REF3240AIDBVRG4 Equivalent & Substitute Parts

Part Overview

The REF3240AIDBVRG4 is a series voltage reference IC from Texas Instruments, delivering a fixed 4.096V output with ±0.2% tolerance in a SOT-23-6 surface mount package. This component is designed for precision analog applications requiring stable reference voltages with low noise characteristics. The part is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing production and design requirements.

Substiute Parts

REF3240AIDBVRG4

Texas InstrumentsIn Stock: 991REF3240AIDBVRG4 Datasheet

Current PartRFQ

REF3440IDBVR

Texas InstrumentsIn Stock: 3174REF3440IDBVR Datasheet

MFR RecommendedRFQ

REF3240AIDBVR

Texas InstrumentsIn Stock: 5892REF3240AIDBVR Datasheet

Parametric EquivalentRFQ

REF3240AIDBVT

Texas InstrumentsIn Stock: 1902REF3240AIDBVT Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the REF3240AIDBVRG4 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Fixed output voltage of 4.096V
• Output current capability of 10 mA minimum
• SOT-23-6 package footprint
• Operating temperature range of -40°C to 125°C
• Surface mount mounting type

Tolerance and Performance Considerations: Substitute parts must maintain the same output voltage and support the required output current. Tolerance, temperature coefficient, and noise specifications may vary, but the part must function within the application's precision requirements.

Packaging and Compliance: All substitute parts must be in SOT-23-6 package format, ROHS3 compliant, and have MSL rating of 2 or better to ensure compatibility with existing PCB designs and manufacturing processes.

Parameter Comparison

Engineering Selection Recommendations

REF3440IDBVR (MFR Recommended Substitute): This is the manufacturer-recommended substitute for the REF3240AIDBVRG4. It maintains the same 4.096V fixed output voltage, 10 mA output current capability, and SOT-23-6 package format. The REF3440IDBVR offers superior performance with ±0.05% tolerance, 6 ppm/°C temperature coefficient, and significantly lower noise specifications. It supports a wider input voltage range (4.596V ~ 12V) and lower supply current (95 µA). The part is currently active and ROHS3 compliant, making it suitable for new designs and ongoing production.

REF3240AIDBVR (Parametric Equivalent): This part provides identical electrical specifications to the main part, including ±0.2% tolerance, 20 ppm/°C temperature coefficient, and equivalent noise performance. It is a direct parametric match in SOT-23-6 package with the same input voltage range and supply current. However, it is marked as "Not For New Designs," making it suitable only for legacy system support or replacement applications where existing designs require exact parameter matching.

REF3240AIDBVT (Parametric Equivalent): This variant matches the REF3240AIDBVR in all electrical parameters and is also marked as "Not For New Designs." It provides the same ±0.2% tolerance, 20 ppm/°C temperature coefficient, and noise characteristics. Selection between REF3240AIDBVR and REF3240AIDBVT should be based on packaging availability and inventory status, as both are parametrically identical.

Frequently Asked Questions (FAQ)

Q: Can the REF3440IDBVR directly replace the REF3240AIDBVRG4 in existing designs?

A: Yes. The REF3440IDBVR maintains the same 4.096V fixed output voltage, 10 mA output current, and SOT-23-6 package footprint. It is electrically and mechanically compatible. The superior performance specifications (lower tolerance, temperature coefficient, and noise) make it a direct upgrade. Verify that your application's input voltage supply is within the REF3440IDBVR range of 4.596V ~ 12V.

Q: What is the difference between REF3240AIDBVR and REF3240AIDBVT?

A: Both parts are parametrically identical with ±0.2% tolerance, 20 ppm/°C temperature coefficient, and equivalent noise performance in SOT-23-6 packages. The difference lies in packaging format and inventory availability. Selection should be based on your procurement requirements and available stock.

Q: Why is the REF3440IDBVR recommended over the REF3240AIDBVR?

A: The REF3440IDBVR is the manufacturer-recommended substitute because it is currently active and suitable for new designs. It offers superior performance with ±0.05% tolerance versus ±0.2%, lower temperature coefficient (6 ppm/°C versus 20 ppm/°C), and significantly reduced noise. The REF3240AIDBVR is marked "Not For New Designs," limiting its use to legacy applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed—REF3440IDBVR, REF3240AIDBVR, and REF3240AIDBVT—are ROHS3 compliant with MSL rating of 2 (1 Year), ensuring compatibility with modern manufacturing processes and environmental regulations.

Q: What are the key parameters that determine substitutability?

A: The critical parameters are fixed output voltage (4.096V), output current capability (10 mA), SOT-23-6 package format, operating temperature range (-40°C ~ 125°C), and surface mount mounting type. All listed substitutes meet these requirements. Tolerance, temperature coefficient, and noise specifications may vary but must be evaluated against your application's precision requirements.