Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
4TPU68MSI Panasonic	CAP TANT POLY 68UF 4V 0805	2730
20TQC8R2M Panasonic	CAP TANT POLY 8.2UF 20V 1411	6575
4THE220MI Panasonic	CAP TANT POLY 220UF 4V 2917	3000
25TQC15MYFD Panasonic	CAP TANT POLY 15UF 25V 2917	4318
2R5TPF470ML Panasonic	CAP TANT POLY 470UF 2.5V 2917	7254
16TQC47MYFB Panasonic	CAP TANT POLY 47UF 16V 1411	0
6TPE470MI Panasonic	CAP TANT POLY 470UF 6.3V 2917	1767
2R5TPE1000MF Panasonic	CAP TANT POLY 1000UF 2.5V 2917	1421
6TPE100MI Panasonic	CAP TANT POLY 100UF 6.3V 2917	1652
4THE220MF Panasonic	CAP TANT POLY 220UF 4V 2917	3000
6TPG150MZG Panasonic	CAP TANT POLY 150UF 6.3V 1411	2203
6TPB470M Panasonic	CAP TANT POLY 470UF 6.3V 2917	0
20TQC47MYF Panasonic	CAP TANT POLY 47UF 20V 2917	9
4TPE100MZB Panasonic	CAP TANT POLY 100UF 4V 1411	265
6THE150M Panasonic	CAP TANT POLY 150UF 6.3V 2917	2490
4TCE220MF Panasonic	CAP TANT POLY 220UF 4V 2917	5590
35TQS47MEU Panasonic	CAP TANT POLY 47UF 35V 2917	3805
6TPE150MAZB Panasonic	CAP TANT POLY 150UF 6.3V 1411	2000
2R5TPE470M9 Panasonic	CAP TANT POLY 470UF 2.5V 2917	140
2R5TPG220MUG Panasonic	CAP TANT POLY 220UF 2.5V 1411	4718

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.