BA12ST Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The BA12ST is an active linear voltage regulator IC manufactured by Rohm Semiconductor, classified as a Power Management (PMIC) component. This positive fixed output regulator delivers 1A at 12V and is packaged in TO-220-5 configuration for through-hole mounting applications. The part is actively produced and stocked with 53,050 units available. Finding equivalent substitute parts is necessary to ensure supply chain continuity, optimize procurement costs, and maintain design flexibility across manufacturing batches and supplier availability windows.

Substiute Parts

BA12ST

Rohm SemiconductorIn Stock: 53083BA12ST Datasheet

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BAJ2CC0WT

Rohm SemiconductorIn Stock: 1632BAJ2CC0WT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BA12ST is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 12V fixed
• Output current capability: 1A minimum
• Input voltage tolerance: 25V maximum
• Quiescent current: 2.5 mA
• PSRR performance: 55dB (120Hz)
• Protection features: Over Current, Over Temperature, Over Voltage
• Mounting configuration: Through Hole, TO-220-5 package
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected

The BAJ2CC0WT qualifies as a direct substitute based on matching all critical electrical parameters and package specifications. Both parts are manufactured by Rohm Semiconductor and maintain identical functional performance within their respective operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

Both BA12ST and BAJ2CC0WT are active production parts with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. The BAJ2CC0WT offers an extended operating temperature range of -40°C to 125°C compared to the BA12ST's -40°C to 85°C specification. Selection between these parts should be based on the specific thermal environment of the application. For applications operating within the -40°C to 85°C window, either part provides equivalent performance. For applications requiring operation above 85°C, the BAJ2CC0WT is the appropriate selection. Both parts maintain identical electrical performance characteristics and package compatibility.

Frequently Asked Questions (FAQ)

Q: Can BAJ2CC0WT replace BA12ST in existing designs?

A: Yes. Both parts deliver identical 12V, 1A output with matching electrical specifications, protection features, and TO-220-5 package configuration. The primary difference is the extended operating temperature range of BAJ2CC0WT. Designs operating within BA12ST's temperature specification (-40°C to 85°C) experience no functional difference.

Q: What is the key difference between BA12ST and BAJ2CC0WT?

A: The operating temperature range differs. BA12ST operates from -40°C to 85°C, while BAJ2CC0WT extends to 125°C. All other electrical and mechanical parameters are identical.

Q: Are both parts available in the same packaging?

A: Yes. Both parts use TO-220-5 Full Pack configuration for through-hole mounting. BA12ST is supplied in standard packaging, while BAJ2CC0WT is supplied in tube packaging. The component itself and PCB footprint are identical.

Q: Which part should I specify for high-temperature applications?

A: Specify BAJ2CC0WT for applications where ambient or operating temperature may exceed 85°C. This part's 125°C maximum operating temperature provides thermal margin for such environments.

Q: Do both parts meet current compliance standards?

A: Yes. Both BA12ST and BAJ2CC0WT are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.