UA78L10ACLP Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The UA78L10ACLP is a linear voltage regulator IC from Texas Instruments designed for positive fixed 10V output applications with 100mA current capacity in a TO-92-3 through-hole package. This device operates across a 0°C to 125°C temperature range and includes integrated protection features for over-current, over-temperature, reverse polarity, and short-circuit conditions.

The UA78L10ACLP carries a Last Time Buy product status, indicating that Texas Instruments has discontinued this part. Identifying equivalent and substitute components is necessary to ensure design continuity and maintain supply chain reliability for applications currently using this regulator.

Substiute Parts

UA78L10ACLP

Texas InstrumentsIn Stock: 2519UA78L10ACLP Datasheet

Current PartRFQ

TPS7B8401QWDRBRQ1

Texas InstrumentsIn Stock: 5934TPS7B8401QWDRBRQ1 Datasheet

MFR RecommendedRFQ

UA78L10ACLPE3

Texas InstrumentsIn Stock: 4387UA78L10ACLPE3 Datasheet

Parametric EquivalentRFQ

UA78L10ACLP

Texas InstrumentsIn Stock: 2519UA78L10ACLP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UA78L10ACLP are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents maintain identical electrical specifications and package form factor, enabling direct replacement without circuit modification. These parts satisfy the core functional requirements: positive fixed 10V output, 100mA current capacity, through-hole TO-92-3 mounting, and equivalent protection features.

Functional Alternatives provide the required voltage regulation and current capacity but differ in output configuration (adjustable vs. fixed), package type (surface mount vs. through hole), or enhanced electrical performance. These parts require circuit design evaluation and are suitable for new designs or applications where package migration is acceptable.

The key parameters determining substitution eligibility are: output voltage (10V fixed requirement), output current (minimum 100mA), output configuration (positive), mounting type (through hole for direct replacement), and protection feature set (over-current, over-temperature, reverse polarity, short-circuit).

Parameter Comparison

Engineering Selection Recommendations

UA78L10ACLPE3 is the direct parametric equivalent for applications requiring immediate replacement of the UA78L10ACLP. This part maintains identical electrical specifications, through-hole TO-92-3 package configuration, and ROHS3 compliance. Both parts carry Last Time Buy status, indicating limited future availability. Selection of UA78L10ACLPE3 is appropriate for existing designs where no circuit modification is permissible and through-hole mounting is mandatory.

TPS7B8401QWDRBRQ1 is a functional alternative suitable for new designs or applications where package migration from through-hole to surface mount is acceptable. This part provides enhanced electrical performance including lower dropout voltage (0.245V vs. 1.7V), higher output current (150mA vs. 100mA), and extended operating temperature range (-40°C to 150°C). The TPS7B8401QWDRBRQ1 maintains Active product status and carries automotive-grade AEC-Q100 qualification. Circuit design modification is required to accommodate the adjustable output configuration and 8-SON surface-mount package. This part is recommended for new designs prioritizing performance and long-term availability.

Frequently Asked Questions (FAQ)

Q: Can UA78L10ACLPE3 be used as a direct replacement for UA78L10ACLP?

A: Yes. UA78L10ACLPE3 is a parametric equivalent with identical electrical specifications, fixed 10V output, 100mA current capacity, and TO-92-3 through-hole package. No circuit modification is required for direct substitution.

Q: Why is TPS7B8401QWDRBRQ1 listed as a substitute if it has an adjustable output?

A: TPS7B8401QWDRBRQ1 is classified as a functional alternative rather than a direct replacement. While it provides positive voltage regulation with higher current capacity and lower dropout voltage, the adjustable output configuration requires circuit design modification to set the output to 10V. This part is suitable for new designs or applications where design flexibility permits output voltage adjustment.

Q: What is the primary difference in package type between the main part and TPS7B8401QWDRBRQ1?

A: UA78L10ACLP uses a through-hole TO-92-3 package suitable for breadboard and through-hole PCB assembly. TPS7B8401QWDRBRQ1 uses an 8-SON surface-mount package requiring SMD assembly equipment and PCB design modifications. Through-hole mounting is not available for the TPS7B8401QWDRBRQ1.

Q: Are there RoHS compliance differences between these parts?

A: UA78L10ACLP and UA78L10ACLPE3 are both ROHS3 compliant. TPS7B8401QWDRBRQ1 carries "Not applicable" RoHS status. Verify RoHS requirements for your specific application before selecting TPS7B8401QWDRBRQ1.

Q: What is the product status significance for these parts?

A: UA78L10ACLP and UA78L10ACLPE3 both carry Last Time Buy status, indicating Texas Instruments has discontinued these parts and existing inventory is limited. TPS7B8401QWDRBRQ1 maintains Active status, ensuring continued availability and long-term supply chain reliability for new designs.

Q: Can TPS7B8401QWDRBRQ1 operate at the same input voltage as UA78L10ACLP?

A: TPS7B8401QWDRBRQ1 accepts higher maximum input voltage (40V vs. 25V). For applications operating within the 25V maximum input specification of UA78L10ACLP, TPS7B8401QWDRBRQ1 is compatible. The higher input voltage rating provides additional design margin.