Tektronix Oscilloscope problem

[WM6]

Fine, I hope you enjoy your scope soon.

Possible replacement: BFR96, BFR96H, BFR96T, BFR96S, 2n5852, 2SC1803, 2SC1949


LT4403

Bipolar NPN UHF-Microwave Transisitor
TRW, Inc.
V(BR)CBO (V)=30
I(C) Abs.(A) Collector Current=70m
Noise Figure Max. (dB)=1.7
@I(C) (A) (Test Condition)=10m
@V(CE) (V) (Test Condition)=8.0
@Freq. (Hz) (Test Condition)=500M
Semiconductor Material=Silicon
Status=Discontinued
Package=Micro-X
Military=N

BFR96


Type Designator: BFR96
Material of transistor: Si
Polarity: npn
Maximum collector power dissipation (Pc): 500mW
Maximum collector-base voltage (Ucb): 20V
Maximum collector-emitter voltage (Uce): 15V
Maximum emitter-base voltage (Ueb):
Maximum collector current (Ic max): 150mA
Maximum junction temperature (Tj): 175°C
Transition frequency (ft): 5GHz
Collector capacitance (Cc), Pf:
Forward current transfer ratio (hFE), min/max: 30MIN
Manufacturer of BFR96 transistor: PHILIPS
Package of BFR96 transistor: TO51
Application: Small Signal

[sido]

Hi Wm6, i have only found the below transistors on some old UHF Transceiver boards, not the exact replacement, but thought to post for you to have a look and see what you think?

Both the BFR90 and BFW92 are UHF transistors (NPN).

Cheers

[sido]

Forgot to mention, same package type to the original OEM.

Cheers Sido

[WM6]

Hi Wm6, i have only found the below transistors on some old UHF Transceiver boards, not the exact replacement, but thought to post for you to have a look and see what you think?

Both the BFR90 and BFW92 are UHF transistors (NPN).

Cheers

You can try with one of those too, check twice for correct pin connection before solder.


BFR90


Type Designator: BFR90
Material of transistor: Si
Polarity: npn
Maximum collector power dissipation (Pc): 180mW
Maximum collector-base voltage (Ucb): 20V
Maximum collector-emitter voltage (Uce): 15V
Maximum emitter-base voltage (Ueb): 2V
Maximum collector current (Ic max): 25mA
Maximum junction temperature (Tj): 150°C
Transition frequency (ft): 3GHz
Collector capacitance (Cc), Pf: 0.8
Forward current transfer ratio (hFE), min/max: 25MIN
Manufacturer of BFR90 transistor: PHILIPS
Package of BFR90 transistor: TO51
Application: Low Power, Switching


BFW92


Type Designator: BFW92
Material of transistor: Si
Polarity: npn
Maximum collector power dissipation (Pc): 130mW
Maximum collector-base voltage (Ucb): 25V
Maximum collector-emitter voltage (Uce): 15V
Maximum emitter-base voltage (Ueb): 2V
Maximum collector current (Ic max): 25mA
Maximum junction temperature (Tj): 125°C
Transition frequency (ft): 700MHz
Collector capacitance (Cc), Pf: 1
Forward current transfer ratio (hFE), min/max: 20/150
Manufacturer of BFW92 transistor: PHILIPS
Package of BFW92 transistor: TO51
Application: UHF, Low Power

[sido]

Will do so Wm6. I have downloaded the datasheets for the two now. Will look at them tomorrow and use what seems close to the original specs if i cannot find the BFR96.

I am sure i have the BFR96, just cannot remember where?

Talk to you soon.

Cheers Sido