Texas Instruments LM321MF
LM321MF variants from Texas Instruments
LM321MF Overview
What changes between part numbers, and what to check before you lock the BOM — Operational Amplifiers, Instrumentation Amplifiers and Buffer Amplifiers.
LM321MF is a Texas Instruments order-code family — not a single orderable MPN. This page lists 2 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
Package: SC-74A, SOT-753 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 85°C | Current Supply: 660µA | Supplier Device Package: SOT-23-5 | Number of Circuits: 1 Other listed variants describe: 1MHz Op Amp, Single, SOT-23-5, 1.5-30V, 85C.
Across listed variants, watch these parameters: packages: SC-74A, SOT-753.
Example MPNs: LM321MF, LM321MF/NOPB.
Key Features
- Footprint / package: SC-74A, SOT-753Single 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.
Target Applications
- Operational Amplifiers, Instrumentation Amplifiers and Buffer Amplifiers — 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 2 LM321MF 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 |
|---|---|---|---|---|---|---|---|
| LM321MF | Package: SC-74A, SOT-753 | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 85°C | Current Supply: 660µA | Supplier Device Package: SOT-23-5 | Number of Circuits: 1 | SC-74A, SOT-753 | Texas Instruments | Active | Compliant | In Stock | |
| LM321MF/NOPB | 1MHz Op Amp, Single, SOT-23-5, 1.5-30V, 85C | - | Texas Instruments | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LM321MF map to package, grade, and reel options.
LM321MF uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: NOPB.
Full MPN examples: LM321MF/NOPB.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right LM321MF Operational Amplifiers, Instrumentation Amplifiers and Buffer Amplifiers
Match the footprint first
Packages here: 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 LM321MF, 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 "LM321MF" — include the full suffix (e.g. NOPB). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LM321MF product family
Identity
Variant Parameters
Source LM321MF with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 2 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 LM321MF product family.