BLF248
VHF push-pull power MOS transistor
Rev. 4 — 1 September 2015
Product data sheet
IMPORTANT NOTICE
Dear customer,
As of December 7th, 2015 BL RF Power of NXP Semiconductors will operate as
an independent company under the new trade name Ampleon, which will be used
in future data sheets together with new contact details.
In data sheets, where the previous Philips references is mentioned, please use
the new links as shown below.
http://www.philips.semiconductors.com use http://www.ampleon.com
http://www.semiconductors.philips.com use http://www.ampleon.com (Internet)
sales.addresses@www.semiconductors.philips.com use
http://www.ampleon.com/sales
The copyright notice at the bottom of each page (or elsewhere in the document,
depending on the version)
- © Koninklijke Philips Electronics N.V. (year). All rights reserved is replaced with:
- © Ampleon B.V. (year). All rights reserved. If you have any questions related to the data sheet, please contact our nearest
sales office (details via http://www.ampleon.com/sales).
Thank you for your cooperation and understanding,
Ampleon
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
FEATURES
BLF248
PIN CONFIGURATION
• High power gain
• Easy power control
• Good thermal stability
• Gold metallization ensures
excellent reliability.
1
2
d2
halfpage
g2
s
g1
5
DESCRIPTION
3
Dual push-pull silicon N-channel
enhancement mode vertical D-MOS
transistor, designed for large signal
amplifier applications in the VHF
frequency range.
The transistor is encapsulated in a
4-lead SOT262 A1 balanced flange
package, with two ceramic caps. The
mounting flange provides the
common source connection for the
transistors.
4
Top view
DESCRIPTION
1
drain 1
2
drain 2
3
gate 1
4
gate 2
5
source
MBB157
MSB008
Fig.1 Simplified outline and symbol.
CAUTION
This product is supplied in anti-static packing to prevent damage caused by
electrostatic discharge during transport and handling. For further information,
refer to Philips specs.: SNW-EQ-608, SNW-FQ-302A, and SNW-FQ-302B.
WARNING
PINNING - SOT262 A1
PIN
d1
5
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
class-AB
2003 Sep 02
f
(MHz)
VDS
(V)
PL
(W)
Gp
(dB)
ηD
(%)
225
28
300
>10
>55
175
28
300
typ. 13
typ. 67
2
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 60134).
Per transistor section unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VDS
drain-source voltage
−
65
V
VGS
gate-source voltage
−
±20
V
ID
drain current (DC)
Ptot
total power dissipation
Tstg
storage temperature
Tmb ≤ 25 °C total device;
both sections equally loaded
−
25
A
−
500
W
−65
150
°C
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
Rth j-mb
thermal resistance from junction to
mounting base
total device; both sections
equally loaded.
0.35
K/W
Rth mb-h
thermal resistance from mounting base to
heatsink
total device; both sections
equally loaded.
0.15
K/W
MGP203
MRA933
102
handbook, halfpage
600
handbook, halfpage
Ptot
ID
(A)
(2)
(W)
(1)
(2)
400
(1)
10
200
1
1
10
VDS (V)
0
102
0
(1) Current is this area may be limited by RDSon.
(2) Tmb = 25 °C.
Total device; both sections equally loaded.
100
Th (°C)
(1) Continuous operation.
(2) Short-time operation during mismatch.
Total device; both sections equally loaded.
Fig.2 DC SOAR.
2003 Sep 02
50
Fig.3 Power derating curves.
3
150
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
CHARACTERISTICS
Tj = 25 °C unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP. MAX. UNIT
65
−
Per section
V(BR)DSS
drain-source breakdown voltage
VGS = 0; ID = 100 mA
−
V
IDSS
drain-source leakage current
VGS = 0; VDS = 28 V
−
−
5
mA
IGSS
gate-source leakage current
VGS = ±20 V; VDS = 0
−
−
1
µA
VGSth
gate-source threshold voltage
ID = 100 mA; VDS = 10 V
2
−
4.5
V
∆VGS
gate-source voltage difference of
both transistor sections
ID = 100 mA; VDS = 10 V
−
−
100
mV
gfs
forward transconductance
ID = 8 A; VDS = 10 V
5
7.5
−
S
gfs1/gfs2
forward transconductance ratio of
both transistor sections
ID = 8 A; VDS = 10 V
0.9
−
1.1
RDSon
drain-source on-state resistance
ID = 8 A; VGS = 10 V
−
0.1
0.15
Ω
IDSX
on-state drain current
VGS = 10 V; VDS = 10 V
−
37
−
A
Cis
input capacitance
VGS = 0; VDS = 28 V; f = 1 MHz
−
500
−
pF
Cos
output capacitance
VGS = 0; VDS = 28 V; f = 1 MHz
−
360
−
pF
Crs
feedback capacitance
VGS = 0; VDS = 28 V; f = 1 MHz
−
46
−
pF
VGS group indicator
LIMITS
(V)
GROUP
LIMITS
(V)
GROUP
MIN.
MAX.
MIN.
MAX.
A
2.0
2.1
B
2.1
2.2
O
3.3
3.4
P
3.4
3.5
C
2.2
2.3
Q
3.5
3.6
D
2.3
2.4
R
3.6
3.7
E
2.4
2.5
S
3.7
3.8
F
2.5
2.6
T
3.8
3.9
G
2.6
2.7
U
3.9
4.0
H
2.7
2.8
V
4.0
4.1
J
2.8
2.9
W
4.1
4.2
K
2.9
3.0
X
4.2
4.3
L
3.0
3.1
Y
4.3
4.4
M
3.1
3.2
Z
4.4
4.5
N
3.2
3.3
2003 Sep 02
4
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
MGP204
0
MGP205
60
handbook, halfpage
handbook, halfpage
T.C.
(mV/K)
ID
(A)
−1
40
−2
−3
20
−4
−5
10−1
1
0
10
ID (A)
0
5
10
15
VGS (V)
20
VDS = 10 V.
VDS = 10 V; Tj = 25 °C.
Fig.4
Temperature coefficient of gate-source
voltage as a function of drain current; typical
values per section.
Fig.5
Drain current as a function of gate-source
voltage; typical values per section.
MGP206
MGP207
200
1500
handbook, halfpage
handbook, halfpage
C
(pF)
RDSon
(mΩ)
1000
100
Cis
500
Cos
0
0
50
100
Tj (°C)
0
150
0
10
ID = 8 A; VGS = 10 V.
VGS = 0; f = 1 MHz.
Fig.6
Fig.7
Drain-source on-state resistance as a
function of junction temperature; typical
values per section.
2003 Sep 02
5
20
30
VDS (V)
40
Input and output capacitance as functions
of drain-source voltage; typical values per
section.
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
MGP208
600
handbook, halfpage
Crs
(pF)
400
200
0
0
10
20
30
VDS (V)
40
VGS = 0; f = 1 MHz.
Fig.8
Feedback capacitance as a function of
drain-source voltage; typical values per
section.
APPLICATION INFORMATION FOR CLASS-AB OPERATION
Th = 25 °C; Rth mb-h = 0.15 K/W, unless otherwise specified.
RF performance in a linear amplifier in a common source class-AB circuit.
RGS = 536 Ω per section; optimum load impedance per section = 0.79 − j0.11 Ω.
MODE OF OPERATION
class-AB
f
(MHz)
VDS
(V)
PL
(W)
Gp
(dB)
ηD
(%)
225
28
300
>10
typ. 11.5
>55
typ. 65
175
28
300
typ. 13
typ. 67
Ruggedness in class-AB operation
The BLF248 is capable of withstanding a load mismatch corresponding to VSWR = 50 through all phases under the
following conditions:
VDS = 28 V; f = 225 MHz at rated output power.
2003 Sep 02
6
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
MGP209
20
Gp
(dB)
ηD
Th = 25 °C
70 °C
15
25 °C
70 °C
Gp
10
5
0
0
MGP210
80
handbook, halfpage
100
200
300
PL (W)
400
handbook, halfpage
ηD
(%)
PL
(W)
60
Th = 25 °C
300
70 °C
40
200
20
100
0
400
0
0
10
20
30
PIN (W)
40
Class-AB operation; VDS = 28 V; IDQ = 2 × 250 mA;
RGS = 536 Ω (per section); ZL = 0.79 − j0.11 Ω (per
section); f = 225 MHz.
Class-AB operation; VDS = 28 V; IDQ = 2 × 250 mA;
RGS = 536 Ω (per section); ZL = 0.79 − j0.11 Ω (per
section); f = 225 MHz.
Fig.9
Fig.10 Load power as a function of input power;
typical values.
Power gain and efficiency as functions of
load power; typical values.
2003 Sep 02
7
This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in
_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in
white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
C12
C17
C8
R7
R2
L12
C18
C9
C13
C6
L13
R3
C25
D.U.T.
L1
8
50 Ω
input
C1
L4
L2
C4
L18
L20
C29
L22
L8
L6
C3
L10 L16
C5
C22
C23
C24
C27
L23
C28
50 Ω
output
Philips Semiconductors
A
C16
VHF push-pull power MOS transistor
handbook, full pagewidth
2003 Sep 02
R1
VDD1
C2
L3
L7
L5
C30
L9
L11
L21
L24
L14
C7
C10
L19
L17
C26
R4
C14
C19
R5
R8
A
L15
C11
C20
IC1
C15
R9
R6
f = 225 MHz.
C32
C21
C31
VDD2
MGP211
Fig.11 Test circuit for class-AB operation.
BLF248
C34
Product specification
VDD1
C33
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
List of components class-AB test circuit; (see Figs 11 and 12)
COMPONENT
DESCRIPTION
VALUE
C1, C2
multilayer ceramic chip capacitor;
note 1
2 × 56 pF
+ 18 pF in parallel,
500 V
C3
film dielectric trimmer
2 to 9 pF
C4
multilayer ceramic chip capacitor;
note 1
47 pF, 500 V
C5
film dielectric trimmer
5 to 60 pF
C6, C7, C9,
C10, C12, C15,
C31, C34
multilayer ceramic chip capacitor;
note 1
1 nF, 500 V
C8, C11, C16,
C21, C32
multilayer ceramic chip capacitor
100 nF, 50 V
C13, C14, C18,
C19
multilayer ceramic chip capacitor;
note 1
510 pF, 500 V
DIMENSIONS
2222 809 09005
2222 809 08003
2222 852 47104
C17, C20, C33
electrolytic capacitor
10 µF, 63 V
C22
multilayer ceramic chip capacitor;
note 1
82 pF, 500 V
C23
multilayer ceramic chip capacitor;
note 1
10 pF + 30 pF
in parallel, 500 V
C24, C28
film dielectric trimmer
2 to 18 pF
C25, C26
multilayer ceramic chip capacitor;
note 1
39 pF + 47 pF
in parallel, 500 V
C27
multilayer ceramic chip capacitor;
note 1
18 pF, 500 V
C29, C30
multilayer ceramic chip capacitor;
note 1
3 × 100 pF
in parallel, 500 V
L1, L3, L22, L24
stripline; note 2
50 Ω
4.8 × 80 mm
L2, L23
semi-rigid cable; note 3
50 Ω
ext. dia. 3.6 mm
ext. conductor
length 80 mm
L4, L5
stripline; note 2
43 Ω
6 × 32.5 mm
L6, L7, L10, L11
stripline; note 2
43 Ω
6 × 10.5 mm
L8, L9
stripline; note 2
43 Ω
6 × 3 mm
L12, L15
grade 3B Ferroxcube wide-band
HF choke
2 in parallel
L13, L14
2 turns enamelled 1.6 mm copper
wire
25 nH
int. dia. 5 mm
leads 2 × 7 mm
space 2.5 mm
L16, L17
stripline; notes 2 and 4
43 Ω
6 × 3 mm
2222 809 09006
4312 020 36642
L18, L19
stripline; notes 2 and 4
43 Ω
6 x 35 mm
L20, L21
stripline; notes 2 and 4
43 Ω
6 × 9 mm
R1, R6
10 turns potentiometer
50 kΩ
R2, R5
0.4 W metal film resistor
1 kΩ
2003 Sep 02
9
CATALOGUE NO.
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
COMPONENT
BLF248
DESCRIPTION
VALUE
R3, R4
0.4 W metal film resistor
536 Ω
R7, R8
1 W metal film resistor
10 Ω ±5%
R9
1 W metal film resistor
3.16 kΩ
IC1
78L05 voltage regulator
DIMENSIONS
CATALOGUE NO.
Notes
1. American Technical Ceramics (ATC) capacitor, type 100B or other capacitor of the same quality.
2. L1, L3 to L11, L16 to L22 and L24 are micro-striplines on a double copper-clad printed-circuit board, with glass
microfibre PTFE dielectric (εr = 2.2), thickness 1⁄16 inch, thickness of copper sheet 2 × 35 µm.
3. L2 and L23 are soldered on striplines L1 and L24 respectively.
4. A copper strap, thickness 0.8 mm, is soldered on striplines L16 to L21.
2003 Sep 02
10
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
handbook, full pagewidth
BLF248
130
119
100
IC1
R9
+VDD1
to R1, R6
C31
C32
C16
L12
C17
R7
C34
L1
C12
C13
C18
C33
L2
L12
slider R1
L22
C9
L13
R2
C8
+VDD1
C6
hollow rivet
R3
C1
L4
L6
C4
L7
hollow rivets
C3
L5
L8
C5
C2
R4
R5
C11
L9
L10
C22
L11
C29
C25
L16
L20
L18
C27
C23
C24
L17
C26
L19
C10
hollow rivets
C28
L21
C30
+VDD2
L14
L3
slider R6
C7
L15
L23
L24
R8
C19
copper strap
C20
L15
C14
C15
C21
copper strap
MGP213
Dimensions in mm.
The circuit and components are situated on one side of the printed circuit board, the other side being fully
metallized, to serve as a ground plane. Earth connections are made by means of copper straps and hollow rivets.
Fig.12 Component layout for 225 MHz class-AB test circuit.
2003 Sep 02
11
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
MGP218
MGP217
3
5
handbook, halfpage
handbook, halfpage
Zi
(Ω)
ZL
(Ω)
ri
0
2
xi
RL
−5
1
XL
−10
0
−15
−20
−1
0
50
100
150
0
200
250
f (MHz)
50
100
150
200
250
f (MHz)
Class-AB operation; VDS = 28 V; ID = 2 × 250 mA;
RGS = 536 Ω (per section);
PL = 300 W (total device); Th = 25 °C.
Class-AB operation; VDS = 28 V; ID = 2 × 250 mA;
RGS = 536 Ω (per section);
PL = 300 W (total device); Th = 25 °C.
Fig.13 Input impedance as a function of frequency
(series components); typical values per
section.
Fig.14 Load impedance as a function of frequency
(series components); typical values per
section.
MGP216
40
handbook, halfpage
Gp
(dB)
30
20
10
0
0
50
100
150
200
250
f (MHz)
Class-AB operation; VDS = 28 V; ID = 2 × 250 mA;
RGS = 536 Ω (per section);
PL = 300 W (total device); Th = 25 °C.
Fig.15 Power gain as a function of frequency;
typical values per section.
2003 Sep 02
12
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
BLF248 scattering parameters
VDS = 28 V; ID = 250 mA; note 1
s11
f (MHz)
s21
s12
s22
|s11|
∠Φ
|s21|
∠Φ
|s12|
∠Φ
|s22|
∠Φ
5
0.85
−158.7
22.19
97.0
0.01
−1.4
0.90
168.9
10
0.85
−168.6
11.27
88.5
0.01
20.7
0.85
174.2
20
0.85
−173.2
5.51
79.0
0.01
18.2
0.83
178.2
30
0.86
−174.1
3.57
72.0
0.02
8.2
0.83
−179.8
40
0.87
−174.3
2.56
65.9
0.02
−0.2
0.83
−178.0
50
0.88
−174.4
1.96
60.6
0.02
−7.2
0.85
−176.6
60
0.89
−174.6
1.55
55.7
0.01
−13.1
0.86
−175.8
70
0.90
−174.8
1.26
51.3
0.01
−17.8
0.87
−175.3
80
0.91
−175.1
1.05
47.5
0.01
−21.6
0.89
−175.0
90
0.92
−175.5
0.88
44.0
0.01
−24.6
0.90
−174.9
100
0.93
−175.8
0.76
40.6
0.01
−27.0
0.91
−175.0
125
0.95
−176.7
0.53
33.6
0.01
−30.2
0.93
−175.6
150
0.96
−177.6
0.38
28.9
0.01
−28.2
0.94
−175.6
175
0.97
−178.4
0.30
25.5
0.00
−21.2
0.96
−176.0
200
0.97
−179.2
0.23
22.3
0.00
−5.3
0.97
−176.7
250
0.98
179.4
0.16
18.6
0.00
47.5
0.98
−177.6
300
0.98
178.2
0.11
17.2
0.01
71.9
0.98
−178.5
350
0.98
177.1
0.08
16.7
0.01
78.0
0.99
−179.1
400
0.99
176.2
0.07
18.9
0.01
84.9
0.99
−179.9
450
0.99
175.2
0.05
21.7
0.01
88.1
0.99
179.6
500
0.99
174.2
0.05
26.7
0.01
88.6
0.99
179.0
600
0.99
172.3
0.04
38.3
0.02
89.4
1.00
177.9
700
0.99
170.4
0.03
50.8
0.02
90.0
1.00
176.9
800
0.99
168.6
0.03
63.7
0.03
91.0
1.00
176.0
900
0.99
166.6
0.04
71.0
0.03
91.6
1.00
175.0
1000
0.99
164.7
0.04
77.6
0.04
92.3
1.00
174.1
Note
1. For more extensive s-parameters see internet:
http://www.semiconductors.philips.com/markets/communications/wirelesscommunication/broadcast
2003 Sep 02
13
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
PACKAGE OUTLINE
Flanged double-ended ceramic package; 2 mounting holes; 4 leads
SOT262A1
D
A
F
D1
U1
B
q
C
w2 M C M
H1
1
H
c
2
p
U2
E1
E
5
A
3
w1 M A M B M
4
w3 M
b
Q
e
0
5
10 mm
scale
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
UNIT
A
b
c
mm
5.77
5.00
5.85
5.58
0.16
0.10
inches
D
D1
e
E
E1
22.17 21.98
10.27 10.29
11.05
21.46 21.71
10.05 10.03
F
H
1.78
1.52
H1
21.08 17.02
19.56 16.51
p
Q
q
U1
U2
w1
w2
w3
3.28
3.02
2.85
2.59
27.94
34.17
33.90
9.91
9.65
0.25
0.51
0.25
0.227 0.230 0.006 0.873 0.865
0.404 0.405 0.070 0.830 0.670 0.129 0.112
1.345 0.390
1.100
0.010 0.020 0.010
0.435
0.197 0.220 0.004 0.845 0.855
0.396 0.396 0.060 0.770 0.650 0.119 0.102
1.335 0.380
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
ISSUE DATE
99-03-29
SOT262A1
2003 Sep 02
EUROPEAN
PROJECTION
14
Philips Semiconductors
Product specification
VHF push-pull power MOS transistor
BLF248
DATA SHEET STATUS
LEVEL
DATA SHEET
STATUS(1)
PRODUCT
STATUS(2)(3)
Development
DEFINITION
I
Objective data
II
Preliminary data Qualification
This 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.
III
Product data
This 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).
Production
This 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.
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.
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
Semiconductors customers using 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.
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
at these or at any 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.
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.
Application information Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.
2003 Sep 02
15
Philips Semiconductors – a worldwide company
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.
SCA75
© Koninklijke Philips Electronics N.V. 2003
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
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 Netherlands
613524/03/pp16
Date of release: 2003
Sep 02
Document order number:
9397 750 11586