Reliability Testing Overview
A chain is as strong as its weakest link, and the NASCENTechnology transformer has eliminated every weak link. NASCENTechnology Transformers embed the coil windings within a multi-layer hermetically sealed core structure that is sintered into one unit.
This completely eliminates plastic bobbins with fragile rails and terminals as well as the fine magnetic wire and brittle cores prone to breakage. Lighter, smaller and hermetically sealed, NASCENTechnology transformers are reliable, solid and resistant to extreme shock and vibration.
What is Reliability?:
Succinctly, MIL-STD-721c describes reliability as:
- The duration or probability of failure-free performance under stated conditions
- The probability that an item can perform its intended function for a specified interval under stated conditions
NASCENTechnology Reliability Testing
Contract Reliability Testing:
NASCENTechnology can contract with you for reliability testing on your current products. We can develop test routines for specific end users in relevant environments. Not our design? Not a problem. We manage this through a combination of our own on-site equipment and staff and our network of reliability testing partners who provide us with a rapid turnaround on testing using their specialized machines and capabilities.
Standard Product Application Based Reliability Testing:
NASCENTechnology is familiar with the reliability requirements, standards, and end use applications of LTCC products delivered within the HIREL markets we serve. There are often subtle differences from one application to another even within the same market. In most cases, you will find that we can empower you to assess a product’s performance within your application by providing you with on-hand reliability test reports.
Custom Product Reliability Testing:
If we design a custom product for you, your reliability requirements will be part of the conversation resulting in a true Design For Reliability consideration. Following that, we can perform the critical reliability testing for you or we can provide the product for your internal proprietary reliability testing purposes.
Common Reliability Tests and/or Standards Available from NASCENTechnology
Thermal Shock: IAW MIL-STD-202, Test Method 107
Resistance to Soldering Heat: IAW MIL-STD-202, Test Method 210
Dielectric Withstand Voltage: IAW MIL-STD-202, Test Method 301
Insulation Resistance: IAW MIL-STD-202, Test Method 302
Temperature Rise: IAW MIL-PRF-21038 paragraph 4.7.17
Life Test: MIL-STD-21038F section 4.7.9
Vibration: IAW MIL-STD-202, method 204
Mechanical Shock: IAW MIL-STD-202, method 213
Moisture Resistance: IAW MIL-STD-202, method 106
Solderability: IAW MIL-STD- 202, Test Method 208, Category 3, Test B
Resistance to Solvents: IAW MIL-STD-202, Test Method 215
Terminal Strength: IAW MIL-PRF-55342, Paragraph 184.108.40.206
Fungus: IAW MIL-STD-810, Test Method 508
Lead Integrity: MIL-STD-883H, M2004.6, condition D
Solder Thermal Cycling: N(test, 50%) per accelerated test guideline IPC-SM-785
Humidity: MIL-STD-202G, Method 103B
Note: The above is simply a selection of commonly selected Reliability Tests regularly performed on new LTCC transformer designs. Customers with specialized applications and difficult environments often consult with us to determine the appropriate suite of tests to verify reliability in their specific end use. Additionally, some customers specify tests to be performed as part of a Lot Acceptance Test routine as part of an “up-screening” process to be done on Commercial Off-the-Shelf parts.