TRANSISTOR BD135/137/139

 NPN Epitaxial Silicon Transistor

Medium Power Linear and Switching
Applications
• Complement to BD136, BD138 and BD140 respectively

Collector-Base Voltage :
 BD135      45 volt
 BD137      60 volt
 BD139      80 volt

Collector-Emitter Voltage :
 BD135      45 volt
 BD137      60 volt
 BD139      80 volt

Emitter-Base Voltage 5 V

Collector Current (DC) 1.5 A
Collector Current (Pulse) 3.0 A
Base Current 0.5 A
Collector Dissipation (TC=25°C) 12.5 W
Collector Dissipation (Ta=25°C) 1.25 W
Junction Temperature 150 °C
Storage Temperature - 55 ~ 150 °C

Transistor TIP 41, TIP41A, TIP41B, TIP41C

 DISCRIPTION

Designed for Complementary Use with the
TIP42 Series
- 65 W at 25°C Case Temperature-
- 6 A Continuous Collector Current-
- 10 A Peak Collector Current-
- Customer-Specified Selections Available

DATASHEET

Collector-base voltage (IE = 0)
TIP41      80 VOLT
TIP41A    100 VOLT
TIP41B     120 VOLT
TIP41C    140 VOLT

Collector-emitter voltage (IB = 0)
TIP41      40 VOLT
TIP41A    60 VOLT
TIP41B    80 VOLT
TIP41C   100 VOLT

Emiter-base voltage  5 volt
Continuous collector current   6 Ampere
Peak collector current           10 A
Continuous base current         3 A
Continuous device dissipation  65 W
Operating junction temperature range  -65 to 150 derajat celcius

Demikian sedikit data mengenai transistor TIP41, smoga bermanfaat

Transistor 2N3055

DISCRIPTION

The 2N3055 is a silicon epitaxial-base NPN
transistor in Jedec TO-3 metal case. It is intended
for power switching circuits, series and shunt
regulators, output stages and high fidelity
amplifiers.

DATASHEETS

 Collector-Base Voltage (IE = 0) 100 V
 Collector-Emitter Voltage (RBE = 100W) 70 V
 Collector-Emitter Voltage (IB = 0) 60 V
 Emitter-Base Voltage (IC = 0) 7 V
IC Collector Current 15 A
IB Base Current 7 A
Ptot Total Dissipation at Tc 3 25 oC 115 W
Ts tg Storage Temperature -65 to 200 oC
Tj Max. Operating Junction Temperature 200 oC

SERVIS DVD Player

Kali ini DVD player merk Innovo, dengan kerusakan Pintu mekaniknya tidak bisa keluar, pengecekan di mulai, Pertama Player dinyalakan terlihat nyala, Display lcd dan lampu indikator semua on. tekan tombol open/close, prev/next dll tidak ada yang bereakasi.

oke, analisa saya pertama pada tombolnya ( tombolnya ndak beres )

Buka casing Dvd player tersebut, setelah itu cek tegangan pada regulator powersupply, terukur tegangan +5v, +12v dan -12v. its ok. Kembali pada kecurigaan saya yang pertama tadi yaitu pada tombol-tombolnya, saya test dengan menggunakan ohm meter, teryata tombolnya mati, kemudian tanpa panjang lebar berpikir langsung saja ganti semua tombolnya. BERES.

Cek lagi untuk tombol-tombolnya sambil Player dinyalakan. Hasilnya sudah oke.
smoga ada manfaatnya.