5 Steps of Reliability Prediction and MTBF/FR Calculation
1. Select Component Family and Type 
2. Select Reliability Prediction Method
3. Select Environment and Temperature
4. Enter Component Parameters
5. Get MTBF and FR
Reliability Prediction Standards
ALCATEL 
ANSI/VITA 51.1
BELLCORE Issue 5, BELLCORE Issue 6
BRITISH TELECOM HRD4, BRITISH TELECOM HRD5
CNET RDF93 rev 02/95
FIDES Guide 2004, FIDES 2009
FIDES 2009 Families count
FIDES 2009 Parts count
GJB/Z 299B Part count, GJB/Z 299B Part stress
GJB 299C Part count and Part stress
HRD5 TELECOMM
IEC 62380
ITALTEL IRPH93
MIL-HDBK-217E-1 Part stress
MIL-HDBK-217F-1 Part count, MIL-HDBK-217F-1 Part stress,
MIL-HDBK-217F-2 Part count, MIL-HDBK-217F-2 Part stress
HDBK-217Plus
NPRD-95, NPRD-2011, NPRD-2016
Telcordia Issue 1, Telcordia Issue 2
Telcordia Issue 3, Telcordia Issue 4
Siemens SN 29500-1
Siemens SN 29500-2005-1 (Siemens Norm)
Siemens SN 29500-2016
UTE C 80-810 (RDF2000)
NPRD-95
NSWC-98/LE1 Mechanics
The software package also contains Reliability Data Component Library for active electronic components (IC-Digital, IC-Analog, IC-Memory) and Part Number automatic recognition algorithms for the most popular manufacturers of capacitors and resistors (see user guide for manufacturers list).
Questions About Free MTBF Calculation Software
Is ALD MTBF Calculator free?
MTBF Calculator is a freeware calculator. It is absolutely free - there is no time limit or installations count limit. Download, install and use it.
Why is it free?
ALD Reliability and Safety Solutions Ltd. has been working in the field of reliability, safety and quality of the safety-critical and mission-critical equipment (mainly aerospace, defense, transportation and telecommunications) for over 30 years. We support the promotion of System Reliability and Safety and wish to make Reliability Prediction more accessible for reliability engineering practitioners and students.
How to use it for reliability prediction?
ALD MTBF Calculator is Windows Desktop application. You should download and install it on your PC with MS Windows. For operational instructions, please see the MTBF Calculator User Manual - Reliability Prediction with ALD MTBF Calculator.
Where to get it?
Download free MTBF Calculator directly from our web site by clicking this link: Download Free ALD MTBF Calculator.
How to install it?
Save the installation file to your local hard drive and run it. Installation wizard will guide you through the setup process. Then run the MTBF calculator from your Start menu, "ALD Engineering" menu group. See MTBF Calculator Installation Guide for detailed setup instructions.
What if I have problems or questions?
The MTBF calculator is a freeware tool and is provided as-is, without technical support. However, we are committed to continuously improve it and therefore appreciate your comments and suggestions - please send them to This email address is being protected from spambots. You need JavaScript enabled to view it. .
See Also:
ALD Reliability Prediction SoftwareALD Reliability Analysis and Safety Assessment Software
Download ALD Reliability&Safety Software