2N3439CSM4R
2N3440CSM4R
Prelim. 11/98Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612. e-mail sales@semelab.co.uk
Website http://www.semelab.co.uk
HIGH VOLTAGE, MEDIUM POWER, NPN
TRANSISTOR IN A
HERMETICALLY SEALED
CERAMIC SURFACE MOUNT PACKAGE
FOR HIGH RELIABILITY APPLICATIONS
FEATURES
• Hermetic Ceramic 4 pin Surface Mount
Package - LCC3
High Voltage Small Signal Type
Full Screening Options Available
“R” Denotes Reverse Pinning
APPLICATIONS:
The 2N3439CSM4 and 2N3440CSM4 are high
voltage silicon epitaxial planar transistors mounted
in the popular 4 pin ceramic surface mount
hermetically sealed package. These products are
specifically intended for use in High reliability
systems and can be ordered with a full range of
screening options from standard Military
(equivalent to CECC Full Assessment Level)
through all options up to full space flight level.
V
CBO
Collector – Base Voltage (I
E
= 0)
V
CEO
Collector – Emitter Voltage (I
B
= 0)
V
EBO
Emitter – Base Voltage (I
B
= 0)
I
C
Collector Current.
I
B
Base Current.
P
tot
Total Power Dissipation at T
amb
= 25°C with product
mounted on a suitable PCB to provide a heat path.
T
stg
Storage Temperature.
T
j
Maximum Junction Temperature.
450V
350V
7V
1A
0.5A
0.5W
300V
250V
7V
1A
0.5A
0.5W
MECHANICAL DATA
Dimensions in mm (inches)
ABSOLUTE MAXIMUM RATINGS
LCC3 PACKAGE
Underside View
PAD 1 – Collector
PAD 2 – Emitter
PAD 3 – N/C
PAD 4 – Base
1
23
4
5.59 ± 0.13
(0.22 ± 0.005)
0.23
(0.009)
rad.
1.02 ± 0.20
(0.04 ± 0.008)
2.03 ± 0.20
(0.08 ± 0.008)
1.40 ± 0.15
(0.055 ± 0.006)
0.25 ± 0.03
(0.01 ± 0.001)
0.23
(0.009)
min.
1.
27 ± 0.
05
(
0
.
0
5 ± 0.
002
)
3.
81 ± 0.
13
(
0
.
1
5 ± 0.
00
5)
0.
64 ± 0.
08
(
0
.
025 ± 0.
003)
2N3439CSM4 2N3440CSM4
–65 to +200°C
+200°C