PHILIPS BLF346

DISCRETE SEMICONDUCTORS
DATA SHEET
BLF346
VHF power MOS transistor
Product specification
Supersedes data of September 1992
1996 Oct 02
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
FEATURES
PINNING-SOT119
• High power gain
PIN
SYMBOL
• Easy power control
DESCRIPTION
1
s
source
• Good thermal stability
2
s
source
• Gold metallization ensures excellent reliability.
3
g
gate
4
d
drain
APPLICATIONS
5
s
source
• Linear amplifier applications in Television transmitters
and transposers.
6
s
source
DESCRIPTION
Silicon N-channel enhancement mode vertical D-MOS
transistor encapsulated in a 6-lead, SOT119 flange
package, with a ceramic cap. All leads are isolated from
the flange. A marking code, showing gate-source voltage
(VGS) information is provided for matched pair
applications. Refer to the General Section of Data
Handbook SC19a for further information.
handbook, halfpage
CAUTION
1
2
3
4
5
6
d
g
The device is supplied in an antistatic package. The
gate-source input must be protected against static
discharge during transport or handling.
s
MAM268
Fig.1 Simplified outline and symbol.
QUICK REFERENCE DATA
RF performance in a linear amplifier.
MODE OF
OPERATION
f
(MHz)
VDS
(V)
ID
(A)
Class-A
224.25
28
3
Th
(°C)
PL
(W)
GP
(dB)
dim
(dB) (1)
70
>24
>14
−52
25
typ. 30
typ. 16.5
−52
Note
1. Three-tone test method (vision carrier −8 dB, sound carrier −7 dB, sideband signal −16 dB), zero dB corresponds to
peak synchronization level.
WARNING
Product and environmental safety - toxic materials
This product contains beryllium oxide. The product is entirely safe provided that the BeO disc is 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.
1996 Oct 02
2
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VDSS
drain-source voltage
−
65
V
VGSS
gate-source voltage
−
±20
V
ID
DC drain current
−
13
A
Ptot
total power dissipation
−
130
W
Tstg
storage temperature
up to Tmb = 25 °C
−65
150
°C
Tj
junction temperature
−
200
°C
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
VALUE
UNIT
Rth j-mb
thermal resistance from junction to
mounting base
Tmb = 25 °C; Ptot = 130 W
1.35
K/W
Rth mb-h
thermal resistance from mounting
base to heatsink
Tmb = 25 °C; Ptot = 130 W
0.2
K/W
MRA931
50
MGG104
200
handbook, halfpage
handbook, halfpage
Ptot
ID
(A)
(W)
150
10
(1)
(2)
(2)
100
(1)
1
50
10−1
1
10
VDS (V)
0
102
0
(1) Current is this area may be limited by RDSon.
(2) Tmb = 25 °C.
100
Th (°C)
(1) Continuous operation.
(2) Short-time operation during mismatch.
Fig.2 DC SOAR.
1996 Oct 02
50
Fig.3 Power derating curves.
3
150
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
CHARACTERISTICS
Tj = 25 °C unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V(BR)DSS
drain-source breakdown voltage VGS = 0; ID = 50 mA
65
−
−
V
IDSS
drain-source leakage current
VGS = 0; VDS = 28 V
−
−
2.5
mA
IGSS
gate-source leakage current
VGS = ±20 V; VDS = 0
−
−
1
µA
VGSth
gate-source threshold voltage
VDS = 10 V; ID = 50 mA
2
−
4.5
V
∆VGS
gate-source voltage difference
of matched pairs
VDS = 10 V; ID = 50 mA
−
−
100
mV
gfs
forward transconductance
VDS = 10 V; ID = 5 A
3
4.2
−
S
RDSon
drain-source on-state resistance VGS = 10 V; ID = 5 A
−
0.2
0.3
Ω
IDSX
on-state drain current
VGS = 10 V; VDS = 10 V
−
22
−
A
Cis
input capacitance
VGS = 0; VDS = 28 V; f = 1 MHz
−
225
−
pF
Cos
output capacitance
VGS = 0; VDS = 28 V; f = 1 MHz
−
180
−
pF
Crs
feedback capacitance
VGS = 0; VDS = 28 V; f = 1 MHz
−
25
−
pF
MGG105
2
handbook, halfpage
ID
(A)
T.C.
(mV/K)
0
30
−2
20
−4
10
−6
10−2
10−1
1
ID (A)
0
10
0
10
15
20
VDS = 10 V; Tj = 25 °C.
Temperature coefficient of gate-source voltage
as a function of drain current; typical values.
1996 Oct 02
5
VGS (V)
VDS = 10 V.
Fig.4
MGG106
40
handbook, halfpage
Fig.5
4
Drain current as a function of gate-source
voltage; typical values.
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
MGG107
340
MRA930
800
handbook, halfpage
C
(pF)
RDS on
(mΩ)
600
C os
280
400
C is
220
200
0
160
0
30
60
90
0
120
150
Tj (°C)
ID = 5 A; VGS = 10 V.
Fig.6
Fig.7
MGG108
300
handbook, halfpage
Crs
(pF)
200
100
0
10
20
30
40
VDS (V)
VGS = 0; f = 1 MHz.
Fig.8
Feedback capacitance as a function of
drain-source voltage; typical values.
1996 Oct 02
20
30
40
VDS (V)
VGS = 0; f = 1 MHz.
Drain-source on-state resistance as a function
of junction temperature; typical values.
0
10
5
Input and output capacitance as functions
of drain-source voltage; typical values.
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
APPLICATION INFORMATION
RF performance in a linear amplifier (common source class-A circuit).
Rth mb-h = 0.2 K/W; ZL = 1.1 + j0.2 Ω unless otherwise specified.
MODE OF
OPERATION
f
(MHz)
Class-A
ID
(A)
VDS
(V)
224.25
28
3
Th
(°C)
Po sync
(W)
GP
(dB)
dim
(dB) (1)
70
> 24
> 14
−52
25
typ. 30
typ. 16.5
−52
70
typ. 20
typ. 14.5
−55
25
typ. 22
typ. 15
−55
Note
1. Three-tone test method (vision carrier −8 dB, sound carrier −7 dB, sideband signal −16 dB), zero dB corresponds to
peak synchronization level.
Ruggedness in class-A operation
The BLF346 is capable of withstanding a load mismatch corresponding to VSWR = 50 : 1 through all phases under the
following conditions: VDS = 28 V; f = 225 MHz at rated output power.
MGG109
−50
handbook, halfpage
dim
(dB)
−55
(1)
(2)
−60
−65
−70
0
10
20
30
Po sync (W)
40
(1) Th = 70 °C.
(2) Th = 25 °C.
Fig.9
Intermodulation distortion as a function of
peak synchronized output power.
1996 Oct 02
6
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
handbook, full pagewidth
C10
C2
50 Ω
input
C1
C4
L4
DUT
C14
L7
L2
C3
C15
C5
L5
C8
R1
R5
C6
C9
C12
R2
C7
L6
C13
R4
VB
R3
VDS
MGG113
Fig.10 Test circuit for class-A operation at f = 225 MHz.
1996 Oct 02
50 Ω
output
BLF346
C11
L1
C16
L3
7
L8
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
List of components (see Figs 10 and 11).
COMPONENT
DESCRIPTION
VALUE
DIMENSIONS
CATALOGUE NO.
C1
film dielectric trimmer
2 to 18 pF
C2
multilayer ceramic chip capacitor
(note 1)
10 pF, 500 V
2222 809 09003
C3, C15, C16
film dielectric trimmer
4 to 40 pF
C4, C5
multilayer ceramic chip capacitor
(note 1)
56 pF, 500 V
C6, C12
multilayer ceramic chip capacitor
(note 1)
680 pF, 500 V
C7, C8, C9
multilayer ceramic chip capacitor
100 nF, 50 V
C10, C11
multilayer ceramic chip capacitor
(note 1)
43 pF, 500 V
C13
electrolytic capacitor
10 µF, 63 V
C14
multilayer ceramic chip capacitor
(note 1)
27 pF, 500 V
L1
4 turns enamelled 0.7 mm copper
wire
42.4 nH
length 4 mm;
int. dia. 3 mm;
leads 2 × 5 mm
L2
stripline (note 2)
50 Ω
length 49 mm;
width 2.8 mm
L3, L4
stripline (note 2)
31 Ω
length 11.5 mm;
width 6 mm
L5
2 turns enamelled 1.5 mm copper
wire
18.7 nH
length 8 mm;
int. dia. 4 mm;
leads 2 × 5 mm
L6
grade 3B Ferroxcube RF choke
L7
stripline (note 2)
31 Ω
length 40 mm;
width 6 mm
L8
3 turns enamelled 1.5 mm copper
wire
28.8 nH
length 8 mm;
int. dia. 4 mm;
leads 2 × 5 mm
R1
metal film resistor
1 kΩ, 0.4 W
2322 151 71002
R2
metal film resistor
100 kΩ, 0.4 W
2322 151 71004
R3
10 turns cermet potentiometer
100 Ω
R4
metal film resistor
316 kΩ, 0.4 W
2322 153 53161
R5
metal film resistor
10 Ω, 0.4 W
2322 153 51009
2222 809 08002
2222 852 47104
2222 030 38109
4312 020 36642
Notes
1. American Technical Ceramics capacitor, type 100B or other capacitor of the same quality.
2. The striplines are on a double copper-clad printed circuit board with epoxy fibre-glass dielectric (εr = 4.5); thickness
1⁄ inch.
16
1996 Oct 02
8
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
150
handbook, full pagewidth
strap
strap
rivet
rivet
rivet
rivet
rivet
rivet
rivet
70
rivet
strap
strap
mounting
screws
(8×)
+VDS
R3
L6
C7
C1
L1
C12
R5
R2
C6
R1
L5
L2
C16
C8 C9
C10
C4
C2
C13
L7
L4
L3
C5
C14
L8
C11
C15
C3
MGG114
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.11 Component layout for 225 MHz class-A test circuit.
1996 Oct 02
9
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
MGG110
MGG111
4
2
handbook, halfpage
handbook, halfpage
Zi
(Ω)
ri
2
ZL
(Ω)
RL
0
1
−2
XL
xi
−4
−6
160
180
200
220
0
160
240
180
200
220
240
f (MHz)
f (MHz)
Class-A operation; VDS = 28 V; ID = 3 A; PL = 30 W; Th = 70 °C.
Class-A operation; VDS = 28 V; ID = 3 A; PL = 30 W; Th = 70 °C.
Fig.12 Input impedance as a function of frequency
(series components); typical values.
Fig.13 Load impedance as a function of frequency
(series components); typical values.
MGG112
20
handbook, halfpage
Gp
(dB)
16
handbook, halfpage
12
8
Zi
ZL
MBA379
4
0
160
180
200
220
240
f (MHz)
Class-A operation; VDS = 28 V; ID = 3 A; PL = 30 W; Th = 70 °C.
Fig.15 Power gain as a function of frequency;
typical values.
Fig.14 Definition of MOS impedance.
1996 Oct 02
10
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
PACKAGE OUTLINE
22 max
handbook, full pagewidth
6.35
0.14
4
min
ceramic
1
2
3
4
5
6
5.7
5.3
6.48
12.96
5.5
5.0
25.2
max 18.42
3.8
min
13
max
5.7
5.3
BeO
metal
3.35 (2x)
3.04
MBC877
12.2
2.5
4.50
4.05
7.5
max
Dimensions in mm.
Fig.16 SOT119.
1996 Oct 02
11
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
DEFINITIONS
Data Sheet Status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). 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.
Application information
Where application information is given, it is advisory and does not form part of the specification.
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 customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1996 Oct 02
12
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
NOTES
1996 Oct 02
13
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
NOTES
1996 Oct 02
14
Philips Semiconductors
Product specification
VHF power MOS transistor
BLF346
NOTES
1996 Oct 02
15
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© Philips Electronics N.V. 1996
SCA51
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Printed in The Netherlands
127041/1200/04/pp16
Date of release: 1996 Oct 02
Document order number:
9397 750 01114