Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
TCJH476M010R0100E Elco (AVX)	CAP TANT POLY 47UF 10V 1411	4937
TCNO106M016R0500 Elco (AVX)	CAP TANT POLY 10UF 16V 1206	309
T540D337K006CH87107280 KEMET	CAP TANT POLY 330UF 6.3V 2917	0
T520B336M010ATE025 KEMET	CAP TANT POLY 33UF 10V 1411	0
T550B127M040AH KEMET	CAP TANT POLY 120UF 40V AXIAL	0
T551B396K060AH4251 KEMET	CAP TANT POLY 39UF 60V AXIAL	0
T540B107M003BH8710WAFL KEMET	CAP TANT POLY 100UF 3V 1411	0
T541X107M030BH8620 KEMET	CAP TANT POLY 100UF 30V 2917	0
25TDC15MYFB Panasonic	CAP TANT POLY 15UF 25V 1411	3220
M550B108K060BG KEMET	CAP TANT POLY 1000UF 60V CHAS MT	0
TCJD337M006R0050 Elco (AVX)	CAP TANT POLY 330UF 6.3V 2917	0
M551B507K060AS KEMET	CAP TANT POLY 500UF 60V CHAS MNT	0
T520V477M002ATE040 KEMET	CAP TANT POLY 470UF 2V 2917	0
T598B686M006AHE070 KEMET	CAP TANT POLY 68UF 6.3V 1411	0
T521V156M025AHE0407280 KEMET	CAP TANT POLY 15UF 25V 2917	0
T520C107M006AHE045 KEMET	CAP TANT POLY 100UF 6.3V 2312	0
T540B476M006DH8710WAFL KEMET	CAP TANT POLY 47UF 6.3V 1411	0
T598D337M006AHS080 KEMET	CAP TANT POLY 330UF 6.3V 2917	0
T521B106M035ATE200 KEMET	CAP TANT POLY 10UF 35V 1411	1992
T540D477M2R5AH8505 KEMET	CAP TANT POLY 470UF 2.5V 2917	0

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.