TPA3118D2DAPR, brand new and original. Same-day delivery or store pickup, contact us for more product information.

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?The difference between original, new and refurbished chips?

The integrated circuit chip is an important part of the composition of electronic products. In the electronic equipment system, the power management IC is responsible for the transformation, distribution, detection and other power management responsibilities of electric energy. It is mainly responsible for identifying the CPU power supply amplitude and generating corresponding power. Short-moment wave, promotes the power output of the post-stage circuit. When selling integrated circuit chips, we always encounter some customers who ask us about the difference between original, new and refurbished integrated circuits. The following is UnionPay Electronics. Let's briefly explain.

1. Original goods: refers to the original products produced by the original factory, which are divided into imported original products and domestic original products.

2. Bulk new goods: The word bulk is mainly used in IC chips. The meanings mainly include the following:

1. This product is not produced by the original factory. It may be produced by other manufacturers, but it is branded with the original brand, that is, OEM fake. The supplier calls it loose new or original goods to confuse people.

2. The goods are produced by the original factory, because some unqualified materials cause the product to fail to meet the standard, but the function is still possible. At this time, the original factory will reduce the price and deal with it through other channels. After the seller comes in, it is called Sanxin.

3. It is produced by the original factory, used, polished, tinned, and the feet are rubbed and cooled. After a series of treatments, the appearance looks good, and it is sold out. It is also called new, but it is actually refurbished.

3. Refurbished goods: After the product is produced from the original factory, after use, there is a certain degree of wear and tear, and the performance is different from that when the original factory was just produced. After special processing, its appearance or performance is restored to the same level. The state that is close to the original factory is called refurbishment.

4. Dismantling parts for used goods: those produced by the original factory, those that have been used, and those that have been removed from the circuit board. Unwashed.

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MOSFET is a type of FET (the other is JFET), which can be made into enhancement mode or depletion mode, P-channel or N-channel, a total of 4 types, but only the enhancement-type N-channel is required for theoretical applications. MOS tube and enhanced P-channel MOS tube, so NMOS is usually mentioned, or PMOS refers to these two. Field effect transistors are divided into two categories: junction field effect transistors (JFETs) and insulated gate field effect transistors (MOS transistors).

1. Junction Field Effect Transistor (JFET)

1. Classification of junction field effect transistors: There are two structural forms of junction field effect transistors, which are N-channel junction field effect transistors and P-channel junction field effect transistors.

The junction field effect transistor also has three electrodes, which are: gate; drain; source. The arrow direction of the gate in the circuit symbol can be understood as the forward conduction direction of the two PN junctions.

2. The working principle of the junction field effect transistor (take the N-channel junction field effect transistor as an example), the structure and symbol of the N-channel structure type field effect transistor, because the carriers in the PN junction have been depleted, so PN is basically non-conductive, forming a so-called depletion region. When the drain power supply voltage ED is constant, if the gate voltage is more negative, the depletion region formed by the PN junction interface is thicker, and the drain and source electrodes are connected. The narrower the conductive channel between the two, the smaller the drain current ID; on the contrary, if the gate voltage is not so negative, the channel becomes wider and the ID becomes larger, so the change of the drain current ID can be controlled by the gate voltage EG , that is, the FET is a voltage-controlled element.

2. Insulated gate field effect transistor

1. Classification of insulated gate field effect transistors (MOS tubes): Insulated gate field effect transistors also have two structural forms, which are N-channel type and P-channel type. No matter what the channel is, they are divided into two types: enhancement type and depletion type.

2. It is composed of metal, oxide and semiconductor, so it is also called metal-oxide-semiconductor field effect transistor, or MOS field effect transistor for short.

3. The working principle of the insulated gate type field effect transistor (with N-channel enhancement type MOS field effect transistor) It uses UGS to control the amount of "induced charges" to change the conduction channel formed by these "induced charges". condition, and then achieve the purpose of controlling the drain current. During the manufacture of the tube, a large number of positive ions appear in the insulating layer through the process, so more negative charges can be induced on the other side of the interface. These negative charges connect the N region of the hypertonic impurities and form a conductive channel channel, there is a large drain current ID even when VGS=0. When the gate voltage changes, the amount of charges induced in the channel also changes, and the width of the conductive channel also changes, so the drain current ID changes with the gate voltage. There are two working modes of the FET: when the gate voltage is zero, the drain current is larger, which is called dissipative type; when the gate voltage is zero, the drain current is also zero, and a certain gate voltage must be added. Only the drain current is called enhancement type.

There are many models in our company, and we can't list them all. Welcome to inquire and place an order! ! !

Safety X2 Y1, Y2 capacitors,

High and low voltage ceramic capacitors, CBB capacitors,

Polyester capacitors, monolithic capacitors, solid capacitors and electrolytic capacitors 50V0.1UF, 50V0.22UF, 50V0.33UF, 50V0.47UF, 50V1UF, 50V2.2UF, 16V470UF, 8X9, 16V470UF, 6X11, 16V680UF, 6X12, 16V680UF, 8X12 16V820UF， 8X12， 16V820UF， 8X12， 16V1000UF， 8X14， 16V330UF， 6X9 ，16V270UF ，8X9 ，16V560UF， 5.5X12 ，16V560UF 6X12 ，16V100UF， 6X9 ，25V100UF ，6X7 ，35V100UF ，6X7， 6.3V1000UF ，6X11， 6.3V820UF ，6X9 ， 6.3V560UF, 6X9

SI2300, SI2301, SI2302, SI2310

AO3400, AO3401, AO3407

SS8050-Y1, SS8550-Y2

S8050-J3Y, S8550-2TY

5551-G1, 5401-2L

LM385/LM236/LM311/LM336/LM258/LM285/LM224/LM567/LM1881…PC/BPC/JC817/OB2263/OB2269/FQPF2N60C/LM1875/BISS0001/KA3525//KA3524/LM833/cs4334/LP3211P/LP3211B

PCF8563T/PT2399/CD4020/CD4011/TC4011/LM2903/LM2904/LM2901/LM2902 etc.

2300, 2301, 2302, 2305, 3400, 3401

7N65, 10N65, 12N65, 20N65, 13N50, 18N50, 25N50

C945-CR, 3904-1AM, 9014-J6

T4, S4, SL SOD123 (SOD-123/323/523)

SI2300 SI2301 SI2302 SI2305 SI2310 SI2312 SI2317 SI2318

AO3400 AO3401 AO3402 AO3406 AO3407 AO3415 AO3416

RB521S/CS-30, (SOD-523/923)

MB6F, MB10F, MB6S, MB10S

AO4402 AO4403 AO4406 AO4407 AO4435 AO4606 AO4614

AO4805AO4812 AO4828 AO4438 AO9926 SI9435 SI4953

SS14, SS24, SS34, M7, A7, F7

Integrity cooperation, mutual benefit, willing to establish long-term cooperative partnership with new and old customers!

Shenzhen Chenhao Technology Co., Ltd. agent distribution: ST, INFINEON, MAX, TI, MPS (American core source), LUMINUS (Luminus), ANAX, Everest (Shunxin Semiconductor), Corpro (Zhenxin Technology), GD /Zhaoyi Innovation, Actions (Actions North), GMT Zhixin, WINBON/Winbond, WELTREND/Weicuan, Gowin (Gowin Semiconductor), Yutai, Fitipower (Tianyu Technology), HOLYCHIP Xinsheng, Innodisk (Yiyi) Dingxincun), TM Tianwei, AutoChips (Jiefa Technology), INJOINIC/English Jixin, Longsys (Longsys), Etron (Etron), ATMEL, FINTEK, SILIKRON, MINDMOTION Smart Micro, RUICHIPS, Ruijun Semiconductor, HK/Hangshun, HOOYI, BK, UT, NUVOTON, MT, BPS.NCE, IR, SHARP, IR, XILINX, INFINEON, SOUTHCHIP/South Core, MAXIM.TOSHIBA, BORUNS, IXYS.SANREX.ABB.POWER, ST, FAIRCHILD0Lontium (Longxun Semiconductor), Shunxin Semiconductor, Micro One (Nanjing Weimeng), HS, NUVOTON/New Tang, eEver (Yuqun Technology), AD, TI, AMD, ATMEL, ALTERA, RICHTEK, XILINX, TI /BB, FAIRCHILD, ST, PHILIPS, MOTOROLA, IR, ON, NSC, SHARP, TOSHIBA, VISHAY, BROADCOM, FENGHUA, TDK, Murata, SAMSUN, JET, HIROSE, CJ, HS, Sunlord, Well, TXC, KDS, Everlight , CHIPLED agent distribution and other world famous IC! Welcome new and old customers from all over the world to come to discuss cooperation and create a better tomorrow together! Business philosophy: honesty and trustworthiness, mutual benefit