NEC 2SK2597

PRELIMINARY DATA SHEET
SILICON POWER MOS FIELD EFFECT TRANSISTOR
2SK2597
N-CHANNEL SILICON POWER MOSFET
FOR BASE STATION OF 900 MHz BAND CELLULAR PHONE
POWER AMPLIFICATION
PACKAGE DRAWING (Unit: mm)
• High output, high gain
PO = 100 W, GL = 13 dB (TYP.) (f = 900 MHz)
PO = 90 W, GL = 12 dB (TYP.) (f = 960 MHz)
• Low intermodulation distortion
• Covers all base station frequencies such as 800-MHz PDC
and GSM
• High-reliability gold electrodes
• Hermetic sealed package
• Internal matching circuit
• Push-pull structure
45˚
45˚
G1
φ 3.3±0.3
11.4±0.3
S
D1
D2
1.4
3.2±0.2 ±0.3 3.2±0.2
13.5±0.3
ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)
Unit
Drain-source voltage
VDS
60
V
Gate-source voltage
VGS
7
V
A
Drain current (D.C.)
ID
15Note
Total power dissipation
PT
290
W
Thermal resistance
Rth
0.6
˚C/W
Channel temperature
Tch
200
˚C
Storage temperature
Tstg
–65 to +150
˚C
4.7MAX.
Ratings
Note Per side
1.5±0.2
Symbol
0.1
28.0±0.3
2.5±0.2
Parameter
G2
19.4±0.4
FEATURES
21.5±0.3
G1, G2: gate
D1, D2: drain
S
: source
Flange is connected to the source.
ELECTRICAL CHARACTERISTICS (TA = 25 ˚C)
Parameter
Symbol
Condition
MIN.
TYP.
MAX.
Unit
1
µA
4
V
2
mA
Gate leakage current
IGSS
VGS = 7 V
Cut-off voltage
VGS(off)
VDS = 5 V, ID = 50 mA
Drain current
IDSS
VDS = 60 V
Mutual conductance
gm
VDS = 5 V, ID = 3 A, ∆ID = 100 mA
2.0
Output power
PO
f = 960 MHz, VDD = 30 V
80
90
W
Drain efficiency
ηD
IDQ = 200 mA × 2, Pin = 40 dBm
35
40
%
Linear gain
GL
f = 960 MHz, VDD = 30 V
IDQ = 200 mA × 2, Pin = 30 dBm
11
12
dB
Third intermodulation distortion
IM3
f = 900 MHz, ∆f = 0.1 MHz, VDD = 30 V
IDQ = 200 mA × 2, PO = 42 dBm
–38
dBc
1.5
S
The information in this document is subject to change without notice.
Document No. P10252EJ1V0DS00 (1st edition)
Date Published October 1995 P
Printed in Japan
©
1995
2SK2597
OUTPUT v.s. IM3, ID CHARACTERISTICS
THIRD ORDER INTERMODULATION DISTORTION / DRAIN
CURRENT v.s. OUTPUT POWER



Vds = 30 V
f1 = 900.0 MHz
f2 = 900.1 MHz
–20
CLASS AB

Idq = 200 mA × 2 
Idq = 500 mA × 2 
IM3
–30
ID
5
IM3 (dBc)
ID (A)
4
–40
3
2
–50
1
0
–60
28
30
32
34
36
38
40
42
44
46
48
POUT (dBm)
(AVERAGE POWER)
INPUT v.s. OUTPUT, POWER GAIN, EFFICIENCY
(1) f = 960 MHz
OUTPUT POWER / DRAIN EFFICIENCY /
POWER GAIN vs. INPUT POWER
1000
f = 960 MHz
VDD = 30 V
IDQ = 200 mA × 2
GP (dB)
η D (%)
Pout
Pout (W)
100
10
100
ηD
GP
1
.1
12
16
20
24
28
32
Pin (dBm)
2
36
40
44
10
48
52
2SK2597
(2) f = 900 MHz
OUTPUT POWER / DRAIN EFFICIENCY /
POWER GAIN vs. INPUT POWER
1000
GP (dB)
η D (%)
f = 900 MHz
VDD = 30 V
IDQ = 200 mA × 2
Pout
Pout (w)
100
100
10
ηD
GP
1
.1
12
16
20
24
28
32
36
40
10
44
48
52
Pin (dBm)
(3) f = 820 MHz
OUTPUT POWER / DRAIN EFFICIENCY /
POWER GAIN vs. INPUT POWER
1000
f = 820 MHz
VDD = 30 V
IDQ = 200 mA × 2
GP (dB)
η D (%)
Pout
Pout (W)
100
10
100
ηD
GP
1
.1
12
16
20
24
28
32
36
40
44
10
48
52
Pin (dBm)
3
2SK2597
ZIN, ZOUT
1.4
1.2
1.0
0.9
0.8
1.6
0.6
0.
0. 18
32
60
1.8
50
0.5
2.0
0.
0. 06
44
0.1
0.3 7
3
0.4
4
0.
0

 +JX
Zo 

1
0.2 9
0 .2
30
3.
0.6
4.0
0.3
1.0
0
1.
0.1
50
10
20
0.48
0.02
50
20
10
5.0
4.0
3.0
1.8
2.0
1.6
1.4
1.2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.1
0
0.2
0.2
0.27
0.23
0
1.
7
0.4
3.
0.0
5.0

X 
–J
 Zo

-15
0
14
2.0
1.8
1.6
1.4
0.9
0.7
0.6
1.0
0.37
0.13
0.8
1.2
0.36
0.14
-100
-90
0.38
0.12
0.39
0.11
0.40
0.10
0.4
1
0.0
9
44
0. 06
0.
0.5
-80
0.4
0.0 2
8
2.95 + j3.37
0.35
0.15
-110
10.36 + j4.79
-70
960
4
0.3
6
0.1
0.
0. 43
07
2.78 + j3.23
3
0.3 7
0.1
0
-12
8.86 + j5.49
-60
30
-1
900
32
0. 18
0.2
2.34 + j0.91
0
6.52 + j5.52
0.
820
-5
-
0.4
5
0.4 5
0.0
0.6
0
3.
6
0.4 4
0.0
0.8
0
1.0
4.0
ZOUT (Ω)
0.2
0.2 9
1
ZIN (Ω)
0.
0. 31
19
f (MHz)
0.2
8
0.2
2
0
-4
4
0.3
0.2 0
0
0.
-30
0.3
-20
-160
8
0.
0.2
0.26
0.24
0.6
-10
0.4
0.1
0.25
0.25
RESISTANCE COMPONENT
R
0.2
 Zo 
50
0
820
(MHz)
0
0
0.4
20
0.24
0.26
0.01
0.49
0.6
0.02
0.48
0.2
8
0.
0.23
0.27
960 (MHz)
900
10
10
820 900
960
0.49
0.01
5.0
20
ZIN
ZOUT
2
0.2
8
0.2
0.0
3
0.4
7
0.8
VDD = 30 V, IDQ = 200 mA × 2, Pin = 40 dBm
4
0.1
6
0.3
4
0
0.2 0
0.3
14
0
70
0.2
0
13
80
40
0.0
0.4 5
5
0
12
0.15
0.35
19
0. 31
0.
15
0
110
0.14
0.36
90
100
0.7
8
0.0 2
0.4
07
0. 43
0.
0.0
0 .4 4
6
9
0.0
1
0.4
0.13
0.37
0.12
0.38
0.11
0.39
0.10
0.40
2SK2597
APPLICATION CIRCUIT EXAMPLE (f = 960 MHz)
To Gate Bias
Circuit
To Drain Bias
Circuit
DUT
30 pF
2 pF
IN
20 pF
5 pF
30 pF
Teflon substrate (t = 0.8 mm)
: Through hole
To Gate Bias
Circuit
13
pF
1 pF
1 pF 5 pF
OUT
20 pF
To Drain Bias
Circuit
Notes on Handling
This product internally uses beryllie porcelain (beryllium oxide). If powder or vapor of beryllium oxide enters your
respiratory organs, you will have a difficulty in breathing, which is dangerous. Therefore, do no disassemble or
chemically process the product.
Be sure to abolish the product separately from general industrial wastes or garbage.
5
2SK2597
[MEMO]
No part of this document may be copied or reproduced in any form or by any means without the prior written
consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this
document.
NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual
property rights of third parties by or arising from use of a device described herein or any other liability arising
from use of such device. No license, either express, implied or otherwise, is granted under any patents,
copyrights or other intellectual property rights of NEC Corporation or others.
While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices,
the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or
property arising from a defect in an NEC semiconductor device, customer must incorporate sufficient safety
measures in its design, such as redundancy, fire-containment, and anti-failure features.
NEC devices are classified into the following three quality grades:
“Standard“, “Special“, and “Specific“. The Specific quality grade applies only to devices developed based on
a customer designated “quality assurance program“ for a specific application. The recommended applications
of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each
device before using it in a particular application.
Standard: Computers, office equipment, communications equipment, test and measurement equipment,
audio and visual equipment, home electronic appliances, machine tools, personal electronic
equipment and industrial robots
Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster
systems, anti-crime systems, safety equipment and medical equipment (not specifically designed
for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life
support systems or medical equipment for life support, etc.
The quality grade of NEC devices in “Standard“ unless otherwise specified in NEC's Data Sheets or Data Books.
If customers intend to use NEC devices for applications other than those specified for Standard quality grade,
they should contact NEC Sales Representative in advance.
Anti-radioactive design is not implemented in this product.
M4 94.11
2