Details

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BUY 2SA1284 https://www.utsource.net/itm/p/12607715.html

Parameter	Symbol	Min	Typical	Max	Unit	Notes
Collector-Emitter Voltage	VCEO	-	-	60	V
Collector-Base Voltage	VCBO	-	-	70	V
Emitter-Base Voltage	VEBO	-	-	6	V
Collector Current	IC	-	-	3	A	Continuous
Power Dissipation	PT	-	-	65	W	@ TA = 25掳C
Storage Temperature Range	TSTG	-55	-	150	掳C
Operating Temperature Range	TOP	-55	-	150	掳C
DC Current Gain	hFE	20	100	300	-	@ IC = 150mA, VCE = 10V
Transition Frequency	fT	-	200	-	MHz

Instructions for Use:

1. Mounting:

   • Ensure proper heat sinking when operating at high power levels to maintain junction temperature within safe limits.
   • Use recommended mounting torque for screws to avoid damage to the transistor.

2. Biasing:

   • Ensure that the base-emitter voltage (V_BE) is within the specified range to avoid damaging the transistor.
   • Use appropriate biasing circuits to maintain stable operation over temperature and supply voltage variations.

3. Overvoltage Protection:

   • Protect the collector-emitter (V_CE) and collector-base (V_CB) junctions from overvoltage conditions using clamping diodes or other protective circuits.

4. Current Limiting:

   • Use current-limiting resistors or other methods to ensure that the collector current (I_C) does not exceed the maximum rating.

5. Storage:

   • Store the transistor in a dry, cool place away from direct sunlight and extreme temperatures.

6. Handling:

   • Handle the transistor with care to avoid mechanical stress, which can lead to internal damage.
   • Use proper ESD (Electrostatic Discharge) protection to prevent damage from static electricity.

7. Testing:

   • Test the transistor under controlled conditions to verify its parameters before integrating it into a circuit.
   • Use a multimeter or a dedicated transistor tester to check for continuity and gain.

8. Circuit Design:

   • Refer to application notes and datasheets for specific circuit design recommendations and examples.
   • Consider the thermal resistance (R_th) of the transistor and the heat sink when designing the circuit to ensure adequate cooling.

9. Safety:

   • Always follow safety guidelines when working with high voltages and currents.
   • Ensure that the circuit is properly insulated and grounded to prevent electrical shock.

(For reference only)