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ORCA 2T15A Heavy Ion Test

Brookhaven National Labs

August, 2001

Two ORCA 2T15A devices were retested at Brookhaven National Lab.  The primary goal of this test was a Single Event Latchup (SEL) evaluation.

A previous test in July, 2001, showed latchup.  A post analysis of the test showed an error in the contractor's board with respect to the remote sensing on the power supply.   As a result, we repaired the board and retested.  The outcome of the test was not significantly different other than the observation of very large latchup currents, in some cases exceeded 2A.

Part Markings

OR2T15A-3
S240 99870
9833K88A

9987088A
2T15A 9832K

Device Bias

V_CCIO = 5.5 VDC, V_CCCore = 3.6 VDC for the maximum case
V_CCIO = 4.5 VDC, V_CCCore = 3.0 VDC for the minimum case

Device Temperature

Nominal

Run #	DeviceID	Ion	Energy (MeV)	Range um	LET(Si) MeV.cm2/mg	Tilt (deg)	Voltage	Comments
385	orca1	Cl-35	95	25.96	15.47	0	5.5/3.6	Latch: Increase in steps up to 1A
386	orca1	Cl-35	95	25.96	15.47	0	5.5/3.6	Latch: Two steps, first up 20 mA then up to 1A
380	orca1	Cl-35	95	12.98	30.94	60	5.5/3.6	Latch
381	orca1	Cl-35	95	12.98	30.94	60	4.5/3.0	Latch
382	orca1	Cl-35	95	12.98	30.94	60	4.5/3.0	Latch
383	orca1	Cl-35	95	12.98	30.94	60	4.5/3.0	Latch @ ~ 200 mA
384	orca1	Cl-35	95	12.98	30.94	60	4.5/3.0	Latch @ ~200 mA
378	orca2	Cl-35	95	12.98	30.94	60	5.5/3.6	Latch: Overcurrent @ 800 mA
379	orca2	Cl-35	95	12.98	30.94	60	5.5/3.6	Latch: overcurrent, overvoltage
298	orca2	Br-81	278.5	36.03	37.46	0	5.5/3.6	Latch: Overcurrent @ 800 mA
299	orca2	Br-81	278.5	36.03	37.46	0	5.5/3.6	Latch: Overcurrent @ 2A

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Last Revised: January 19, 2003
Digital Engineering Institute
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