Texas Instruments LM4128DQ
LM4128DQ variants from Texas Instruments
LM4128DQ Overview
What changes between part numbers, and what to check before you lock the BOM — Voltage References.
Key Features
- Footprint / package: SOT-23, SC-74A, SOT-753Land 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.
- 8 distinct suffix patternsExamples: 1MF3.3/NOPB, 1MF1.8/NOPB, 1MF2.5/NOPB, 1MF3.0/NOPB, 1MFX1.8/NOPB (+3 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 8 LM4128DQ 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 |
|---|---|---|---|---|---|---|---|
| LM4128DQ1MF3.3/NOPB | Package: SOT-23 | Output Voltage: 3.3V | Output Current: 20mA | Max Output Current: 20mA | Max Input Voltage: 6V | Number of Channels: 1 | Max Operating Temp: 125°C | Min Operating Temp: -40°C | SOT-23 | Texas Instruments | Active | Compliant | In Stock | |
| LM4128DQ1MF1.8/NOPB | 1.8V Series Voltage Reference, 1% Tol, 20mA, SOT-23, -40 to 125C | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4128DQ1MF2.5/NOPB | Automotive 0.1% 75-ppm/°C SOT-23 precision micropower series voltage reference shutdown enable pin 5-SOT-23 -40 to 125 | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4128DQ1MF3.0/NOPB | 3V Series Voltage Reference, 0.1% Tol, SOT-23, 20mA, -40-125C | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4128DQ1MFX1.8/NOPB | 1.8V Fixed VREF IC, 20mA, 1% Tol, SOT-23, SM | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4128DQ1MFX2.5/NOPB | 2.5V Precision Voltage Reference IC, SOT-23, 20mA, 1% Tol | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4128DQ1MFX3.3/NOPB | 3.3V Precision Voltage Reference IC, SOT-23, 20mA | - | Texas Instruments | Active | Compliant | In Stock | |
| LM4128DQ1MF2.0/NOPB | Package: SC-74A, SOT-753 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 125°C (TJ) | Tolerance: ±1% | Temperature Coefficient: 100ppm/°C | Current Supply: 100µA | SC-74A, SOT-753 | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LM4128DQ map to package, grade, and reel options.
How to Choose the Right LM4128DQ Voltage References
Match the footprint first
Packages here: SOT-23, SC-74A, SOT-753. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For LM4128DQ, 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 "LM4128DQ" — include the full suffix (e.g. 1MF3.3/NOPB, 1MF1.8/NOPB, 1MF2.5/NOPB). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LM4128DQ product family
Identity
Variant Parameters
Source LM4128DQ with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 8 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 LM4128DQ product family.
Related Base Numbers
Related Series
Explore product families linked to this base-number page.