Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T543X336K050ATW040 KEMET	CAP TANT POLY 33UF 50V 2917	0
T598B226M010AHE070 KEMET	CAP TANT POLY 22UF 10V 1411	0
T525D337M006ATE025 KEMET	CAP TANT POLY 330UF 6.3V 2917	2160
13030-02KASLT KEMET	CAP TANT POLY 100UF 40V AXIAL	0
T541X476K035CT8510 KEMET	CAP TANT POLY 47UF 35V 2917	0
T540D337K003CH8505 KEMET	CAP TANT POLY 330UF 3V 2917	0
T540D156K025AH8510 KEMET	CAP TANT POLY 15UF 25V 2917	0
TCJB336M006R0200E Elco (AVX)	CAP TANT POLY 33UF 6.3V 1411	0
TCME687M004R0010E Elco (AVX)	CAP TANT POLY 680UF 4V 2917	0
T556B687K008AT KEMET	CAP TANT POLY 680UF 8V SMD	0
T550B256M100AT KEMET	CAP TANT POLY 25UF 100V AXIAL	0
T541X686K025BH8610 KEMET	CAP TANT POLY 68UF 25V 2917	0
T541X157M016DT8710 KEMET	CAP TANT POLY 150UF 16V 2917	0
TCJD476M025R0060E Elco (AVX)	CAP TANT POLY 47UF 25V 2917	909
T540B686M006DH8510 KEMET	CAP TANT POLY 68UF 6.3V 1411	0
10TPB330M Panasonic	CAP TANT POLY 330UF 10V 2917	759
M551B568M010AT KEMET	CAP TANT POLY 5600UF 10V CHAS MT	0
T550B107K040AH KEMET	CAP TANT POLY 100UF 40V AXIAL	0
T540D687M2R5BH8605WAFL KEMET	CAP TANT POLY 680UF 2.5V 2917	0
T520Y687M004ATE015 KEMET	CAP TANT POLY 680UF 4V 2917	666

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.