LM4040DIM3-5.0 Equivalent & Substitute Parts

Part Overview

The LM4040DIM3-5.0 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications. This fixed 5V reference device delivers 15 mA output current with ±1% tolerance and operates across the industrial temperature range of -40°C to 85°C. The part is classified as Last Time Buy, indicating limited availability and the necessity to identify equivalent alternatives for ongoing design requirements and production planning.

Key Parameters

Parameter	Value
Reference Type	Shunt
Output Type	Fixed
Voltage - Output	5V
Current - Output	15 mA
Tolerance	±1%
Temperature Coefficient	150 ppm/°C
Noise (10Hz to 10kHz)	80 µVrms
Current - Cathode	85 µA
Operating Temperature	-40°C to 85°C
Package / Case	SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM4040DIM3-5.0 is determined by the following critical parameters:

Primary Substitution Criteria:

Reference Type: Shunt
Output Type: Fixed
Voltage - Output: 5V
Current - Output: 15 mA
Package / Case: SOT-23-3
Mounting Type: Surface Mount

Secondary Compatibility Parameters:

Tolerance: ±1% or better
Operating Temperature Range: Minimum -40°C to 85°C
RoHS Compliance: ROHS3 Compliant

Parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalents maintain identical electrical specifications and packaging, differing only in product status, packaging format (Cut Tape vs. Tape & Reel), or minor part number variations.

Upgrade Parts offer improved performance characteristics (lower tolerance, lower temperature coefficient, lower noise) while maintaining core electrical and mechanical compatibility.

Manufacturer Recommended Parts provide superior specifications and extended temperature ranges, suitable for applications requiring enhanced precision or wider operating conditions.

Parameter Comparison

Part Number	Manufacturer	Voltage Output	Current Output	Tolerance	Temp Coeff	Noise (10Hz-10kHz)	Cathode Current	Operating Temp	Product Status	Packaging
LM4040DIM3-5.0	Texas Instruments	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	-40°C to 85°C	Last Time Buy	Cut Tape
LM4040D50IDBZR	Texas Instruments	5V	15 mA	±1%	150 ppm/°C	80 µVrms	95 µA	-40°C to 85°C	Active	Cut Tape
LM4040D50IDBZT	Texas Instruments	5V	15 mA	±1%	150 ppm/°C	80 µVrms	95 µA	-40°C to 85°C	Active	Tape & Reel
LM4040DIM3-5.0/NOPB	Texas Instruments	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	-40°C to 85°C	Active	Cut Tape
LM4040DIM3X-5.0	Texas Instruments	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	-40°C to 85°C	Last Time Buy	Cut Tape
LM4040DIM3X-5.0/NOPB	National Semiconductor	5V	15 mA	±1%	150 ppm/°C	80 µVrms	85 µA	-40°C to 85°C	Active	Not Specified
ZR40401F50TA	Diodes Incorporated	5V	15 mA	±1%	100 ppm/°C	105 µVrms	60 µA	-40°C to 85°C	Last Time Buy	Tape & Reel
ADR5045ARTZ-R2	Analog Devices Inc.	5V	15 mA	±0.2%	100 ppm/°C	280 µVrms	60 µA	-40°C to 125°C	Discontinued	Not Specified
ADR5045ARTZ-REEL7	Analog Devices Inc.	5V	15 mA	±0.2%	100 ppm/°C	280 µVrms	60 µA	-40°C to 125°C	Active	Tape & Reel
ADR5045BRTZ-REEL7	Analog Devices Inc.	5V	15 mA	±0.1%	75 ppm/°C	280 µVrms	60 µA	-40°C to 125°C	Active	Cut Tape
LM4040AEM3-5.0+T	Analog Devices Inc./Maxim Integrated	5V	15 mA	±0.1%	100 ppm/°C	80 µVrms	80 µA	-40°C to 125°C	Active	Cut Tape

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

LM4040D50IDBZR and LM4040D50IDBZT are active production alternatives with identical electrical specifications. LM4040D50IDBZR is available in Cut Tape format with 9200 units in stock, while LM4040D50IDBZT is available in Tape & Reel format with 6550 units in stock. Both maintain ROHS3 compliance and unlimited MSL rating. The cathode current specification differs slightly (95 µA vs. 85 µA), which is within acceptable tolerance for most applications.

LM4040DIM3-5.0/NOPB provides an active production equivalent with identical specifications to the main part, including 85 µA cathode current and 2400 units in stock.

LM4040DIM3X-5.0/NOPB, manufactured by National Semiconductor, maintains full electrical and mechanical compatibility with 3623 units available.

For Enhanced Performance (Upgrade Parts):

ZR40401F50TA from Diodes Incorporated offers improved temperature coefficient (100 ppm/°C vs. 150 ppm/°C) and lower cathode current (60 µA vs. 85 µA), though noise specification is slightly higher at 105 µVrms. This part is Last Time Buy status with 2080 units in stock.

For Superior Precision Applications (Manufacturer Recommended):

ADR5045ARTZ-REEL7 provides ±0.2% tolerance with extended operating temperature range (-40°C to 125°C) and is actively produced with 36120 units in stock.

ADR5045BRTZ-REEL7 delivers the highest precision at ±0.1% tolerance with 75 ppm/°C temperature coefficient and extended temperature range, with 15435 units in stock.

LM4040AEM3-5.0+T offers ±0.1% tolerance, extended temperature range to 125°C, and includes AEC-Q100 automotive qualification with 20400 units in stock.

Frequently Asked Questions (FAQ)

Q: Can LM4040D50IDBZR directly replace LM4040DIM3-5.0?

A: Yes. Both parts maintain identical voltage output (5V), current output (15 mA), tolerance (±1%), temperature coefficient (150 ppm/°C), and SOT-23-3 packaging. The cathode current specification differs by 10 µA (95 µA vs. 85 µA), which does not affect functional compatibility in standard applications. LM4040D50IDBZR is in active production status, making it suitable for ongoing procurement.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) and Digi-Reel® packaging are both surface mount formats suitable for automated assembly. Tape & Reel (TR) format is optimized for high-volume production runs with continuous reel feeding, while Cut Tape is suitable for lower-volume applications or mixed component assembly. Electrical specifications remain identical between packaging formats.

Q: Why would I select ADR5045BRTZ-REEL7 over the LM4040DIM3-5.0?

A: ADR5045BRTZ-REEL7 provides superior precision (±0.1% vs. ±1%), lower temperature coefficient (75 ppm/°C vs. 150 ppm/°C), and extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C). These specifications are required for applications demanding higher voltage reference accuracy or operation in elevated temperature environments. The part is in active production with substantial inventory.

Q: Is LM4040DIM3X-5.0 a suitable alternative?

A: Yes. LM4040DIM3X-5.0 maintains identical electrical and mechanical specifications to LM4040DIM3-5.0, including 5V output, 15 mA current, ±1% tolerance, and SOT-23-3 packaging. However, this part is Last Time Buy status with 7640 units in stock, indicating limited future availability. For new designs, LM4040DIM3-5.0/NOPB or LM4040D50IDBZR are preferred due to active production status.

Q: What compliance certifications apply to these parts?

A: All listed parts maintain ROHS3 compliance and MSL rating of 1 (Unlimited). LM4040AEM3-5.0+T includes AEC-Q100 automotive qualification, suitable for automotive-grade applications. Moisture sensitivity level 1 indicates no special storage or handling requirements.

Q: Can I use ZR40401F50TA as a drop-in replacement?

A: ZR40401F50TA is mechanically and electrically compatible with identical voltage output, current output, tolerance, and SOT-23-3 packaging. The improved temperature coefficient (100 ppm/°C) and lower cathode current (60 µA) represent performance enhancements. However, this part is Last Time Buy status, limiting its suitability for long-term production planning.

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