Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T55B226M010C0300 Vishay / Sprague	CAP TANT POLY 22UF 10V 1411	0
T55B477M2R5C0025 Vishay / Sprague	CAP TANT POLY 470UF 2.5V 1411	1826
T55A686M004C0200 Vishay / Sprague	CAP TANT POLY 68UF 4V 1206	28
T55B226M016C0070 Vishay / Sprague	CAP TANT POLY 22UF 16V 1411	3461
T55B686M004C0150 Vishay / Sprague	CAP TANT POLY 68UF 4V 1411	0
T55B686M2R5C0070 Vishay / Sprague	CAP TANT POLY 68UF 2.5V 1411	0
T55T336M010C0200 Vishay / Sprague	CAP TANT POLY 33UF 10V 1411	0
T55B685M035C0200 Vishay / Sprague	CAP TANT POLY 6.8UF 35V 1411	40
T58A0107M6R3C0150 Vishay / Sprague	CAP TANT POLY 100UF 6.3V 1206	0
T55T336M010C0150 Vishay / Sprague	CAP TANT POLY 33UF 10V 1411	0
T55B107M6R3C0035 Vishay / Sprague	CAP TANT POLY 100UF 6.3V 1411	16
T55B476M004C0070 Vishay / Sprague	CAP TANT POLY 47UF 4V 1411	1990
T55J475M6R3C0500 Vishay / Sprague	CAP TANT POLY 4.7UF 6.3V 0603	3187
T58W9105M035C0500 Vishay / Sprague	CAP TANT POLY 1UF 35V 0805	5329
T55B157M004C0035 Vishay / Sprague	CAP TANT POLY 150UF 4V 1411	0
T55B227M004C0070 Vishay / Sprague	CAP TANT POLY 220UF 4V 1411	688
T55D227M010C0018 Vishay / Sprague	CAP TANT POLY 220UF 10V 2917	305
T55D337M004C0009 Vishay / Sprague	CAP TANT POLY 330UF 4V 2917	500
T55P685M6R3C0500 Vishay / Sprague	CAP TANT POLY 6.8UF 6.3V 0805	1520
T55D477M6R3C0015 Vishay / Sprague	CAP TANT POLY 470UF 6.3V 2917	497

Tantalum - Polymer Capacitors

1. Overview

Tantalum polymer capacitors are a type of electrolytic capacitor utilizing conductive polymer as the electrolyte and tantalum metal as the anode. Compared to traditional liquid-electrolyte tantalum capacitors, they offer lower equivalent series resistance (ESR), higher thermal stability, and longer operational lifespan. Their ability to deliver stable capacitance in compact packages makes them critical components in modern electronics for power management, noise filtering, and energy storage.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Solid Polymer Electrolyte	Ultra-low ESR (<10m ), high ripple current tolerance	High-frequency DC-DC converters
Hybrid Polymer-Electrolyte	Combines polymer and liquid electrolyte for cost-performance balance	Consumer electronics power supplies
High-Voltage Polymer	Rated voltage >25V with enhanced dielectric strength	Industrial motor drives

3. Structure and Composition

Typical construction includes:

Anode: Sintered tantalum pellet with porous structure
Dielectric: Thin Ta₂O₅ layer formed via anodization
Electrolyte: Conductive polymer (e.g., PEDOT:PSS) coating
Cathode: Graphite/silver layered termination

The porous anode structure maximizes surface area while the polymer electrolyte provides solid-state reliability.

4. Key Technical Specifications

Parameter	Significance
Capacitance Range: 10 F - 1000 F	Determines energy storage capacity
Rated Voltage: 2.5V - 50V	Defines maximum operational voltage
ESR: <20m typical	Impacts power efficiency and thermal performance
Leakage Current: <0.01C*V	Affects battery-powered device standby consumption
Operating Temperature: -55 C to +125 C	Ensures reliability in harsh environments

5. Application Fields

Consumer Electronics: Smartphone power management modules
Automotive: Engine control units (ECUs) and ADAS systems
Industrial: Programmable logic controllers (PLCs)
Medical: Portable diagnostic equipment power filtering
Telecom: 5G base station RF amplifiers

6. Leading Manufacturers and Products

Manufacturer	Product Series	Key Features
Vishay	T55 Series	2000 hours life at 105 C
AVX	TACMIC	Military-grade vibration resistance
KEMET	A700 Series	Automotive AEC-Q200 qualified

7. Selection Guidelines

Key considerations:

Capacitance-voltage (CV) product must exceed circuit requirements by 20%
ESR requirements for high-frequency noise suppression
Package size constraints (e.g., 3216 vs 7343)
Temperature derating: Reduce rated voltage by 30% at 125 C
Failure mode analysis for safety-critical applications

8. Industry Trends

Emerging developments include:

Nano-structured polymer electrolytes enabling 30% higher capacitance density
Low-flammability materials for EV battery management systems
Embedded capacitor technology for 5G RF modules
AI-driven accelerated life testing methods

Market demand is projected to grow at 6.2% CAGR through 2030, driven by automotive electrification and IoT device proliferation.