Who can help me talk about the process of purchasing materials in electronic component factory?

The following is the information I know, I hope it will be useful to you ~

Electronic materials, also called electronic components, are the general names of components and devices.

1. Components: Products whose molecular composition has not changed during factory processing can be called components, and it is not necessary to be able to source devices.

It includes: resistance, capacitance and inductance. (also known as passive components)

(1) circuit devices: diodes, resistors, etc.

(2) Connecting devices: connectors, sockets, connecting cables and printed circuit boards (PCB).

2. Devices: Devices whose molecular structure has changed in the process of factory production and processing are called devices.

The equipment is divided into:

1. active device, its main features are: (1) self-consumption energy (2). It also needs an external power supply.

2. Discrete devices are divided into (1) bipolar transistors (2) field effect transistors (3) thyristors (4) semiconductor resistors and capacitors.

3. Analog integrated circuits mainly refer to integrated circuits composed of capacitors, resistors and transistors. And is used for processing analog signals. There are many analog integrated circuits, such as integrated operational amplifiers, comparators, logarithmic and exponential amplifiers, analog multipliers (dividers), phase-locked loops, power management chips and so on. The main circuits of analog integrated circuits are: amplifier, filter, feedback circuit, reference circuit, switched capacitor circuit, etc. Analog integrated circuit design is mainly obtained by experienced designers through manual circuit debugging and simulation, and the corresponding digital integrated circuit design is mostly automatically synthesized by using hardware description language under the control of EDA software.

4. Digital integrated circuit is a digital logic circuit or system that integrates components and wires on the same semiconductor chip. According to the number of gates or components and devices contained in digital integrated circuits, digital integrated circuits can be divided into small-scale integrated (SSI) circuits, medium-scale integrated MSI circuits, large-scale integrated (LSI) circuits, very large-scale integrated VLSI circuits and very large-scale integrated (ULSI) circuits. Small-scale integrated circuits contain no more than 10 gates or no more than 100 elements; Medium-scale integrated circuits contain 10 ~ 100 gates or 100 elements. LSI contains more than 100 gates, or the number of components is between 10 and 10. VLSI contains more than 10000 gates, or the number of components is between 10 and 10. The number of components in VLSI is between 10 and 10. It includes: basic logic gate, trigger, register, decoder, driver, counter, shaping circuit, programmable logic device, microprocessor, single chip microcomputer, DSP and so on.

The general procurement process is as follows

1, participate in new product development;

2, the basic information of new product material composition decomposition and specifications, unit price, batch unit price, quality requirements and other knowledge;

3. Looking for suppliers;

4. Determine the sample;

5. Issue a purchase contract or purchase agreement;

6. Control the time, quality and quantity in place as required;

7. Supplier management;

8. Supplier reconciliation;

9. Pay!