BA17824T Linear Voltage Regulator - Equivalent & Substitute Parts

Part Overview

The BA17824T is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed to deliver a fixed positive 24V output at 1A current capacity in a TO-220-3 through-hole package. This device functions as a positive fixed output regulator with a maximum input voltage of 33V and typical dropout voltage of 2V at 1A load.

The BA17824T carries a "Not For New Designs" product status, indicating that Rohm Semiconductor has discontinued active development and support for this component. Organizations requiring this functionality for new or ongoing production must identify equivalent substitute parts that maintain electrical and mechanical compatibility while offering active manufacturer support and current availability.

Key Parameters

Parameter	Value	Unit
Output Voltage (Fixed)	24V	V
Output Current	1A	A
Input Voltage (Maximum)	33V	V
Voltage Dropout (Typical @ 1A)	2V	V
Output Configuration	Positive Fixed	—
Package Type	TO-220-3	—
Mounting Type	Through Hole	—
Operating Temperature Range	-40°C to 85°C	°C
RoHS Compliance	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the BA17824T is determined by strict alignment of the following critical parameters:

Fixed output voltage of 24V
Output current rating of 1A minimum
Positive output configuration
TO-220-3 package footprint and through-hole mounting compatibility
Maximum input voltage rating of 33V or greater
Dropout voltage of 2V or less at 1A load
RoHS3 compliance status

The MC7824BTG manufactured by onsemi meets all substitution criteria. Both devices deliver identical output voltage and current specifications, share the same TO-220-3 package footprint, and maintain RoHS3 compliance. The MC7824BTG provides enhanced specifications including higher maximum input voltage (40V versus 33V) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), making it a direct functional replacement.

Parameter Comparison

Parameter	BA17824T (Rohm)	MC7824BTG (onsemi)	Unit
Manufacturer	Rohm Semiconductor	onsemi	—
Output Voltage (Fixed)	24V	24V	V
Output Current	1A	1A	A
Input Voltage (Maximum)	33V	40V	V
Voltage Dropout (Typical @ 1A)	2V	2V	V
Quiescent Current	4.5 mA	8 mA	mA
PSRR (120Hz)	58 dB	61 dB	dB
Operating Temperature Range	-40°C to 85°C	-40°C to 125°C	°C
Package Type	TO-220-3	TO-220-3	—
Protection Features	None specified	Over Temperature, Short Circuit	—
Product Status	Not For New Designs	Active	—
RoHS Compliance	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

The MC7824BTG is the qualified substitute for BA17824T applications. Selection rationale is based on the following factors:

Product Status: The BA17824T is designated "Not For New Designs" by Rohm Semiconductor, indicating end-of-life status. The MC7824BTG maintains "Active" product status from onsemi, ensuring ongoing manufacturer support, documentation updates, and supply chain availability.

Compliance & Certification: Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component substitution in regulated industries.

Electrical Compatibility: The MC7824BTG delivers identical core specifications—24V fixed output, 1A current capacity, and 2V typical dropout voltage—ensuring functional equivalence in existing circuit designs without modification.

Enhanced Specifications: The MC7824BTG provides superior performance margins with 40V maximum input voltage (versus 33V) and extended operating temperature range to 125°C (versus 85°C), offering improved reliability in demanding thermal environments.

Package Compatibility: Both devices use TO-220-3 through-hole packaging, enabling direct PCB footprint compatibility and mechanical interchangeability without layout redesign.

Frequently Asked Questions (FAQ)

Q: Can MC7824BTG replace BA17824T in existing designs without PCB modification?

A: Yes. Both devices share identical TO-220-3 package geometry and pin configuration, enabling direct mechanical and electrical substitution without PCB layout changes.

Q: What is the primary reason for substituting BA17824T?

A: The BA17824T carries "Not For New Designs" status, indicating Rohm Semiconductor has discontinued active support. The MC7824BTG provides equivalent functionality with active manufacturer status and ongoing availability.

Q: Are there electrical performance differences between these devices?

A: Core output specifications are identical. The MC7824BTG exhibits slightly higher quiescent current (8 mA versus 4.5 mA) and improved PSRR (61 dB versus 58 dB). The MC7824BTG also includes integrated over-temperature and short-circuit protection, whereas the BA17824T does not specify protection features.

Q: Do both devices meet the same compliance standards?

A: Yes. Both BA17824T and MC7824BTG are ROHS3 compliant and REACH unaffected, satisfying equivalent regulatory requirements.

Q: What is the maximum input voltage difference, and does it affect circuit design?

A: The MC7824BTG supports 40V maximum input versus 33V for BA17824T. This provides additional design margin but does not require circuit modification if the original design operated within 33V limits.

Q: Is the extended temperature range of MC7824BTG (-40°C to 125°C) significant for substitution?

A: The extended range provides improved reliability in high-temperature applications. If the original design operated within -40°C to 85°C, both devices are functionally equivalent. Applications requiring operation above 85°C benefit from the MC7824BTG's extended range.

Q: Are packaging options different between these devices?

A: The BA17824T is supplied in bulk packaging, while MC7824BTG is supplied in tube packaging. Both use identical TO-220-3 component packages suitable for through-hole PCB assembly.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message