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Telcordia Qualifications

II-VI Marlows’ thermoelectric coolers for the telecommunication industry are fully compliant with Telcordia®1 GR-468-CORE Issue 2 (Sept. 2004).

Qualification tests performed at II-VI Marlow are outlined in the table below. A Telcordia qualification report for Marlow Industries’ telecommunication coolers is available upon request.

Telcordia qualification tests performed by II-VI Marlow:

During the Mechanical Integrity tests, a mass is attached to the top of the thermoelectric cooler (TEC) to simulate the laser sub-mount.

Marlow also provides qualification testing to customer-specified requirements. Please review any specific needs with the Telecom team.

 

Category

Test

Sampling
Size

Test Details

Mechanical Integrity

Mechanical Shock

22

Condition A (500 g, 1.0 ms), 5 times/direction

Vibration

22

Condition A (20 g),
20 to 2000 to 20 Hz,
4 min/cy, 4 cy/axis

Non-Powered Environmental Stress

High Temperature Storage

22

85°C, 2000 hours

Temperature Cycling

22

-40°C/+85°C, 100 cycles

Powered Environmental Stress

Power Cycling (On/Off)

22

Hot-side T ≥max. op. T, 5000 cycles

Telcordia is a registered trademark of Telcordia Technologies, Inc. in the United States and other countries.

Reliability
Marlow has an ongoing reliability program, with TECs operating at constant current and constant hot side temperatures (aging tests). The TECs are periodically removed for performance tests, and the change in performance assessed. The rate of change with time and temperature has been modeled. These models are then used for the calculation of hazard rates, or FITS.

Given a defined life (standard 20 years), an operating temperature (typically 40°C or 50°C), and definition of failure (typically expressed as a percent change in voltage), II-VI Marlow can provide an FIT rate. Please contact one of II-VI Marlow’s engineers for your specific reliability questions or FIT calculation needs.