Yageo KEMET T521X
T521X variants from Yageo KEMET
T521X Overview
What changes between part numbers, and what to check before you lock the BOM — Passive Components.
T521X is a Yageo order-code family — not a single orderable MPN. This page lists 10 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.
100uF 25V Tantalum Capacitor, 2917 SMD, 60mR ESR Other listed variants describe: 15uF 63V Tantalum Capacitor, 35mR ESR, 2917 SMD; 63V 22uF Tantalum Capacitor, Polarized, SMD.
Suffix examples in this family: 107M025ATE060, 156M063ATE035, 226M063ATE075, 227M016ATE035, 227M016ATE050, 336M050ATE050, 336M050ATE075, 337M016ATE050. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Example MPNs: T521X107M025ATE060, T521X156M063ATE035, T521X226M063ATE075, T521X227M016ATE035, T521X227M016ATE050, T521X336M050ATE050.
Key Features
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 10 distinct suffix patternsExamples: 107M025ATE060, 156M063ATE035, 226M063ATE075, 227M016ATE035, 227M016ATE050 (+5 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Passive Components — 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 10 T521X part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|
| T521X107M025ATE060 | 100uF 25V Tantalum Capacitor, 2917 SMD, 60mR ESR | Yageo KEMET | Active | Compliant | In Stock | |
| T521X156M063ATE035 | 15uF 63V Tantalum Capacitor, 35mR ESR, 2917 SMD | Yageo KEMET | Active | Compliant | In Stock | |
| T521X226M063ATE075 | 63V 22uF Tantalum Capacitor, Polarized, SMD | Yageo KEMET | Active | Compliant | In Stock | |
| T521X227M016ATE035 | 220uF 16V 35mR Tantalum Capacitor, SMD, 2917 | Yageo KEMET | Active | Compliant | In Stock | |
| T521X227M016ATE050 | Tantalum Capacitor, Polarized, Tantalum (solid Polymer), 16V, 20% +Tol, 20% -Tol, 220uF, Surface Mount, 2917, CHIP, HALOGEN FREE AND ROHS COMPLIANT | Yageo KEMET | Active | Compliant | In Stock | |
| T521X336M050ATE050 | 33uF 50V Tantalum Capacitor, SMD, Polymer | Yageo KEMET | Active | Compliant | In Stock | |
| T521X336M050ATE075 | 33uF 50V Tantalum Capacitor, SMD, 125C | Yageo KEMET | Active | Compliant | In Stock | |
| T521X337M016ATE050 | 330uF 16V Tantalum Capacitor, 20% Tol, 50mR ESR, SMD | Yageo KEMET | Active | Compliant | In Stock | |
| T521X476M035ATE030 | 47uF 35V Tantalum Capacitor, 20% Tol, 30mR ESR, 2917 SMD | Yageo KEMET | Active | Compliant | In Stock | |
| T521X476M035ATE070 | 47uF 35V Tantalum Capacitor, 20% Tol, 70mR ESR, 2917 SMD | Yageo KEMET | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on T521X map to package, grade, and reel options.
T521X 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: 107M025ATE060, 156M063ATE035, 226M063ATE075, 227M016ATE035, 227M016ATE050, 336M050ATE050, 336M050ATE075, 337M016ATE050, 476M035ATE030, 476M035ATE070.
Full MPN examples: T521X107M025ATE060, T521X156M063ATE035, T521X226M063ATE075, T521X227M016ATE035, T521X227M016ATE050.
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 T521X Passive Components
Match the footprint first
Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.
Electrical headroom
Compare voltage and current columns in the variant table. For T521X, 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 "T521X" — include the full suffix (e.g. 107M025ATE060, 156M063ATE035, 226M063ATE075). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for T521X product family
Identity
Variant Parameters
Source T521X with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 10 ordering variants from Yageo. 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 T521X product family.