Neutron and Total Ionizing Dose Test Report
RDHA710FR10A1NK
October 2009
RDHA710FR10A1NK
Neutron and Total Ionizing Dose Test
Report
October 2009
International Rectifier currently does not have a DSCC approved Radiation Hardness Assurance Program for
MIL-PRF-38534.
205 Crawford St, Leominster, Ma 01453
Tel: 976-534-5776
www.irf.com
1
Neutron and Total Ionizing Dose Test Report
RDHA710FR10A1NK
October 2009
Table of Contents
Introduction .………………………………………………. 3
Summary of Results ……………………………………... 3
Test Method .……………………………………………… 3
Test Plan .…………………………………………………. 3
Test Facility .………………………………………………. 7
Test Results ………………………………………………. 8
Conclusion .……………………………………………….. 11
Appendix A – Electrical Data
Appendix B – Radiation Test Specification
Appendix C – Neutron Test Setup
205 Crawford St, Leominster, Ma 01453
Tel: 976-534-5776
www.irf.com
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Neutron and Total Ionizing Dose Test Report
RDHA710FR10A1NK
October 2009
INTRODUCTION
This test report covers the neutron fluence and ionizing radiation tests performed on the
RDHA710FR10A1NK which is a single 10 amp Solid-State-Relay in a hermetic package.
Neutron fluence and Total Ionizing Dose tests were performed to determine the effects
displacement damage and ionizing radiation had on the device performance. On October
14, 2009 International Rectifier characterized this device for ionizing radiation hardness and
on October 23, 2009 International Rectifier characterized this device for neutron radiation
hardness at the University of Massachusetts, Nuclear Reactor Laboratory Facility using their
Fast Neutron Irradiator and Gamma Cave facilities.
SUMMARY OF RESULTS
All of the test samples passed the post radiation test requirements for fluence levels up to
1.0E12 n/cm
2
and 100K Rad(Si). The results show a 50% average increase in the device’s
turn on propagation delay and a 30% average decrease in the device’s turn off propagation
delay after exposure to total ionizing dose and neutron radiation. No other significant
changes in device performance were noted for either neutron or total ionizing radiation
exposure.
TEST METHOD
The test methods used in the development of the Test Plan was MIL-STD-883, Methods
1017 Neutron Irradiation and 1019 Ionizing Radiation. These methods established the basic
requirements for the performance and execution of the tests.
TEST PLAN
On October 14, 2009 two samples (serial numbers 72 and 76) were exposed to Total
Ionizing Dose radiation under an “ON” biased condition and two samples (serial numbers 92
and 85) were exposed to Total Ionizing Dose radiation under an “OFF” biased condition.
Serial number 70 was maintained as a control sample and was not exposed to any
radiation.
The same four samples (serial numbers 72, 76, 85, and 92) were exposed to neutron
radiation on October 23, 2009 in an un-biased state with all device leads shorted in
conductive foam and contained in a conductive bag. Post radiation testing of the devices
occurred after the decay of radioactivity of the devices reached an acceptable safe level
determined by the facilities personnel. The rate of decay was dependent on the amount of
exposure to neutrons and the package materials. The devices were contained in a 20 +/-
10C environment to minimize the effects due to annealing.
The Radiation Test Specification is included in Appendix B. The testing occurred in the
following manner:
205 Crawford St, Leominster, Ma 01453
Tel: 976-534-5776
www.irf.com
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Neutron and Total Ionizing Dose Test Report
RDHA710FR10A1NK
October 2009
Test Plan Outline
1.0
Purpose
The purpose of this test is to characterize and establish displacement damage and total ionizing dose radiation effects
for International Rectifier’s single solid state relay devices
.
2.0
Test Responsibility
International Rectifier shall be responsible for conducting the tests, which shall be performed at the University of
Massachusetts Research Reactor facility. International Rectifier shall be responsible for the final Test Report.
3.0
Test Facility
3.1 Nuclear Reactor
3.1.1 The University of Massachusetts Research Reactor shall be used to provide the necessary Neutron
beam and energy. University of Massachusetts Research Reactor (UMRR) shall provide adequate
dosimetry for verification of the neutron beam parameters.
3.1.2 The University of Massachusetts Research Reactor shall be used to provide the source for Gamma
radiation. UMRR will also provide information on dose rate, total dose, irradiation test times and dosimetry
for this evaluation.
3.2 Test Equipment
The necessary test equipment including interface board, cables, power supplies, measurement system, etc.
shall be provided by International Rectifier.
3.3 Sample Size
Five samples shall be randomly selected. One of which shall be maintained as a control. The samples used for
the Total Ionizing Dose radiation exposure shall also be subjected to Neutron radiation exposure.
4.0
Test Device
4.1 The following device is planned for this characterization:
a. RDHA710FR10A1NK
4.2 All devices shall be subjected to a minimum of 96hrs of burn-in and verified for correct electrical
performance prior to arrival at UMRR.
4.3 One device shall be biased in the “ON” state and one device shall be biased in the “OFF” state during the
Total Ionizing Dose irradiation.
4.4 The device leads will be shorted in conductive foam and all parts shall be contained inside a conductive
ESD bag during Neutron irradiation.
5.0
Test Method
5.1 MIL-STD-883, Method 1017 shall be used to establish procedure for all Neutron testing described herein.
5.2 MIL-STD-883, Method 1019 shall be used to establish procedure for all Total Ionizing Dose testing
described herein.
6.0
Radiation Source
6.1 The nuclear reactor at Lowell, Mass is capable of providing fast neutron flux level > 10
11
n/cm
2
– s with
relatively low thermal fluence and gamma irradiation. The Fast Neutron Irradiator (FNI) offers near uniform
spectrum over a large cross-sectional area (12
”
x 12
”
x 6
”
). The dosimetry system used to verify the radiation
exposure was P-32, ASTM E-265.
205 Crawford St, Leominster, Ma 01453
Tel: 976-534-5776
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Neutron and Total Ionizing Dose Test Report
RDHA710FR10A1NK
October 2009
6.2 The Gamma Cave is an irradiation room inside this facility having an
equi-dimensional volume of 512 cubic feet. A wide range of dose rates, 1Gray (100 rad) per hour to 10,000
Gray (1 Mrad) per hour, is available with the CO
60
source. Several small ports penetrate one shielding wall to
provide access for instrumentation cables.
7.0
Record Keeping
7.1 The Reactor facility shall provide dosimetry data for the Fast Neutron Irradiator. IR will be responsible for
collecting and compiling the test data.
7.2 The Reactor facility shall provide dosimetry data for the CO
60
. Each exposure run shall be cataloged with
the appropriate lot number in order to maintain correlation to the appropriate data set. IR will be responsible
for collecting and compiling the test data.
8.0
Test Procedure
International Rectifier shall control the following test procedure, based on Test Methods 1017 and 1019. The neutron
fluence and total ionizing dose levels the product is exposed to shall be per this test plan.
The facility personnel shall be responsible for loading and moving the device container in the Fast Neutron Irradiator.
They shall also be responsible for loading, unloading, and moving the Cobalt source for the Total Ionizing Dose
exposures.
The Total Ionizing Dose exposure levels shall be 50K, 100K, and 150K Rad(Si).
Total Ionizing Dose Test Procedure – Table 1
Description
Conditions
Pre test all devices prior to radiation exposure.
Perform empty board continuity and leakage
verification on radiation bias board.
Load one device in the “ON” bias socket and one
device in the “OFF” bias socket on the radiation bias
board.
Place radiation bias board in the test rack in the
Gamma Cave.
Turn on the bias power supplies and measure the
signals at the DUT sites for proper levels.
Secure the chamber and expose the samples to the
Facilities personnel
specified dose.
50K Rad(Si) exposure step
Remove devices at completion of exposure time
Facilities personnel
Test devices – Read and Record data – within 1 hour
of removal from the chamber
Repeat steps 2 thru 7 for exposure level 2
50K Rad(Si) exposure step
This exposure must start within 2 hours of the
completion of the last exposure
Repeat steps 2 thru 7 for exposure level 2
50K Rad(Si) exposure step
This exposure must start within 2 hours of the
completion of the last exposure
Place the “ON” bias sample back on the radiation bias
If the devices fail post exposure
board under the same bias for a minimum of 24 hours
test they must be subject to
at 24C +/-6C. Place the “OFF” bias sample back on the extended room temperature
radiation bias board under the same bias for a
anneal per Method 1019, 3.11
minimum of 24 hours at 24C +/-6C.
Test devices – Read and Record data – within 4 hours
of removal of the bias
Place the “ON” bias sample back on the radiation bias
Subject the devices to MOS
board under the same bias for 168 hours +/-12 hours at accelerated anneal per Method
100C +5/-0C. Place the “OFF” bias sample back on the 1019, 3.12
radiation bias board under the same bias for 168 hours
Step
1
2
3
4
5
6
7
8
9
10
11
12
13
205 Crawford St, Leominster, Ma 01453
Tel: 976-534-5776
www.irf.com
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