Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T55P335M6R3C0500 Vishay / Sprague	CAP TANT POLY 3.3UF 6.3V 0805	3180
T55D477M2R5C0009 Vishay / Sprague	CAP TANT POLY 470UF 2.5V 2917	500
T55D107M010C0018 Vishay / Sprague	CAP TANT POLY 100UF 10V 2917	429
T55B226M004C0200 Vishay / Sprague	CAP TANT POLY 22UF 4V 1411	0
T55A336M004C0500 Vishay / Sprague	CAP TANT POLY 33UF 4V 1206	0
T55Z226M035C0070 Vishay / Sprague	CAP TANT POLY 22UF 35V 2917	26
T55V157M6R3C0018 Vishay / Sprague	CAP TANT POLY 150UF 6.3V 2917	0
T55D477M2R5C0007 Vishay / Sprague	CAP TANT POLY 470UF 2.5V 2917	250
T55B227M2R5C0035 Vishay / Sprague	CAP TANT POLY 220UF 2.5V 1411	0
T55P106M6R3C0500 Vishay / Sprague	CAP TANT POLY 10UF 6.3V 0805	960
T55T686M004C0070 Vishay / Sprague	CAP TANT POLY 68UF 4V 1411	0
T55P475M010C0500 Vishay / Sprague	CAP TANT POLY 4.7UF 10V 0805	2499
T55A685M6R3C0500 Vishay / Sprague	CAP TANT POLY 6.8UF 6.3V 1206	1680
T54EE477M016ESA025 Vishay / Sprague	CAP TANT POLY 470UF 16V 2917	48
T55A156M010C0500 Vishay / Sprague	CAP TANT POLY 15UF 10V 1206	1740
T55B685M016C0200 Vishay / Sprague	CAP TANT POLY 6.8UF 16V 1411	1945
T55V336M016C0070 Vishay / Sprague	CAP TANT POLY 33UF 16V 2917	0
T55B686M004C0070 Vishay / Sprague	CAP TANT POLY 68UF 4V 1411	0
T55B157M6R3C0070 Vishay / Sprague	CAP TANT POLY 150UF 6.3V 1411	0
T55D337M004C0015 Vishay / Sprague	CAP TANT POLY 330UF 4V 2917	499

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.