Yageo KEMET T491B

T491B variants from Yageo KEMET

Variants

Mfr

Yageo

Lifecycle

Active

T491B Overview

What changes between part numbers, and what to check before you lock the BOM — Passive Components.

T491B is a Yageo order-code family — not a single orderable MPN. This page lists 56 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.

1uF 25V Tantalum Capacitor, 10% Tol, SMD, 1411 Case Other listed variants describe: Tantalum Capacitor 1uF 35V 20% 3528 SMD 5R 125C; 1uF 50V Tantalum Capacitor, 10% Tol, SMD, 1411 Case.

Suffix examples in this family: 105K025AT, 105K035AT, 105K050AT, 105M035AT, 106K010AT, 106K016AT, 106K016AT7280, 106K016AT7634. 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: T491B105K025AT, T491B105K035AT, T491B105K050AT, T491B105M035AT, T491B106K010AT, T491B106K016AT.

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
56 distinct suffix patternsExamples: 105K025AT, 105K035AT, 105K050AT, 105M035AT, 106K010AT (+51 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 56 T491B 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
T491B105K025AT	1uF 25V Tantalum Capacitor, 10% Tol, SMD, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B105K035AT	Tantalum Capacitor 1uF 35V 20% 3528 SMD 5R 125C	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B105K050AT	1uF 50V Tantalum Capacitor, 10% Tol, SMD, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B105M035AT	1uF 35V Tantalum Capacitor, SMD, 20% Tol	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106K010AT	10uF 10V Tantalum Capacitor, 3528 SMD, 10% Tol, 3.5R ESR	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106K016AT	Tantalum Capacitor 10uF 16V 10% SMD 3528 2.8R 125C T/R	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106K016AT7280	10uF 16V 10% Solid Tantalum Capacitor SMD 3528 2R 125C	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106K016AT7634	Standard MnO2 Tantalum Surface Mount Capacitors	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106K020AT	10uF 20V Tantalum Capacitor, 10% Tol, SMD, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106K025AT	10uF 25V Tantalum Capacitor, SMD, 10% Tol, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106M010AT	10uF 10V Tantalum Capacitor, SMD, 20% Tol, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106M016AT	10uF 16V Tantalum Capacitor, SMD, 20% Tol, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B106M020AT	10uF 20V Tantalum Capacitor, SMD, 20% Tol, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B107K006AT	Tantalum Capacitor 100uF 6.3V 10% SMD 125C	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B107K010AT	Cap Tant Solid 100uF 10V B CASE 10% (3.5 X 2.8 X 1.9mm) Inward L SMD 3528-21 1.2 Ohm 125°C T/R	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B107M010AT	100uF 10V Tantalum Capacitor, SMD, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B155K025AT	1.5uF 25V Tantalum Capacitor, 10% Tol, SMD, 1411 Case	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B155K035AT	Tantalum Cap 1.5uF 35V 10% SMD 3528 5R 125C	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B156K010AT	Tantalum Capacitor 15uF 10V 10% SMD 3528 2.8R 125C	Yageo KEMET	Active	Compliant	In Stock	RFQ
T491B156K016AT	Tantalum Capacitor 15uF 16V 10% SMD 3528 2.5R 125C	Yageo KEMET	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on T491B map to package, grade, and reel options.

T491B 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: 105K025AT, 105K035AT, 105K050AT, 105M035AT, 106K010AT, 106K016AT, 106K016AT7280, 106K016AT7634, 106K020AT, 106K025AT (+46 more).

Full MPN examples: T491B105K025AT, T491B105K035AT, T491B105K050AT, T491B105M035AT, T491B106K010AT.

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 T491B 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 T491B, 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 "T491B" — include the full suffix (e.g. 105K025AT, 105K035AT, 105K050AT). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for T491B product family

Identity

Base Model

T491B

Manufacturer

Yageo

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source T491B with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 56 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

Request Quote View Yageo Browse all base models →

Frequently Asked Questions

Common technical questions about the T491B product family.

Is T491B a single part I can order, or a family prefix?

T491B is a base / family code from Yageo. You order a full MPN such as T491B105K025AT, T491B105K035AT, T491B105K050AT. The variant table lists 56 orderable lines with different suffixes.

What do the suffix letters on T491B part numbers mean?

Listed suffix fragments include: 105K025AT, 105K035AT, 105K050AT, 105M035AT, 106K010AT, 106K016AT. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the Yageo datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of T491B variants?

Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.

What should I send for an RFQ on T491B?

Full manufacturer MPN (not just T491B), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.