BA33B00FP-E2 Equivalent & Substitute Parts

Part Overview

The BA33B00FP-E2 is a linear voltage regulator IC from Rohm Semiconductor designed for positive adjustable (fixed) output applications. This dual-output regulator delivers 1A and 500mA outputs in a TO-252-3 (DPAK) surface mount package. The device is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent substitute parts is necessary for ongoing production support, maintenance applications, and legacy system repairs where this component remains in use.

Key Parameters

Parameter	BA33B00FP-E2
Manufacturer	Rohm Semiconductor
Category	Power Management (PMIC)
Package Type	TO-252-3, DPAK (2 Leads + Tab)
Output Configuration	Positive, Adjustable (Fixed)
Number of Regulators	2
Voltage - Input (Max)	16V
Voltage - Output (Min/Fixed)	1.267V (3.3V)
Voltage - Output (Max)	5V
Current - Output	1A, 500mA
Voltage Dropout (Max)	0.5V @ 500mA, 0.5V @ 200mA
Operating Temperature	-40°C ~ 85°C
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution eligibility for the BA33B00FP-E2 is determined by the following critical parameters:

Output Configuration & Type: Positive adjustable (fixed) output with dual regulators
Current Delivery: Minimum 1A primary output capability
Voltage Range: Input maximum ≥16V; output range covering 1.267V to 5V
Dropout Voltage: Low dropout performance ≤0.5V at rated currents
Package Compatibility: Surface mount with thermal management capability
Regulatory Compliance: ROHS3 compliance and EAR99 classification

The ST2L05R3300PS qualifies as a functional substitute based on matching output configuration, dual-regulator topology, positive adjustable output type, and regulatory compliance. However, differences in package form factor, input voltage rating, dropout characteristics, and operating temperature range require engineering evaluation for specific applications.

Parameter Comparison

Parameter	BA33B00FP-E2	ST2L05R3300PS
Manufacturer	Rohm Semiconductor	STMicroelectronics
Output Configuration	Positive	Positive
Output Type	Adjustable (Fixed)	Adjustable (Fixed)
Number of Regulators	2	2
Voltage - Input (Max)	16V	7V
Voltage - Output (Min/Fixed)	1.267V (3.3V)	1.25V (3.3V)
Voltage - Output (Max)	5V	5.7V
Current - Output	1A, 500mA	1A, 1A
Voltage Dropout (Max)	0.5V @ 500mA, 0.5V @ 200mA	1.3V @ 1A, 1.3V @ 1A
Operating Temperature	-40°C ~ 85°C	0°C ~ 125°C
Package / Case	TO-252-3, DPAK	8-VDFN Exposed Pad
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active

Engineering Selection Recommendations

The ST2L05R3300PS is an active product from STMicroelectronics and represents a viable substitute for legacy BA33B00FP-E2 applications where the following conditions are met:

Compatibility Factors:

Both devices provide dual positive adjustable (fixed) output regulators with matching output voltage ranges (1.25V–5.7V overlap)
Both include over-current and over-temperature protection
Both maintain ROHS3 compliance and EAR99 classification

Critical Differences Requiring Application Review:

Input voltage rating: ST2L05R3300PS maximum 7V versus BA33B00FP-E2 maximum 16V. Applications requiring input voltages above 7V cannot use the ST2L05R3300PS
Dropout voltage: ST2L05R3300PS exhibits 1.3V dropout at 1A versus BA33B00FP-E2 at 0.5V. Low-dropout applications may require additional design consideration
Package form factor: TO-252-3 (DPAK) versus 8-VDFN. PCB layout and thermal management strategies differ between packages
Operating temperature: ST2L05R3300PS supports 0°C to 125°C versus BA33B00FP-E2 at -40°C to 85°C. Cold-temperature applications below 0°C require the original part

The ST2L05R3300PS is recommended for applications where input voltage does not exceed 7V, dropout voltage performance is acceptable, and operating temperature remains within 0°C to 125°C.

Frequently Asked Questions (FAQ)

Q: Can the ST2L05R3300PS directly replace the BA33B00FP-E2 in all applications?

A: No. The ST2L05R3300PS has a lower maximum input voltage rating (7V versus 16V) and higher dropout voltage (1.3V versus 0.5V). Applications must operate within these constraints. Additionally, the package form factor differs, requiring PCB layout modifications.

Q: What is the primary reason for seeking a substitute for BA33B00FP-E2?

A: The BA33B00FP-E2 is classified as "Not For New Designs," indicating end-of-life status. Substitutes are necessary for production continuity, field repairs, and legacy system support where this component is currently deployed.

Q: Are both parts RoHS compliant?

A: Yes. Both BA33B00FP-E2 and ST2L05R3300PS are ROHS3 compliant and carry EAR99 classification, meeting regulatory requirements for commercial and industrial applications.

Q: How do the output current capabilities compare?

A: BA33B00FP-E2 provides 1A and 500mA dual outputs. ST2L05R3300PS provides 1A and 1A dual outputs. The ST2L05R3300PS offers equal or higher current capability on both channels.

Q: What package considerations apply to substitution?

A: BA33B00FP-E2 uses TO-252-3 (DPAK) with 2 leads plus tab. ST2L05R3300PS uses 8-VDFN with exposed pad. These are different form factors requiring PCB redesign, different footprints, and potentially different thermal management approaches.

Q: Can the ST2L05R3300PS operate at -40°C like the original part?

A: No. ST2L05R3300PS operates from 0°C to 125°C. Applications requiring operation below 0°C must use the BA33B00FP-E2 or identify an alternative substitute with extended low-temperature range.

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