Details

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BUY 2SA957 https://www.utsource.net/itm/p/12609259.html

Parameter	Symbol	Min	Typ	Max	Unit
Collector-Emitter Voltage	Vceo	-	-	40	V
Base-Emitter Voltage	Vbe	-	-	6	V
Collector Current	Ic	-	-	1	A
Base Current	Ib	-	-	100	mA
Power Dissipation	Ptot	-	-	35	W
Junction Temperature	Tj	-	-	150	掳C
Storage Temperature	Tstg	-55	-	150	掳C

Instructions for Use:

1. Mounting and Handling:

   • Ensure that the transistor is handled with care to avoid mechanical damage.
   • Mount the transistor on a heat sink if operating at high power levels to maintain junction temperature within safe limits.

2. Biasing:

   • Use appropriate biasing circuits to ensure stable operation and prevent thermal runaway.
   • Ensure that the base-emitter voltage (Vbe) does not exceed the maximum rating.

3. Power Dissipation:

   • Calculate the power dissipation (Pd = Vce * Ic) and ensure it does not exceed the maximum power dissipation (Ptot).
   • Use a heat sink if necessary to keep the junction temperature below 150掳C.

4. Storage and Operating Temperature:

   • Store the transistor in a dry environment within the storage temperature range (-55掳C to 150掳C).
   • Operate the transistor within the specified junction temperature range to avoid thermal damage.

5. Electrical Connections:

   • Connect the collector, base, and emitter terminals correctly according to the circuit diagram.
   • Use appropriate wire gauges and connections to handle the current and voltage ratings.

6. Testing:

   • Test the transistor using a multimeter or transistor tester to verify its functionality before installation.
   • Check for any short circuits or open circuits in the connections.

7. Safety:

   • Always follow proper safety procedures when working with electrical components.
   • Use protective equipment such as gloves and safety glasses when handling the transistor.

(For reference only)