Description
1 Piece
Ultra Reliable Power Transistor
General Description
The LM395 is a fast, monolithic power integrated circuit with complete overload protection. These devices,
which act as high gain power transistors, have included on
the chip, current limiting, power limiting, and thermal overload protection making them virtually impossible to destroy
from any type of overload. In the standard TO-3 transistor
power package, they will deliver load currents in excess of 1.0A and can switch 40V in 500 ns.
The inclusion of thermal limiting, a feature not easily available in discrete designs, provides virtually absolute protection against overload. Excessive power dissipation or inadequate heat sinking causes the thermal limiting circuitry to
turn off the device preventing excessive heating.
They offer a significant increase in reliability as well
as simplifying power circuitry. In some applications, where
protection is unusually difficult, such as switching regulators,
lamp or solenoid drivers where normal power dissipation is
low, the LM395 is especially advantageous.
The LM395 is easy to use and only a few precautions need
be observed. Excessive collector to emitter voltage can destroy the LM395 as with any power transistor. When the device is used as an emitter follower with low source impedance, it is necessary to insert a 5.0k resistor in series with
the base lead to prevent possible emitter follower oscillations. Although the device is usually stable as an emitter follower, the resistor eliminates the possibility of trouble without
degrading performance. Finally, since it has good high frequency response, supply bypassing is recommended.
The LM395 is available in the standard TO-3
package.
General Description
The LM395 is a fast, monolithic power integrated circuit with complete overload protection. These devices,
which act as high gain power transistors, have included on
the chip, current limiting, power limiting, and thermal overload protection making them virtually impossible to destroy
from any type of overload. In the standard TO-3 transistor
power package, they will deliver load currents in excess of 1.0A and can switch 40V in 500 ns.
The inclusion of thermal limiting, a feature not easily available in discrete designs, provides virtually absolute protection against overload. Excessive power dissipation or inadequate heat sinking causes the thermal limiting circuitry to
turn off the device preventing excessive heating.
They offer a significant increase in reliability as well
as simplifying power circuitry. In some applications, where
protection is unusually difficult, such as switching regulators,
lamp or solenoid drivers where normal power dissipation is
low, the LM395 is especially advantageous.
The LM395 is easy to use and only a few precautions need
be observed. Excessive collector to emitter voltage can destroy the LM395 as with any power transistor. When the device is used as an emitter follower with low source impedance, it is necessary to insert a 5.0k resistor in series with
the base lead to prevent possible emitter follower oscillations. Although the device is usually stable as an emitter follower, the resistor eliminates the possibility of trouble without
degrading performance. Finally, since it has good high frequency response, supply bypassing is recommended.
The LM395 is available in the standard TO-3
package.
Features
Internal thermal limiting
Greater than 1.0A output current
3.0 µA typical base current
500 ns switching time
2.0V saturation
Base can be driven up to 40V without damage
Directly interfaces with CMOS or TTL
100% electrical burn-in
Internal thermal limiting
Greater than 1.0A output current
3.0 µA typical base current
500 ns switching time
2.0V saturation
Base can be driven up to 40V without damage
Directly interfaces with CMOS or TTL
100% electrical burn-in
Steel TO3 package with gold plated base and legs
Mounting: Through Hole
Operating Temp Range: 0˚C to 125˚C
Package Type: TO-3
Packaging: Anti Static Bagged
Pin Count: 2
These came to us as part of a lot of surplus stock from a large ‘Milspec’ type Co. and have been kept in storage for some years, we have therefore classified them as ‘new other’. They are however in good serviceable condition.
These are genuine NS vintage parts, please see the photographs they are of the actual parts you will receive!
Beware listings that display an image of an anonymous generic part but claim to be authentic!
For datasheet search… LM395K
