selection Recommendations

BH33M0AWHFV-TR (Parametric Equivalent): This part is a direct functional equivalent to the BH33MA3WHFV-TR. Both parts are manufactured by Rohm Semiconductor, share identical electrical specifications, use the same 6-HVSOF package, and maintain the same operating temperature range. Both are ROHS3 compliant with MSL Level 1 rating. This substitute requires no PCB modifications and provides equivalent performance characteristics. Selection is appropriate when BH33MA3WHFV-TR availability is limited.

ADP122AUJZ-3.3-R7 (Similar Substitute): This part maintains the same output voltage (3.3V) and current (300mA) specifications but differs in package type (TSOT-23-5 versus 6-HVSOF), requiring PCB layout redesign. The ADP122AUJZ-3.3-R7 features a higher operating temperature range (-40°C ~ 125°C), additional Under Voltage Lockout (UVLO) protection, and slightly higher dropout voltage (0.15V @ 300mA) and quiescent current (105 µA). This substitute is suitable for applications where the TSOT-23-5 package is acceptable and the extended temperature range or additional UVLO protection provides system benefits. Both parts are ROHS3 compliant with MSL Level 1 rating.

Frequently Asked Questions (FAQ)

Q: Can BH33M0AWHFV-TR be used as a direct replacement for BH33MA3WHFV-TR without PCB modifications?

A: Yes. The BH33M0AWHFV-TR is a parametric equivalent with identical package type (6-HVSOF), electrical specifications, and performance characteristics. No PCB layout changes are required.

Q: What are the key differences between BH33MA3WHFV-TR and ADP122AUJZ-3.3-R7?

A: The primary differences are package type (6-HVSOF versus TSOT-23-5), dropout voltage (0.09V @ 100mA versus 0.15V @ 300mA), operating temperature range (-40°C ~ 85°C versus -40°C ~ 125°C), and additional UVLO protection in the ADP122AUJZ-3.3-R7. The ADP122AUJZ-3.3-R7 requires PCB redesign due to different package footprint.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both BH33M0AWHFV-TR and ADP122AUJZ-3.3-R7 are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the compliance status of the main part.

Q: Which substitute should be selected for applications requiring extended temperature operation?

A: The ADP122AUJZ-3.3-R7 supports operating temperatures up to 125°C, compared to 85°C for the BH33MA3WHFV-TR. Selection depends on application temperature requirements and acceptance of package type change and PCB modifications.

Q: Do the substitute parts maintain the same enable control feature?

A: Yes. Both BH33M0AWHFV-TR and ADP122AUJZ-3.3-R7 include Enable control features, maintaining functional compatibility with the main part's control interface.

Q: What is the impact of different dropout voltages on system design?

A: The BH33MA3WHFV-TR and BH33M0AWHFV-TR both specify 0.09V dropout at 100mA, while the ADP122AUJZ-3.3-R7 specifies 0.15V at 300mA. Lower dropout voltage reduces input voltage requirements and heat dissipation. Applications with tight input voltage margins should account for this difference when selecting the ADP122AUJZ-3.3-R7.