Home / Themes / AI Power '26: Passive Components & Plumbing

AI Power '26: Passive Components & Plumbing (open on stockthemes)

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Bull / Bear Details has the investment thesis and bull/bear points. Overview is monitoring guidance (hiring, forums, second-order trends, search keywords, Google Trends, datasets).

Bull / Bear Details

This theme focuses on companies providing essential passive electronic components and thermal/electrical "plumbing" for high-performance AI infrastructure. Thes

Thesis

This theme focuses on companies providing essential passive electronic components and thermal/electrical "plumbing" for high-performance AI infrastructure. These specialized capacitors, inductors, substrates, and PCBs are critical for managing extreme power, heat, and high-speed data demands in AI servers and data centers.

Bull case

  • The surging global demand for AI compute and the rapid build-out of AI data centers are driving unprecedented and sustained demand for high-performance passive components. This includes specialized MLCCs, tantalum capacitors, and power inductors essential for GPU power delivery and overall server rack functionality.

  • The increasing power density and extreme heat generation within AI chips necessitate continuous innovation in advanced thermal management solutions and high-voltage passive components. This includes high-voltage ceramic capacitors, advanced ceramic substrates (HTCC/LTCC), and specialized PCBs to prevent overheating and ensure stable, efficient operation of AI systems.

  • The imperative for ultra-low latency and high-speed data transfer in AI clusters, particularly with the adoption of 800G/1.6T Ethernet switches, fuels demand for high-Q, high-frequency capacitors and advanced, high-layer-count printed circuit boards that maintain signal integrity and minimize data loss.

Bear case

  • Broader macroeconomic slowdowns, escalating geopolitical tensions, and high interest rates could significantly impact capital expenditure plans of major customers in AI infrastructure. This could lead to reduced demand for passive components and affect the overall growth trajectory of the theme.

  • The specialized nature of many AI-grade passive components makes the supply chain vulnerable to disruptions, constrained manufacturing capacity, and volatility in raw material costs. Dependencies on specific regions or limited suppliers for critical materials could lead to price increases, extended lead times, and production delays.

  • The rapid pace of innovation in AI hardware and the increasing power demands are leading to significant power grid constraints and a physical impossibility of sourcing enough power for AI data centers. This bottleneck could restrict the expansion of AI infrastructure, thereby limiting the demand for passive components.

Overview

Hiring Trend Watchpoints

High-performing operators in this theme are expected to show increased hiring in specialized engineering roles, particularly for R&D in advanced materials, power electronics, and thermal management solutions. We should observe an expansion in manufacturing engineering and automation specialists to scale production of complex, high-spec components. Geographically, continued investment in talent in key Asian manufacturing hubs (Japan, Taiwan, Korea) for production, alongside R&D centers in the US and Europe for cutting-edge design, would confirm theme execution. A surge in demand for supply chain professionals to manage global component flows is also expected. Conversely, a slowdown in hiring for these specialized roles, a shift towards generalist positions, or significant layoffs in core engineering functions would signal potential weakening.

Forum Watchlist

  • subreddit — r/hardwarehigh

    Discussions on new AI hardware, server builds, and component performance.

  • subreddit — r/datahoardermedium

    Conversations around data center infrastructure, power efficiency, and component reliability.

  • forum — EEVblog Forumhigh

    Deep technical discussions on passive components, power electronics, and circuit design challenges in high-performance computing.

  • forum — AnandTech Forumsmedium

    Discussions on new CPU/GPU architectures, server platforms, and the underlying component technologies.

  • community — Stack Exchange (Electrical Engineering)medium

    Technical Q&A on power delivery, signal integrity, and component selection for advanced electronics.

Industry Publications

  • EE Times (eetimes.com) — Comprehensive coverage of the semiconductor and electronics industry, including passive components and AI hardware trends.
  • Electronic Design (electronicdesign.com) — Focus on design engineering, power management, and component selection relevant to AI systems.
  • Power Electronics News (powerelectronicsnews.com) — Specialized coverage of power supply units, voltage regulators, and high-voltage components critical for AI racks.
  • Semiconductor Engineering (semiconductorengineering.com) — In-depth articles on chip design, manufacturing, and the materials science behind advanced components.
  • Data Center Dynamics (datacenterdynamics.com) — Covers the physical infrastructure of data centers, including power, cooling, and networking, directly impacting component demand.

Second Order Trends

The relentless demand for AI compute is driving several second-order trends within passive components and plumbing. First, **extreme power density and thermal management** are becoming paramount, leading to increased innovation in high-voltage ceramic capacitors and advanced thermal substrates (HTCC/LTCC) to prevent AI chips from overheating. Second, the push for **ultra-fast interconnects** is accelerating the adoption of 800G/1.6T Ethernet switches, requiring specialized high-Q, high-frequency capacitors and complex, high-layer-count PCBs for signal integrity and low latency. Third, there's a growing emphasis on **on-chip and near-chip power delivery**, necessitating ultra-small, high-capacitance MLCCs for GPU decoupling. Finally, **supply chain resilience and diversification** are gaining importance due to geopolitical factors, potentially leading to regionalization of manufacturing and increased investment in alternative suppliers.

Search Keywords Brand Product

  • MLCCs
  • Multilayer Ceramic Capacitors
  • Tantalum capacitors
  • Power inductors
  • Ceramic substrates
  • HTCC
  • LTCC
  • Aluminum Electrolytic capacitors
  • Polymer capacitors
  • High-Q capacitors
  • High-frequency capacitors
  • Printed Circuit Boards
  • PCBs
  • GPU decoupling capacitors
  • AI server power supply units
  • 800G Ethernet switches
  • 1.6T Ethernet switches
  • AI rack power

Search Keywords Policy Regulatory

  • CHIPS Act
  • Semiconductor export controls

Search Keywords Event Phrases

  • CES
  • Computex
  • Hot Chips
  • OFC Conference
  • DesignCon
  • Data Center World

Google Trend Product Category Intent

• AI server components • High performance capacitors • Data center power solutions • GPU power delivery • Advanced PCB technology

Google Trend Consumer Intent

• AI hardware trends • Data center infrastructure • Next generation servers

Google Trend Macro Policy Terms

• Semiconductor supply chain • AI infrastructure investment

Economic Data Watch

1. WSTS — Worldwide Semiconductor Market Statistics

Matched (medium)semi_semiconductor_equipment_billings · access=file · map_only

Metric/field WSTS Blue Book: Worldwide Semiconductor Shipments (Total Revenue, USD Billions)

Cadence irregular

Why it matters Directly reflects overall demand for electronic components, indicating the health and growth of the semiconductor industry which is foundational to AI infrastructure.

Signal to watch Increasing revenue indicates strong demand for passive components. Decreasing revenue suggests a slowdown.

Confidence: high

2. FRED (Federal Reserve Economic Data) — Industrial Production and Capacity Utilization

Not in registryaccess=api

Metric/field IPG3344S (Industrial Production: Computer and Electronic Product Manufacturing)

Cadence monthly

Why it matters Measures the output of computer and electronic product manufacturing, a key sector for passive component demand, reflecting overall production activity.

Signal to watch Rising production signals increased demand and manufacturing activity for AI-related hardware. Declining production suggests a contraction.

Confidence: high

3. FRED (Federal Reserve Economic Data) — Producer Price Index by Industry

Not in registryaccess=api

Metric/field WPU0617 (Producer Price Index by Industry: Electronic Component Manufacturing)

Cadence monthly

Why it matters Indicates pricing power and cost pressures within the electronic component manufacturing sector, directly impacting the margins of theme members.

Signal to watch Increasing PPI suggests pricing power and potentially higher margins. Decreasing PPI may indicate pricing pressure and weaker demand.

Confidence: high

4. US Census Bureau — Value of Construction Put in Place Survey

Not in registryaccess=api

Metric/field Value of Construction Put in Place, Private Commercial, Data Centers (NAICS 518210, Seasonally Adjusted Annual Rate, USD Billions)

Cadence monthly

Why it matters Directly tracks investment in data center infrastructure, which is a primary end-market for passive components and plumbing solutions in the AI theme.

Signal to watch Increasing spending indicates robust expansion of AI data centers. Decreasing spending suggests a slowdown in infrastructure build-out.

Confidence: high

5. IDC/Gartner (Industry Research Firms) — Worldwide Quarterly Server Tracker

Matchedgartner_it_spending_market_forecasts · access=file · map_only

Metric/field Global Server Market Revenue Growth (Year-over-Year %)

Cadence irregular

Why it matters Provides a direct measure of the growth in the global server market, a key driver for demand of passive components used in AI servers.

Signal to watch Accelerating revenue growth indicates strong demand for AI servers and associated components. Decelerating growth suggests a cooling market.

Confidence: medium

Free Alt Data Watch

1. Indeed Hiring Lab — Job Postings Data

Matched (medium)engine_advertising_brand_tracking · access=file · map_only

Metric/field AI Job Postings Data (Index, Global/Key Regions for 'AI Hardware Engineer', 'Data Center Technician')

Cadence irregular

Why it matters Serves as a proxy for hiring trends and industry expansion in the AI hardware and data center sectors, indicating underlying growth.

Signal to watch Rising job postings suggest increasing investment and activity in AI infrastructure. Declining postings may signal a slowdown.

Confidence: medium

2. Google Trends — Search Interest Data

Not in registry

Metric/field Google Trends Search Interest: 'AI server components' AND 'MLCC demand' (Index Value)

Cadence weekly

Why it matters Indicates public and industry interest in key components and demand drivers for the theme, providing an early, qualitative demand signal.

Signal to watch Increasing search interest suggests growing awareness and potential demand for these components. Decreasing interest may indicate reduced focus.

Confidence: medium

3. MarineTraffic/VesselFinder — Port Congestion Data

Matched (medium)marinetraffic_port_calls_fleet_analytics · access=file · map_only

Metric/field Port Congestion Index (Key Asian Ports: Shanghai, Busan, Tokyo)

Cadence irregular

Why it matters Reflects the health and efficiency of the global supply chain, particularly for components manufactured in Asia, impacting delivery times and costs.

Signal to watch Increasing congestion indicates potential supply chain bottlenecks and delays. Decreasing congestion suggests smoother logistics.

Confidence: medium

4. Publicly Available Information/News Aggregators — Data Center Construction Tracking

Not in registry

Metric/field Publicly Reported Major Hyperscale Data Center Construction Starts (Count/Capacity)

Cadence quarterly/event_driven

Why it matters Provides visual and reported confirmation of physical infrastructure build-out for AI, directly impacting demand for passive components.

Signal to watch An increasing number or capacity of new construction starts indicates strong future demand. A slowdown suggests reduced investment.

Confidence: medium

5. Apify Google News Pulse API — News Sentiment Analysis

Matched (medium)context_analytics_news_sentiment · access=file · map_only

Metric/field Sentiment Score & Article Volume ('AI infrastructure' AND 'passive components')

Cadence irregular

Why it matters Offers qualitative insights into market sentiment and news flow surrounding the theme, identifying emerging trends or concerns.

Signal to watch Positive sentiment and increasing article volume suggest growing interest and favorable market conditions. Negative sentiment may signal headwinds.

Confidence: low

Paid Alt Data Watch

1. Supplyframe Commodity IQ — Component Lead Time & Pricing Data

Matched (medium)supplyframe_inventory_lead_times_availability · access=file · map_only

Metric/field MLCC Lead Times (High-capacitance, AI-spec, Weeks)

Cadence irregular

Why it matters Provides direct, granular insight into the supply-demand dynamics and potential pricing power for critical passive components.

Signal to watch Increasing lead times indicate strong demand and potential for price increases. Decreasing lead times suggest easing supply or weakening demand.

Confidence: high

2. BloombergNEF — Hyperscaler Capital Expenditure Tracking

Not in registry

Metric/field Hyperscaler Capital Expenditure (Aggregate of Top Cloud Providers, USD Billions)

Cadence quarterly

Why it matters Directly measures the investment by major cloud providers in AI infrastructure, which drives demand for passive components.

Signal to watch Rising capex indicates aggressive expansion of AI capabilities and data centers. Declining capex suggests a slowdown in investment.

Confidence: high

3. LexisNexis PatentSight — Patent Analytics Software

Matchedlexisnexis_public_records_identity_business_data · access=file · map_only

Metric/field Patent Filings (Keywords: 'AI capacitor', 'high-density MLCC', 'data center thermal management', Count/Trend)

Cadence irregular

Why it matters Tracks innovation and competitive activity in advanced passive components and thermal management, indicating future technological shifts and market leadership.

Signal to watch Increasing patent activity in relevant areas suggests strong R&D and potential for new products. Decreasing activity may signal a slowdown in innovation.

Confidence: high

4. S&P Global Market Intelligence — Data Center & Energy Insights

Matched (medium)s_p_global_trade_supply_chain_data · access=file · map_only

Metric/field Data Center Facility Expansion Plans (New Builds, Capacity Upgrades, GW/MW)

Cadence irregular

Why it matters Offers detailed firmographic data on the expansion plans of data center operators, providing forward-looking insights into capacity growth.

Signal to watch Increasing planned capacity indicates robust future demand for passive components. Delays or reductions suggest potential headwinds.

Confidence: high

5. Orbital Insight — Geospatial Analytics

Matched (medium)orbital_insight_satellite_geospatial_analytics · access=file · map_only

Metric/field Data Center Activity Index (Derived from Power Consumption Proxies, Vehicle Activity, Index Value)

Cadence irregular

Why it matters Provides real-time operational intensity and utilization of data centers, offering insights into actual demand and performance beyond construction.

Signal to watch Rising activity index suggests high utilization and strong demand for AI processing. Declining activity may indicate underutilization or reduced demand.

Confidence: medium

Prediction Market Watch

1. Will China announce looser rare-earth export curbs to the U.S. this month?

Kalshi · Confidence: high

Not in registryaccess=api

Market https://kalshi.com/markets/china-rare-earth-export-curbs-us-this-month

Why it matters An easing of China's rare-earth export curbs would likely lead to more stable or potentially lower raw material costs for manufacturers of passive components, including tantalum capacitors (Yageo) and other critical components, thereby positively impacting their margins and stock prices. Conversely, tightening restrictions would increase input costs.

Series key pm_china_rare_earth_export_curbs_ease

2. Will the House pass additional defense funding?

Kalshi · Confidence: high

Not in registryaccess=api

Market https://kalshi.com/markets/house-pass-additional-defense-funding

Why it matters Increased defense funding directly translates to higher demand for specialized electronic components, such as high-performance capacitors and RF products, which are a significant part of Knowles' Precision Devices segment. This would positively impact Knowles' revenue growth and stock price, as defense is a key end market for the company.

Series key pm_house_additional_defense_funding

3. Will the U.S. government formally restrict public access to at least one major Chinese AI model before December 31, 2026?

Polymarket · Confidence: medium

Not in registryaccess=api

Market https://polymarket.com/market/us-government-restricts-chinese-ai-models-2026

Why it matters Restrictions on Chinese AI models could indirectly impact the demand for advanced AI chips and the high-performance passive components that 'plumb' these chips and AI infrastructure. A slowdown in Chinese AI development or deployment due to such restrictions could reduce overall demand for high-spec passive components from theme constituents.

Series key pm_us_china_ai_model_restrictions

Theme Plain English
This theme focuses on companies providing the critical, often unseen, passive electronic components and foundational "plumbing" essential for high-performance AI infrastructure. These include specialized capacitors, inductors, ceramic substrates, and advanced printed circuit boards, which are crucial for managing the extreme power, heat, and high-speed data flow within AI servers, GPUs, and next-generation networking equipment.
Upcoming Catalysts2 rows
Catalyst IDEstimated TimingEstimated Date StartEstimated Date EndCatalystWhy It MattersTicker Or Theme SpecificTranscript DateSource TypeCatalyst Source
KN_f5dcf974starting in 20272027-01-012027-03-31Knowles will begin shipping on a $15 million-plus order for a radar application.This order provides significant long-term revenue visibility and underscores strong demand in the defense market, supporting future organic growth for Knowles.Ticker2026-07-23earnings_transcriptKN (ticker)
KN_dc866f28sometime in the first half of next year2027-01-012027-06-30Knowles plans to host an Investor Day to provide more details on new growth platforms.This event is expected to unveil detailed plans for future growth drivers such as energy, Micro Solutions Group, inductors, and downhole applications, potentially boosting investor confidence and valuation.Ticker2026-07-23earnings_transcriptKN (ticker)

Constituents

  • — Kyocera Corporation
  • — Yageo Corporation
  • — Murata Manufacturing Co., Ltd.
  • KNT3
    — Knowles Corporation
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