1N749

The 1N749 is a type of single, Zener diode. It falls under the category of diodes, which are two-terminal, electronic semiconductor devices capable of conducting current in only one direction, while inhibiting it in the opposite direction. Normally, current can only pass through a diode when its anode is more positive than the cathode, allowing it to act as a valve, allowing current to flow one way, and not the other. The 1N749 is a specially designed diode, however, that is made to specifically turn the traditional idea of diodes on its head, allowing it to conduct current in both directions, but only at certain voltages.The diodes are composed of two differently doped semiconductor materials, referred to as p-type and n-type. P-type material is made of multiple electrons and can be viewed as having a negative charge. On the other hand, n-type material is made up of empty electron slots, referred to as holes, and is considered to have a positive charge. P-type and n-type semiconductor materials are placed next to each other, forming the junction. This junction is the unique property of the 1N749.In order to understand how the 1N749 works, it is important to understand the behavior of an empty electron slot (or hole). When a positive voltage is applied to the n-type material, electrical charge carriers are forced across the p-n junction. This is where the Zener effect comes in to play. When the electrons jump across this junction, they leave behind the empty electron slots on the n-type side of the junction. The electron slot left behind on the n-type side then begins to attract electrons from the p-type side of the junction. This is called Zener breakdown, and allows the diode to conduct current in both directions.In terms of its applications, the 1N749 is most commonly used as both a voltage regulator and transient suppressor. It is often used with an input voltage source (such as a transformer or battery), which can provide enough input voltage to reach the breakdown voltage of the diode. When this happens, the current is forced to reduce to a steady state, which can be controlled by changing the amount of input voltage. Additionally, the 1N749 can provide voltage protection against electrical transients, which can happen unexpectedly in an electrical circuit and cause damage to equipment.In conclusion, the 1N749 is a single Zener diode that behaves differently from normal diodes. This diode can be used as a voltage regulator or transient suppressor. It is composed of two differently doped semiconductor materials; one being p-type, and the other being n-type. When the n-type material is exposed to a positive voltage, electrons cross the junction, generating an electron slot on the n-type side in the process. This is called the Zener effect, and allows the diode to conduct current in both directions.

1N749A BK	Central Semi...	0.35 $	4997	DIODE ZENER 4.3V 500MW DO...
1N746A BK	Central Semi...	0.35 $	1605	DIODE ZENER 3.3V 500MW DO...
1N746A TR	Central Semi...	0.06 $	1000	DIODE ZENER 3.3V 500MW DO...
1N746A-1	Microsemi Co...	1.41 $	1000	DIODE ZENER 3.3V 500MW DO...
1N747A-1	Microsemi Co...	1.41 $	1000	DIODE ZENER 3.6V 500MW DO...
1N749A-1	Microsemi Co...	1.41 $	1000	DIODE ZENER 4.3V 500MW DO...
1N747A	Microsemi Co...	1.41 $	1000	DIODE ZENER 3.6V 500MW DO...
1N748A	Microsemi Co...	--	1000	DIODE ZENER 3.9V 500MW DO...
1N746	Microsemi Co...	1.41 $	1000	ZENER DIODEZener Diode
1N747	Microsemi Co...	1.41 $	1000	ZENER DIODEZener Diode
1N748	Microsemi Co...	1.41 $	1000	ZENER DIODEZener Diode
1N749	Microsemi Co...	1.41 $	1000	ZENER DIODEZener Diode
1N746A	Microsemi Co...	--	1000	ZENER DIODEZener Diode
1N749A	Microsemi Co...	1.41 $	1000	ZENER DIODEZener Diode
1N740	Microsemi Co...	1.5 $	1000	DIODE ZENER 120V 250MW DO...
1N740A	Microsemi Co...	1.5 $	1000	DIODE ZENER 120V 250MW DO...
1N741	Microsemi Co...	1.5 $	1000	DIODE ZENER 130V 250MW DO...
1N741A	Microsemi Co...	1.5 $	1000	DIODE ZENER 130V 250MW DO...
1N742	Microsemi Co...	1.5 $	1000	DIODE ZENER 150V 250MW DO...
1N742A	Microsemi Co...	1.5 $	1000	DIODE ZENER 150V 250MW DO...
1N743	Microsemi Co...	1.5 $	1000	DIODE ZENER 160V 250MW DO...
1N743A	Microsemi Co...	1.5 $	1000	DIODE ZENER 160V 250MW DO...
1N744	Microsemi Co...	1.5 $	1000	DIODE ZENERZener Diode
1N744A	Microsemi Co...	1.5 $	1000	DIODE ZENERZener Diode
1N745	Microsemi Co...	1.5 $	1000	DIODE ZENERZener Diode
1N745A	Microsemi Co...	1.5 $	1000	DIODE ZENERZener Diode
1N746AE3	Microsemi Co...	1.55 $	1000	ZENER DIODESZener Diode 3...
1N746AUR-1	Microsemi Co...	2.07 $	1000	ZENER DIODEZener Diode
1N747AUR-1	Microsemi Co...	2.07 $	1000	ZENER DIODEZener Diode
1N748AUR-1	Microsemi Co...	2.07 $	1000	ZENER DIODEZener Diode
1N749AUR-1	Microsemi Co...	2.07 $	1000	ZENER DIODEZener Diode
1N749A TR	Central Semi...	0.06 $	10000	DIODE ZENER 4.3V 500MW DO...
1N749ATR	ON Semicondu...	0.0 $	1000	DIODE ZENER 4.3V 500MW DO...
1N746ATR	ON Semicondu...	0.0 $	1000	DIODE ZENER 3.3V 500MW DO...
1N747ATR	ON Semicondu...	0.0 $	1000	DIODE ZENER 3.6V 500MW DO...
1N748ATR	ON Semicondu...	0.0 $	1000	DIODE ZENER 3.9V 500MW DO...
1N746A_S00Z	ON Semicondu...	0.0 $	1000	DIODE ZENER 3.3V 500MW 5%...
1N746A_T50A	ON Semicondu...	0.0 $	1000	DIODE ZENER 3.3V 500MW DO...
1N746A_T50R	ON Semicondu...	0.0 $	1000	DIODE ZENER 3.3V 500MW DO...
1N747A_S00Z	ON Semicondu...	0.0 $	1000	DIODE ZENER 3.6V 500MW 5%...