REF3130AIDBZRG4 Equivalent & Substitute Parts

Part Overview

The REF3130AIDBZRG4 is a series voltage reference IC from Texas Instruments, delivering a fixed 3V output with ±0.2% tolerance in a SOT-23-3 surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

The REF3130AIDBZRG4 functions as a precision voltage reference suitable for analog signal conditioning, data acquisition systems, and precision measurement applications requiring stable reference voltages across industrial temperature ranges.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Part Number	REF3130AIDBZRG4
Category	Power Management (PMIC)
Output Voltage	3V Fixed
Output Current	10 mA
Tolerance	±0.2%
Temperature Coefficient	20 ppm/°C
Input Voltage Range	3.05V ~ 5.5V
Supply Current	135 µA
Operating Temperature	-40°C ~ 125°C
Package	SOT-23-3 (TO-236-3, SC-59)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Output voltage matching (3V fixed)
Tolerance specification (±0.2% or tighter)
Package compatibility (SOT-23-3)
Input voltage range compatibility
Operating temperature range coverage
Output current capability (minimum 10 mA required)

Substitute parts are grouped into three categories:

Parametric Equivalents (Direct Replacements): REF3130AIDBZR, REF3130AIDBZT, and REF3130AQDBZRQ1 maintain identical electrical specifications and package format. These parts differ only in product status (active vs. obsolete) and qualification level (automotive grade for Q1 variant).

Manufacturer Recommended Substitutes (Functional Alternatives): LT1460 series parts from Analog Devices Inc. provide 3V fixed output with SOT-23-3 packaging but feature higher output current capability (40 mA) and wider input voltage range (3.9V ~ 20V). Tolerance variants range from ±0.2% to ±0.5%.

Cross-Manufacturer Alternative: MAX6030AEUR+T from Analog Devices Inc./Maxim Integrated delivers 3V fixed output with ±0.2% tolerance and SOT-23-3 packaging, with significantly higher output current (500 µA) and lower supply current (35 µA).

Parameter Comparison

Part Number	Manufacturer	Output Voltage	Output Current	Tolerance	Temp Coeff	Input Range	Supply Current	Temp Range	Package	Status
REF3130AIDBZRG4	Texas Instruments	3V	10 mA	±0.2%	20 ppm/°C	3.05V ~ 5.5V	135 µA	-40°C ~ 125°C	SOT-23-3	Obsolete
REF3130AIDBZR	Texas Instruments	3V	10 mA	±0.2%	20 ppm/°C	3.05V ~ 5.5V	135 µA	-40°C ~ 125°C	SOT-23-3	Active
REF3130AIDBZT	Texas Instruments	3V	10 mA	±0.2%	20 ppm/°C	3.05V ~ 5.5V	135 µA	-40°C ~ 125°C	SOT-23-3	Active
REF3130AQDBZRQ1	Texas Instruments	3V	10 mA	±0.2%	20 ppm/°C	3.05V ~ 5.5V	135 µA	-40°C ~ 125°C	SOT-23-3	Active
LT1460HCS3-3#TRMPBF	Analog Devices Inc.	3V	40 mA	±0.2%	20 ppm/°C	3.9V ~ 20V	220 µA	0°C ~ 70°C	SOT-23-3	Active
LT1460HCS3-3#TRPBF	Analog Devices Inc.	3V	40 mA	±0.2%	20 ppm/°C	3.9V ~ 20V	220 µA	0°C ~ 70°C	SOT-23-3	Active
LT1460JCS3-3#TRMPBF	Analog Devices Inc.	3V	40 mA	±0.4%	20 ppm/°C	3.9V ~ 20V	220 µA	0°C ~ 70°C	SOT-23-3	Active
LT1460JCS3-3#TRPBF	Analog Devices Inc.	3V	40 mA	±0.4%	20 ppm/°C	3.9V ~ 20V	220 µA	0°C ~ 70°C	SOT-23-3	Active
LT1460KCS3-3#TRMPBF	Analog Devices Inc.	3V	40 mA	±0.5%	50 ppm/°C	3.9V ~ 20V	220 µA	0°C ~ 70°C	SOT-23-3	Active
LT1460KCS3-3#TRPBF	Analog Devices Inc.	3V	40 mA	±0.5%	50 ppm/°C	3.9V ~ 20V	220 µA	0°C ~ 70°C	SOT-23-3	Active
MAX6030AEUR+T	Analog Devices Inc./Maxim Integrated	3V	500 µA	±0.2%	20 ppm/°C	3.2V ~ 12.6V	35 µA	-40°C ~ 85°C	SOT-23-3	Active

Engineering Selection Recommendations

Direct Replacement (Preferred): REF3130AIDBZR and REF3130AIDBZT are active-status parametric equivalents with identical electrical and thermal specifications. Both maintain full compatibility with the obsolete REF3130AIDBZRG4 across all operating parameters and temperature ranges. REF3130AQDBZRQ1 provides the same specifications with automotive-grade qualification (AEC-Q100) for applications requiring automotive compliance.

Functional Alternatives with Enhanced Capability: LT1460 series parts (H, J, K grades) offer higher output current (40 mA vs. 10 mA) and extended input voltage range (3.9V ~ 20V vs. 3.05V ~ 5.5V). These are suitable for applications requiring greater load capability. Tolerance and temperature coefficient specifications vary by grade; H-grade maintains ±0.2% tolerance matching the original part, while J and K grades have relaxed tolerances (±0.4% and ±0.5% respectively). Operating temperature range is narrower (0°C ~ 70°C vs. -40°C ~ 125°C).

Low-Power Alternative: MAX6030AEUR+T delivers ±0.2% tolerance with significantly reduced supply current (35 µA vs. 135 µA) and higher output current capability (500 µA). Input voltage range is wider (3.2V ~ 12.6V). Operating temperature range is -40°C ~ 85°C, which covers the lower end of the original specification but not the full 125°C maximum.

All recommended substitutes are ROHS3 compliant and REACH unaffected, matching the compliance profile of the original part.

Frequently Asked Questions (FAQ)

Q: Can REF3130AIDBZR directly replace REF3130AIDBZRG4 in production designs?

A: Yes. REF3130AIDBZR is a parametric equivalent with identical output voltage (3V), tolerance (±0.2%), output current (10 mA), temperature coefficient (20 ppm/°C), input voltage range (3.05V ~ 5.5V), supply current (135 µA), operating temperature range (-40°C ~ 125°C), and SOT-23-3 packaging. The only difference is product status (active vs. obsolete).

Q: What is the difference between REF3130AIDBZR and REF3130AIDBZT?

A: Both are parametric equivalents with identical electrical specifications. The difference lies in packaging format: REF3130AIDBZR is supplied in Cut Tape (CT) & Digi-Reel format, while REF3130AIDBZT is also supplied in Cut Tape & Digi-Reel format. Both are active-status parts suitable for direct substitution.

Q: When should I use LT1460 series parts instead of REF3130 equivalents?

A: LT1460 series parts are appropriate when your application requires higher output current (40 mA vs. 10 mA) or extended input voltage range (3.9V ~ 20V vs. 3.05V ~ 5.5V). However, operating temperature range is limited to 0°C ~ 70°C, which may not cover industrial applications requiring -40°C operation. Tolerance specifications vary by grade (H-grade: ±0.2%, J-grade: ±0.4%, K-grade: ±0.5%).

Q: Is MAX6030AEUR+T compatible with REF3130AIDBZRG4?

A: MAX6030AEUR+T provides 3V fixed output with ±0.2% tolerance and SOT-23-3 packaging, making it functionally compatible. However, operating temperature range is -40°C ~ 85°C, which does not extend to the original part's 125°C maximum. Supply current is significantly lower (35 µA vs. 135 µA), and output current capability is higher (500 µA vs. 10 mA). Use this part only if your application does not require operation above 85°C.

Q: What does the Q1 designation in REF3130AQDBZRQ1 indicate?

A: The Q1 designation indicates automotive-grade qualification per AEC-Q100 standard. REF3130AQDBZRQ1 maintains identical electrical specifications to REF3130AIDBZR but includes automotive qualification and has moisture sensitivity level (MSL) of 2 (1 Year) vs. MSL 1 (Unlimited) for standard grades. Use this part for automotive applications requiring AEC-Q100 compliance.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use SOT-23-3 (TO-236-3, SC-59) surface mount packaging, ensuring mechanical compatibility. Packaging format variations (Cut Tape, Digi-Reel, Tape & Reel) affect procurement and handling but not electrical performance or PCB footprint.

Q: Which substitute offers the best low-power performance?

A: MAX6030AEUR+T has the lowest supply current at 35 µA compared to 135 µA for REF3130AIDBZRG4 and 220 µA for LT1460 series. This makes MAX6030AEUR+T suitable for battery-powered or low-power applications, provided the operating temperature range (-40°C ~ 85°C) meets your requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message