Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T55P106M004C0500 Vishay / Sprague	CAP TANT POLY 10UF 4V 0805	3
T55V227M6R3C0015 Vishay / Sprague	CAP TANT POLY 220UF 6.3V 2917	970
T55A336M6R3C0180 Vishay / Sprague	CAP TANT POLY 33UF 6.3V 1206	2018
T55A476M004C0200 Vishay / Sprague	CAP TANT POLY 47UF 4V 1206	1990
T55B476M6R3C0150 Vishay / Sprague	CAP TANT POLY 47UF 6.3V 1411	1537
T59EE226M050C0100 Vishay / Sprague	CAP TANT POLY 22UF 50V 2917	523
T55P156M004C0200 Vishay / Sprague	CAP TANT POLY 15UF 4V 0805	45
T55T336M6R3C0070 Vishay / Sprague	CAP TANT POLY 33UF 6.3V 1411	2525
T55B686M6R3C0070 Vishay / Sprague	CAP TANT POLY 68UF 6.3V 1411	1315
T55Z107M010C0025 Vishay / Sprague	CAP TANT POLY 100UF 10V 2917	792
T58MM106M6R3C0300 Vishay / Sprague	CAP TANT POLY 10UF 6.3V 0603	3870
T55A156M004C0500 Vishay / Sprague	CAP TANT POLY 15UF 4V 1206	1948
T55T686M004C0200 Vishay / Sprague	CAP TANT POLY 68UF 4V 1411	0
T55D107M025C0060 Vishay / Sprague	CAP TANT POLY 100UF 25V 2917	4051
T55D108M2R5C0007 Vishay / Sprague	CAP TANT POLY 1000UF 2.5V 2917	0
T55D477M6R3C0007 Vishay / Sprague	CAP TANT POLY 470UF 6.3V 2917	546
T55V107M010C0045 Vishay / Sprague	CAP TANT POLY 100UF 10V 2917	730
T55D337M6R3C0007 Vishay / Sprague	CAP TANT POLY 330UF 6.3V 2917	179
T55D337M004C0008 Vishay / Sprague	CAP TANT POLY 330UF 4V 2917	500
T55A156M010C0200 Vishay / Sprague	CAP TANT POLY 15UF 10V 1206	1998

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.