Product specification
Supersedes data of 1998 Jul 29
2003 Sep 26
Page 2
Philips SemiconductorsProduct specification
VHF push-pull power MOS transistorBLF368
FEATURES
• High power gain
• Easy power control
• Good thermal stability
• Gold metallization ensures
excellent reliability.
DESCRIPTION
Dual push-pull silicon N-channel
enhancement mode vertical D-MOS
transistor, designed for broadcast
transmitter applications in the VHF
frequency range.
The transistor is encapsulated in a
4-lead SOT262A1 balanced flange
package, with twoceramic caps. The
mounting flange provides the
common source connection for the
transistors.
PINNING - SOT262A1
PINDESCRIPTION
1drain 1
2drain 2
3gate 1
4gate 2
5source
PIN CONFIGURATION
dbook, halfpage
12
g
2
g
1
55
Top view
34
MSB008
MBB157
d
2
s
d
1
Fig.1 Simplified outline and symbol.
CAUTION
This product is supplied in anti-static packing to prevent damage caused by
electrostaticdischargeduringtransportandhandling.Forfurther information,
refer to Philips specs.: SNW-EQ-608, SNW-FQ-302A, and SNW-FQ-302B.
WARNING
Product and environmental safety - toxic materials
This product contains beryllium oxide. The product is entirely safe provided
that the BeO discs are not damaged. All persons who handle, use or dispose
of this product should be aware of its nature and of the necessary safety
precautions. After use, dispose of as chemical or special waste according to
the regulations applying at the location of the user. It must never be thrown
out with the general or domestic waste.
QUICK REFERENCE DATA
RF performance at Th=25°C in a push-pull common source test circuit.
MODE OF OPERATION
f
(MHz)
V
(V)
DS
P
(W)
∆G
L
G
p
(dB)
p
(dB)
(note 1)
η
(%)
D
CW, class-AB22532300>12>1>55
typ. 13.5typ. 0.4typ. 62
Note
1. Assuminga third order amplitude transfer characteristic, 1 dB gaincompressioncorresponds with 30% synchronized
input/25% synchronized output compression in television service (negative modulation, CCIR system).
2003 Sep 262
Page 3
Philips SemiconductorsProduct specification
VHF push-pull power MOS transistorBLF368
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
Per transistor section unless otherwise specified
V
DS
V
GS
I
D
P
tot
T
stg
T
j
THERMAL CHARACTERISTICS
SYMBOLPARAMETERCONDITIONSVALUEUNIT
R
th j-mb
R
th mb-h
drain-source voltage−65V
gate-source voltage−±20V
drain current (DC)−25A
total power dissipation Tmb≤ 25 °C total device; both sections equally loaded −500W
storage temperature−65+150°C
junction temperature−200°C
thermal resistance from junction to mounting base totaldevice;bothsections
0.35K/W
equally loaded
thermal resistance from mounting base to
heatsink
total device;both sections
equally loaded
0.15K/W
2
10
handbook, halfpage
I
D
(A)
(1)
10
1
110
(1) Current in this area may be limited by R
(2) Tmb=25°C.
Total device; both sections equally loaded.
Fig.2 DC SOAR.
MRA933
(2)
2
.
(V)
10
V
DS
DSon
500
handbook, halfpage
P
tot
(W)
400
300
200
100
0
04080160
(1) Continuous operation.
(2) Short-time operation during mismatch.
Total device; both sections equally loaded.
1. Assuming a third order amplitude transfer characteristic, 1 dB compression corresponds with 30% synchronized
input/25% synchronized output compression in television service (negative modulation, CCIR system).
Ruggedness in class-AB operation
The BLF368 is capable of withstanding a load mismatch corresponding to VSWR = 10: 1 through all phases under the
following conditions: V
1. American Technical Ceramics (ATC) capacitor, type 100B or other capacitor of the same quality.
2. The striplines L1, L3 to L11, L16 to L22 and L24 are on a double copper-clad printed circuit board with glass
microfibre PTFE dielectric (εr= 2.2); thickness1⁄16inch; thickness of copper sheet 2 × 35 µm.
3. Semi-rigid cables L2 and L23 are soldered on to striplines L1 and L24.
4. A copper strap, thickness 0.8 mm, is soldered over the complete striplines L16 to L21 to avoid overheating by large
RF currents.
2003 Sep 2610
Page 11
Philips SemiconductorsProduct specification
VHF push-pull power MOS transistorBLF368
handbook, full pagewidth
+V
L1
hollow rivets
L3
DD1
C17
C20
L20
C28
L21
130
C29
C30
copper strap
L23
L22
hollow rivets
L24
MGP213
119
100
to R1, R6
R9
L2
IC1
C34
C1
C3
C2
C11
C8
L4
L5
slider R1
C5
slider R6
copper strap
C31
C32
C33
C9
R2
C6
R3
L8
L6
C4
L7
L9
R4
R5
C10
C7
C18
L10
C13
L13
C25
L16
C23
C22
C24
L17
C26
L11
L14
C19
C14
C12
L12
R7
L12
hollow rivet
L18
L19
L15
R8
L15
C15 C21
C16
+V
DD1
C27
+V
DD2
The circuit and components are situatedononesideofthePTFEfibre-glassboard, the other side being fully metallized, to serve as a ground plane.
Earth connections are made by means of copper straps and hollow rivets for a direct contact between upper and lower sheets.
Dimensions in mm.
Fig.13 Component layout for 225 MHz class-AB test circuit.
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
5.85
5.58
c
0.16
0.10
0.006
0.004
Db
22.17
21.46
0.873
0.845
D
1
21.98
21.71
0.865
0.855
EE
eU
10.27
11.05
10.05
0.404
0.435
0.396
UNIT
mm
inches
A
5.77
5.00
0.227
0.197
0.230
0.220
43
b
0510 mm
scale
F
1
10.29
10.03
0.405
0.396
1.78
1.52
0.070
0.060
21.08
19.56
0.830
0.770
H
w
3
M
H
1
17.02
16.51
0.670
0.650
B
C
p
w
1
p
Q
3.28
2.85
3.02
2.59
0.129
0.112
0.119
0.102
c
E
1
M M M
AB
Q
qw
U
1
34.17
27.94
33.90
1.345
1.335
w
2
9.91
9.65
0.390
0.380
E
w
3
2
1
0.250.25 0.51
0.0100.010 0.0201.100
OUTLINE
VERSION
SOT262A1
IEC JEDEC EIAJ
REFERENCES
2003 Sep 2616
EUROPEAN
PROJECTION
ISSUE DATE
99-03-29
Page 17
Philips SemiconductorsProduct specification
VHF push-pull power MOS transistorBLF368
DATA SHEET STATUS
LEVEL
DATA SHEET
STATUS
(1)
PRODUCT
STATUS
(2)(3)
DEFINITION
IObjective dataDevelopmentThis data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
IIPreliminary data QualificationThis data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
IIIProduct dataProductionThis data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Relevant changes will
be communicated via a Customer Product/Process Change Notification
(CPCN).
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
3. For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
DEFINITIONS
DISCLAIMERS
Short-form specification The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
attheseoratany other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
norepresentationor warranty that such applications will be
suitable for the specified use without further testing or
modification.
Life support applications These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductorscustomersusing or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes Philips Semiconductors
reserves the right to make changes in the products including circuits, standard cells, and/or software described or contained herein in order to improve design
and/or performance. When the product is in full production
(status ‘Production’), relevant changes will be
communicated via a Customer Product/Process Change
Notification (CPCN). Philips Semiconductors assumes no
responsibility or liability for the use of any of these
products, conveys no licence or title under any patent,
copyright, or mask work right to these products, and
makes no representations or warranties that these
products are free from patent, copyright, or mask work
right infringement, unless otherwise specified.
2003 Sep 2617
Page 18
Philips Semiconductors – a w orldwide compan y
Contact information
For additional information please visit http://www.semiconductors.philips.com.Fax: +31 40 27 24825
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands613524/04/pp18 Date of release: 2003 Sep 26Document order number: 9397 750 11602
SCA75
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