What Advent Diamond does

Advent Diamond, Inc. is a privately held U.S. semiconductor company founded in 2018 and headquartered in Tempe, Arizona (7700 S. River Pkwy, Suite 2618), that designs and manufactures all-diamond semiconductor components for defense, aerospace, telecommunications, quantum technology, power electronics, and radiation detection applications. Its core technology platform spans p-type, intrinsic (i-type), and n-type diamond layers grown via Plasma Enhanced Chemical Vapor Deposition (PECVD), combined with proprietary low-resistance ohmic contacts, etch recipes, and metallization designed for silicon-foundry-compatible processing. The exclusive 2018 license to P-doped (n-type) PECVD diamond technology underpins the stack, supplemented by internally developed materials and processes including BalancedEtch (1000x surface defect reduction), catCMP (sub-nanometer surface roughness), SeamlessDiamond, PQuantumDiamond, and nanoCTM.

The product portfolio includes High Power RF Components (all-diamond diodes and limiters operating GHz to THz, with turn-on voltage as low as 1.2V and >100W power handling demonstrated), Power Components (diodes and transistors operating up to 500 degrees C with 3-4x higher power handling than SiC), Quantum Materials and Sensors (patent-pending PQuantumDiamond magnetic field sensor with solid-state electric readout), and Radiation Sensors including the ClearXCam 2304 in-beam X-ray imaging module. Advent Diamond operates an industrial-scale Class 100 Cleanroom, currently produces 2-inch single crystal diamond wafers, and has announced a roadmap to 4-inch wafers by 2026-2028.

The business model is direct enterprise sales of catalog and custom-designed all-diamond components via website inquiry forms, phone contact, and quote-based multi-year contracts. Pricing is not publicly disclosed. Revenue is generated from hardware sales of RF diodes, limiters, power diodes, transistors, quantum sensors and materials, and radiation sensors to defense, telecom, and quantum technology customers. Strategic partnerships include a co-development with Northrop Grumman's Microelectronics Center (achieving the >100W limiter record), academic collaborations with Arizona State University and Virginia Tech, and grant funding from NSF, DOE, and DARPA. The company is exclusively U.S.-based with operations, manufacturing, and development conducted domestically to support the U.S. microelectronics supply chain.

Name

Advent Diamond

Legal name

Advent Diamond, Inc.

Website

https://adventdiamond.com

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Diamond Semiconductor Components

NAICS

Irradiation Apparatus Manufacturing (334517)

SIC

X-Ray Apparatus & Tubes & Related Irradiation Apparatus (3844)

akta.pro primary industry

Diodes & Rectifiers (Standard/Fast/Schottky) (HDAHAHAD)

Keywords

• Diamond semiconductor components
• RF power diodes
• Radiation detection sensors
• Quantum sensing materials
• Power electronic devices

Headquarters

HQ city

Scottsdale

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Diamond Semiconductor Component Sales: Revenue generated from the sale of all-diamond discrete and integrated semiconductor components, including RF diodes, limiters, power diodes, transistors, quantum sensors, quantum materials, and radiation sensors. Products are sold as catalog items and custom-designed components to defense, telecom, and quantum technology customers.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Advent Diamond designs and manufactures all-diamond semiconductor components, including high-power RF diodes and limiters, power diodes and transistors, quantum materials and sensors, and radiation sensors. The company operates an industrial-scale Class 100 Cleanroom in Tempe, Arizona, and produces its own diamond epitaxial layers using proprietary processes such as BalancedEtch, catCMP, and SeamlessDiamond, with materials sold as catalog items or custom designs to defense, telecom, and quantum technology customers.

Product overview

Advent Diamond offers a platform technology for all-diamond semiconductor components spanning discrete and integrated devices. The product portfolio includes High Power RF Components (diodes and limiters operating in GHz-THz range), Power Components (diodes and transistors for power electronics up to 500°C), Quantum Materials and Sensors (using proprietary PQuantumDiamond™ for solid-state magnetic field sensing), and Radiation Sensors (including the ClearXCam™ 2304 imaging system and custom sensor solutions). Supporting these core products are proprietary processes: BalancedEtch™ for surface defect reduction, catCMP™ for atomic-level surface polishing, SeamlessDiamond™ for epilayer growth, and Diamond Epilayer Deposition services (p-type, intrinsic, and n-type layers). The company also develops unique diamond materials including PQuantumDiamond™ and nanoCTM. The technology stack includes p-, i-, and n-type diamond layers with proprietary low-resistance ohmic contacts, enabling components that surpass conventional semiconductors in defense, telecommunications, sensing, and quantum applications.

Differentiator

Problem solved

Functional benefit

Brands

• ClearXCam: Detector Module and Readout Electronics forming the ClearXCam 2304 – a compact in-beam imaging system for X-ray beamline scientists.
• PQuantumDiamond
• nanoCTM
• BalancedEtch
• catCMP

Products and services

• High Power RF Components All-diamond RF diodes and receiver protection solutions operating at S, C, X and higher frequency bands with maximum input in the tens to hundreds of watts range and turn-on voltage as low as 1.2V. Built for extreme power and high frequency in defense and telecommunications applications.
• Power Components All-diamond power diodes and transistors operating at temperatures up to 500°C with 3-4x higher power handling compared to SiC. Designed for compact, efficient power in weight-critical applications such as EV charging and power electronics.
• Quantum Materials and Sensors Patent-pending quantum sensors using PQuantumDiamond™ material for magnetic field sensing with integrated solid-state electric readout, including quantum materials portfolio with surface engineering for ultra-smooth low-defect surfaces and PQuantumDiamond™ films for high-performance sensing.
• ClearXCam™ 2304 Compact detector module and readout electronics forming an in-beam imaging system for X-ray beamline scientists. Used for discovery of in-beam features, position monitoring, and simplifying focusing events in synchrotron and high-energy physics applications.
• Radiation Sensors

Quantifiable outcome

• Composite figure of merit ~10× GaN, ~5× SiC, ~400× Si for simultaneous high-power and high-frequency operation
• +8 more outcomes

Named customers1 record

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Three partnerships are on record, tiered core.

• Northrop GrummancoreStrategic or Co-development Partner · 6 May 2026Advent Diamond and Northrop Grumman co-developed and tested diamond-based solid-state limiters, achieving a new performance record of >100W power handling for radar receiver protection. Northrop Grumman's Microelectronics Center conducted high-power RF testing. This strategic partnership accelerates the transition of advanced diamond RF technologies into deployable defense solutions and strengthens the U.S. microelectronics supply chain.
• Arizona State University (ASU)coreStrategic or Co-development PartnerArizona State University is listed as a partner in Advent Diamond's ecosystem of leading researchers, manufacturers, and integrators advancing all-diamond semiconductors. ASU brings research capabilities in diamond materials and microelectronics.
• Virginia TechcoreStrategic or Co-development PartnerVirginia Tech is listed as a partner collaborating on advancing all-diamond semiconductors for high performance and next-generation applications.

Scale indicators10 records

Recent moves3 records

Expansion highlights5 records

Direct peers

• MACOM Technology Solutions: Designer and manufacturer of RF, microwave, and millimeterwave semiconductor devices for defense, telecom, and industrial markets. Direct overlap in RF diodes, limiters, and power components for radar and electronic warfare — markets Advent Diamond's all-diamond portfolio targets.
• Northrop Grumman: Advent Diamond's named strategic co-development partner and disclosed enterprise customer. Comparable as a defense electronics customer/integrator with internal Microelectronics Center that validated Advent's diamond limiter at >100W power handling.
• Element Six (De Beers Group): World-leading producer of synthetic diamond materials, including electronic-grade single-crystal and polycrystalline diamond substrates. A key upstream supplier to the diamond semiconductor industry and direct materials peer whose wafer roadmap constrains/enables Advent Diamond's scaling.
• Wolfspeed: Leading silicon carbide (SiC) semiconductor manufacturer focused on power electronics and RF. Directly comparable as the primary incumbent Advent Diamond aims to displace in high-temperature, high-power-density applications including EV charging, defense radar, and industrial power conversion.
• Qorvo: GaN and GaAs RF semiconductor leader serving defense, 5G, and aerospace markets. Competes head-to-head with Advent Diamond in the high-frequency, high-power RF component space where diamond's GHz–THz and >100W advantages target.

Emerging players

• Akhan Semiconductor: Emerging diamond semiconductor company pursuing diamond-based electronics for RF and power applications. Closest emerging-stage competitor with overlapping focus on diamond semiconductor devices, though operating with different material architecture and stage.

Regional players

• Sumitomo Electric: Japanese manufacturer of high-purity single-crystal and polycrystalline diamond substrates for semiconductor and quantum applications. Comparable as a competing diamond wafer supplier and materials peer whose roadmap determines industry-wide wafer economics.

Broad incumbents

• Raytheon (RTX): Major defense prime integrator of radar, electronic warfare, and communications systems that consume RF and power semiconductor content. Customer/incumbent ecosystem comparable to Northrop Grumman's role — a likely future customer for Advent Diamond's high-power RF limiters.
• Lockheed Martin: Defense prime already listed as a partner-ecosystem member on Advent Diamond's website. Comparable as a potential customer/incumbent system integrator for diamond RF and power components across radar, missile, and satellite platforms.
• II-VI / Coherent: Diversified semiconductor and photonic materials company producing SiC substrates, GaAs, and other compound semiconductor materials serving RF, power, and defense markets. Broad incumbent whose wide-bandgap substrate portfolio competes for the same design-in dollars as Advent Diamond's diamond components.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/advent-diamond

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds4 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Advent Diamond