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Reliability Test & Equipment
HALT Evaluation
Altitude Chamber
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Highly Accelerated Life Testing (HALT) - The Thermotron AST-35 HALT chamber applies over-stress to product in a controlled, stepped fashion, while continuously monitoring the product for failures. This testing procedure exposes the weakest points in the design. The equipment incorporates a thermal chamber with vibration equipment.  Capable of -100°C to 200°C excursions at 70°C per minute rate of change while simultaneously applying vibration at 50 G RMS (max).

 

Thermal Shock Chambers - Four Cincinnati Sub Zero Thermal Shock (air-to-air thermal cycle) with a temperature range of  -55C to +150C and capacity of one to three cubic feet.  Equipment provides rapid variation in environmental temperature in order to reveal incompatibility of thermal coefficient of expansion.

Cincinnati Sub Zero Thermal Shock Chamber

 

 

 

Thermal Cycling - Equipment provides cyclic variation in environmental temperature from an agreed upon minimum to maximum temperature.  Temperature transition is typically 20 minutes with an adjustable soak time.  Typically the product under evaluation is functionally checked and / or visually inspected after every 250 cycles with test termination at 1000 cycles.  This test frequently points out issues with BGA solder connections.

Temperature Stress - Evaluates durability at high temperatures/voltages. This equipment allows for increases in temperature from 50°C to 80°C at 10°C increments in order to quantify durability of a product at high temperature.

IC Burn-in Chamber

 

 

 

 

Burn-In Ovens - Two electronic component burn-in ovens (maximum temperature of 125C) with test racks allow burn-in under bias for accelerated life testing of components, modules and IC’s, dependent on socket trays and load cards.

Freeze/Thaw simulator - This equipment simulates a product stored in a vehicle overnight at –23°C; taken into a warm building (22°C) and then operated without an opportunity to thaw in order to simulate moving a product from a freezing truck into a home.

Extended Life Testing - Locates any early wear-out mechanisms that can be corrected in future designs.  Environment simulates long-term life via power and temperature cycling (between 25°C and 40°C ambient) interspersed during the day and 40°C for 15 hours overnight.

Long term humidity - A tool to evaluate the properties of material and components as they are influenced by the absorption and diffusion of moisture and moisture vapor.  A variety of programmable temperature/humidity chambers of varying sizes with capability of applying voltage to the device under evaluation are available:

  • Three Blue M Chambers - typical operating conditions 40°C at 95% Relative Humidity  and  85°C at 85% Relative Humidity (85/85).
  • A Walk-in Weber Chamber, inside dimensions 7’ x 6’ x 7.5’, capable of handling large products, such as a projection TV, while in full operation.
  • A Cincinnati Sub Zero Z32, inside chamber dimension 3’ x 3’ x 3’.

            

   Cincinnati Sub-Zero Z32 Programmable Temperature / Humidity Chamber

 

 

Storage Testing - The purpose of this test is to simulate the storage conditions of a product.  It is intended to determine robustness and resistance of product to extremes of high/low temperatures and humidity.

Electrostatic Discharge (ESD) - Simulates Electrostatic Discharge (ESD) up to 15 kV for air-discharges and up to 9 kV for contact discharges with a 150pF/330Ω discharge network per the IEC61000-4-2 (IEC 801-2, 1991) standard.

 

 

Salt Mist - Equipment subjects product to a salt mist which is formed from a 0.35% salt and de-ionized water solution per the Contaminations Studies Laboratories, Inc standard.  This is recommended for product used in an unprotected and/or coastal environment.

Salt Mist Evaluation

 

 

 

Power Line/Antenna/Telco Surge - Equipment simulates power line or antenna voltage transients which occur because of lightning and power distribution abnormalities. This equipment applies a high voltage discharge to a device or component in a powered on or off state with a voltage potential of approximately 1.0kVdc to 6kVdc.  [Standard Power Line, Antenna, and Telco Surges (Combination Wave) IEC61000-4-5; IEEE C62.41-1991.]

 

Reduced Pressure Chamber - Altitude Chamber simulates an altitude up to approximately 40,000 Feet. (140.0mmHg). It features three viewing ports and access ports for coax cable, AC line voltage and High Voltage. The chamber’s interior dimensions are 72”W x 48”D x 48”H.
 
 
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