BA10T Linear Voltage Regulator IC - Equivalent & Substitute Parts

Part Overview

The BA10T is a linear voltage regulator IC manufactured by Rohm Semiconductor, designed for positive fixed 10V output at 1A current capacity in a TO-220-3 package. This device provides regulated power supply functionality with integrated protection features including over-current, over-temperature, and over-voltage protection.

The BA10T carries a "Not For New Designs" product status, indicating it is a legacy component. For new circuit designs or when stock availability becomes critical, equivalent substitute parts with active product status are available that maintain electrical and mechanical compatibility while offering enhanced performance characteristics and extended support lifecycles.

Substiute Parts

BA10T

Rohm SemiconductorIn Stock: 1804BA10T Datasheet

Current PartRFQ

LM2940T-10.0/NOPB

Texas InstrumentsIn Stock: 2234LM2940T-10.0/NOPB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BA10T is determined by the following critical parameters:

• Output Voltage: Must be fixed at 10V
• Output Current Rating: Must be rated for 1A minimum
• Package Type: Must be TO-220-3 (mechanical and thermal compatibility)
• Mounting Type: Must be Through Hole
• Output Configuration: Must be Positive
• Number of Regulators: Must be single regulator (1 output)
• Regulatory Compliance: Must maintain ROHS3 compliance

The LM2940T-10.0/NOPB manufactured by Texas Instruments meets all substitution criteria. Both devices share identical output voltage and current specifications, use the same TO-220-3 package, and maintain equivalent regulatory compliance status. The substitute part offers enhanced specifications in several areas while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs Using BA10T: The LM2940T-10.0/NOPB is a direct substitute. Both devices are ROHS3 compliant and share identical electrical output specifications (10V, 1A) and mechanical packaging (TO-220-3). Pin-for-pin compatibility is maintained, allowing direct PCB replacement without circuit modification.

For New Designs: The LM2940T-10.0/NOPB is the recommended choice due to its Active product status, extended operating temperature range (-40°C to 125°C versus -85°C), and enhanced protection features including reverse polarity and short-circuit protection. The wider input voltage tolerance (26V maximum) provides additional design margin.

Inventory and Supply Considerations: Both parts maintain substantial stock levels. The BA10T has 1700 units available in bulk packaging, while the LM2940T-10.0/NOPB has 2154 units available in tube packaging. For long-term production programs, the Active status of the Texas Instruments part ensures continued availability and support.

Frequently Asked Questions (FAQ)

Q: Can the LM2940T-10.0/NOPB replace the BA10T in existing circuits? A: Yes. Both devices provide identical 10V fixed output at 1A in TO-220-3 packages with through-hole mounting. Pin configuration and electrical characteristics are compatible for direct substitution.

Q: What is the difference in quiescent current between these parts? A: The BA10T draws 2.5 mA quiescent current while the LM2940T-10.0/NOPB draws 10 mA. For battery-powered or low-power standby applications, the BA10T offers superior efficiency. For standard line-powered applications, this difference is negligible.

Q: Why does the BA10T have "Not For New Designs" status? A: This designation indicates the part is in mature/legacy phase. Rohm Semiconductor continues to support existing designs but does not recommend it for new development. The LM2940T-10.0/NOPB with Active status is the forward-compatible choice.

Q: Are there package differences between these regulators? A: Both use TO-220-3 packages with identical pin assignments and thermal characteristics. No PCB layout modifications are required for substitution.

Q: What additional protections does the LM2940T-10.0/NOPB provide? A: The Texas Instruments part includes reverse polarity and short-circuit protection in addition to the over-current, over-temperature, and over-voltage protection found in the BA10T.

Q: Is the operating temperature range difference significant? A: The LM2940T-10.0/NOPB operates to 125°C versus 85°C for the BA10T. For applications requiring extended high-temperature operation or thermal margin, the Texas Instruments part is superior. For standard industrial applications (-40°C to 85°C), both are equivalent.