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3

Pre-Irradiation

IRHYB597034CM

International Rectifier Radiation Hardened MOSFETs are tested to verify their radiation hardness capability.

The hardness assurance program at International Rectifier is comprised of two radiation environments.

Every manufacturing lot is tested for total ionizing dose (per notes 5 and 6) using the TO-3 package. Both

pre- and post-irradiation performance are tested and specified using the same drive circuitry and test

conditions in order to provide a direct comparison.

Radiation Characteristics

1. Part number IRHYB597034CM

2. Part number IRHYB593034CM

Fig a. Single Event Effect, Safe Operating Area

International Rectifier radiation hardened MOSFETs have been characterized in heavy ion environment for

Single Event Effects (SEE). Single Event Effects characterization is illustrated in Fig. a and Table 2.

For footnotes refer to the last page

Table 2. Single Event Effect Safe Operating Area

Ion

LET

Energy

Range

VDS (V)

(MeV)

(µm) @VGS=0V @VGS=5V @VGS=10V @VGS=15V @VGS=20V

Br

37.9

252.6

33.1

- 60

- 60

- 60

- 60

- 60

I

59.7

314

30.5

- 60

- 60

- 60

- 45

- 25

Au

82.3

350

28.4

- 60

- 60

- 60

—

—

-70

-60

-50

-40

-30

-20

-10

0

0

5

10

15

20

VGS

Br

I

Au

Parameter

Units

Test Conditions

Min

Max

Min

Max

Drain-to-Source Breakdown Voltage

-60

—

-60

—

V

Gate Threshold Voltage

-2.0

-4.0

-2.0

-4.0

Gate-to-Source Leakage Forward

—

-100

—

-100

nA

Gate-to-Source Leakage Reverse

—

100

—

100

Zero Gate Voltage Drain Current

—

-10

—

-10

µA

Static Drain-to-Source

Ã

—

0.087

—

0.087

Ω

On-State Resistance (TO-3)

Static Drain-to-Source On-State

—

0.087

—

0.087

Ω

Resistance(Low-OhmicTO-257AA)

Diode Forward Voltage

Ã

—

-5.0

—

-5.0

V

Ã