Product specification
Supersedes data of 1997 Dec 15
2003 Jul 22
Page 2
Philips SemiconductorsProduct specification
HF/VHF power MOS transistorBLF175
FEATURES
• High power gain
• Low intermodulation distortion
• Easy power control
• Good thermal stability
• Withstands full load mismatch
• Gold metallization ensures
excellent reliability.
DESCRIPTION
Silicon N-channel enhancement
mode vertical D-MOS transistor
designed for large signal amplifier
applicationsintheHF/VHF frequency
range.
Thetransistorhas a4-lead,SOT123A
flange package, with a ceramic cap.
All leads are isolated from the flange.
Amarkingcode, showinggate-source
voltage (VGS) information is provided
for matched pair applications. Refer
to the handbook 'General' section for
further information.
PIN CONFIGURATION
ok, halfpage
1
23
4
MSB057
g
MBB072
d
s
Fig.1 Simplified outline and symbol.
CAUTION
This product is supplied in anti-static packing to prevent damage caused by
electrostaticdischarge duringtransport andhandling.For furtherinformation,
refer to Philips specs.: SNW-EQ-608, SNW-FQ-302A, and SNW-FQ-302B.
PINNING - SOT123A
PINDESCRIPTION
1drain
2source
3gate
4source
Product and environmental safety - toxic materials
This product contains beryllium oxide. The product is entirely safe provided
that theBeO disc isnot damaged. All personswho handle, useor dispose of
this product should be aware of its nature and of the necessary safety
precautions. After use,dispose of as chemical orspecial waste according to
WARNING
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 common source test circuit.
RF performance in SSB operation in a common source circuit.
f
= 28.000 MHz; f2= 28.001 MHz.
1
P
L
(W)
0 to 8 (PEP)2850800> 24
f
(MHz)
V
(V)
DS
I
DQ
(mA)
G
p
(dB)
typ. 28
d
3
(1)
(dB)
>−40
typ. −44
d
5
(1)
(dB)
<−40
typ. −64
R
(Ω)
24
24
GS
Note
1. Maximum values at drive levels within the specified PEP values for either amplified tone. For the peak envelope
power the values should be decreased by 6 dB.
R10.4 W metal film resistor24 Ω
R20.4 W metal film resistor1500 Ω
R30.4 W metal film resistor10 Ω
T14 : 1 transformer; 18 turns twisted
pair of 0.25 mm copper wire with
10 twists per cm, wound on a grade
4C6 toroidal core
39 pF
24 pF
86 nHlength 3.3 mm;
int. dia. 5 mm;
leads 2 × 2 mm
20 µHlength 30 mm;
int. dia. 5 mm
int. dia. 5 mm;
leads 2 × 3 mm
dimensions
9 × 6 × 3mm
4330 030 30031
4312 020 36640
4322 020 97171
Note
1. American Technical Ceramics (ATC) capacitor, type 100B or other capacitor of the same quality.
2003 Jul 229
Page 10
Philips SemiconductorsProduct specification
HF/VHF power MOS transistorBLF175
handbook, full pagewidth
mounting screw
strap
100
90
strap
L3
+V
R3
DD
C8
L4
C9
MGP074
+V
G
L1
C3
R1
T1
C2
C1
R2
Dimensions in mm.
The circuit and components are situated on one side of the epoxy fibre-glass board, the other side being fully metallized to serve as earth.
Earth connections are made by means of hollow rivets and straps at the two edges and under the source contacts.
C6
L2
C7
C5
C4
Fig.14 Component layout for 28 MHz class-A test circuit.
2003 Jul 2210
Page 11
Philips SemiconductorsProduct specification
HF/VHF power MOS transistorBLF175
APPLICATION INFORMATION FOR CLASS-AB OPERATION
Th = 25 °C; R
RF performance in SSB operation in a common source circuit.
f
= 28.000 MHz; f2 = 28.001 MHz.
1
= 0.3 K/W; unless otherwise specified.
th mb-h
P
L
(W)
30 (PEP)2850150typ. 24typ. 40
f
(MHz)
V
(V)
DS
I
DQ
(mA)
G
p
(dB)
η
(%)
D
(2)
d
3
(1)
(dB)
typ. −35typ. −4022
d
(dB)
5
(1)
R
(Ω)
GS
Notes
1. Maximum values at drive levels within the specified PEP values for either amplified tone. For the peak envelope
power the values should be decreased by 6 dB.
2. 2-tone efficiency.
Ruggedness in class-AB operation
The BLF175 is capable of withstanding aload mismatch corresponding to VSWR = 50 through all phases at P
=30W
L
single tone under the following conditions:
VDS = 50 V; f = 28 MHz.
choke
R10.4 W metal film resistor22 Ω
R20.4 W metal film resistor1 MΩ
R30.4 W metal film resistor10 Ω
62 pF
51 pF
10 pF
int. dia. 6 mm;
leads 2 × 4mm
width 6 mm
1650 nHlength 20 mm;
int. dia. 12 mm;
leads 2 × 2mm
380 nHlength 13 mm;
int. dia. 7 mm;
leads 2 × 3mm
4312 020 36640
Notes
1. American Technical Ceramics (ATC) capacitor, type 100B or other capacitor of the same quality.
2. The striplines are on a double copper-clad printed circuit board, with PTFE fibre-glass dielectric (εr = 4.5),
thickness 1.6 mm.
2003 Jul 2213
Page 14
Philips SemiconductorsProduct specification
HF/VHF power MOS transistorBLF175
handbook, full pagewidth
strap
mounting screw
C2C4
150
strap
rivet
R3
C9
R2
C5
R1
L1
L2L3
C3C1
C6
L6
L4
L5
C7
C12
C8C11
strap
70
C10
MGP081
Dimensions in mm.
The circuit and components are situated on one side of the epoxy fibre-glass board, the other side being fully metallized to serve as earth.
Earth connections are made by means of hollow rivets and straps at the two edges and under the source contacts.
Fig.20 Component layout for 28 MHz class-AB test circuit.
2003 Jul 2214
Page 15
Philips SemiconductorsProduct specification
HF/VHF power MOS transistorBLF175
30
MGP083
f (MHz)
30
handbook, halfpage
Z
i
(Ω)
20
10
0
−10
−20
0102040
Class-ABoperation; VDS=50V;IDQ= 0.15 A;
= 30 W (PEP); RGS=22Ω.
P
L
r
i
x
i
Fig.21 Input impedance as afunction of frequency
(series components); typical values.
50
handbook, halfpage
Z
L
(Ω)
40
30
20
10
0
0102030
Class-ABoperation; VDS=50V;IDQ= 0.15 A;
= 30 W (PEP); RGS=22Ω.
P
L
R
L
X
L
MGP084
f (MHz)
Fig.22 Load impedance as afunction of frequency
(series components); typical values.
30
handbook, halfpage
G
p
(dB)
20
10
0
0 102030
Class-ABoperation; VDS=50V;IDQ= 0.15 A;
= 30 W (PEP); RGS=22Ω.
P
L
f (MHz)
Fig.23 Power gain as a function of frequency;
typical values.
MGP085
2003 Jul 2215
Page 16
Philips SemiconductorsProduct specification
HF/VHF power MOS transistorBLF175
APPLICATION INFORMATION FOR CLASS-B OPERATION
RF performance in SSB operation in a common source circuit.
1. For more extensive s-parameters see internet website:
http://www.semiconductors.philips.com.markets/communications/wirelesscommunicationms/broadcast
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
5.82
5.56
c
Db
9.73
0.18
9.47
0.10
0.385
0.383
0.007
0.004
IEC JEDEC EIAJ
0.373
0.371
D
9.78
9.42
F
1
20.71
2.72
19.93
2.31
0.815
0.107
0.091
0.131
0.785
0.120
REFERENCES
pH
3.33
3.04
Q
4.63
4.11
0.182
0.162
q
18.42
0.725
UNIT
mm
inches
A
7.47
6.37
0.294
0.251
OUTLINE
VERSION
SOT123A
0.229
0.219
MM
1
24.87
24.64
0.980
0.970
M
A
B
U2U
1
6.48
6.22
0.255
0.385
0.245
0.370
U
3
w
1
3
9.78
9.39
EUROPEAN
PROJECTION
Q
w
αU
2
0.510.25
45°
0.0200.010
ISSUE DATE
99-03-29
2003 Jul 2219
Page 20
Philips SemiconductorsProduct specification
HF/VHF power MOS transistorBLF175
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 datasheets describingmultiple type numbers,the highest-level productstatus determinesthe data sheetstatus.
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 valuesdefinition Limiting values givenare 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
atthese orat anyotherconditions abovethose givenin the
Characteristics sectionsof the specification isnot 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
norepresentation orwarrantythat suchapplicationswill 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 beexpected toresult inpersonal injury.Philips
Semiconductorscustomers usingorselling theseproducts
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 theproduct isin full production
(status ‘Production’), relevant changes will be
communicated via a Customer Product/Process Change
Notification (CPCN). Philips Semiconductorsassumes 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 Jul 2220
Page 21
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: [email protected].
The information presented in this document doesnot form part of any quotation orcontract, is believed to be accurate andreliable 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 Netherlands613524/03/pp21 Date of release: 2003 Jul 22Document order number: 9397 750 11582
SCA75
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