NUMBER

GS-12-452

TYPE

PRODUCT SPECIFCATION

TITLE

PAGE

REVISION

5 of 13

C

AUTHORIZED BY

DATE

M. Gray

2009-10-05

CLASSIFICATION

UNRESTRICTED

Copyright FCI

Form E-3334

Rev F

GS-01-001

5.4

Current Rating (signal and power IMLA’s to be tested separately)

5.4.1

General Criteria

•

Test Specification: EIA 364-70

•

Ambient Temperature: 25˚C

•

Airflow: None (still-air)

5.4.2

Signal Contacts

•

The metal organizer must be removed for all signal contact measurements because

several positions are shorted together by the metal organizer.

•

Measure temperature versus applied current

•

All contacts powered

•

Thermocouple attachment: Mechanically attached to the base of the receptacle mating beams.

•

Thermocouple location: One thermocouple on a central position on each of the two middle

columns (two thermocouples per tested assembly)

•

Copper trace weight: 1oz on one external layer, connector side.

•

The temperature-rise above ambient shall not exceed 30˚C at 0.25A per contact for backpanel

and orthogonal configurations, and 0.20A per contact for coplanar configurations.

5.4.3

Power Contacts

•

The metal organizer is to remain assembled for power contact evaluation. There is no

shorting between power contacts and the metal organizer.

•

Measure temperature versus applied current

•

Powered contact configurations to be qualified are represented in the supporting table.

•

Thermocouple attachment: Mechanically attached to the base of the receptacle mating beams.

•

Thermocouple location: One thermocouple on a central position of each column tested.

Columns with thermocouples are noted in the supporting table

•

Copper trace weight: 2oz on one external layer, opposite connector side.

•

The temperature-rise above ambient shall not exceed 30˚C at the current levels noted in the

supporting table. Actual output curves shall be plotted up to 50˚C T-rise.

TEST CONFIGURATIONS

Total number of columns in test sample: 12

Number of power contacts within each column: 6

IMLA Columns

Fully Powered

Columns with

Thermocouples

Current Rating Per

Contact

Current Rating Per

Column

#1

#1

6.00A

36.0A

#1, #2

#1, #2

4.50A

27.0A

All

#6, #7

2.25A

13.5A

Current-rating per column drops as the number of adjacent powered columns increases. This is

due to the cumulative heating effect of multiple columns powered in still-air test conditions.

PDM: Rev:C

Released

.

STATUS:

Printed: Nov 28, 2010