• Latest
  • Trending
  • All
  • Capacitors
  • Resistors
  • Inductors
  • Filters
  • Fuses
  • Non-linear Passives
  • Applications
  • Integrated Passives
  • Oscillators
  • Passive Sensors
  • New Technologies
  • Aerospace & Defence
  • Automotive
  • Industrial
  • Market & Supply Chain
  • Medical
  • RF & Microwave
  • Telecommunication

Tantalum Polymer use in GaN based applications

11.1.2022
Schematic of the structure of Co3O4@NiMoO4 composite samples

Researchers Achieved High Power Density of Transition Metal Oxides SC Electrodes

5.8.2022

TAIYO YUDEN Launches Automotive 150°C Compact Power Chip Inductor

5.8.2022

European Components Distribution Continues in Fast Grow in Q2 2022

5.8.2022

Alpha Electronics Opens New Foil Resistor Plant in Japan

5.8.2022

Murata Announces Chip Ferrite Beads with Highest Ever Current Capabilities

2.8.2022

Bourns Releases New Compact Size High Current Ferrite Beads

29.7.2022

HEICO to Acquire Exxelia

29.7.2022

Bourns Releases New Telecom Power Fuse Family

29.7.2022
  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About
No Result
View All Result
NEWSLETTER
Passive Components Blog
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication
    Schematic of the structure of Co3O4@NiMoO4 composite samples

    Researchers Achieved High Power Density of Transition Metal Oxides SC Electrodes

    TAIYO YUDEN Launches Automotive 150°C Compact Power Chip Inductor

    European Components Distribution Continues in Fast Grow in Q2 2022

    Alpha Electronics Opens New Foil Resistor Plant in Japan

    Murata Announces Chip Ferrite Beads with Highest Ever Current Capabilities

    Bourns Releases New Compact Size High Current Ferrite Beads

    HEICO to Acquire Exxelia

    Bourns Releases New Telecom Power Fuse Family

    Bourns Releases New Current Sense Transformers

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Resistors for EVs and Automotive

    Transformer Design for EMC; WE Webinar

    Film Capacitor Failures Deep Dive Case Study

    Analogue Temperature Controller and Thermistor LTSpice Simulation Video

    Calculating the Inductance of a DC Biased Inductor

    Diode RC Snubber Explained

    Basics of PCB production, Part 1; WE Webinar

    Effects of Harsh Environmental Conditions on Film Capacitors

    Common-mode Choke Parameters Explained; WE Webinar

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
  • Home
  • NewsFilter
    • All
    • Aerospace & Defence
    • Antenna
    • Applications
    • Automotive
    • Capacitors
    • Filters
    • Fuses
    • Inductors
    • Industrial
    • Integrated Passives
    • Market & Supply Chain
    • Medical
    • New Materials & Supply
    • New Technologies
    • Non-linear Passives
    • Oscillators
    • Passive Sensors
    • Resistors
    • RF & Microwave
    • Telecommunication
    Schematic of the structure of Co3O4@NiMoO4 composite samples

    Researchers Achieved High Power Density of Transition Metal Oxides SC Electrodes

    TAIYO YUDEN Launches Automotive 150°C Compact Power Chip Inductor

    European Components Distribution Continues in Fast Grow in Q2 2022

    Alpha Electronics Opens New Foil Resistor Plant in Japan

    Murata Announces Chip Ferrite Beads with Highest Ever Current Capabilities

    Bourns Releases New Compact Size High Current Ferrite Beads

    HEICO to Acquire Exxelia

    Bourns Releases New Telecom Power Fuse Family

    Bourns Releases New Current Sense Transformers

    Trending Tags

    • Ripple Current
    • RF
    • Leakage Current
    • Tantalum vs Ceramic
    • Snubber
    • Low ESR
    • Feedthrough
    • Derating
    • Dielectric Constant
    • New Products
    • Market Reports
  • VideoFilter
    • All
    • Antenna videos
    • Capacitor videos
    • Filter videos
    • Fuse videos
    • Inductor videos
    • Non-linear passives videos
    • Oscillator videos
    • Passive sensors videos
    • Resistor videos
    • Sensors

    Resistors for EVs and Automotive

    Transformer Design for EMC; WE Webinar

    Film Capacitor Failures Deep Dive Case Study

    Analogue Temperature Controller and Thermistor LTSpice Simulation Video

    Calculating the Inductance of a DC Biased Inductor

    Diode RC Snubber Explained

    Basics of PCB production, Part 1; WE Webinar

    Effects of Harsh Environmental Conditions on Film Capacitors

    Common-mode Choke Parameters Explained; WE Webinar

    Trending Tags

    • Capacitors explained
    • Inductors explained
    • Resistors explained
    • Filters explained
    • Application Video Guidelines
    • EMC
    • New Products
    • Ripple Current
    • Simulation
    • Tantalum vs Ceramic
  • Knowledge Blog
  • Suppliers
    • Preferred Suppliers
    • Who is Who
  • Events
No Result
View All Result
Passive Components Blog
No Result
View All Result

Tantalum Polymer use in GaN based applications

11.1.2022
Reading Time: 13 mins read
0 0
0
SHARES
122
VIEWS
Full paper pdf download

GaN based RF devices offer significant advantages in a wide spectrum of applications ranging from commercial to high reliability / flight use equipment. This paper looks at the ability of Tantalum Polymer capacitors to be used on the voltage supply lines of GaN based Power Amplifiers. The fundamentals of Tantalum Polymers are presented along with recent products intended for flight systems.

A comparison of Tantalum Polymers to Aluminum Electrolytics & MLCCs in both electrical and environmental performance is provided. An example of a high power GaN RF transistor will be shown along side with performance features of each technology.

RelatedPosts

KYOCERA AVX Launches New Interactive Component Search Tool

KYOCERA AVX Earns a Prestigious Gold Level 2021 TTI Europe Supplier Excellence Award

Replacing Aluminum Electrolytic Capacitors with Tantalum or Ceramic Capacitors

The paper was presented by Ron Demcko, AVX USA and Slavomir Pala, AVX Czech Republic at the 3rd PCNS 7-10th September 2021, Milano, Italy as paper No.4.3.

Jump to section

2. Tantalum and Aluminum Polymer Capacitors

  • 1. Introduction
  • 2. Tantalum and Aluminum Polymer Capacitors
  • 3. GaN Application Example and Conclusions

Tantalum Polymer Capacitors

Tantalum Polymer capacitors are created by utilizing a conductive polymer in the cathode of the tantalum capacitor as shown in figure 3.

The anode wire is tantalum and a porous pellet of Tantalum powder is pressed onto the anode wire. The resulting structure is sintered into a monolithic block and a Ta2O5 dielectric is formed. A conductive polymer layer is deposited onto that structure and with added processing a tantalum conductive polymer capacitor is formed. This results in very low ESR devices compared to traditional Tantalum devices. ESR decreases of up to eight times are reasonable to expect and that translates into up to eight times the current capability compared to traditional tantalum capacitors.

Tantalum Polymer capacitors have added advantages of:

  • Improved energy density allowing wide range of product values in smaller case sizes thus providing low inductance in face down/undertab designs
  • Wide voltage range: 2.5v to 125v
  • Lower de-rating required:
    • 90% rated voltage / 10% voltage de-rating for products rated up to 10Vr
    • 80% rated voltage / 20% voltage de-rating for products rated 16Vr and higher  
  • Benign failure mode if shorted
  • No DC Bias voltage effects
  • High Reliability – Space flight qualified & auto grade families available 
Figure 3. Tantalum Conductive Polymer Capacitor Cross section

A key feature of Tantalum conductive polymer capacitors is improved energy density and the flexibility that allows in providing reasonably sized capacitance ratings in small case sizes with reduced component height. Currently, case size dimensions can range from 0402 to 2924 and heights can be as low as 0.55mm.

Such small sizes translates into a capability of tantalum polymer bulk capacitors to withstand high levels of shock & vibration associated with automotive and flight applications.

Common conditions achieved are:

Figure 4. Tantalum Polymer Inductance by case size
  • Shock: MIL-STD-202, Method 213, Condition I, 100 G peak
  • Vibration: MIL-STD-202, Method 204, Condition D, 10 Hz to 2,000 Hz, 20 G peak

It is especially important to note that the broad range of conductive tantalum polymer capacitor package types and case sizes allow designers to place these capacitors at ideal PCB locations for maximum efficiency. Potentially smaller parts that have the capability to be placed in ways to reduce the loop inductance of the bulk capacitor relative to the capacitor bank. The wide number of different sized cases allows designers to utilize the ideal physical device in most applications. The inductance of Tantalum Polymer case sizes is shown in figure 4.

Aluminum Electrolytic Polymer capacitor

Aluminum Electrolytic Polymer capacitors come in either layered or wound styles. In the case of layered conductive polymer aluminum capacitors, a conductive polymer is the electrolyte. The layered devices have an aluminum cathode as shown in figure 5a. Layered aluminum polymers tend to offer reduced inductance over wound aluminum polymers – thus extended frequency response. Also layered aluminum polymers exhibit greatly reduced heights relative to wound aluminum polymers. Lowered height results in better shock and vibration performance as well as ease of implementation into height-constrained designs. The case of layered aluminum polymers is resin compound with J leads.

Wound conductive epoxy aluminum polymers are based upon a conductive polymer electrolyte but utilize a wound electrode structure vs stacked (as in the case of layered conductive polymers). Wound aluminum polymers shown in figure 5b) offer a larger capacitance range than layered aluminum polymers. In addition, wound aluminum polymers provide potentially lower ESR than stacked Aluminum polymer technology.

The prior device design explanations help understand the characteristics of these two devices in terms of  Electrical and environmental performance.  Figure 6 is a high-level comparison of the three technologies.

Figure 6. Tantalum Polymer vs Aluminum Polymer Technology comparison

Tantalum Polymer Flight Approvals

The power, weight and volume advantages of GaN semiconductors is welcomed by the spectrum of flight platforms across the world. 

Specifically, the ESA has published recognized advantages of GaNs as [4]:

  • High output power density, small size, easy impedance match
  • High voltage operation, simplified voltage conversion
  • Operation under extreme environmental conditions

The desire to utilize GaN is understandable given that the cost to launch hardware can be considered approximately $25 per gram.

Tantalum Polymer Capacitors can complement and further GaN based system size & weight reduction.

Tantalum Polymer Capacitors  be as small as 0402 case size with volumes as low as 0.363mm3 and weights low as 1mg. Such small size components are ideal for providing miniature bulk capacitance in advanced performance PAs.

Currently, NASA has Tantalum Polymer under review for flight use and the ESA has recognized Tantalum Polymer Capacitor technology for flight system use. ESA has approved TCS series capacitors in ESA 3012/006 as a Polymer MultiAnode Tantalum Capacitor Based on TCS Type. This family of parts has a maximum rated voltage of 50v. One very common used gate bias capacitor value is 10uf with a rated voltage of 35v. In fact, 35v rated ESA 3012/006 capacitor are approved in values up to 33uf, which may also potentially be used on low voltage drain bias filtering lines as well.

Hermetic encapsulated tantalum polymer capacitors are available as well in the TCH series – ESA3012/00*

The presence of excess moisture initiates a degradation of the polymer cathode material which is further accelerated by temperature and voltage (i.e. 85C/85% RV). The result is a loss in the polymer cathode conductivity causing an unpredictable drop in capacitance which is not generally recoverable. Though automotive AEC-Q200 and COTS-Plus grade Polymer capacitors are commonly used in moisture sensitive applications the hermetic packaged device offers even higher levels of enhanced performance.

Hermetic packaging of polymer capacitors was developed for extreme use applications in an attempt to suppress the impact of humidity and oxidization on the Tantalum Polymer capacitor. TCH capacitors are ideal for flight gate & drain bias banks with voltage ratings as high as 100v. Common values of use are: 22uf at 100v rating, 33uf at 75v rating, 47uf at 50v rating and 150uf at 35v rating.

Jump to section

2. Tantalum and Aluminum Polymer Capacitors

  • 1. Introduction
  • 2. Tantalum and Aluminum Polymer Capacitors
  • 3. GaN Application Example and Conclusions
Page 2 of 3
Previous 123 Next
Source: EPCI

Related Posts

Schematic of the structure of Co3O4@NiMoO4 composite samples
Capacitors

Researchers Achieved High Power Density of Transition Metal Oxides SC Electrodes

5.8.2022
3
Capacitors

European Components Distribution Continues in Fast Grow in Q2 2022

5.8.2022
5
The RFID module that can be embedded into tires that Murata codeveloped with Michelin
Applications e-Blog

RFID Modules Embedded into Tires; Murata Story

29.7.2022
39

Popular Posts

  • Understanding High-Precision Resistor Temperature Coefficient of Resistance

    0 shares
    Share 0 Tweet 0
  • Capacitor Selection for Coupling and Decoupling Applications

    28 shares
    Share 28 Tweet 0
  • Ripple Current and its Effects on the Performance of Capacitors

    3 shares
    Share 3 Tweet 0
  • How to Choose the Right Inductor for DC-DC Buck Applications

    0 shares
    Share 0 Tweet 0
  • Why Low ESR Matters in Capacitor Design

    0 shares
    Share 0 Tweet 0
  • Leakage Current Characteristics of Capacitors

    0 shares
    Share 0 Tweet 0
  • Dielectric Constant and its Effects on the Properties of a Capacitor

    7 shares
    Share 7 Tweet 0
  • What is a Dielectric Constant of Plastic Materials ?

    4 shares
    Share 4 Tweet 0

Newsletter Subscription

 

Archive

2022
2021
2020
2019
2018
2017

  • Home
  • Privacy Policy
  • EPCI Membership & Advertisement
  • About

© EPCI - Premium Passive Components Educational and Information Site

No Result
View All Result
  • Home
  • News
  • Video
  • Knowledge Blog
  • Preferred Suppliers
  • Events

© EPCI - Premium Passive Components Educational and Information Site

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
This website uses cookies. By continuing to use this website you are giving consent to cookies being used. Visit our Privacy and Cookie Policy.