Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
TCJD336M035R0100 Elco (AVX)	CAP TANT POLY 33UF 35V 2917	0
M551B507K060AH KEMET	CAP TANT POLY 500UF 60V CHAS MNT	0
T540D337M006BH86107280 KEMET	CAP TANT POLY 330UF 6.3V 2917	0
T540D477K004CH86107610 KEMET	CAP TANT POLY 470UF 4V 2917	0
T540B336M006BH86107610 KEMET	CAP TANT POLY 33UF 6.3V 1411	0
T540D227K006CH86057610 KEMET	CAP TANT POLY 220UF 6.3V 2917	0
M550B507K040AT KEMET	CAP TANT POLY 500UF 40V CHAS MNT	0
T55B336M010C0200 Vishay / Sprague	CAP TANT POLY 33UF 10V 1411	0
T541X337M010AH8605 KEMET	CAP TANT POLY 330UF 10V 2917	0
T540D337M006AH8610WAFL KEMET	CAP TANT POLY 330UF 6.3V 2917	0
T55A476M004C0180 Vishay / Sprague	CAP TANT POLY 47UF 4V 1206	1972
M550B108K050BH KEMET	CAP TANT POLY 1000UF 50V CHAS MT	0
T556B147M006AH KEMET	CAP TANT POLY 140UF 6.3V SMD	0
T598V157M006AHS045 KEMET	CAP TANT POLY 150UF 6.3V 2917	0
TCJC105M063R0300 Elco (AVX)	CAP TANT POLY 1UF 63V 2312	71
T540B107K003DH86107610 KEMET	CAP TANT POLY 100UF 3V 1411	0
T540D226K0CT8705 KEMET	CAP TANT POLY 22UF 2917	0
T598B107M004ATE045 KEMET	CAP TANT POLY 100UF 4V 1411	2000
T530D227M010AHE006 KEMET	CAP TANT POLY 220UF 10V 2917	589
T540B336K010AH8510 KEMET	CAP TANT POLY 33UF 10V 1411	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.