LM4050BIM3-5.0 Equivalent & Substitute Parts

Part Overview

The LM4050BIM3-5.0 is a shunt voltage reference IC manufactured by Texas Instruments, designed to provide a fixed 5V output with ±0.2% tolerance in a SOT-23-3 surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The part operates across the industrial temperature range of -40°C to 85°C and delivers 15 mA output current with a cathode current of 80 µA.

Key Parameters

Parameter	Value
Reference Type	Shunt
Output Type	Fixed
Voltage - Output (Min/Fixed)	5V
Current - Output	15 mA
Tolerance	±0.2%
Temperature Coefficient	50ppm/°C
Noise - 10Hz to 10kHz	93µVrms
Current - Cathode	80 µA
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the LM4050BIM3-5.0 are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Fixed 5V output voltage
SOT-23-3 package compatibility
15 mA output current capability
Surface mount mounting type
ROHS3 compliance and MSL Level 1 rating

Parts are classified into two categories:

Parametric Equivalents maintain identical electrical specifications including ±0.2% tolerance, 50ppm/°C temperature coefficient, and 93µVrms noise performance. These parts are direct functional replacements with matching performance characteristics.

Manufacturer Recommended Alternatives offer enhanced specifications such as improved tolerance (±0.1%), lower temperature coefficients, or extended operating temperature ranges (-40°C to 125°C). These parts provide superior performance while maintaining core 5V output and SOT-23-3 package compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Output	Current - Output	Tolerance	Temperature Coefficient	Noise - 10Hz to 10kHz	Current - Cathode	Operating Temperature	Package	RoHS Status
LM4050BIM3-5.0	Texas Instruments	Obsolete	5V	15 mA	±0.2%	50ppm/°C	93µVrms	80 µA	-40°C ~ 85°C	SOT-23-3	ROHS3 Compliant
LM4050BIM3-5.0/NOPB	National Semiconductor	Active	5V	15 mA	±0.2%	50ppm/°C	93µVrms	80 µA	-40°C ~ 85°C	SOT-23-3	Not specified
LM4050BIM3X-5.0/NOPB	National Semiconductor	Active	5V	15 mA	±0.2%	50ppm/°C	93µVrms	80 µA	-40°C ~ 85°C	SOT-23-3	Not specified
TL4050B50IDBZR	Texas Instruments	Active	5V	15 mA	±0.2%	50ppm/°C	93µVrms	80 µA	-40°C ~ 85°C	SOT-23-3	ROHS3 Compliant
TL4050B50IDBZT	Texas Instruments	Active	5V	15 mA	±0.2%	50ppm/°C	93µVrms	80 µA	-40°C ~ 85°C	SOT-23-3	ROHS3 Compliant
ADR5045ARTZ-R2	Analog Devices Inc.	Discontinued at DiGi Electronics	5V	15 mA	±0.2%	100ppm/°C	280µVrms	60 µA	-40°C ~ 125°C	SOT-23-3	Not specified
ADR5045ARTZ-REEL7	Analog Devices Inc.	Active	5V	15 mA	±0.2%	100ppm/°C	280µVrms	60 µA	-40°C ~ 125°C	SOT-23-3	ROHS3 Compliant
ADR5045BRTZ-REEL7	Analog Devices Inc.	Active	5V	15 mA	±0.1%	75ppm/°C	280µVrms	60 µA	-40°C ~ 125°C	SOT-23-3	ROHS3 Compliant
LM4040AEM3-5.0+T	Analog Devices Inc./Maxim Integrated	Active	5V	15 mA	±0.1%	100ppm/°C	80µVrms	80 µA	-40°C ~ 125°C	SOT-23-3	ROHS3 Compliant
LM4040AIM3-5.0+T	Analog Devices Inc./Maxim Integrated	Active	5V	15 mA	±0.1%	100ppm/°C	80µVrms	80 µA	-40°C ~ 85°C	SOT-23-3	ROHS3 Compliant
LM4040B50FTA	Diodes Incorporated	Active	5V	15 mA	±0.2%	100ppm/°C	80µVrms	83 µA	-40°C ~ 125°C	SOT-23-3	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Pin-Compatible Replacement)

The TL4050B50IDBZR and TL4050B50IDBZT from Texas Instruments are direct parametric equivalents with identical electrical specifications and active product status. Both maintain the original ±0.2% tolerance, 50ppm/°C temperature coefficient, and 93µVrms noise characteristics. These parts are ROHS3 compliant and carry MSL Level 1 rating, matching the original part's environmental qualifications.

Enhanced Performance Alternatives (Active Status)

The ADR5045ARTZ-REEL7 and ADR5045BRTZ-REEL7 from Analog Devices Inc. offer extended operating temperature range (-40°C to 125°C) compared to the original -40°C to 85°C specification. The ADR5045BRTZ-REEL7 provides superior tolerance at ±0.1% and lower temperature coefficient at 75ppm/°C. Both are ROHS3 compliant and actively produced.

The LM4040AEM3-5.0+T and LM4040AIM3-5.0+T from Analog Devices Inc./Maxim Integrated deliver ±0.1% tolerance with 80µVrms noise performance. The LM4040AEM3-5.0+T extends to -40°C to 125°C operating range and includes AEC-Q100 automotive qualification. Both are ROHS3 compliant and actively produced.

The LM4040B50FTA from Diodes Incorporated maintains ±0.2% tolerance with extended temperature range to 125°C and is ROHS3 compliant with active product status.

Discontinued Alternatives (Not Recommended for New Designs)

The ADR5045ARTZ-R2 is discontinued at DiGi Electronics and should not be selected for new production designs despite active inventory availability.

The LM4050BIM3-5.0/NOPB and LM4050BIM3X-5.0/NOPB from National Semiconductor are parametric equivalents but lack specified RoHS compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can I use TL4050B50IDBZR as a direct replacement for LM4050BIM3-5.0?

A: Yes. The TL4050B50IDBZR is a parametric equivalent with identical electrical specifications, SOT-23-3 package, and ROHS3 compliance. Both deliver 5V output at ±0.2% tolerance with 50ppm/°C temperature coefficient and 93µVrms noise performance.

Q: What is the difference between the ADR5045ARTZ-REEL7 and ADR5045BRTZ-REEL7?

A: The ADR5045BRTZ-REEL7 offers improved tolerance at ±0.1% versus ±0.2%, and lower temperature coefficient at 75ppm/°C versus 100ppm/°C. Both maintain 5V output, 15 mA current, SOT-23-3 package, and extended -40°C to 125°C operating range. The ADR5045BRTZ-REEL7 provides superior stability across temperature variations.

Q: Are all substitute parts ROHS3 compliant?

A: The TL4050B50IDBZR, TL4050B50IDBZT, ADR5045ARTZ-REEL7, ADR5045BRTZ-REEL7, LM4040AEM3-5.0+T, LM4040AIM3-5.0+T, and LM4040B50FTA are ROHS3 compliant. The LM4050BIM3-5.0/NOPB and LM4050BIM3X-5.0/NOPB do not specify RoHS compliance status.

Q: Which substitute offers the widest operating temperature range?

A: The ADR5045ARTZ-REEL7, ADR5045BRTZ-REEL7, LM4040AEM3-5.0+T, and LM4040B50FTA all extend to -40°C to 125°C, compared to the original -40°C to 85°C range. The LM4040AIM3-5.0+T maintains the original -40°C to 85°C range.

Q: What packaging options are available?

A: All substitute parts use the SOT-23-3 package. Packaging variants include Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) configurations. Verify specific packaging requirements with your procurement specifications.

Q: Can I use parts with ±0.1% tolerance in place of ±0.2% tolerance?

A: Yes. Parts with ±0.1% tolerance (ADR5045BRTZ-REEL7, LM4040AEM3-5.0+T, LM4040AIM3-5.0+T) provide tighter voltage regulation and are functionally compatible with designs specified for ±0.2% tolerance. This represents an improvement in output voltage accuracy.

Q: Is the LM4050BIM3-5.0/NOPB from National Semiconductor a suitable replacement?

A: The LM4050BIM3-5.0/NOPB is a parametric equivalent with identical electrical specifications and active product status. However, RoHS compliance status is not specified. Verify compliance requirements with your design standards before selection.

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