REG102NA-A/250 Equivalent & Substitute Parts

Part Overview

The REG102NA-A/250 is a linear voltage regulator IC from Texas Instruments designed for positive adjustable output applications. This Surface Mount device delivers 250mA output current in a compact SOT-23-5 package and operates across -40°C to 85°C. The part is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and ensuring component availability for production and maintenance cycles.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Adjustable
Current - Output	250mA
Voltage - Input (Max)	10V
Voltage - Output (Min/Fixed)	2.5V
Voltage - Output (Max)	5.5V
Voltage Dropout (Max)	0.27V @ 250mA
Package / Case	SC-74A, SOT-753
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 85°C
Product Status	Last Time Buy
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the REG102NA-A/250 are classified based on the following substitution criteria:

Parametric Equivalent (REG102NA-A/3K): Identical electrical specifications and package type. Differs only in packaging format (Tape & Reel variant). Substitution is direct for applications requiring the same electrical performance and mechanical fit.

Functional Upgrade (TPS7A2501DRVR): Enhanced specifications across multiple parameters including higher output current (300mA vs 250mA), wider input voltage range (18V vs 10V), lower quiescent current (4.5µA vs 500µA), and extended operating temperature range (-40°C to 125°C vs -40°C to 85°C). Different package format (6-WSON vs SOT-23-5) requires PCB layout modification. Substitution is conditional based on application requirements and board redesign feasibility.

Parameter Comparison

Parameter	REG102NA-A/250	REG102NA-A/3K	TPS7A2501DRVR
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Category	Power Management (PMIC)	Power Management (PMIC)	Power Management (PMIC)
Output Configuration	Positive	Positive	Positive
Output Type	Adjustable	Adjustable	Adjustable
Current - Output	250mA	250mA	300mA
Voltage - Input (Max)	10V	10V	18V
Voltage - Output (Min/Fixed)	2.5V	2.5V	1.24V
Voltage - Output (Max)	5.5V	5.5V	17.66V
Voltage Dropout (Max)	0.27V @ 250mA	0.27V @ 250mA	0.34V @ 300mA
Current - Quiescent (Iq)	500 µA	500 µA	4.5 µA
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	6-WDFN Exposed Pad
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C
Product Status	Last Time Buy	Last Time Buy	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

REG102NA-A/3K is the direct parametric equivalent and preferred substitute when component availability is the primary concern. Both parts share identical electrical specifications, operating temperature range, and package footprint. The only distinction is packaging format (Tape & Reel variant). This substitution requires no circuit redesign or PCB layout modification. Both parts carry Last Time Buy status, indicating limited future availability.

TPS7A2501DRVR is a functional upgrade suitable for new designs or redesign scenarios where enhanced performance justifies PCB layout modification. This part offers Active product status, ensuring long-term availability and supply chain stability. The TPS7A2501DRVR provides superior specifications including higher output current capacity, wider input voltage tolerance, significantly lower quiescent current consumption, and extended operating temperature range. However, the different package format (6-WSON vs SOT-23-5) mandates PCB footprint redesign. Selection of this substitute should be based on application requirements for improved performance characteristics and long-term component lifecycle management.

Frequently Asked Questions (FAQ)

Q: Can REG102NA-A/3K be used as a direct replacement for REG102NA-A/250?

A: Yes. REG102NA-A/3K is a parametric equivalent with identical electrical specifications, output current rating, voltage ranges, and operating temperature. Both use the same SOT-23-5 package. The substitution is direct with no circuit modifications required.

Q: What are the key differences between REG102NA-A/250 and TPS7A2501DRVR?

A: The TPS7A2501DRVR offers higher output current (300mA vs 250mA), wider input voltage range (18V vs 10V), lower quiescent current (4.5µA vs 500µA), and extended operating temperature range (-40°C to 125°C vs -40°C to 85°C). The package format differs (6-WSON vs SOT-23-5), requiring PCB redesign.

Q: Is TPS7A2501DRVR compatible with existing PCB layouts designed for REG102NA-A/250?

A: No. The TPS7A2501DRVR uses a 6-WSON package while REG102NA-A/250 uses SOT-23-5. Different pin configurations and footprints require PCB layout modification. This substitution is suitable only for new designs or board redesign projects.

Q: Why is REG102NA-A/250 classified as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued or is discontinuing production. This classification signals the need to identify equivalent or substitute parts for future supply chain continuity.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. REG102NA-A/250, REG102NA-A/3K, and TPS7A2501DRVR are all ROHS3 compliant, meeting environmental and regulatory requirements.

Q: Which substitute should be selected for long-term production?

A: TPS7A2501DRVR is recommended for long-term production due to Active product status, ensuring sustained availability and supply chain stability. REG102NA-A/3K is suitable only for short-term or existing inventory management due to Last Time Buy status.

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