Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T55A476M6R3C0200 Vishay / Sprague	CAP TANT POLY 47UF 6.3V 1206	2778
T55A107M007C0070 Vishay / Sprague	CAP TANT POLY 100UF 7V 1206	1329
T59EE477M016C0025 Vishay / Sprague	CAP TANT POLY 470UF 16V 2917	768
T55D337M6R3C0025 Vishay / Sprague	CAP TANT POLY 330UF 6.3V 2917	190
T55B227M2R5C0030 Vishay / Sprague	CAP TANT POLY 220UF 2.5V 1411	1950
T55A336M010C0500 Vishay / Sprague	CAP TANT POLY 33UF 10V 1206	1825
T55T156M12RC0080 Vishay / Sprague	CAP TANT POLY 15UF 12.5V 1411	2477
T56D227M010CSA025 Vishay / Sprague	CAP TANT POLY 220UF 10V 2917	500
T55D227M010C0007 Vishay / Sprague	CAP TANT POLY 220UF 10V 2917	424
T55D687M004C0009 Vishay / Sprague	CAP TANT POLY 680UF 4V 2917	300
T55D337M2R5C0007 Vishay / Sprague	CAP TANT POLY 330UF 2.5V 2917	500
T56D336M025CSA060 Vishay / Sprague	CAP TANT POLY 33UF 25V 2917	500
T54EE476M035ESA070 Vishay / Sprague	CAP TANT POLY 47UF 35V 2917	395
T55V337M6R3C0018 Vishay / Sprague	CAP TANT POLY 330UF 6.3V 2917	0
T56D337M010CSA025 Vishay / Sprague	CAP TANT POLY 330UF 10V 2917	444
T54EE227M016ESA025 Vishay / Sprague	CAP TANT POLY 220UF 16V 2917	381
T55D337M010C0025 Vishay / Sprague	CAP TANT POLY 330UF 10V 2917	505
T55D227M010C0009 Vishay / Sprague	CAP TANT POLY 220UF 10V 2917	382
T55D477M6R3C0008 Vishay / Sprague	CAP TANT POLY 470UF 6.3V 2917	426
T55D687M2R5C0009 Vishay / Sprague	CAP TANT POLY 680UF 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.