Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T55A226M2R5C0180 Vishay / Sprague	CAP TANT POLY 22UF 2.5V 1206	0
T55T476M6R3C0080 Vishay / Sprague	CAP TANT POLY 47UF 6.3V 1411	0
T55B227M6R3C0070 Vishay / Sprague	CAP TANT POLY 220UF 6.3V 1411	0
T54EE226M063ESA100 Vishay / Sprague	CAP TANT POLY 22UF 63V 2917	501
T55D477M004C0012 Vishay / Sprague	CAP TANT POLY 470UF 4V 2917	350
T55B476M6R3C0040 Vishay / Sprague	CAP TANT POLY 47UF 6.3V 1411	3755
T55Z107M016C0050 Vishay / Sprague	CAP TANT POLY 100UF 16V 2917	800
T55D337M010C0007 Vishay / Sprague	CAP TANT POLY 330UF 10V 2917	464
T55B476M010C0150 Vishay / Sprague	CAP TANT POLY 47UF 10V 1411	713
T55A106M010C0200 Vishay / Sprague	CAP TANT POLY 10UF 10V 1206	4157
T55A106M004C0200 Vishay / Sprague	CAP TANT POLY 10UF 4V 1206	1524
T55A106M010C0500 Vishay / Sprague	CAP TANT POLY 10UF 10V 1206	1950
T58W9476M6R3C0200 Vishay / Sprague	CAP TANT POLY 47UF 6.3V 0805	2344
T55D227M6R3C0025 Vishay / Sprague	CAP TANT POLY 220UF 6.3V 2917	0
T55D227M6R3C0009 Vishay / Sprague	CAP TANT POLY 220UF 6.3V 2917	500
T55B106M016C0100 Vishay / Sprague	CAP TANT POLY 10UF 16V 1411	238
T55Z157M004C0025 Vishay / Sprague	CAP TANT POLY 150UF 4V 2917	800
T55B685M025C0100 Vishay / Sprague	CAP TANT POLY 6.8UF 25V 1411	0
T52E5476M035C0055 Vishay / Sprague	CAP TANT POLY 47UF 35V 2917	6570
T55D108M2R5C0009 Vishay / Sprague	CAP TANT POLY 1000UF 2.5V 2917	500

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.