Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
M550B507K050BH KEMET	CAP TANT POLY 500UF 50V CHAS MNT	0
T540D226M025AH8605 KEMET	CAP TANT POLY 22UF 25V 2917	0
T540D156M0DT8610 KEMET	CAP TANT POLY 15UF 2917	0
T540B336M006AH8610 KEMET	CAP TANT POLY 33UF 6.3V 1411	0
T541X108K004DT8605 KEMET	CAP TANT POLY 1000UF 4V 2917	0
T541X477M010BH8510 KEMET	CAP TANT POLY 470UF 10V 2917	0
T541X107K030CH8520 KEMET	CAP TANT POLY 100UF 30V 2917	0
TCJE336M035R0070E Elco (AVX)	CAP TANT POLY 33UF 35V 2917	0
T55T226M6R3C0070 Vishay / Sprague	CAP TANT POLY 22UF 6.3V 1411	2455
T540D107M016AH8505 KEMET	CAP TANT POLY 100UF 16V 2917	0
T541X477M006CT8505 KEMET	CAP TANT POLY 470UF 6.3V 2917	0
M550B128K040BG KEMET	CAP TANT POLY 1200UF 40V CHAS MT	0
T555B686K030AH KEMET	CAP TANT POLY 68UF 30V SMD	0
T521B335M035ATE2007280 KEMET	CAP TANT POLY 3.3UF 35V 1411	0
13030-03KASLB KEMET	CAP TANT POLY 120UF 40V AXIAL	0
T55B336M010C0070 Vishay / Sprague	CAP TANT POLY 33UF 10V 1411	439
T541X107K0CT8510 KEMET	CAP TANT POLY 100UF 2917	0
T551B147M006AH KEMET	CAP TANT POLY 140UF 6.3V AXIAL	0
T540D337K004CH8705WAFL KEMET	CAP TANT POLY 330UF 4V 2917	0
TCJE106M063R0100E Elco (AVX)	CAP TANT POLY 10UF 63V 2917	288

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.