PHILIPS BFQ270

DISCRETE SEMICONDUCTORS
DATA SHEET
BFQ270
NPN 6 GHz wideband transistor
Product specification
File under Discrete Semiconductors, SC14
September 1995
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
FEATURES
BFQ270
PINNING
• High power gain
PIN
DESCRIPTION
• Emitter-ballasting resistors for
good thermal stability
1
collector
• Gold metallization ensures
excellent reliability.
2
emitter
3
base
4
emitter
page
4
3
1
DESCRIPTION
Silicon NPN transistor mounted in a
4-lead dual-emitter SOT172A1.
envelope with a ceramic cap. All
leads are isolated from the mounting
base.
2
Top view
It is primarily intended for use in
MATV and CATV amplifiers.
MBC869
Fig.1 SOT172A1.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
VCBO
collector-base voltage
open emitter
−
−
25
V
VCEO
collector-emitter voltage
open base
−
−
19
V
IC
DC collector current
−
−
500
mA
Ptot
total power dissipation
up to Tc = 100 °C
−
−
10
W
hFE
DC current gain
IC = 240 mA; VCE = 18 V; Tj = 25 °C
60
−
−
fT
transition frequency
IC = 240 mA; VCE = 18 V; f = 1 GHz;
Tamb = 25 °C
−
6
−
GHz
GUM
maximum unilateral power gain
IC = 240 mA; VCE = 18 V;
f = 800 MHz; Tamb = 25 °C
−
10
−
dB
VO
output voltage
dim = −60 dB; IC = 240 mA;
VCE = 18 V; RL = 75 Ω;
f(p+q-r) = 793.25 MHz
−
1.6
−
V
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.
September 1995
2
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
LIMITING VALUES
In accordance with the Absolute Maximum System (IEC 134).
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VCBO
collector-base voltage
open emitter
−
25
V
VCEO
collector-emitter voltage
open base
−
19
V
VEBO
emitter-base voltage
open collector
−
2
V
IC
DC collector current
−
500
mA
Ptot
total power dissipation
up to Tc = 100 °C
−
10
W
Tstg
storage temperature
−65
150
°C
Tj
junction temperature
−
200
°C
THERMAL RESISTANCE
SYMBOL
Rth j-c
PARAMETER
THERMAL RESISTANCE
thermal resistance from junction to case
10 K/W
CHARACTERISTICS
Tj = 25 °C unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX.
UNIT
ICBO
collector cut-off current
IE = 0; VCB = 18 V
−
−
100
µA
hFE
DC current gain
IC = 240 mA; VCE = 18 V
60
110
−
Cc
collector capacitance
IE = ie = 0; VCB = 18 V; f = 1 MHz
−
3.6
−
pF
Ce
emitter capacitance
IC = ic = 0; VEB = 0.5 V; f = 1 MHz
−
11
−
pF
Cre
feedback capacitance
IC = 0; VCB = 18 V; f = 1 MHz
2
2.6
−
pF
Ccs
collector-stud capacitance
−
1.2
−
pF
fT
transition frequency
IC = 240 mA; VCE = 18 V; f = 1 GHz;
Tamb = 25 °C
4.5
6
−
GHz
GUM
maximum unilateral power gain
(note 1)
IC = 240 mA; VCE = 18 V;
f = 500 MHz; Tamb = 25 °C
−
16
−
dB
IC = 240 mA; VCE = 18 V; f = 1 GHz;
Tamb = 25 °C
−
10
−
dB
VO
output voltage
note 2
−
1.6
−
V
d2
second order intermodulation
distortion
note 3
−
−50
−
dB
Notes
2
S 21
- dB˙
1. GUM is the maximum unilateral power gain, assuming S12 is zero and G UM = 10 log ------------------------------------------------------------2 
2

1
1
–
S
–
S

11  
22 
2. dim = −60 dB (DIN 45004); IC = 240 mA; VCE = 18 V; RL = 75 Ω;
Vp = VO; fp = 795.25 MHz;
Vq = VO −6 dB; fq = 803.25 MHz;
Vr = VO −6 dB; fr = 805.25 MHz;
measured at f(p+q−r) = 793.25 MHz.
3. IC = 240 mA; VCE = 18 V; RL = 75 Ω;
Vp = Vq = VO = 50.5 dBmV = 335 mV;
f(p+q) = 810 MHz; fp = 250 MHz; fq = 560 MHz.
September 1995
3
Philips Semiconductors
Product specification
,
,,,,,
NPN 6 GHz wideband transistor
handbook, full pagewidth
V bias
BFQ270
VCC (1)
L1
C4
R5
C8
C7
L3
R6
L1
input
n–75 Ω
C2
C9
L2
L4
L5
C5
L2
L6
output
n–75 Ω
C6
DUT
C3
C1
R1
R2
R3
R4
MBB488
(1) +Vc is equivalent to VCE = Vc − Ic (A) × 17.
Fig.2 Intermodulation and second order intermodulation distortion test circuit.
List of components (see test circuit)
DESIGNATION
DESCRIPTION
VALUE
DIMENSIONS
CATALOGUE NO.
C1
miniature ceramic plate capacitor
0.82 pF
2222 680 03827
C2, C5, C7, C8
multilayer ceramic capacitor
10 nF
2222 852 47103
C3
multilayer ceramic chip capacitor
2.2 pF
2222 855 12228
C4 (note 1)
miniature ceramic plate capacitor
1 nF
2222 630 08102
C6
miniature ceramic plate capacitor
1.2 pF
2222 680 03128
C9
electrolytic capacitor
4.7 µF
2222 014 28478
L1 (note 1)
4.5 turns loosely wound 0.4 mm
enamelled copper wire
≈35 nH
L2
Ferroxcube choke
5 µH
ML1, ML6
microstripline
75 Ω
width 2.46 mm;
length 9 mm
ML2, ML5
microstripline
75 Ω
width 2.46 mm;
length 22 mm
ML3, ML4
microstripline
145 Ω
width 0.5 mm;
length 12 mm
R1, R2, R3, R4
metal film resistor
68 Ω
type MR25
2322 151 76819
R5 (note 1)
metal film resistor
240 Ω
type SFR16T
2322 180 73241
R6
metal film resistor
10 kΩ
type SFR16T
2322 180 73103
internal coil diameter
2 mm
3122 108 20153
Note
1. Components C4, L1, and R5 are mounted in a cavity in the brass ground plate.
The circuit is constructed on a printed circuit board and 10 mm thick brass ground plate, with a relative dielectric constant
of (εr = 2.2), thickness 1.57 mm; thickness of copper 0.017 mm (E.G. Rogers’ RT/Duroid 5880).
September 1995
4
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
VCC
Vbias
C9
C7
R5
R3
R6
C8
L1
R4
L2
C4
input
n–75 Ω
L3
L1
L4
L2
C2
C1
L6
L5
C3
C5
C6
output
n–75 Ω
R2
R1
MBB487
80 mm
handbook, full pagewidth
copper straps
70 mm
mounting screw
(4 x M2.5)
MBB486
Fig.3 Intermodulation test circuit printed circuit board.
September 1995
5
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
MRA747
14
MRA746
150
handbook, halfpage
handbook, halfpage
Ptot
hFE
(W)
12
100
8
50
4
0
0
0
50
100
0
150
200
Tcase (oC)
100
200
300
400
500
IC (mA)
VCE = 18 V; Tj = 25 °C.
Fig.4 Power derating curve.
Fig.5
MRA736
5
DC current gain as a function of collector
current.
MRA741
8
handbook, halfpage
handbook, halfpage
Cre
(pF)
fT
(GHz)
4
VCE = 18 V
6
3
12 V
4
2
2
1
0
0
4
0
8
12
0
16
20
VCB (V)
100
ic = 0; f = 1 MHz.
f = 1 GHz; Tamb = 25 °C.
Fig.6
Fig.7
Feedback capacitance as a function of
collector-base voltage.
September 1995
6
200
300
400
500
IC (mA)
Transition frequency as a function of
collector current.
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
MRA743
25
MRA745
25
handbook, halfpage
handbook, halfpage
gain
(dB)
gain
(dB)
20
20
Gmax
15
GUM
GUM
10
500 MHz
GUM
500 MHz
GUM
15
Gmax
MSG
10
1 GHz
Gmax
5
1 GHz
Gmax
5
0
0
0
200
400
IC (mA)
600
0
200
400
Fig.8 Gain as a function of collector current.
Fig.9 Gain as a function of collector current.
MRA744
MRA742
50
50
handbook, halfpage
handbook, halfpage
gain
(dB)
gain
(dB)
40
40
GUM
30
30
GUM
MSG
MSG
20
20
10
10
Gmax
Gmax
10−1
1
f (GHz)
0
10−2
10
Ic = 240 mA; VCE = 12 V.
10−1
1
f (GHz)
10
Ic = 240 mA; VCE = 18 V.
Fig.10 Gain as a function of frequency.
September 1995
600
VCE = 18 V.
VCE = 12 V.
0
10−2
IC (mA)
Fig.11 Gain as a function of frequency.
7
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
MRA739
−30
MRA740
−30
handbook, halfpage
handbook, halfpage
dim
(dB)
dim
(dB)
−40
−40
−50
−50
−60
−60
−70
−70
75
125
175
225
IC (mA)
275
75
125
175
225
IC (mA)
275
3-tone dim; (VCE = 18 V);
fp = 445.25 MHz; Vo = 65.11 dBmV (1.8 V);
fq = 453.25 MHz; Vo = 59.11 dBmV;
fr = 455.25 MHz; Vo = 59.11 dBmV;
f(p+q-r) = 443.25 MHz.
3-tone dim; (VCE = 18 V);
fp = 795.25 MHz; Vo = 64.08 dBmV (1.6 V);
fq = 803.25 MHz; Vo = 58.08 dBmV;
fr = 805.25 MHz; Vo = 58.08 dBmV;
f(p+q-r) = 793.25 MHz.
Fig.12 Intermodulation distortion as a function of
collector current.
Fig.13 Intermodulation distortion as a function of
collector current.
MRA738
−30
d2
handbook, halfpage
(dB)
(dB)
−40
−40
−50
−50
−60
−60
−70
−70
−80
75
125
175
225
MRA737
−30
d2
handbook, halfpage
−80
75
275
325
IC (mA)
125
175
225
275
325
IC (mA)
VCE = 18 V;
fp = 50 MHz; Vo = 50.5 dBmV (0.335 V);
fq = 400 MHz; Vo = 50.5 dBmV;
f(p+q) = 450 MHz.
VCE = 18 V;
fp = 250 MHz; Vo = 50.5 dBmV (0.335 V);
fq = 560 MHz; Vo = 50.5 dBmV;
f(p+q) = 810 MHz.
Fig.14 Second order intermodulation distortion as
a function of collector current.
Fig.15 Second order intermodulation distortion as
a function of collector current.
September 1995
8
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
1
handbook, full pagewidth
0.5
2
3 GHz
0.2
5
10
+j
0.2
0
0.5
1
2
5
10
∞
–j
10
5
0.2
40 MHz
2
0.5
MBB484
1
Ic = 240 mA; VCE = 18 V.
Zo = 50 Ω.
Fig.16 Common emitter input reflection coefficient (S11).
90°
handbook, full pagewidth
120°
60°
40 MHz
150°
30°
+ϕ
180°
50
40
30
20
10
0°
3 GHz
−ϕ
30°
150°
60°
120°
90°
MBB482
Ic = 240 mA; VCE = 18 V.
Fig.17 Common emitter forward transmission coefficient (S21).
September 1995
9
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
90°
handbook, full pagewidth
120°
60°
150°
30°
3 GHz
+ϕ
0.5
180°
0.4
0.3
0.2
0.1
0°
40 MHz
−ϕ
30°
150°
60°
120°
MBB483
90°
Ic = 240 mA; VCE = 18 V.
Fig.18 Common emitter reverse transmission coefficient (S12).
1
handbook, full pagewidth
0.5
2
3 GHz
0.2
5
10
+j
0
0.2
0.5
1
2
5
10
∞
–j
10
5
0.2
40 MHz
2
0.5
1
MBB485
Ic = 240 mA; VCE = 18 V.
Zo = 50 Ω.
Fig.19 Common emitter output reflection coefficient (S22).
September 1995
10
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
PACKAGE OUTLINE
Studded ceramic package; 4 leads
SOT172A1
D
A
Q
c
A
D1
N2
N
M
W
w1 M A
D2
N3
M1
X
detail X
H
b
4
b1
H
1
3
2
0
5
10 mm
scale
DIMENSIONS (millimetre dimensions are derived from the original inch dimensions)
UNIT
A
b
b1
c
D
D1
D2
H
M
M1
N
N2
N3
Q
mm
5.31
4.34
3.31
3.04
0.89
0.63
0.16
0.10
5.20
4.95
5.33
5.08
5.33
5.08
26.17
24.63
3.05
2.79
1.66
1.39
11.82
10.89
8.89
6.90
3.69
2.92
2.90
2.31
0.209
0.171
0.130
0.120
0.035 0.006
0.025 0.004
0.205 0.210 0.210
0.195 0.200 0.200
1.03
0.97
0.12
0.11
0.065 0.465 0.350
0.055 0.429 0.272
0.145
0.115
0.114
0.091
inches
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
w1
0.38
8-32
UNC
EUROPEAN
PROJECTION
0.015
ISSUE DATE
97-06-28
SOT172A1
September 1995
W
11
Philips Semiconductors
Product specification
NPN 6 GHz wideband transistor
BFQ270
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.
September 1995
12