LM4040BIM3-5.0 Equivalent & Substitute Parts

Part Overview

The LM4040BIM3-5.0 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision 5V fixed output applications. This Surface Mount device in SOT-23-3 package delivers 15 mA output current with ±0.2% tolerance and operates across -40°C to 85°C. The part is classified as Last Time Buy, indicating production discontinuation. Identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and applications requiring extended operating temperature ranges or improved performance specifications.

Key Parameters

Parameter	Value
Reference Type	Shunt
Output Type	Fixed
Voltage - Output	5V
Current - Output	15 mA
Tolerance	±0.2%
Temperature Coefficient	100 ppm/°C
Noise - 10Hz to 10kHz	80 µVrms
Current - Cathode	80 µA
Operating Temperature	-40°C ~ 85°C
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM4040BIM3-5.0 is determined by the following critical parameters:

Core Electrical Requirements:

Reference Type: Shunt
Output Voltage: 5V fixed
Output Current: 15 mA
Tolerance: ±0.2% or better
Package: SOT-23-3 (TO-236-3, SC-59)
Mounting: Surface Mount

Acceptable Variations:

Cathode Current: 80 µA to 95 µA (minor operational variance)
Temperature Coefficient: 100 ppm/°C or lower (improved stability acceptable)
Noise Performance: 80 µVrms or lower (improved noise acceptable)
Operating Temperature: -40°C to 85°C minimum; extended ranges acceptable
Packaging Format: Cut Tape (CT), Digi-Reel®, or Tape & Reel (TR) formats interchangeable

Substitution Categories:

Direct Manufacturer Equivalents maintain identical electrical specifications and differ only in packaging format or product status designation.

Parametric Equivalents share core electrical performance with minor variations in cathode current or packaging configuration, maintaining full functional compatibility.

Upgrade Parts offer enhanced specifications (extended temperature range, improved tolerance, lower noise) while maintaining backward compatibility.

Manufacturer Recommended Alternatives provide superior performance characteristics from alternative manufacturers, suitable for new designs or applications requiring enhanced specifications.

Parameter Comparison

Part Number	Manufacturer	Voltage Output	Current Output	Tolerance	Temp Coeff	Cathode Current	Operating Temp	Packaging	Product Status
LM4040BIM3-5.0	Texas Instruments	5V	15 mA	±0.2%	100 ppm/°C	80 µA	-40°C ~ 85°C	CT & Digi-Reel®	Last Time Buy
LM4040BIM3-5.0/NOPB	Texas Instruments	5V	15 mA	±0.2%	100 ppm/°C	80 µA	-40°C ~ 85°C	CT & Digi-Reel®	Active
LM4040B50IDBZR	Texas Instruments	5V	15 mA	±0.2%	100 ppm/°C	95 µA	-40°C ~ 85°C	CT & Digi-Reel®	Active
LM4040B50IDBZT	Texas Instruments	5V	15 mA	±0.2%	100 ppm/°C	95 µA	-40°C ~ 85°C	Tape & Reel (TR)	Active
LM4040BIM3X-5.0/NOPB	Texas Instruments	5V	15 mA	±0.2%	100 ppm/°C	80 µA	-40°C ~ 85°C	Tape & Reel (TR)	Active
LM4040B50FTA	Diodes Incorporated	5V	15 mA	±0.2%	100 ppm/°C	83 µA	-40°C ~ 125°C	Tape & Reel (TR)	Active
ADR5045ARTZ-R2	Analog Devices Inc.	5V	15 mA	±0.2%	100 ppm/°C	60 µA	-40°C ~ 125°C	-	Discontinued at DiGi Electronics
ADR5045ARTZ-REEL7	Analog Devices Inc.	5V	15 mA	±0.2%	100 ppm/°C	60 µA	-40°C ~ 125°C	Tape & Reel (TR)	Active
ADR5045BRTZ-REEL7	Analog Devices Inc.	5V	15 mA	±0.1%	75 ppm/°C	60 µA	-40°C ~ 125°C	CT & Digi-Reel®	Active
LM4040AEM3-5.0+T	Analog Devices Inc./Maxim Integrated	5V	15 mA	±0.1%	100 ppm/°C	80 µA	-40°C ~ 125°C	CT & Digi-Reel®	Active
LM4040AIM3-5.0+T	Analog Devices Inc./Maxim Integrated	5V	15 mA	±0.1%	100 ppm/°C	80 µA	-40°C ~ 85°C	Tape & Reel (TR)	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): Select LM4040BIM3-5.0/NOPB or LM4040BIM3X-5.0/NOPB. Both maintain the original electrical performance and operating temperature range. Choose based on packaging requirement: Cut Tape & Digi-Reel® for the /NOPB variant, or Tape & Reel (TR) for the X variant. Both are Active status parts with ROHS3 compliance and unlimited MSL rating.

For Extended Temperature Range Applications: LM4040B50FTA (Diodes Incorporated) extends operating temperature to -40°C ~ 125°C while maintaining ±0.2% tolerance and 15 mA output. Cathode current is 83 µA, within acceptable operational variance. This part is Active status with full ROHS3 compliance.

For Enhanced Precision Requirements: ADR5045BRTZ-REEL7 (Analog Devices Inc.) improves tolerance to ±0.1% and reduces temperature coefficient to 75 ppm/°C. Operating temperature extends to -40°C ~ 125°C. Cathode current is 60 µA, representing lower quiescent current draw. This part is Active status with ROHS3 compliance.

For High-Volume Production with Extended Temperature: ADR5045ARTZ-REEL7 (Analog Devices Inc.) offers 36,120 pieces in stock, maintains ±0.2% tolerance, and extends operating temperature to -40°C ~ 125°C. Cathode current is 60 µA. This part is Active status with ROHS3 compliance.

For Automotive-Grade Applications: LM4040AEM3-5.0+T (Analog Devices Inc./Maxim Integrated) carries AEC-Q100 qualification and Automotive grade designation. It improves tolerance to ±0.1%, extends operating temperature to -40°C ~ 125°C, and maintains 80 µA cathode current. This part is Active status with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can LM4040B50IDBZR replace LM4040BIM3-5.0 directly? A: Yes. Both parts maintain identical 5V output, 15 mA current, ±0.2% tolerance, and 100 ppm/°C temperature coefficient. The difference is cathode current (95 µA vs. 80 µA), which represents acceptable operational variance. Both operate -40°C ~ 85°C and use SOT-23-3 packaging. The primary distinction is packaging format: IDBZR uses Cut Tape & Digi-Reel®, while the original uses the same format.

Q: What is the difference between LM4040BIM3X-5.0/NOPB and LM4040BIM3-5.0/NOPB? A: Electrical specifications are identical. The difference is packaging format: LM4040BIM3X-5.0/NOPB is supplied in Tape & Reel (TR), while LM4040BIM3-5.0/NOPB is supplied in Cut Tape & Digi-Reel®. Both are Active status parts suitable for direct substitution.

Q: Why would I choose ADR5045ARTZ-REEL7 over LM4040BIM3-5.0? A: ADR5045ARTZ-REEL7 offers extended operating temperature (-40°C ~ 125°C vs. -40°C ~ 85°C), lower cathode current (60 µA vs. 80 µA), and significantly higher inventory availability (36,120 pieces). Electrical output specifications remain identical at 5V, 15 mA, ±0.2% tolerance.

Q: Is ADR5045BRTZ-REEL7 a better choice than the original part? A: ADR5045BRTZ-REEL7 offers improved specifications: ±0.1% tolerance (vs. ±0.2%), 75 ppm/°C temperature coefficient (vs. 100 ppm/°C), and extended operating temperature (-40°C ~ 125°C vs. -40°C ~ 85°C). These enhancements provide superior precision and stability. Selection depends on application requirements for tolerance and temperature performance.

Q: Can I use LM4040AEM3-5.0+T in automotive applications? A: Yes. LM4040AEM3-5.0+T carries AEC-Q100 qualification and Automotive grade designation, making it suitable for automotive applications. It also improves tolerance to ±0.1% and extends operating temperature to -40°C ~ 125°C compared to the original part.

Q: What does "Last Time Buy" status mean for LM4040BIM3-5.0? A: Last Time Buy indicates the manufacturer has discontinued production. Existing inventory may be available, but no future production is planned. Active status alternatives should be selected for new designs or long-term supply requirements.

Q: Are all substitute parts ROHS3 compliant? A: All listed substitute parts are ROHS3 compliant except ADR5045ARTZ-R2, which is discontinued at DiGi Electronics. All active parts maintain MSL rating of 1 (Unlimited).

Q: Does packaging format affect electrical performance? A: No. Cut Tape & Digi-Reel® and Tape & Reel (TR) formats contain identical die and electrical specifications. Format selection depends on assembly equipment and production volume requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message