Tantalum - Polymer Capacitors

Image	Part Number	Description / PDF	Quantity	Rfq
	TCH9226M100W0150L Elco (AVX)	CAP TANT POLYMER	0
	TCBD476M016CRSZ0H23E Elco (AVX)	CAP TANT POLYMER	0
	TCJK476M006S0200 Elco (AVX)	CAP TANT POLYMER	0
	TCJD685M063S0120 Elco (AVX)	CAP TANT POLYMER	0
	TCJY226M025S0070 Elco (AVX)	CAP TANT POLYMER	0
	TCBD157M006CRSZ0723E Elco (AVX)	CAP TANT POLYMER	0
	TCJE686M025S0050 Elco (AVX)	CAP TANT POLYMER	0
	TCJD157M010S0045 Elco (AVX)	CAP TANT POLYMER	0
	TCJY226M020S0070 Elco (AVX)	CAP TANT POLYMER	0
	TCJY227M006R0015 Elco (AVX)	CAP TANT POLYMER	0
	TCRD686M010R0070JE Elco (AVX)	CAP TANT POLY 68UF 10V 2917	0
	TCNO156M006R0500E Elco (AVX)	CAP TANT POLY 15UF 6.3V 1206	0
	TCJC475M063S0200 Elco (AVX)	CAP TANT POLYMER	0
	TCBD476M016CRSZ0H24E Elco (AVX)	CAP TANT POLYMER	0
	TCJD337M004R0015 Elco (AVX)	CAP TANT POLYMER	0
	TCJD157M004R0015 Elco (AVX)	CAP TANT POLYMER	0
	TCBD107M010CRSZ0724E Elco (AVX)	CAP TANT POLYMER	0
	TCH9476M050B0070U Elco (AVX)	CAP TANT POLY 47UF 50V SMD	0
	TCJY336M025S0070 Elco (AVX)	CAP TANT POLYMER	0
	TCH9157M025W0050L 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.