Details

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BUY 2SC4278 https://www.utsource.net/itm/p/12594805.html

Parameter	Symbol	Min	Typical	Max	Unit	Conditions
Collector-Emitter Voltage	VCEO	-	-	400	V	IC = 150 mA, TC = 25掳C
Collector-Base Voltage	VCBO	-	-	600	V	IC = 0, TC = 25掳C
Emitter-Base Voltage	VEBO	-	-	5	V	IE = 5 mA, TC = 25掳C
Collector Current	IC	-	-	150	mA	VCE = 400 V, TC = 25掳C
Base Current	IB	-	-	15	mA	VCE = 400 V, TC = 25掳C
DC Current Gain	hFE	30	100	300	-	IC = 50 mA, VCE = 10 V, TC = 25掳C
Transition Frequency	fT	-	200	-	MHz	IC = 10 mA, VCE = 10 V, TC = 25掳C
Storage Temperature	TSTG	-55	-	150	掳C	-
Operating Temperature	TOP	-55	-	150	掳C	-
Power Dissipation	PT	-	-	625	mW	TC = 25掳C

Instructions for Use:

1. Mounting:

   • Ensure proper heat dissipation by mounting the transistor on a heatsink if operating at high power levels.
   • Avoid mechanical stress on the leads during soldering and handling.

2. Soldering:

   • Use a soldering iron with a temperature not exceeding 300掳C.
   • Solder each lead for no more than 3 seconds to prevent thermal damage.

3. Biasing:

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

4. Protection:

   • Use series resistors to limit base current and protect against overcurrent conditions.
   • Consider adding reverse-biased diodes across the collector-emitter junction to protect against transient voltage spikes.

5. Storage:

   • Store the transistor in a dry, cool place away from direct sunlight.
   • Handle with care to avoid static discharge, which can damage the device.

6. Testing:

   • Use a multimeter or transistor tester to verify the functionality of the transistor before installation.
   • Check for short circuits and open circuits between the leads.

By following these guidelines, you can ensure reliable and efficient operation of the 2SC4278 transistor in your circuits.

(For reference only)