FSS234D, FSS234R
6A, 250V, 0.600 Ohm, Rad Hard,
SEGR Resistant, N-Channel Power MOSFETs
December 2001
Features
• 6A, 250V, r
• Total Dose
Description
= 0.600Ω
The Discrete Products Operation of Fairchild Corporation has
developed a series of Radiation Hardened MOSFETs specifi-
cally designed for commercial and military space applications.
DS(ON)
- Meets Pre-RAD Specifications to 100K RAD (Si)
Enhanced Power MOSFET immunity to Single Event Effects
(SEE), Single Event Gate Rupture (SEGR) in particular, is
combined with 100K RADS of total dose hardness to provide
devices which are ideally suited to harsh space environments.
The dose rate and neutron tolerance necessary for military
applications have not been sacrificed.
• Single Event
- Safe Operating Area Curve for Single Event Effects
2
- SEE Immunity for LET of 36MeV/mg/cm with
V
up to 80% of Rated Breakdown and
of 10V Off-Bias
DS
V
GS
The Fairchild portfolio of SEGR resistant radiation hardened
MOSFETs includes N-Channel and P-Channel devices in a
variety of voltage, current and on-resistance ratings.
Numerous packaging options are also available.
• Dose Rate
- Typically Survives 3E9 RAD (Si)/s at 80% BV
DSS
- Typically Survives 2E12 if Current Limited to I
DM
This MOSFET is an enhancement-mode silicon-gate power
field-effect transistor of the vertical DMOS (VDMOS) struc-
ture. It is specially designed and processed to be radiation
tolerant. The MOSFET is well suited for applications exposed
to radiation environments such as switching regulation,
switching converters, motor drives, relay drivers and drivers
for high-power bipolar switching transistors requiring high
speed and low gate drive power. This type can be operated
directly from integrated circuits.
• Photo Current
- 4.0nA Per-RAD(Si)/s Typically
• Neutron
- Maintain Pre-RAD Specifications
for 1E13 Neutrons/cm
2
2
- Usable to 1E14 Neutrons/cm
Reliability screening is available as either commercial, TXV
equivalent of MIL-S-19500, or Space equivalent of
MIL-S-19500. Contact Fairchild for any desired deviations
from the data sheet.
Ordering Information
RAD LEVEL SCREENING LEVEL PART NUMBER/BRAND
10K
Commercial
TXV
FSS234D1
FSS234D3
FSS234R1
FSS234R3
FSS234R4
10K
Symbol
D
100K
100K
100K
Commercial
TXV
Space
G
Formerly available as type TA17638.
S
Package
TO-257AA
S
D
G
CAUTION: Beryllia Warning per MIL-S-19500
refer to package specifications.
©2001 Fairchild Semiconductor Corporation
FSS234D, FSS234R Rev. B