MTI Milliren

What MTI Milliren does

MTI Milliren Technologies, Inc., founded in 1990 and headquartered in Newburyport, Massachusetts, is a specialized manufacturer of precision frequency control and timing products. The company's portfolio spans oven-controlled crystal oscillators (OCXOs) in roughly 15 distinct series, temperature-compensated and voltage-controlled crystal oscillators (TCXOs, VCXOs), GPS disciplined oscillators, PLL/synthesizers, and Cesium atomic frequency references. Its core competency lies in low-g-sensitivity and radiation-hardened timing devices engineered to operate reliably in harsh dynamic, thermal, and shock environments encountered in military, aerospace, and space applications.

The company's product architecture combines proprietary low-G sensitivity technology with hermetically sealed packaging, radiation hardening (up to 50krad Si), and MIL-spec screening (MIL-PRF-55310, MIL-STD-883, MIL-STD-202). Flagship offerings include the 263 Series double oven OCXO with thermal stability of ±1.0E-10 over 100°C, the 558 Series dual-output space clock, the 220 Series pyro-shock-insensitive space OCXO surviving 1000g shocks, and a patented Cesium atomic clock integrated with a low-G sensitivity DOCXO delivering better than ±5E-11 frequency accuracy after 24 hours. The firm is ISO 9001 and AS 9100 certified, qualifying it as a supplier into defense and aerospace OEM supply chains.

MTI Milliren operates a custom-quoted B2B pricing model typical of precision military/aerospace components, distributing through regional sales representatives and direct website inquiries rather than digital channels. The company serves three primary verticals: defense and aerospace OEMs (primary), telecommunications infrastructure, and commercial electronics. It maintains a complementary partnership with Radar Technology, Inc. for logarithmic amplifiers, discriminators, and linear amplifiers, enabling combined offerings to shared defense and military customers. With only 1-10 employees, the company functions as a focused niche manufacturer with no disclosed revenue, funding events, M&A activity, or public capital markets presence.

Name

MTI Milliren

Legal name

MTI-Milliren Technologies, Inc.

Website

https://mti-milliren.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

1–10 employees

Short description

MTI Milliren Technologies is a Newburyport, MA-based manufacturer of precision frequency control products, including OCXOs, GPS disciplined oscillators, Cesium atomic clocks, and synthesizers, primarily serving defense, aerospace, telecommunications, and commercial electronics OEMs.

Ownership category

akta.pro rank

Product category

Precision Frequency Control Components (Oscillators)

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (33451)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Oscillators & Frequency Standards (OCXO/Rubidium/Cesium/Chip-Scale Atomic) (HDAFAKAG)

akta.pro secondary industry

Frequency Control Components (Quartz Crystals/Oscillators/Resonators) (HDAHANAF)

Keywords

• Precision oscillators
• OCXO manufacturing
• Frequency control products
• Military timing solutions
• GPS disciplined oscillators

Headquarters

HQ city

Newburyport

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Technology or R&D, Operations, Infrastructure

Distribution channels1 record

Marketing channels1 record

Core offering

MTI Milliren manufactures and sells precision frequency control components — primarily Oven Controlled Crystal Oscillators (OCXOs), Double Oven OCXOs, TCXOs, VCXOs, GPS Disciplined Oscillators, PLL/Synthesizers, and Cesium Atomic Frequency References — for defense, aerospace, space, telecommunications, and commercial electronics OEMs. The company offers a broad portfolio spanning ultra-compact commercial surface-mount OCXOs through ruggedized, radiation-hardened, MIL-PRF-55310-screened space-flight oscillators, and also provides custom-engineered frequency control solutions.

Product overview

MTI Milliren Technologies is a precision oscillator and frequency control product manufacturer offering a comprehensive portfolio of frequency timing solutions. The product line spans multiple oscillator types including Oven Controlled Crystal Oscillators (OCXOs) in various series (205, 210, 211, 212, 220, 221, 222, 225, 230, 240, 250, 260, 270), GPS Disciplined Oscillators, PLL/Synthesizers, Temperature Compensated Crystal Oscillators (TCXOs), and Voltage Controlled Crystal Oscillators (VCXOs). The company serves military, aerospace, and commercial markets with specialized Hi-Rel/Space products including radiation-hardened OCXOs, the 558 Series Space Clock, and Cesium Atomic Frequency References. Products range from compact commercial units to ruggedized military-grade oscillators designed for extreme environments including UAVs, rotorcraft, tracked vehicles, shipboard, and space applications. The company also provides custom solutions engineering services.

Differentiator

Problem solved

Functional benefit

Products and services

• 212 Series OCXO Ultra-compact, surface-mount oven controlled crystal oscillator performing to Stratum III/IIIe standards with thermal stability to 2.0E-08 over -40°C to +85°C, 3-minute warm-up, low phase noise (-120dBc/Hz at 10Hz), and ~4.6g hermetically sealed package. Designed for high-volume commercial applications including mobile radios, PCS systems, home meter reading, and battery-powered devices.
• 263 Series Double Oven OCXO Rugged double oven controlled crystal oscillator with low g-sensitivity <1.0E-10/g/axis and thermal stability of ±1.0E-10 over 100°C, available with radiation hardening and MIL-PRF-55310 screening. Targeted at demanding military applications including UAVs, rotorcraft, and tracked vehicles, with internal 24-bit D/A converter for non-volatile I2C calibration.
• 222 Series OCXO Rugged low-g-sensitivity OCXO (<2.0E-10/g/axis) factory optimized for specific vibration profiles, operating in environments up to 20grms. Designed for UAVs, manned aircraft, rotorcraft, tracked vehicles, shipboard, and industrial applications.
• 225 Series OCXO Extremely durable OCXO tested and surviving multiple 100G shocks and 46grms random acceleration, radiation hardened to tactical levels for Gamma, Neutron, and Total Dose exposures. Designed for demanding defense and aerospace environments and tested per MIL-STD-883.
• 220 Series Hi-Rel Space Flight OCXO High-reliability OCXO with integrated pyro-shock isolation in a 1/3 cubic inch hermetically sealed package, surviving multiple 1000g shocks and 24grms random acceleration up to 2kHz, nuclear hardened for space-flight applications.
• 558 Series Hi-Rel Dual Output Space Clock Hermetically sealed space clock with radiation hardness to 50Krad Si and rugged high-grms capability, delivering dual frequency outputs (500MHz and 125MHz), low jitter of 3.5PS at 500MHz, and vibration endurance to 40grms. Qualified with MIL-PRF-55310 Class S screening and suited for beacon frequency reference, DDS clocks, hi-performance microprocessor clocks, master reference, and ADC/DAC clocks.
• Cesium Clock Low-G sensitivity Cesium atomic frequency reference assembly for airborne applications combining Cesium atomic clock performance with MTI's patented Low-G sensitivity DOCXO in a hermetically sealed package. Generates highly accurate frequency typically better than ±5E-11 after 24hrs with very low phase noise in dynamic environments, using less than 16W at -40°C. Fine leak tested per MIL-STD-883G with EMI/EMP protection.
• Cesium Clock Low Cost Lower-cost variant of the Cesium atomic frequency reference assembly for rugged military and airborne applications, providing 10MHz (qty 1) and 100MHz (qty 5) frequency outputs with temperature stability of 5.0E-10pp and a moisture-sealed chassis per MIL-STD-202.
• 270 Series OCXO Ultra-high stability, high-reliability double oven controlled crystal oscillator with industry-standard Euro CO-08 footprint, offering thermal stability of 2.0E-10 to 5.0E-09 over 100°C ambient temperature range and rivaling Rubidium atomic clock performance. Used in telephony, timing and frequency standards, TDMA PCS base stations, and quasi-synchronous radio.
• 260 Series OCXO Ultra-high stability/high-reliability oven controlled quartz crystal oscillator with thermal stabilities from 2.0E-10 to 4.0E-09 over 100°C, positioned as a direct replacement for atomic clocks with substantial cost savings.
• 250 Series OCXO Industry-standard low-cost/high-stability OCXO utilized worldwide in telecommunications and instrumentation applications, available in a frequency range of 32kHz to 60MHz with thermal stability of 2.0E-09 to 5.0E-07.
• 240 Series OCXO Low profile OCXO with AT or SC cut resonator, frequency range 75kHz to 30MHz, thermal stability 1.0E-08 to 5.0E-07, designed for rack-mounted or portable applications.
• 230 Series OCXO High-stability OCXO in a 1.423 x 1.071 x 0.765 inch package with SC cut resonator, thermal stability of 1.5E-08 over 100°C, and phase noise of -115dBc/Hz at 10Hz offset at 10MHz.
• 221 Series OCXO Surface-mount oven controlled quartz crystal oscillator in a hermetically sealed package measuring 0.975 x 0.800 x 0.500 inches, performing to Stratum III and IIIe standards with thermal stability of 2.0E-08 over 100°C temperature range.
• 205 Series OCXO The most compact oven controlled quartz crystal oscillator offered by MTI Milliren, with a hermetically sealed package of 0.815 x 0.515 x 0.394 inches, frequency range 8MHz to 200MHz, and thermal stability of 3.5E-06 over 100°C.
• 210 Series OCXO 14-pin DIP oven controlled quartz crystal oscillator designed as an ideal replacement for clock oscillators or TCXOs, with thermal stability of 5.0E-07 over 100°C temperature range and 0.70W continuous power consumption.
• 211 Series OCXO High-performance compact oven controlled crystal oscillator performing to Stratum III and IIIe standards, with fast warm-up and a hermetically sealed package, designed for high-volume applications.
• GPS Disciplined Oscillators GPS disciplined oscillators that synchronize frequency output to GPS satellite signals to deliver highly accurate and stable timing reference, with low phase noise and low g-sensitivity variants available for mobile fast acquisition, rugged military applications, and ground/satellite communications.
• PLL/Synthesizers Phase-locked loop frequency synthesizers that generate precise frequency signals from a reference source, used alongside OCXOs to provide application-specific frequency outputs.
• TCXOs Temperature compensated crystal oscillators providing stable frequency output across varying temperature ranges for commercial and industrial applications where lower stability than an OCXO is acceptable.
• VCXOs Voltage controlled crystal oscillators that allow frequency adjustment through an external tuning voltage input, supporting phase-locked loop and synchronization use cases.
• Custom Solutions Custom engineering and manufacturing services that tailor MTI Milliren's frequency control products (oscillators, atomic references, GPS-disciplined units) to specific customer performance, environmental, and packaging requirements.

Quantifiable outcome

• 263 Series achieves thermal stability of ±1.0E-10 over 100°C temperature range
• +3 more outcomes

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Radar Technology, Inc.minorStrategic or Co-development PartnerRadar Technology is an industry leader in the design and manufacturing of Logarithmic Amplifiers, Discriminators and Linear Amplifiers for both commercial and military applications. The partnership allows MTI and Radar Technology to offer complementary product lines and new innovative designs to their shared customer base in defense and military markets.

Recent moves1 record

Expansion highlights5 records

Direct peers

• Abracon: Abracon is a broad-line frequency control and timing component supplier offering OCXOs, TCXOs, VCXOs, crystals, and MEMS oscillators. Comparable to MTI on the commercial/industrial OCXO side (similar to 240 and 250 Series) and competes in adjacent telecom and instrumentation applications.
• Q-Tech Corporation: Q-Tech is a leading US specialist in space- and military-grade crystal oscillators and OCXOs, directly competing with MTI's 225, 220, and 558 Series Hi-Rel space clocks. Both companies target rad-hard, MIL-PRF-55310-screened frequency references for defense primes and space payloads.
• Bliley Technologies: Bliley is a Pennsylvania-based veteran-owned manufacturer of OCXOs, TCXOs, VCXOs, and custom precision frequency control solutions for military, aerospace, and industrial customers. Direct competitor to MTI's 200- and 260-Series OCXOs and to its custom engineering services.
• Rakon Limited: Rakon is a New Zealand-headquartered global leader in precision frequency control products including OCXOs, TCXOs, and crystal oscillators serving space, defense, and telecom. Comparable to MTI on high-stability OCXO, space-qualified timing, and GPS-disciplined oscillator product families.
• Greenray Industries: Greenray is a closely held US manufacturer specializing in high-reliability OCXOs and crystal oscillators for military, aerospace, and telecommunications. Direct niche competitor to MTI's Mil/Aero OCXO lines including the 230, 260, and 270 Series.
• Crystek Corporation: Crystek manufactures a broad OCXO, TCXO, VCXO, PLL, and crystal filter catalog serving instrumentation, telecom, and military markets. Closely comparable to MTI in product breadth across frequency control components, particularly in PLL/synthesizer and OCXO lines.
• IQD Frequency Products (Würth Elektronik): IQD is a UK-based, Würth Elektronik-owned OCXO and TCXO/VCXO specialist serving telecom, industrial, and military markets worldwide. Compares to MTI on standard and high-stability OCXO product lines such as the 250 and 270 Series, plus Stratum III/IIIe telecom-grade references.

Broad incumbents

• CTS Corporation: CTS operates a Frequency Products segment (formerly Valpey Fisher) that supplies OCXOs, TCXOs, and VCXOs into industrial, military, and telecom markets. Larger incumbent with broader commercial reach, similar to MTI's mid-line OCXO portfolio.
• NDK (Nihon Dempa Kogyo): NDK is a major Japanese frequency control product manufacturer offering OCXOs, TCXOs, VCXOs, crystal filters, and SAW devices into telecom and industrial markets. Broad incumbent comparable to MTI's commercial OCXO (250, 270 Series) and telecommunications base station business.
• Microchip Technology (Microsemi Frequency & Time): Microchip acquired Microsemi (which had previously acquired Vectron International and Symmetricom), making it the dominant incumbent in precision frequency control, OCXOs, atomic clocks, and space-grade timing references. Overlaps with MTI across OCXOs, DOCXOs, GPS-disciplined oscillators, and rubidium/cesium references for defense and telecom.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/mti-milliren-technologies-inc-

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

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 MTI Milliren