Transistors (results: 8525)
Product | Cart |
Open channel resistance
|
Max. drain current
|
Max. power loss
|
Case
|
Manufacturer
|
Power dissipation
|
Current gain factor
|
Cutoff frequency
|
Gate charge
|
Max. dissipated power
|
Max. drain-source voltage
|
Max. collector current
|
Max collector-emmiter voltage
|
Max. collector current
|
Max collector current (impulse)
|
Forvard volatge [Vgeth]
|
Transistor type
|
Max. drain-gate voltage
|
Operating temperature (range)
|
Max. gate-source Voltage
|
Collector-emitter voltage
|
Mounting
|
Gate-emitter voltage
|
Transistor circuits [Y/N]
|
||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AP9567GH-HF-3 ADVANCED POWER
P-MOSFET 40V 22A 34.7W
|
|||||||||||||||||||||||||||||||||||||
In stock:
380 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 500 Quantity (multiple 1) |
70mOhm | 22A | 34,7W | TO252 | Advanced Power Electronics Corp. | 40V | P-MOSFET | -55°C ~ 150°C | 20V | SMD | ||||||||||||||||||||||||||
AP9926GEO APEC
2xN-MOSFET 20V 28mΩ 4.6A 1W
|
|||||||||||||||||||||||||||||||||||||
In stock:
180 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 200 Quantity (multiple 1) |
40mOhm | 4,6A | 1W | TSSOP08 | Advanced Power Electronics Corp. | 20V | 2xN-MOSFET | -55°C ~ 150°C | 12V | SMD | ||||||||||||||||||||||||||
AP9962GH-HF-3 ADVANCED POWER
N-MOSFET 40V 32A 27.8W
|
|||||||||||||||||||||||||||||||||||||
In stock:
150 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 500 Quantity (multiple 1) |
30mOhm | 32A | 27,8W | TO252 | Advanced Power Electronics Corp. | 40V | N-MOSFET | -55°C ~ 150°C | 20V | SMD | ||||||||||||||||||||||||||
AP9971GH-HF-3 ADVANCED POWER
N-MOSFET 60V 25A 39W
|
|||||||||||||||||||||||||||||||||||||
Manufacturer:
Advanced Power Electronics Corp. Manufacturer part number: AP9971GH-HF-3 RoHS Case style: TO252t/r |
In stock:
240 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 500 Quantity (multiple 1) |
50mOhm | 25A | 39W | TO252 | Advanced Power Electronics Corp. | 60V | N-MOSFET | -55°C ~ 150°C | 20V | SMD | ||||||||||||||||||||||||||
AP9977GH-HF-3 ADVANCED POWER
N-MOSFET 60V 11A 21W
|
|||||||||||||||||||||||||||||||||||||
In stock:
240 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 500 Quantity (multiple 1) |
125mOhm | 11A | 21W | TO252 | Advanced Power Electronics Corp. | 60V | N-MOSFET | -55°C ~ 150°C | 25V | SMD | ||||||||||||||||||||||||||
AP9997GK-HF-3 ADVENCED POWER
N-MOSFET 100V 3.2A 2W
|
|||||||||||||||||||||||||||||||||||||
In stock:
285 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 500 Quantity (multiple 1) |
200mOhm | 3,2A | 2,8W | SOT223 | Advanced Power Electronics Corp. | 100V | N-MOSFET | -55°C ~ 150°C | 20V | SMD | ||||||||||||||||||||||||||
IGD06N60TATMA1 Infineon Technologies
IGBT 600V 12A 88W TO252-3 TrenchStop -40+175°C
|
|||||||||||||||||||||||||||||||||||||
In stock:
80 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 500 Quantity (multiple 1) |
TO252/3 (DPAK) | Infineon Technologies | 42nC | 88W | 12A | 18A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | SMD | 20V | |||||||||||||||||||||||||
2SB1188
PNP -2A -32V 500mW 100MHz
|
|||||||||||||||||||||||||||||||||||||
In stock:
15 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 300 Quantity (multiple 1) |
SOT89 | ROHM | 500mW | 390 | 100MHz | 2A | 32V | PNP | -55°C ~ 150°C | |||||||||||||||||||||||||||
IGP30N60H3
Transistor IGBT ; 600V; 20V; 60A; 120A; 187W; 4,1V~5,7V; 165nC; -40°C~175°C; IGP30N60H3XKSA1
|
|||||||||||||||||||||||||||||||||||||
In stock:
33 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 50 Quantity (multiple 1) |
TO220 | Infineon Technologies | 165nC | 187W | 60A | 120A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGP30N60H3XKSA1 Case style: TO220 |
External warehouse:
300 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 50 Minimum order amount must exceed 20 Euro. |
TO220 | Infineon Technologies | 165nC | 187W | 60A | 120A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
IGW15N120H3FKSA1
Trans IGBT ; 1200V; 20V; 30A; 60A; 217W; 5,0V~6,5V; 75nC; -40°C~175°C; Odpowiednik: IGW15N120H3;
|
|||||||||||||||||||||||||||||||||||||
In stock:
10 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 10 Quantity (multiple 1) |
TO247 | Infineon Technologies | 75nC | 217W | 30A | 60A | 5,0V ~ 6,5V | -40°C ~ 175°C | 1200V | SMD | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW15N120H3FKSA1 Case style: TO247 |
External warehouse:
697 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 75nC | 217W | 30A | 60A | 5,0V ~ 6,5V | -40°C ~ 175°C | 1200V | SMD | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW15N120H3FKSA1 Case style: TO247 |
External warehouse:
93 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 1 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 75nC | 217W | 30A | 60A | 5,0V ~ 6,5V | -40°C ~ 175°C | 1200V | SMD | 20V | |||||||||||||||||||||||||
IGW25N120H3
Transistor IGBT ; 1200V; 20V; 50A; 100A; 326W; 5,0V~6,5V; 115nC; -40°C~175°C; IGW25N120H3FKSA1
|
|||||||||||||||||||||||||||||||||||||
In stock:
27 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 115nC | 326W | 50A | 100A | 5,0V ~ 6,5V | -40°C ~ 175°C | 1200V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW25N120H3FKSA1 Case style: TO247 |
External warehouse:
437 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 1 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 115nC | 326W | 50A | 100A | 5,0V ~ 6,5V | -40°C ~ 175°C | 1200V | THT | 20V | |||||||||||||||||||||||||
IGW30N60T
Transistor IGBT ; 600V; 20V; 45A; 90A; 187W; 4,1V~5,7V; 167nC; -40°C~175°C; IGW30N60TFKSA1
|
|||||||||||||||||||||||||||||||||||||
In stock:
25 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 167nC | 187W | 45A | 90A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW30N60TFKSA1 Case style: TO247 |
External warehouse:
240 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 167nC | 187W | 45A | 90A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
IGW40N60H3FKSA1
IGBT 600V 80A 306W
|
|||||||||||||||||||||||||||||||||||||
In stock:
30 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 223nC | 306W | 80A | 160A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW40N60H3FKSA1 Case style: TO247 |
External warehouse:
65 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 223nC | 306W | 80A | 160A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW40N60H3FKSA1 Case style: TO247 |
External warehouse:
165 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 1 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 223nC | 306W | 80A | 160A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW40N60H3FKSA1 Case style: TO247 |
External warehouse:
2260 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 240 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 223nC | 306W | 80A | 160A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
IGW40N65F5FKSA1
IGBT 650V 74A 255W
|
|||||||||||||||||||||||||||||||||||||
In stock:
30 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 95nC | 250W | 74A | 120A | 3,2V ~ 4,8V | -40°C ~ 175°C | 650V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW40N65F5FKSA1 Case style: TO247 |
External warehouse:
492 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 1 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 95nC | 250W | 74A | 120A | 3,2V ~ 4,8V | -40°C ~ 175°C | 650V | THT | 20V | |||||||||||||||||||||||||
2SB1647
Trans Darlington PNP 150V 15A 130000mW 3-Pin(3+Tab) TO-3P Para z 2SD2560
|
|||||||||||||||||||||||||||||||||||||
In stock:
28 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO 3P | Sanken | 130W | 5000 | 45MHz | 15A | 150V | PNP | -55°C ~ 150°C | |||||||||||||||||||||||||||
Manufacturer:
import Manufacturer part number: 2SB1647 RoHS Case style: TO 3P |
In stock:
22 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 30/90 Quantity (multiple 1) |
TO 3P | Sanken | 130W | 5000 | 45MHz | 15A | 150V | PNP | -55°C ~ 150°C | |||||||||||||||||||||||||||
In stock:
20 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 20 Quantity (multiple 1) |
TO 3P | Sanken | 130W | 5000 | 45MHz | 15A | 150V | PNP | -55°C ~ 150°C | |||||||||||||||||||||||||||
IGW50N60H3
IGBT 600V 100A 333W IGW50N60H3FKSA1
|
|||||||||||||||||||||||||||||||||||||
In stock:
30 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 315nC | 333W | 100A | 200A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW50N60H3FKSA1 Case style: TO247 |
External warehouse:
2040 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 315nC | 333W | 100A | 200A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
IGW50N65F5FKSA1
IGBT 650V 80A 305W
|
|||||||||||||||||||||||||||||||||||||
In stock:
50 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30/60 Quantity (multiple 1) |
TO247 | Infineon Technologies | 120nC | 305W | 80A | 150A | 3,2V ~ 4,8V | -40°C ~ 175°C | 650V | SMD | 20V | |||||||||||||||||||||||||
Manufacturer:
Infineon Manufacturer part number: IGW50N65F5FKSA1 Case style: TO247 |
External warehouse:
58 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 1 Minimum order amount must exceed 20 Euro. |
TO247 | Infineon Technologies | 120nC | 305W | 80A | 150A | 3,2V ~ 4,8V | -40°C ~ 175°C | 650V | SMD | 20V | |||||||||||||||||||||||||
IGW60T120
IGBT 1200V 100A 375W IGW60T120FKSA1
|
|||||||||||||||||||||||||||||||||||||
In stock:
40 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 280nC | 375W | 100A | 150A | 5,0V ~ 6,5V | -40°C ~ 150°C | 1200V | THT | 20V | |||||||||||||||||||||||||
2SB772P
PNP 3A 30V 10W 80MHz 160 < beta < 320
|
|||||||||||||||||||||||||||||||||||||
Manufacturer:
LGE Manufacturer part number: 2SB772 RoHS Case style: TO126 |
In stock:
12355 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 200 Quantity (multiple 1) |
TO126 | UNISONIC TECHNOLOGIES CO., LTD | 10W | 320 | 80MHz | 3A | 30V | PNP | -55°C ~ 150°C | |||||||||||||||||||||||||||
IGW75N60T
Transistor IGBT ; 600V; 20V; 150A; 225A; 428W; 4,1V~5,7V; 470nC; -40°C~175°C; IGW75N60TFKSA1
|
|||||||||||||||||||||||||||||||||||||
In stock:
35 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 470nC | 428W | 150A | 225A | 4,1V ~ 5,7V | -40°C ~ 175°C | 600V | THT | 20V | |||||||||||||||||||||||||
IHW15N120R3
Transistor IGBT ; 1200V; 20V; 30A; 45A; 254W; 5,1V~6,4V; 165nC; -40°C~175°C; IHW15N120R3FKSA1
|
|||||||||||||||||||||||||||||||||||||
In stock:
20 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 165nC | 254W | 30A | 45A | 5,1V ~ 6,4V | -40°C ~ 175°C | 1200V | THT | 20V | |||||||||||||||||||||||||
IHW20N135R3
Transistor IGBT ; 1350V; 20V; 40A; 60A; 310W; 5,1V~6,4V; 195nC; -40°C~175°C;
|
|||||||||||||||||||||||||||||||||||||
In stock:
0 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 30 Quantity (multiple 1) |
TO247 | Infineon Technologies | 195nC | 310W | 40A | 60A | 5,1V ~ 6,4V | -40°C ~ 175°C | 1350V | THT | 20V | |||||||||||||||||||||||||
AUIRF1010EZS International Rectifier
MOSFET N-CH 60V 84A Automotive
|
|||||||||||||||||||||||||||||||||||||
Manufacturer:
International Rectifier Manufacturer part number: AUIRF1010EZS RoHS Case style: D2PAK |
In stock:
6 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 10 Quantity (multiple 1) |
8,5mOhm | 84A | 140W | D2PAK | International Rectifier | 60V | N-MOSFET | -55°C ~ 175°C | 20V | SMD | ||||||||||||||||||||||||||
2SC1815
NPN 150mA 50V 400mW 80MHz Odpowiednik 2SC1815-CEN
|
|||||||||||||||||||||||||||||||||||||
Manufacturer:
HOTTECH Manufacturer part number: 2SC1815 RoHS Case style: TO92bul |
In stock:
2270 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 1000/9000 Quantity (multiple 10) |
TO92 | HOTTECH | 400mW | 700 | 80MHz | 150mA | 50V | NPN | -55°C ~ 125°C | |||||||||||||||||||||||||||
2SC1815 Central Semiconductor Corp.
Transistor: NPN; bipolar; 50V; 0.15A; 400mW; TO92 2SC1815-CEN
|
|||||||||||||||||||||||||||||||||||||
Manufacturer:
CEN - Central Semiconductor Corp. Manufacturer part number: 2SC1815 RoHS Case style: TO92 |
In stock:
10 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 10 Quantity (multiple 1) |
TO92 | Central Semiconductor Corp. | 400mW | 700 | 80MHz | 150mA | 50V | NPN | -55°C ~ 125°C | |||||||||||||||||||||||||||
AUIRF1404 International Rectifier
MOSFET N-CH 40V 202A Automotive
|
|||||||||||||||||||||||||||||||||||||
Manufacturer:
International Rectifier Manufacturer part number: AUIRF1404 RoHS Case style: TO220AB |
In stock:
18 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 50 Quantity (multiple 1) |
4mOhm | 202A | 333W | TO220AB | International Rectifier | 40V | N-MOSFET | -55°C ~ 175°C | 20V | THT | ||||||||||||||||||||||||||
2SC1815 SLKOR
Transistor NPN; 700; 400mW; 50V; 150mA; 80MHz; -55°C ~ 150°C; Equivalent: 2SC1815-CEN;
|
|||||||||||||||||||||||||||||||||||||
In stock:
2300 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 1000/3000 Quantity (multiple 10) |
TO220 | SLKOR | 400mW | 700 | 80MHz | 150mA | 50V | NPN | -55°C ~ 150°C | |||||||||||||||||||||||||||
2SC1815
Transistor NPN; 700; 400mW; 50V; 150mA; 80MHz; -55°C ~ 150°C;
|
|||||||||||||||||||||||||||||||||||||
In stock:
6000 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 3000 Quantity (multiple 10) |
SOT23 | HOTTECH | 400mW | 700 | 80MHz | 150mA | 50V | NPN | -50°C ~ 150°C | N/A | ||||||||||||||||||||||||||
2SC2078 JSMICRO
Transistor NPN; 200; 1,2W; 75V; 3A; 100MHz; -55°C ~ 150°C;
|
|||||||||||||||||||||||||||||||||||||
In stock:
14 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 50 Quantity (multiple 1) |
TO220 | JSMICRO | 1,2W | 200 | 100MHz | 3A | 75V | NPN | -55°C ~ 150°C | |||||||||||||||||||||||||||
Manufacturer:
JSMSEMI Manufacturer part number: 2SC2078 RoHS Case style: TO220 |
In stock:
100 pcs. |
||||||||||||||||||||||||||||||||||||
|
Packaging: 50 Quantity (multiple 1) |
TO220 | JSMICRO | 1,2W | 200 | 100MHz | 3A | 75V | NPN | -55°C ~ 150°C | |||||||||||||||||||||||||||
AUIRF3710ZS D2PAK
MOSFET N-CH 100V 59A Automotive
|
|||||||||||||||||||||||||||||||||||||
In stock:
20 pcs. |
|||||||||||||||||||||||||||||||||||||
|
Packaging: 50 Quantity (multiple 1) |
18mOhm | 59A | 160W | D2PAK | International Rectifier | 100V | N-MOSFET | -55°C ~ 175°C | 20V | SMD |
Transistors
Field effect, bipolar and IGBT transistors - all those three types can be found in the Micros store. Get acquainted with the usage of transistors and what are the differences between particular types. Please check why it is worth choosing products offered by us.
What is a transistor and what is it used for?
Transistor is a semiconductor that has the capability of amplifying the electric signal.
The device is characterised by small size, hence it replaced vacuum tubes used before. It is believed that one of the main factors for the electronic development acceleration in the recent decades was introducing transistors to the market. It was possible thanks to the capability of significantly amplifying the signal by using small and not so complicated elements. However, why in fact it turned out to be that important and what are the uses of transistors in present day electronics? Here are few examples:
- It is the most important part of amplifiers;
- It is used as a structural element in semiconductor memory;
- It takes part in a signal transmission, e.g. in phase shift modules and generators;
Types of transistors
It is hard to answer the question “What are transistors used for?” without explaining what are the differences between them. In Micros offer you will find every transistor that you might need. Our offer includes devices with a variety of applications, because our aim is to meet the needs of every customer. When it comes to transistors, we can distinguish three main types, and dozens of devices from each type can be found in the relevant product category in our store. The three main types are:
- Field effect transistors
- Bipolar transistors
- IGBT transistors
We can assume that the field effect transistors are the most classic version of transistors. This invention is nearly 100 years old, however it is still incredibly useful. FET(Field Effect Transistor) consists of one semiconductor layer and the current is controlled by using the electromagnetic field.
Bipolar transistors, which are also available in our offer, are made up of three semiconductor layers, and each one of them represents a different type of semiconductivity. IGBT transistors on the other hand are a variety of bipolar transistors equipped with additional insulated gate.
Transistors in our offer
Our offer includes transistors with a vast variety of applications. We provide numerous FET models, called unipolar, which are essential parts of integrated circuits or switches. If you need parts for current amplifiers, choose our bipolar transistors. Moreover, essential parts for photovoltaic installations can be found in the “IGBT Transistors” category.
Our products come from proven manufacturers. Among our transistor suppliers you will find such brands as: NXP, Hottech, Infineon or Born. Each transistor is checked before being admitted to trading. These steps are taken in order to be sure that the client will receive a qualitative and fully functioning device.