Tantalum - Polymer Capacitors

Part Number	Description / PDF	Quantity
T55A226M004C0200 Vishay / Sprague	CAP TANT POLY 22UF 4V 1206	3205
T55A336M2R5C0180 Vishay / Sprague	CAP TANT POLY 33UF 2.5V 1206	0
T58W9476M6R3C0300 Vishay / Sprague	CAP TANT POLY 47UF 6.3V 0805	2289
T58MM226M6R3C0500 Vishay / Sprague	CAP TANT POLY 22UF 6.3V 0603	3965
T59EE226M063C0100 Vishay / Sprague	CAP TANT POLY 22UF 63V 2917	3150
T55T226M6R3C0070 Vishay / Sprague	CAP TANT POLY 22UF 6.3V 1411	2455
T55B336M010C0070 Vishay / Sprague	CAP TANT POLY 33UF 10V 1411	439
T55T107M004C0150 Vishay / Sprague	CAP TANT POLY 100UF 4V 1411	0
T55Z107M6R3C0045 Vishay / Sprague	CAP TANT POLY 100UF 6.3V 2917	670
T55A336M6R3C0500 Vishay / Sprague	CAP TANT POLY 33UF 6.3V 1206	0
T55V107M6R3C0045 Vishay / Sprague	CAP TANT POLY 100UF 6.3V 2917	2
T55D337M010C0018 Vishay / Sprague	CAP TANT POLY 330UF 10V 2917	3962
T55A106M6R3C0200 Vishay / Sprague	CAP TANT POLY 10UF 6.3V 1206	932
T55Z477M2R5C0025 Vishay / Sprague	CAP TANT POLY 470UF 2.5V 2917	800
T55D687M2R5C0007 Vishay / Sprague	CAP TANT POLY 680UF 2.5V 2917	500
T55D227M6R3C0008 Vishay / Sprague	CAP TANT POLY 220UF 6.3V 2917	400
T55A476M6R3C0500 Vishay / Sprague	CAP TANT POLY 47UF 6.3V 1206	74
T55D107M010C0025 Vishay / Sprague	CAP TANT POLY 100UF 10V 2917	385
T55V227M6R3C0025 Vishay / Sprague	CAP TANT POLY 220UF 6.3V 2917	590
T55B157M2R5C0055 Vishay / Sprague	CAP TANT POLY 150UF 2.5V 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.