REG104GA-2.5G4 Equivalent & Substitute Parts

Part Overview

The REG104GA-2.5G4 is a linear voltage regulator IC from Texas Instruments designed for positive fixed output applications. It delivers 1A output current at a fixed 2.5V output with a maximum dropout voltage of 0.48V at full load. The device is housed in a SOT-223-6 surface mount package and includes integrated over-current and over-temperature protection features.

This part is currently discontinued at DiGi Electronics. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and maintenance applications.

Key Parameters

Parameter	Value
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	15V
Voltage - Output (Min/Fixed)	2.5V
Voltage Dropout (Max)	0.48V @ 1A
Current - Output	1A
Current - Quiescent (Iq)	0.7 mA
PSRR	65dB (120Hz)
Control Features	Enable
Protection Features	Over Current, Over Temperature
Operating Temperature	-40°C ~ 85°C
Package / Case	SOT-223-6
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)

Substitute Part Grouping Explanation

Substitution for the REG104GA-2.5G4 is determined by strict equivalence across the following critical parameters:

Output voltage: 2.5V fixed
Output current capability: 1A minimum
Maximum input voltage: 15V or greater
Package type: SOT-223-6 surface mount
Protection features: Over-current and over-temperature protection
Operating temperature range: -40°C to 85°C minimum
Regulatory compliance: ROHS3 compliant

The REG104GA-2.5 qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and packaging format.

Parameter Comparison

Parameter	REG104GA-2.5G4	REG104GA-2.5
Manufacturer	Texas Instruments	Texas Instruments
Output Configuration	Positive	Positive
Output Type	Fixed	Fixed
Voltage - Output (Min/Fixed)	2.5V	2.5V
Voltage - Input (Max)	15V	15V
Voltage Dropout (Max)	0.48V @ 1A	0.48V @ 1A
Current - Output	1A	1A
Current - Quiescent (Iq)	0.7 mA	0.7 mA
PSRR	65dB (120Hz)	65dB (120Hz)
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	SOT-223-6	SOT-223-6
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)	2 (1 Year)
Product Status	Discontinued at DiGi Electronics	Last Time Buy
Packaging Format	Tape and Reel	Tube

Engineering Selection Recommendations

The REG104GA-2.5 is the direct substitute for the REG104GA-2.5G4. Both parts are manufactured by Texas Instruments and share identical electrical specifications, performance characteristics, and regulatory compliance status. The REG104GA-2.5 maintains ROHS3 compliance and equivalent moisture sensitivity ratings.

The primary consideration is product lifecycle status. The REG104GA-2.5G4 is discontinued at DiGi Electronics, while the REG104GA-2.5 carries a Last Time Buy status, indicating limited future availability. For new designs or long-term production requirements, component procurement planning should account for this lifecycle constraint.

Packaging format differs between the two parts: the REG104GA-2.5G4 is supplied in tape and reel format, while the REG104GA-2.5 is supplied in tube packaging. This distinction affects handling, storage, and automated assembly processes but does not impact electrical performance or functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the REG104GA-2.5 be used as a direct replacement for the REG104GA-2.5G4?

A: Yes. Both parts are electrically identical with matching output voltage, current rating, dropout voltage, protection features, and operating temperature range. They share the same SOT-223-6 package and are both ROHS3 compliant.

Q: What is the difference between the REG104GA-2.5G4 and REG104GA-2.5?

A: The electrical and functional specifications are identical. The differences are packaging format (tape and reel versus tube) and product lifecycle status (discontinued versus last time buy).

Q: Does packaging format affect circuit board assembly?

A: Packaging format affects handling and automated assembly processes. Tape and reel format is optimized for high-speed pick-and-place equipment, while tube packaging is suitable for manual or lower-volume assembly. Both formats contain the same component in the same SOT-223-6 package.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance, moisture sensitivity level (MSL 2, 1 Year), REACH status, and ECCN classification.

Q: What should be considered when sourcing the REG104GA-2.5 as a replacement?

A: The REG104GA-2.5 carries a Last Time Buy status, indicating limited inventory availability. Procurement should prioritize securing adequate stock for current and near-term production requirements before availability becomes constrained.

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