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| THE DIVISIONS |
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| Smartpack Performance and Package Data |
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| Smartpack was conceived as a unit
specifically intended for commercial, industrial and professional applications. However,
it is now being regarded as suitable for high reliability military applications. To prove
its capability in this role, a batch of twin pack modules were built with just one medium
voltage power MOSFET mounted on each copper island.
Subdivided groups were each subject to a
series of tests to limits defined by MIL750 or MIL883 procedures for flight applications.
MOSFETs were used for the trials since these devices readily show any deterioration in
package performance. The devices passed all their respective tests. Please refer to the
chart below for full details.
| Test |
MIL-STD |
High Temperature Storage (HTS).
1000 hours at 150°C |
883-1008.1
750-1032.1 |
High Temperature Reverse Bias (HTRB).
1000 hours at 150°C |
750-1039 |
High Temperature Gate Bias (HTGB).
1000 hours at 85°C |
750-1039 |
High Humidity High Temperature Gate Bias.
1000 hours at 85% RH and 85°C |
750-1039 |
All devices in the above group tested and measured at
0, 168, 500 and 1000 hours. |
| Test |
MIL-STD |
| Moisture Resistance (test condition AD) |
883 1044-2
750 2056 |
| Temperature Cycling -45 to +125°C |
750 1021-1 |
| Test AD condition B - measured after 100 cycles |
883 1011-2 |
| Thermal Shock - cycle -15 to +100°C |
750 1056-1 |
| Test AD condition A in three directions |
883 2001-1 |
| Salt Spray - 24 hrs salt spray, 24 hrs at ambient then 24 hrs salt spray, clean and test |
883 1009-8 |
| Low Pressure Test - 50,000 ft altitude - condition D |
883 1001 |
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| Type |
Body |
Pins |
Guide Weight |
| Case 6 |
51 x 87 mm |
6.35 x 20 x 0.8mm |
170gms |
| Case 4 |
51 x 57 mm |
6.35 x 20 x 0.8mm |
114gms |
| Case 3 |
24 x 87 mm |
6.35 x 20 x 0.8mm |
185gms |
| Case 2 |
24 x 57 mm |
6.35 x 20 x 0.8mm |
55.5gms |
| Body Thickness |
14mm overall, 10mm excluding isolation barriers |
| Flame Resistance |
Spec U. 94 (V-0), Non flammable |
| Nominal Continuous DC |
Screw terminal |
55A at 25°C |
| Fast-on terminal |
55A at 25°C |
| Solder terminal |
35A at 25°C |
| Maximum Voltage |
Pin to pin with no silicon inside |
3000V (Tested) |
| Heatsink Fixing Options |
Bolt and nut through |
| Insert bush with countersunk screw from the
heatsink underside |
| Insert stud to top or bottom of the
Smartpack as required |
| Optional PCB support pillar to allow PCBs
to be directly mounted on Smartpack leads |
| Package can also be attached with pop
rivets |
| Torque Limits |
Torque limit = 2Nm |
| Moisture Ingress |
C6 = 0.03cc after 24 hours @ 6.12atms. (90psi). (Spec Grav.
of R.O. Water = 1) |
| Standard Lead Fixings |
Screw, Fast-on, Solder |
| Optional Lead Fixings |
Horizontal, Vertical, Custom |
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