Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T550B107M060AT0100 KEMET	CAP TANT POLY 100UF 60V AXIAL	0
T540D156K035BT8510 KEMET	CAP TANT POLY 15UF 35V 2917	0
T540D157K006CH87057280 KEMET	CAP TANT POLY 150UF 6.3V 2917	0
T541X687M004CH8605 KEMET	CAP TANT POLY 680UF 4V 2917	0
4TPE220M Panasonic	CAP TANT POLY 220UF 4V 2917	116
T540D336K025DH8605 KEMET	CAP TANT POLY 33UF 25V 2917	0
T521V107M016ATE040 KEMET	CAP TANT POLY 100UF 16V 2917	0
T598D107M010AHE025 KEMET	CAP TANT POLY 100UF 10V 2917	0
T540B476K006DH86107280 KEMET	CAP TANT POLY 47UF 6.3V 1411	0
T541X108K003BT8605 KEMET	CAP TANT POLY 1000UF 3V 2917	0
TCQB106M020R0150E Elco (AVX)	CAP TANT POLY 10UF 20V 1411	680
M551B607K050AT KEMET	CAP TANT POLY 600UF 50V CHAS MNT	0
T55D337M010C0018 Vishay / Sprague	CAP TANT POLY 330UF 10V 2917	3962
T541X337K016AT8720 KEMET	CAP TANT POLY 330UF 16V 2917	0
T541X686M0CT8610 KEMET	CAP TANT POLY 68UF 2917	0
T520W227M004ATE040 KEMET	CAP TANT POLY 220UF 4V 2917	0
T550B107M060BH0100 KEMET	CAP TANT POLY 100UF 60V AXIAL	0
T556B256K050AH KEMET	CAP TANT POLY 25UF 50V SMD	0
TCJC685M035R0200E Elco (AVX)	CAP TANT POLY 6.8UF 35V 2312	0
T520B107M006ATE018 KEMET	CAP TANT POLY 100UF 6.3V 1411	9519

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.