Protel component Encapsulation

Part encapsulation refers to the appearance and solder joints indicated when the actual part is soldered to the circuit board. It is a pure concept of space, so different components can share the same part encapsulation, and the same component can have different parts encapsulation. Such as resistance, there is a traditional plug-in type, this component is large, the circuit board must be drilled to place the component, after the completion of the drill, insert the component, then over tin furnace or spray Tin (can also be manually welded ), the cost is relatively high. newer designs use small surface SMD components that do not need to be drilled, and use steel films to pour semi-fused solder paste into the circuit board, put the SMD component on, and then weld it to the circuit board.

Resistance axial
Polar capacitor Rad
Electrolytic Capacitor RB-
Potentiometer Vr
Diode
Transistor
Power supply pressure block 78 and 79 series TO-126H and TO-126V
The same as the transistor
D-44 D-37 D-46
Single-row multi-needle socket con sip
Dual-row direct plug-in dip
Crystal Oscillator xtal1
Resistance: RES1, RES2, RES3, res4; Axial Series
Polar capacitance: CAP; encapsulation property is RAD-0.1 to rad-0.4
Electrolytic Capacitor: electroi; encapsulation attribute: rb.2/. 4 to rb.5/1.0
Potentiometer: pot1, pot2; encapsulation property is vr-1 to vr-5
Diode: encapsulation property: Diode-0.4 (Low Power) Diode-0.7 (high power)
Transistor: the common encapsulation attribute is to-18 (Common Transistor) to-22 (High-Power Transistor) to-3 (high-power dington tube)
The power supply regulator has 78 and 79 series; 78 series such as 7820, etc.
Series 79 includes 7920, etc.
Common encapsulation attributes include to126h and to126v.
Bridge: bridge1, bridge2: encapsulation properties for D series (D-44, D-37, D-46)
Resistance: AXIAL0.3-AXIAL0.7 where 0.4-0.7 refers to the length of the resistance, usually with axial0.4
Porcelain capacitor: RAD0.1-RAD0.3. Among them, 0.1-0.3 refers to the capacitance size, generally rad0.1
Electrolytic Capacitor: rb.1/. 2-rb.4/. 8 wherein. 1/. 2-.4/. 8 indicates the capacitor size. Generally, B .1/. 2 is used for 100uf, B .2/. 4 is used for 100uf-470uf, and rb.3/. 6 is used for 470uf.
Diode: DIODE0.4-DIODE0.7 of which 0.4-0.7 refers to the length of the diode, usually with diode0.4
Light Emitting Diode: rb.1/. 2
Integrated Block: DIP8-DIP40, where 8-40 refers to how many feet, 8 feet is the dip8 SMD Resistance
0603 indicates that the package size has nothing to do with the specific resistance, but the package size is usually related to the power.
0201 1/20 million
0402 1/16 million
0603 1/10 million
0805 1/8 million
1206 1/4 million
The relationship between the shape size and encapsulation of the capacitor resistance is as follows:
0402 = 1.0x0.5
0603 = 1.6x0.8
0805 = 2.0x1.2
1206 = 3.2x1.6
1210 = 3.2x2.5
1812 = 4.5x3.2
2225 = 5.6X6.5

For part encapsulation, components in the Lib Library and other libraries have fixed component encapsulation, because the components in this library have multiple forms: the transistor is used as an example to describe: transistor is one of our commonly used components in device. In the Lib library, there are only two simple options, that is,? 3, if it is 2n3054, it may be to-66 or to-5 of the iron shell, and the cs9013, there is a TO-92A, TO-92B, and to-5, to-46, to-52, etc.
　

Another is resistance. In the device library, it also simply calls them RES1 and RES2, regardless of whether it is 100 Ω.
Or kb. For a circuit board, it is irrelevant to the Ohm number, the 1/4 W and even 1/2 W resistors selected are completely determined by the power of the resistor. They can all be encapsulated with the axial0.3 component, while the power is larger, available axial0.4, axial0.5, and so on. The common components are encapsulated as follows:

Resistance and non-polar double-ended element AXIAL0.3-AXIAL1.0
Stepless capacitance RAD0.1-RAD0.4
Polar capacitor rb.2/. 4-rb.5/1.0
Diode diode0.4 and diode0.7
Z crystal oscillator xtal1
Transistor, Fet, UJT to-xxx (to-3, to-5)
Variable Resistance (pot1, pot2) VR1-VR5
Of course, you can also open the C:/client98/Release 98/library/advpcb. Lib library to find the corresponding encapsulation of the parts used.

We recommend that you back these commonly used component packages. You can split these components into two parts, for example, resistance axial0.3 can be split into axial and 0.3, axial is translated into Chinese, and 0.3 is the distance between the Solder Pad of the Resistance on the printed circuit board, that is, Mil (because in the field of motor, it is mainly based on the imperial unit. Similarly, for non-polar capacitors, The RAD0.1-RAD0.4 is also the same; for Polarity capacitors such as electrolytic capacitors, its encapsulation is rb.2 /. 4, rb.3 /. 6. 2 "is the Pad Spacing,". 4 "is the outer diameter of the capacitor cylinder.

For a transistor, you can directly look at its shape and power. For a high-power transistor, you can use? 3. If the middle power transistor is flat, use to-220. If it is a metal shell, use to-66, a small power transistor, and use to-5, to-46, TO-92A and so on can, anyway, its pin is also long, bend also can.

For commonly used integrated IC circuits, there are dipxx, that is, dual-row direct plug-in component encapsulation, and dip8 is double-row, each row has four pins, the distance between the two rows is mil, the distance between the pad is 100mil. Sipxx is the encapsulation of a single row. And so on.

It is worth noting that the packaging of transistors and variable resistors is the most headache. the PINs may not be the same for the same packaging. For example, for packaging such as TO-92B, usually 1 foot is E (emission pole), and 2 feet may be B (base pole), or C (collector ); similarly, the three-legged device may be C or B. Specifically, only the component can be determined. Therefore, the circuit software does not dare to hard define the pad name (PIN name). Similarly, the FET and MOS tubes can be encapsulated in the same way as the transistor, which can be used in three pin components.

Q1-B, in the PCB, when loading this network table, it will not find the node (not ).

Similar problems may also occur in the Variable Resistance. In the schematic diagram, the variable resistance pins are 1, W, and 2, respectively. The resulting network tables are 1, 2, and W, in a PCB, the pad is 1, 2, 3. When there are two elements in the circuit, the fastest way to change the difference between PCB and Sch is to change the crystal tube pin to 1, 2 directly in the network table after the network table is generated, 3. Change the variable resistance to 1, 2, and 3 in the same shape as the circuit board components.