Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
TCJC225M063R0200E Elco (AVX)	CAP TANT POLY 2.2UF 63V 2312	708
TCJE107M016R0040E Elco (AVX)	CAP TANT POLY 100UF 16V 2917	0
TCJW686M006R0070E Elco (AVX)	CAP TANT POLY 68UF 6.3V 2312	0
TCJR106M006R0500 Elco (AVX)	CAP TANT POLY 10UF 6.3V 0805	27
TCJA685M025R0150 Elco (AVX)	CAP TANT POLY 6.8UF 25V 1206	0
TCJY157M006R0015E Elco (AVX)	CAP TANT POLY 150UF 6.3V 2917	0
TCJB227M004R0035 Elco (AVX)	CAP TANT POLY 220UF 4V 1411	16262
TCJX477M006R0055E Elco (AVX)	CAP TANT POLY 470UF 6.3V 2917	0
TCJD686M025R0070E Elco (AVX)	CAP TANT POLY 68UF 25V 2917	0
TCJK476M006R0400E Elco (AVX)	CAP TANT POLY 47UF 6.3V 1206	0
TCJD476M020R0055 Elco (AVX)	CAP TANT POLY 47UF 20V 2917	494
TCJE476M035S0055E Elco (AVX)	CAP TANT POLY 47UF 35V 2917	786
TCNL475M035R0300 Elco (AVX)	CAP TANT POLY 4.7UF 35V 1411	212
TCJD475M100R0250 Elco (AVX)	CAP TANT POLY 4.7UF 100V 2917	0
TCJD476M025R0100E Elco (AVX)	CAP TANT POLY 47UF 25V 2917	196
TCQD227M006R0025E Elco (AVX)	CAP TANT POLY 220UF 6.3V 2917	0
TCJY686M025R0100E Elco (AVX)	CAP TANT POLY 68UF 25V 2917	1379
TCJA107M006R0100E Elco (AVX)	CAP TANT POLY 100UF 6.3V 1206	6191
TCJY157M004R0045E Elco (AVX)	CAP TANT POLY 150UF 4V 2917	0
TCJD686M025R0070 Elco (AVX)	CAP TANT POLY 68UF 25V 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.