Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
4TCE330MI Panasonic	CAP TANT POLY 330UF 4V 2917	2029
20TQC47MYFT Panasonic	CAP TANT POLY 47UF 20V 2917	13297
16TQC33MYFS Panasonic	CAP TANT POLY 33UF 16V 2917	4500
10THB220M Panasonic	CAP TANT POLY 220UF 10V 2917	2767
4TPF680MAH Panasonic	CAP TANT POLY 680UF 4V 2917	3286
25TQC22MYFB Panasonic	CAP TANT POLY 22UF 25V 1411	2000
2R5TPE220MLB Panasonic	CAP TANT POLY 220UF 2.5V 1411	3380
6TCE470M Panasonic	CAP TANT POLY 470UF 6.3V 2917	1924
6TPE220MI Panasonic	CAP TANT POLY 220UF 6.3V 2917	0
2R5TAE470MF Panasonic	CAP TANT POLY 470UF 2.5V 2917	998
4TCE470MCL Panasonic	CAP TANT POLY 470UF 4V 2917	1881
6TPU33MSK Panasonic	CAP TANT POLY 33UF 6.3V	6409
6TPF220ML Panasonic	CAP TANT POLY 220UF 6.3V 2917	7903
6TPG100M Panasonic	CAP TANT POLY 100UF 6.3V 1411	30
10TCF150ML Panasonic	CAP TANT POLY 150UF 10V 2917	1240
2R5THE330MI Panasonic	CAP TANT POLY 330UF 2.5V 2917	2999
6TCE680M Panasonic	CAP TANT POLY 680UF 6.3V 2917	450
2R5TAE680ML Panasonic	CAP TANT POLY 680UF 2.5V 2917	4930
ETPE330MA9GB Panasonic	CAP TANT POLY 330UF 2.5V 1411	4364
6TCE470MI Panasonic	CAP TANT POLY 470UF 6.3V 2917	720

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.