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REF3130AIDBZTG4 Equivalent & Substitute Parts
Part Overview
The REF3130AIDBZTG4 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 continuity. The REF3130AIDBZTG4 operates across -40°C to 125°C with a 10 mA output current capability and 135 µA supply current, suitable for precision analog applications requiring stable voltage references.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Output Voltage (Fixed) | 3V |
| 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 |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution for the REF3130AIDBZTG4 is determined by the following critical parameters: fixed 3V output voltage, ±0.2% tolerance, SOT-23-3 package, and surface mount configuration. Parts are grouped into two categories:
Direct Equivalents (Texas Instruments REF3130 Series): Parts maintaining identical electrical specifications and package format. These include REF3130AIDBZT (active status, cut tape packaging), REF3130AIDBZR (active status, cut tape packaging), and REF3130AQDBZRQ1 (automotive-qualified variant with AEC-Q100 certification).
Functional Alternatives (Analog Devices LT1460 and Maxim MAX6030 Series): Parts with matching 3V fixed output and ±0.2% tolerance in SOT-23-3 packages but with different output current ratings, input voltage ranges, or operating temperature specifications. These include LT1460HCS3-3#TRMPBF, LT1460HCS3-3#TRPBF, LT1460JCS3-3#TRMPBF, LT1460JCS3-3#TRPBF, LT1460KCS3-3#TRMPBF, LT1460KCS3-3#TRPBF, and MAX6030AEUR+T.
Parameter Comparison
| Part Number | Manufacturer | Output Voltage | Output Current | Tolerance | Temp Coeff | Input Voltage | Supply Current | Operating Temp | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| REF3130AIDBZTG4 | Texas Instruments | 3V | 10 mA | ±0.2% | 20 ppm/°C | 3.05V ~ 5.5V | 135 µA | -40°C ~ 125°C | SOT-23-3 | Obsolete |
| 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 |
| 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 |
| 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
For Direct Replacement: REF3130AIDBZT and REF3130AIDBZR are the primary substitutes, offering identical electrical specifications and operating temperature range to the obsolete REF3130AIDBZTG4. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
For Automotive Applications: REF3130AQDBZRQ1 provides the same electrical performance as the original part with automotive-grade qualification (AEC-Q100) and is suitable for applications requiring automotive-level reliability. This variant has MSL 2 (1 Year) moisture sensitivity.
For Extended Output Current Requirements: LT1460HCS3-3#TRMPBF and LT1460HCS3-3#TRPBF from Analog Devices maintain ±0.2% tolerance and 20 ppm/°C temperature coefficient but provide 40 mA output current versus the original 10 mA. These parts operate within 0°C to 70°C and require input voltage between 3.9V and 20V.
For Lower Tolerance Applications: LT1460JCS3-3#TRMPBF and LT1460JCS3-3#TRPBF offer ±0.4% tolerance with 40 mA output current. LT1460KCS3-3#TRMPBF and LT1460KCS3-3#TRPBF provide ±0.5% tolerance with 50 ppm/°C temperature coefficient and 40 mA output current.
For Low Supply Current Applications: MAX6030AEUR+T delivers the lowest supply current at 35 µA with ±0.2% tolerance, 500 µA output current capability, and extended input voltage range (3.2V to 12.6V). Operating temperature is -40°C to 85°C.
Frequently Asked Questions (FAQ)
Q: Can REF3130AIDBZT directly replace REF3130AIDBZTG4? A: Yes. REF3130AIDBZT is electrically and mechanically identical to the obsolete REF3130AIDBZTG4, with matching 3V output, ±0.2% tolerance, 10 mA output current, and SOT-23-3 package. The primary difference is product status (active versus obsolete).
Q: What is the difference between REF3130AIDBZT and REF3130AIDBZR? A: Both parts are electrically identical with the same specifications. The difference lies in packaging designation: AIDBZT uses Cut Tape (CT) & Digi-Reel® packaging, while AIDBZR also uses Cut Tape (CT) & Digi-Reel® packaging. Selection depends on procurement and handling requirements.
Q: Can LT1460 series parts substitute for REF3130AIDBZTG4? A: LT1460 series parts share the 3V fixed output and SOT-23-3 package but differ in output current (40 mA versus 10 mA), input voltage range (3.9V to 20V versus 3.05V to 5.5V), operating temperature (0°C to 70°C versus -40°C to 125°C), and tolerance grades. Substitution is valid only if the application tolerates these parameter differences.
Q: Is REF3130AQDBZRQ1 suitable for automotive applications? A: Yes. REF3130AQDBZRQ1 carries AEC-Q100 automotive qualification and maintains identical electrical specifications to REF3130AIDBZTG4. It is designed for automotive-grade reliability requirements.
Q: What is the advantage of MAX6030AEUR+T over REF3130AIDBZT? A: MAX6030AEUR+T provides significantly lower supply current (35 µA versus 135 µA), higher output current capability (500 µA versus 10 mA), and wider input voltage range (3.2V to 12.6V versus 3.05V to 5.5V). Operating temperature range is -40°C to 85°C. Selection depends on application power budget and output current requirements.
Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the environmental compliance of the original REF3130AIDBZTG4.
Q: What packaging options are available for substitute parts? A: All substitute parts use SOT-23-3 surface mount packages. Packaging designations vary: Cut Tape (CT) & Digi-Reel® for REF3130 series, Tape & Reel (TR) for LT1460 series, and Tape & Reel (TR) for MAX6030AEUR+T. Selection depends on procurement volume and handling equipment compatibility.
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