Tantalum - Polymer Capacitors

Image	Part Number	Description / PDF	Quantity	Rfq
	TCJD227M004R0012 Elco (AVX)	CAP TANT POLYMER	0
	TCJY476M020S0070 Elco (AVX)	CAP TANT POLYMER	0
	TCRD106M050R0120J Elco (AVX)	CAP TANT	0
	TCH9336M075W0120U Elco (AVX)	CAP TANT POLYMER	0
	TCME337M010S0015 Elco (AVX)	CAP TANT POLYMER	0
	TCJY337M006S0050 Elco (AVX)	CAP TANT POLYMER	0
	TCBD156M025CRSZ0723E Elco (AVX)	CAP TANT POLYMER	0
	TCH9227M016W0040L Elco (AVX)	CAP TANT POLYMER	0
	TCJC155M050S0300 Elco (AVX)	CAP TANT POLYMER	0
	TCJX477M006R0050 Elco (AVX)	CAP TANT POLYMER	0
	TCJE106M050S0070 Elco (AVX)	CAP TANT POLYMER	0
	TCBY227M004CRSZ0H24E Elco (AVX)	CAP TANT POLYMER	0
	TCJR475M010S0500 Elco (AVX)	CAP TANT POLYMER	0
	TCJY477M004S0050 Elco (AVX)	CAP TANT POLYMER	0
	TCH9157M025W0050U Elco (AVX)	CAP TANT POLY 150UF 25V SMD	0
	TCJC685M050S0200 Elco (AVX)	CAP TANT POLYMER	0
	TCBD106M035CRSZ0H00E Elco (AVX)	CAP TANT POLYMER	0
	TCJC225M050S0300 Elco (AVX)	CAP TANT POLYMER	0
	TCJD227M010R0015 Elco (AVX)	CAP TANT POLYMER	0
	TCJY157M004S0015 Elco (AVX)	CAP TANT POLYMER	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.