Texas Instruments LM4040A
LM4040A variants from Texas Instruments
LM4040A Overview
What changes between part numbers, and what to check before you lock the BOM — Voltage References.
Key Features
- Footprint / package: SOT-23-3Single package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 11 distinct suffix patternsExamples: 41IDBZT, 10IDBZT, 10IDCKR, 20IDBZT, 25IDBZR (+6 more). 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 11 LM4040A 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 |
|---|---|---|---|---|---|---|---|
| LM4040A41IDBZT | Package: SOT-23-3 | Output Voltage: 4.096V | Output Current: 15mA | Max Output Current: 15mA | Number of Channels: 1 | Max Operating Temp: 125°C | Min Operating Temp: -40°C | SOT-23-3 | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A10IDBZT | Fixed voltage, 45-µA, precision micropower shunt voltage reference 3-SOT-23 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A10IDCKR | Fixed voltage, 45-µA, precision micropower shunt voltage reference 5-SC70 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A20IDBZT | 2.048V Shunt Voltage Reference, 0.1% Tol, SOT-23 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A25IDBZR | Fixed voltage, 45-µA, precision micropower shunt voltage reference 3-SOT-23 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A25IDBZT | 2.5V Shunt Voltage Reference, 0.1% Tol, SOT-23 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A30IDBZR | Fixed voltage, 45-µA, precision micropower shunt voltage reference 3-SOT-23 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A50IDCKR | Fixed voltage, 45-µA, precision micropower shunt voltage reference 5-SC70 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A82IDBZR | Fixed voltage, 45-µA, precision micropower shunt voltage reference 3-SOT-23 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A82IDBZT | Fixed voltage, 45-µA, precision micropower shunt voltage reference 3-SOT-23 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4040A82IDCKR | Fixed voltage, 45-µA, precision micropower shunt voltage reference 5-SC70 -40 to 85 | - | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LM4040A map to package, grade, and reel options.
How to Choose the Right LM4040A Voltage References
Match the footprint first
Packages here: SOT-23-3. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For LM4040A, 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 "LM4040A" — include the full suffix (e.g. 41IDBZT, 10IDBZT, 10IDCKR). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LM4040A product family
Identity
Variant Parameters
Source LM4040A with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 11 ordering variants from Texas Instruments. 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 LM4040A product family.