Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T541X686M030BT8520 KEMET	CAP TANT POLY 68UF 30V 2917	0
T540B226K010DH8610 KEMET	CAP TANT POLY 22UF 10V 1411	0
6TPE150M Panasonic	CAP TANT POLY 150UF 6.3V 2917	766
TCQB226M010R0070E Elco (AVX)	CAP TANT POLY 22UF 10V 1411	1334
T541X108M004DT8505 KEMET	CAP TANT POLY 1000UF 4V 2917	0
M550B688M008AS KEMET	CAP TANT POLY 6800UF 8V CHAS MNT	0
TCJB157M006R0035E Elco (AVX)	CAP TANT POLY 150UF 6.3V 1411	880
M551B108M025AA KEMET	CAP TANT POLY 1000UF 25V CHAS MT	0
T540B336K006DH86107610 KEMET	CAP TANT POLY 33UF 6.3V 1411	0
T540D337K2R5AH8605WAFL KEMET	CAP TANT POLY 330UF 2.5V 2917	0
TCJD337M004R0040E Elco (AVX)	CAP TANT POLY 330UF 4V 2917	495
TCJD157M016R0040 Elco (AVX)	CAP TANT POLY 150UF 16V 2917	66
T540B336M006CH8610WAFL KEMET	CAP TANT POLY 33UF 6.3V 1411	0
T520C227M2R5ATE025 KEMET	CAP TANT POLY 220UF 2.5V 2312	660
M551B128K040AA KEMET	CAP TANT POLY 1200UF 40V CHAS MT	0
T540B476M006BH85107610 KEMET	CAP TANT POLY 47UF 6.3V 1411	0
T543X336M050AHE0407505 KEMET	CAP TANT POLY 33UF 50V 2917	14313
T543D685K063ATE075 KEMET	CAP TANT POLY 6.8UF 63V 2917	0
M550B108M025TT KEMET	CAP TANT POLY 1000UF 25V CHAS MT	0
TF08A226M016APE200 KEMET	CAP TANT POLY 22UF 16V 1206	2442

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.