Analog Devices LTC4121EUD
LTC4121EUD variants from Analog Devices
LTC4121EUD Overview
What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.
Key Features
- Footprint / package: 16-WFQFN Exposed PadSingle 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.
- 2 distinct suffix patternsExamples: #PBF, 4.2#PBF. Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Microcontrollers — 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 LTC4121EUD 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 |
|---|---|---|---|---|---|---|---|
| LTC4121EUD#PBF | IC BATT CHG MULTI-CHEM 16QFN | - | Analog Devices | Active | Compliant | In Stock | |
| LTC4121EUD-4.2#PBF | Package: 16-WFQFN Exposed Pad | Mounting Type: Surface Mount | Operating Temperature: -40°C ~ 125°C (TJ) | Battery Chemistry: Lithium Ion/Polymer | Charge Current Max: 400mA | Supplier Device Package: 16-QFN (3x3) | 16-WFQFN Exposed Pad | Analog Devices | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on LTC4121EUD map to package, grade, and reel options.
How to Choose the Right LTC4121EUD Microcontrollers
Match the footprint first
Packages here: 16-WFQFN Exposed Pad. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For LTC4121EUD, 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 "LTC4121EUD" — include the full suffix (e.g. #PBF, 4.2#PBF). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for LTC4121EUD product family
Identity
Variant Parameters
Source LTC4121EUD with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 2 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 LTC4121EUD product family.