T-Cubed Systems

What T-Cubed Systems does

T-Cubed Systems, Inc. is a privately held California corporation founded in 1990 that develops and markets RelCalc for Windows, a Mean Time Between Failures (MTBF) reliability prediction software used by reliability, design, and quality engineers in aerospace, defense, telecommunications, electronics, and medical-device organizations. The product implements two principal industry-standard methodologies: TELC4 (Telcordia SR-332), used primarily in telecom and commercial electronics, and 217F2 (MIL-HDBK-217F Notice 2), used in military and aerospace applications; VITA 51.1 support extends coverage into the embedded-computing ecosystem. The software is built around a proprietary Part Library containing more than 44,000 electronic components, allowing engineers to construct system-level reliability predictions by assembling component models from a curated dataset rather than re-entering parameters manually.

The company monetizes primarily through software licensing, with a Single-User License at $1,995 (including a two-year subscription) and $395 annual renewals, a Multi-User License at $5,395 per seat with $1,095 annual renewals per seat, and a separate one-time Part Library purchase at $695. A free demo is available, and an Enterprise License arrangement exists with Ericsson for Telcordia SR-332. The firm also offers MTBF Consulting Services, extending its reliability expertise into fee-based advisory work. The transition to subscription pricing has converted the revenue base from perpetual one-time sales into recurring annual renewals.

T-Cubed is headquartered in Westlake Village, California, and reports more than 600 customers across 25 countries, with named enterprise users including Boeing, Lockheed Martin, Raytheon, Northrop Grumman, NASA, HP, Motorola, Intel, and the U.S. Army. The business has operated for over 35 years without disclosed external funding, M&A, or leadership change, indicating a self-funded, niche-software operating model oriented toward long-cycle enterprise customers in regulated industries.

Name

T-Cubed Systems

Legal name

T-Cubed Systems, Inc.

Website

https://t-cubed.com

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

11–50 employees

Short description

T-Cubed Systems develops RelCalc for Windows, an MTBF reliability prediction software used by reliability engineers in aerospace, defense, telecom, and electronics to perform component-level analyses per MIL-HDBK-217F and Telcordia SR-332 standards. The firm serves 600+ customers in 25 countries via subscription licensing.

Ownership category

akta.pro rank

Product category

Reliability Prediction Software

NAICS

Software Publishers (51321), Testing Laboratories and Services (54138)

SIC

Services-Prepackaged Software (7372), Services-Engineering Services (8711)

akta.pro primary industry

Reliability, Safety & Risk Engineering (RAMS/PSM) Consulting (BPAHAIAK)

Keywords

• Reliability prediction software
• MTBF calculation tools
• Failure rate modeling
• MIL-HDBK-217 software
• Telcordia SR-332 software

Headquarters

HQ city

Westlake Village

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Software License Sales (Single-User): RelCalc for Windows V5.5 Single-User License sold as subscription model. Single-User License is node-locked, may only be used on a single machine at a time. Initial purchase includes 2-year subscription. Subscription renewal required annually at $395.
2. Software License Sales (Multi-User): RelCalc for Windows V5.5 Multi-User License (floating license) sold as subscription model. Multi-User License may be installed on multiple machines with concurrent user limits based on purchased seats. Initial purchase includes 2-year subscription. Subscription renewal required annually at $1,095 per seat.
3. Part Library Data Package: Optional data package providing over 44,000 part records and hundreds of thousands of resistor/capacitor records. Sold as one-time purchase at $695 for electronic delivery.
4. MTBF Consulting Services: Consulting services for MTBF reliability prediction calculations using Telcordia SR-332 and/or MIL-HDBK-217. Includes BOM import setup, part parameter research, calculations, and report creation.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

T-Cubed Systems develops and markets the RelCalc for Windows desktop software, which automates MTBF (Mean Time Between Failures) reliability prediction calculations using the Telcordia SR-332 (commercial electronics) and MIL-HDBK-217F Notice 2 (military/defense) methodologies. The software is sold on an annual subscription license with Single-User and Multi-User (floating) options, complemented by a 44,000+ record Part Library data package and fee-based MTBF consulting services. Target users are reliability engineers at aerospace, defense, telecommunications, medical, and electronics manufacturers.

Product overview

T-Cubed Systems offers the RelCalc for Windows software suite, a specialized reliability prediction tool for electronic products. The product line includes two parallel versions of the core software: RelCalc V5.5-TELC4 (for Telcordia SR-332 commercial reliability predictions) and RelCalc V5.5-217F2 (for MIL-HDBK-217 military reliability predictions). Both versions support Single-User and Multi-User license options and operate under a subscription licensing model. The portfolio is complemented by a Windows Part Library Data Package containing over 44,000 electronic component records, a free Demo Package for evaluation, and professional MTBF Consulting Services for customers who prefer outsourced reliability analysis.

Differentiator

Problem solved

Functional benefit

Brands

• RelCalc for Windows: MTBF reliability prediction calculation software that automates Telcordia SR-332 and MIL-HDBK-217 reliability prediction procedures. Available in V5.5-TELC4 (Telcordia SR-332 Issue 4) and V5.5-217F2 (MIL-HDBK-217F Notice 2) versions.
• RelCalc

Products and services

• RelCalc for Windows V5.5-TELC4 MTBF reliability prediction software for Windows that automates the Telcordia SR-332 Issue 4 calculation procedure for commercial electronic products. Sold under Single-User or Multi-User subscription license; runs on Windows 10/11.
• RelCalc for Windows V5.5-217F2 MTBF reliability prediction software for Windows that automates the MIL-HDBK-217F Notice 2 calculation procedure for military and defense electronic equipment. Sold under Single-User or Multi-User subscription license; includes optional VITA 51.1 Improved Quality Factors for more realistic MTBF results.
• Windows Part Library Data Package V5.5 One-time electronic-delivered compilation of over 44,000 part parameter records for ICs, semiconductors, resistors, capacitors, and other electronic components, version-matched to RelCalc V5.5 (TELC4 or 217F2) for rapid recall into RelCalc circuits.
• MTBF Consulting Services Professional services engagement covering BOM import setup, part parameter research, MTBF calculations using Telcordia SR-332 and/or MIL-HDBK-217, and report generation for organizations seeking outsourced reliability analysis or first-time prediction support.
• RelCalc Demo Package V5.5 Free demonstration version of RelCalc for Windows virtually identical to the full software, with limited capacity and part types, available in V5.5-TELC4 and V5.5-217F2 variants for prospective customers to evaluate MTBF reliability prediction risk-free.

Quantifiable outcome

• 60-95% reduction in prediction time compared to manual methods
• +2 more outcomes

Named customers25 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature7 records

Partnerships

Two partnerships are on record, tiered core.

• EricssoncoreTechnology or IntegrationT-Cubed Systems purchased an Enterprise License from Ericsson that allows the company to use Telcordia SR-332 Issue 4 models in the RelCalc software. This license enables T-Cubed to implement the Telcordia reliability prediction procedure in V5.5-TELC4. T-Cubed Systems has no other connection or affiliation with Ericsson/Telcordia other than this enterprise license. Ericsson/Telcordia does not review, approve, or support the RelCalc software.
• VITAcoreTechnology or IntegrationT-Cubed Systems has permission from VITA to use the VITA 51.1 Improved Quality Factors in RelCalc V5.5-217F2. This allows the software to offer more realistic MTBF results using ANSI/VITA 51.1-2013 (S2025) standards for quality factor adjustments. T-Cubed has no other connection or affiliation with VITA.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• BQR Reliability Engineering: BQR sells reliability prediction and MTBF software (fiXtress, BQRcare) targeting aerospace, defense, and rail — directly competing with RelCalc on MIL-HDBK-217 and Telcordia SR-332 calculations.
• DfR Solutions: DfR Solutions (now part of ANSYS) provided reliability prediction software and services for electronics manufacturers; previously competed directly with RelCalc on MTBF and reliability modeling before being absorbed by ANSYS.
• ReliaSoft (HBK): ReliaSoft, now part of Hottinger Brüel & Kjær (HBK), sells Weibull++, BlockSim, and Lambda Predict — direct MTBF/reliability prediction tools competing head-to-head with RelCalc for the same reliability engineer persona in aerospace, defense, and electronics.
• ITEM Software (itemsoft): ITEM Software provides reliability, maintainability, and safety analysis tools (RAMS) for industrial and defense applications — a direct functional competitor in reliability prediction.
• ALD (now Siemens ALD): ALD built RAMS and reliability prediction tools adopted by rail and aerospace customers; following acquisition it is part of Siemens but historically competed head-to-head with RelCalc on Telcordia/MIL-HDBK reliability work.

Broad incumbents

• Synopsys: Synopsys is a broad EDA incumbent with chip-level reliability and aging analysis in its portfolio, addressing the same electronics reliability buyer that RelCalc serves but at the silicon and SoC level.
• PTC: PTC's Windchill/Reliability offerings address electronics reliability within its broader PLM stack. Competes less on standalone MTBF and more as an enterprise alternative for reliability engineering teams.
• ANSYS: ANSYS absorbed Relex and DfR Solutions to fold reliability prediction into its broader simulation portfolio. It overlaps with RelCalc on MTBF and physics-of-failure analysis but as part of an enterprise simulation platform rather than a standalone handbook tool.
• Siemens EDA (Mentor Graphics): Siemens EDA inherited reliability tool assets (including ALD) and bundles electronics reliability with its EDA/PLM portfolio. Competes for the same aerospace/defense reliability engineer with an integrated toolchain.

Emerging players

• Quanterion Solutions: Quanterion is the successor to the Reliability Analysis Center (RAC) and provides reliability handbooks, software tools, and consulting for defense/aerospace — overlapping with RelCalc on handbook-based reliability prediction and training.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/t-cubed-systems-inc.

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 T-Cubed Systems