1. Product profile
1.1 General description
The BFR505 is an NPN silicon planar epitaxial transistor, intended for applications in the
RF front end in wideband applications in the GHz range, such as analog and digital
cellular telephones, cordless telephones (CT1, CT2, DECT, etc.), radar detectors, pagers
and satellite TV tuners (SATV).
The transistor is encapsulated in a plastic SOT23 envelope.
1.2 Features and benefits
High power gain
Low noise figure
High transition frequency
Gold metallization ensures excellent reliability.
1.3 Quick reference data
BFR505
NPN 9 GHz wideband transistor
Rev. 4 — 7 September 2011 Product data sheet
SOT23
Table 1. Quick reference data
Symbol Parameter Conditions Min Typ Max Unit
V
CBO
collector-base
voltage
open emitter - - 20 V
V
CES
collector-emitter
voltage
R
BE
= 0 --15V
I
C
DC collector
current
--18mA
P
tot
total power
dissipation
up to T
s
= 135 C
[1]
--150mW
h
FE
DC current gain I
C
= 5 mA; V
CE
= 6 V 60 120 250
C
re
feedback
capacitance
I
C
= i
c
= 0 A; V
CB
= 6 V; f = 1 MHz - 0.3 - pF
f
T
transition frequency I
C
= 5 mA; V
CE
= 6 V; f = 1 GHz - 9 - GHz
G
UM
maximum unilateral
power gain
I
C
= 5 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 900 MHz
-17-dB
I
C
= 5 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 2 GHz
-10-dB
S
21
2
insertion power
gain
I
C
= 5 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 900 MHz
13 14 - dB
BFR505 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 4 — 7 September 2011 2 of 14
NXP Semiconductors
BFR505
NPN 9 GHz wideband transistor
[1] T
s
is the temperature at the soldering point of the collector tab.
2. Pinning information
3. Ordering information
4. Marking
[1] * = p: made in Hong Kong.
* = t: made in Malaysia.
* = W: made in China.
F noise figure
s
=
opt
; I
C
= 1.25 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 900 MHz
-1.21.7dB
s
=
opt
; I
C
= 5 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 900 MHz
-1.62.1dB
s
=
opt
; I
C
= 1.25 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 2 GHz
-1.9-dB
Table 1. Quick reference data
…continued
Symbol Parameter Conditions Min Typ Max Unit
Table 2. Discrete pinning
Pin Description Simplified outline Symbol
1base
2emitter
3 collector
12
3
sym021
3
2
1
Table 3. Ordering information
Type number Package
Name Description Version
BFR505 - plastic surface mounted package; 3 leads SOT23
Table 4. Marking table
Type number Marking code
[1]
BFR505 31*
BFR505 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 4 — 7 September 2011 3 of 14
NXP Semiconductors
BFR505
NPN 9 GHz wideband transistor
5. Limiting values
[1] T
s
is the temperature at the soldering point of the collector tab.
6. Thermal characteristics
[1] T
s
is the temperature at the soldering point of the collector tab.
7. Characteristics
Table 5. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min Max Unit
V
CBO
collector-base voltage open emitter - 20 V
V
CES
collector-emitter voltage R
BE
= 0 -15V
V
EBO
emitter-base voltage - 2.5 V
I
C
DC collector current continuous - 18 mA
P
tot
total power dissipation up to T
s
= 135 C
[1]
-150mW
T
stg
storage temperature 65 +150 C
T
j
junction temperature - 175 C
Table 6. Thermal characteristics
Symbol Parameter Conditions Typ Unit
R
th(j-s)
from junction to soldering point
[1]
260 K/W
Table 7. Characteristics
T
j
= 25
C unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
I
CBO
collector cut-off current I
E
= 0 A; V
CB
= 6 V --50nA
h
FE
DC current gain I
C
= 5 mA; V
CE
= 6 V 60 120 250
C
e
emitter capacitance I
C
= i
c
= 0 A; V
EB
= 0.5 V;
f = 1 MHz
-0.4-pF
C
c
collector capacitance I
E
= i
e
= 0 A; V
CB
= 6 V;
f = 1 MHz
-0.4-pF
C
re
feedback capacitance I
C
= i
c
= 0 A; V
CB
= 6 V;
f = 1 MHz
-0.3-pF
f
T
transition frequency I
C
= 5 mA; V
CE
= 6 V;
f=1GHz
-9-GHz
G
UM
maximum unilateral
power gain
I
C
= 5 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 900 MHz
[1]
-17-dB
I
C
= 5 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 2 GHz
-10-dB
S
21
2
insertion power gain I
C
= 5 mA; V
CE
= 6 V;
T
amb
= 25 C; f = 900 MHz
13 14 - dB

BFR505,215

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
RF Bipolar Transistors NPN 15V 9GHZ
Lifecycle:
New from this manufacturer.
Delivery:
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