UA78L02ACLP Equivalent & Substitute Parts

Part Overview

The UA78L02ACLP is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. This through-hole TO-92-3 package device delivers 100mA output current with a fixed 2.6V output and 20V maximum input voltage. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitutes must maintain functional compatibility while accounting for packaging, performance, and availability differences.

Substiute Parts

UA78L02ACLP

Texas InstrumentsIn Stock: 1048UA78L02ACLP Datasheet

Current PartRFQ

TPS7A2430DBVR

Texas InstrumentsIn Stock: 16222TPS7A2430DBVR Datasheet

MFR RecommendedRFQ

UA78L02ACLP

Texas InstrumentsIn Stock: 1048UA78L02ACLP Datasheet

Parametric EquivalentRFQ

UA78L02ACLPE3

Texas InstrumentsIn Stock: 1158UA78L02ACLPE3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes for the UA78L02ACLP are categorized based on the following criteria:

Parametric Equivalents maintain identical electrical specifications and package type, enabling direct replacement without circuit modification:

• Fixed 2.6V output voltage
• 100mA output current capability
• TO-92-3 through-hole package
• Identical protection features and operating temperature range

Manufacturer Recommended Substitutes provide functional equivalence with performance enhancements but require package and board layout changes:

• Positive fixed output configuration
• Higher output current capability (200mA vs 100mA)
• Superior dropout voltage performance
• Surface mount SOT-23-5 package requiring PCB redesign

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No Circuit Modification): Select UA78L02ACLPE3 when existing through-hole TO-92-3 board layouts must be preserved. This parametric equivalent maintains identical electrical performance and package footprint. Both UA78L02ACLP and UA78L02ACLPE3 are obsolete; UA78L02ACLPE3 offers higher current inventory availability (1116 Pcs vs 995 Pcs).

For New Designs or Board Redesign: Select TPS7A2430DBVR when PCB layout modifications are feasible. This active product offers superior performance characteristics including lower dropout voltage (0.25V vs 1.7V), higher output current (200mA vs 100mA), extended operating temperature range (-40°C to 125°C), and significantly higher inventory availability (16200 Pcs). The surface mount SOT-23-5 package requires PCB redesign but provides modern manufacturing compatibility. Output voltage differs at 3V versus 2.6V; circuit validation is required if exact voltage matching is critical.

All substitutes maintain ROHS3 compliance and identical protection feature sets (Over Current, Over Temperature, Reverse Polarity, Short Circuit).

Frequently Asked Questions (FAQ)

Q: Can UA78L02ACLPE3 replace UA78L02ACLP directly on existing PCBs? A: Yes. UA78L02ACLPE3 is a parametric equivalent with identical electrical specifications, operating temperature range, and TO-92-3 through-hole package. No circuit modifications are required.

Q: What are the key differences between UA78L02ACLP and TPS7A2430DBVR? A: The primary differences are package type (through-hole TO-92-3 vs surface mount SOT-23-5), output current (100mA vs 200mA), dropout voltage (1.7V vs 0.25V), output voltage (2.6V vs 3V), and product status (obsolete vs active). TPS7A2430DBVR requires PCB redesign but offers superior performance and current availability.

Q: Is the 3V output of TPS7A2430DBVR compatible with circuits designed for 2.6V? A: Output voltage compatibility depends on circuit design specifications. A 0.4V difference may be acceptable for some applications but not others. Circuit validation is required before substitution.

Q: Why is TPS7A2430DBVR recommended despite different output voltage? A: TPS7A2430DBVR is the manufacturer-recommended substitute based on functional category and performance class. It is an active product with superior electrical characteristics and high inventory availability, making it suitable for new designs where output voltage can be accommodated.

Q: Can I use TPS7A2430DBVR as a drop-in replacement without PCB changes? A: No. TPS7A2430DBVR uses a surface mount SOT-23-5 package versus the through-hole TO-92-3 package of UA78L02ACLP. PCB layout redesign is required.

Q: What protection features are common across all three parts? A: All three parts include Over Current, Over Temperature, Reverse Polarity, and Short Circuit protection. TPS7A2430DBVR adds Under Voltage Lockout (UVLO) protection and includes an Enable control feature.