Analog Devices LM4040
LM4040 variants from Analog Devices
LM4040 Overview
What changes between part numbers, and what to check before you lock the BOM — Voltage References.
Key Features
- Footprint / package: TO-236-3, SC-59, SOT-23-3, SC-70, SOT-323Land pattern and thermal pad differ between these packages — run a quick footprint check before you swap variants.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 5 distinct suffix patternsExamples: AEM3-3.0+T, AIM3-2.1+T, BEX3-5.0+T, DEM3-2.5+T, DIX3-2.5+T. Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Voltage References — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 5 LM4040 part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| LM4040AEM3-3.0+T | Package: TO-236-3, SC-59, SOT-23-3 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 125°C (TA) | Tolerance: ±0.1% | Temperature Coefficient: 100ppm/°C | Output Type: Fixed | TO-236-3, SC-59, SOT-23-3 | Analog Devices | Active | Compliant | In Stock | |
| LM4040AIM3-2.1+T | Package: TO-236-3, SC-59, SOT-23-3 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 85°C (TA) | Tolerance: ±0.1% | Temperature Coefficient: 100ppm/°C | Output Type: Fixed | TO-236-3, SC-59, SOT-23-3 | Analog Devices | Active | Compliant | In Stock | |
| LM4040BEX3-5.0+T | Package: SC-70, SOT-323 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 125°C (TA) | Tolerance: ±0.2% | Temperature Coefficient: 100ppm/°C | Output Type: Fixed | SC-70, SOT-323 | Analog Devices | Active | Compliant | In Stock | |
| LM4040DEM3-2.5+T | Package: TO-236-3, SC-59, SOT-23-3 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 125°C (TA) | Tolerance: ±1% | Temperature Coefficient: 150ppm/°C | Output Type: Fixed | TO-236-3, SC-59, SOT-23-3 | Analog Devices | Active | Compliant | In Stock | |
| LM4040DIX3-2.5+T | Package: SC-70, SOT-323 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 85°C (TA) | Tolerance: ±1% | Temperature Coefficient: 150ppm/°C | Output Type: Fixed | SC-70, SOT-323 | Analog Devices | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LM4040 map to package, grade, and reel options.
How to Choose the Right LM4040 Voltage References
Match the footprint first
Packages here: TO-236-3, SC-59, SOT-23-3, SC-70, SOT-323. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For LM4040, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "LM4040" — include the full suffix (e.g. AEM3-3.0+T, AIM3-2.1+T, BEX3-5.0+T). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LM4040 product family
Identity
Variant Parameters
Source LM4040 with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 5 ordering variants from Analog Devices. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the LM4040 product family.
Related Base Numbers
Related Series
Explore product families linked to this base-number page.