BA17824FP-E2 Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The BA17824FP-E2 is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed for positive fixed 24V output applications with 1A current capacity. This Surface Mount device in TO-252-3 (DPAK) packaging is actively produced and widely used in power management circuits requiring stable 24V regulation from higher input voltages.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements allow for alternative manufacturers meeting equivalent electrical and mechanical specifications. The substitute parts listed maintain compatibility through matching output voltage, package type, and core regulatory functionality.

Key Parameters

Parameter	BA17824FP-E2
Manufacturer	Rohm Semiconductor
Output Voltage (Fixed)	24V
Output Current	1A
Input Voltage (Max)	33V
Voltage Dropout (Max)	2V @ 1A (Typ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab)
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the BA17824FP-E2 are qualified based on the following critical parameters:

Fixed output voltage of 24V
TO-252-3 DPAK package compatibility
Surface Mount technology
Active product status
ROHS3 compliance
Positive output configuration

The substitute parts (L78M24ABDT-TR, L78M24ACDT-TR, L78M24CDT-TR) from STMicroelectronics share identical output voltage regulation and package specifications. These parts maintain functional equivalence in 24V regulation applications, though with differences in output current capacity and operating temperature ranges as detailed in the parameter comparison table.

Parameter Comparison

Parameter	BA17824FP-E2	L78M24ABDT-TR	L78M24ACDT-TR	L78M24CDT-TR
Manufacturer	Rohm Semiconductor	STMicroelectronics	STMicroelectronics	STMicroelectronics
Output Voltage (Fixed)	24V	24V	24V	24V
Output Current	1A	500mA	500mA	500mA
Input Voltage (Max)	33V	40V	40V	40V
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 125°C	0°C ~ 125°C	0°C ~ 125°C
PSRR (120Hz)	58dB	50dB	50dB	50dB
Protection Features	None specified	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature, Short Circuit
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements equivalent to the BA17824FP-E2. Selection between substitute options depends on application-specific current requirements and operating temperature constraints.

For applications requiring the full 1A output current of the BA17824FP-E2, substitute parts are limited to 500mA output capacity. This represents a significant functional difference and requires circuit-level evaluation to determine suitability.

The L78M24ABDT-TR extends the lower operating temperature limit to -40°C, matching the BA17824FP-E2 specification. The L78M24ACDT-TR and L78M24CDT-TR operate from 0°C minimum, which may restrict use in cold environment applications.

All substitute parts provide enhanced protection features (Over Current, Over Temperature, Short Circuit) not specified for the BA17824FP-E2, offering additional circuit safeguards in power management applications.

Frequently Asked Questions (FAQ)

Q: Can L78M24 series parts directly replace the BA17824FP-E2 in all applications?

A: Direct replacement is limited by output current capacity. The BA17824FP-E2 delivers 1A, while L78M24 substitutes deliver 500mA. Applications drawing less than 500mA at 24V output can use these substitutes. Applications requiring full 1A capacity require alternative solutions.

Q: What is the package compatibility between BA17824FP-E2 and L78M24 series?

A: All parts use identical TO-252-3 DPAK packaging with 2 Leads + Tab configuration. PCB footprints are directly compatible for Surface Mount assembly.

Q: Are there temperature range limitations when substituting?

A: The BA17824FP-E2 operates -40°C to 85°C. L78M24ABDT-TR matches the lower limit (-40°C) but extends to 125°C. L78M24ACDT-TR and L78M24CDT-TR operate 0°C to 125°C, restricting use below 0°C.

Q: Do substitute parts provide equivalent voltage regulation?

A: All parts maintain 24V fixed output voltage. The BA17824FP-E2 specifies 2V dropout at 1A. Substitute parts do not specify dropout voltage but share identical output voltage regulation topology.

Q: What protection features differ between the main part and substitutes?

A: The BA17824FP-E2 does not specify protection features. L78M24 series parts include Over Current, Over Temperature, and Short Circuit protection, providing enhanced circuit safeguards.

Q: Are all parts RoHS and REACH compliant?

A: Yes. BA17824FP-E2 and all L78M24 substitutes are ROHS3 Compliant and REACH Unaffected, meeting environmental regulatory requirements.

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