參數(shù)資料
型號: P0080EBRP2
英文描述: MCU CMOS 40 LD 20MHZ 4K EPRM, 0C to +70C, 40-PDIP, TUBE
中文描述: SIDAC的| 25V的五(公報)最大| 800mA的我(縣)|對92VAR
文件頁數(shù): 130/161頁
文件大?。?/td> 986K
代理商: P0080EBRP2
PCB Layout
SIDACtor
Data Book
5 - 14
Teccor Electronics
(972) 580-7777
The minimum width and thickness of conductors on a PCB is determined primarily by
the current-carrying capacity required. This current carrying capacity is limited by the
allowable temperature rise of the etched copper conductor. An adjacent ground or
power layer can significantly reduce this temperature rise. A single ground plane can
generally raise the allowed current by 50 percent. An easy approximation can be
generated by starting with Figure 5-4 to calculate the conductor cross sectional area
required. Once this has been done, Figure 5-5 converts the cross sectional area to the
required conductor width dependent on the copper foil thickness of the trace.
Figure 5-5 Conductor Width vs. Area
Trace Separation
Because Tip and Ring traces are subjected to transient conditions, they should be
routed towards the edge of the PCB away from sensitive areas, and should maintain a
minimum separation of 2.5mm between themselves and other traces. A good rule of
thumb for separation of non-coated top layer traces is to maintain spacing equal to
.010mm per volt.
Grounding
Although often overlooked, grounding is a very important design consideration when
laying out a protection interface circuit. To optimize its effectiveness, several things
should be considered.
The first is that a large copper plane should be provided using a grid pattern for the
ground reference point.
Next, it should be decided if a single point or a multi point grounding scheme is to be
used. A single-point (also called centralized) grounding scheme is used for circuit
dimensions smaller than one-tenth of a wavelength (
λ
= 300,000/F
kHz
) and a multi
point (also called distributed) grounding scheme is used for circuit trace lengths
0
.350
.300
.250
.030
.050
.070
.100
.150
.200
.010
.020
.005
.001
0
1
10
20
100 150
300
400
500
600
700
Conductor Cross-Section Area (sq mils)
5
30 50 70
200
250
C
0
"
7
0
0
0
2
t
o
2
"
4
1
0
0
2
t
o
1
(2oz/ft2 .0028"
(3oz/ft2) .0042"
相關(guān)PDF資料
PDF描述
P0080EC SIDAC|25V V(BO) MAX|800MA I(S)|TO-92VAR
P0080ECRP1 MCU CMOS 40 LD 20MHZ 4K EPRM, -40C to +125C, 40-PDIP, TUBE
P0080ECRP2 MCU CMOS 44 LD 20MHZ 4K EPRM, -40C to +125C, 44-MQFP, TRAY
P0300EC MCU CMOS 40 LD 10MHZ 8K OTP, 0C to +70C, 40-PDIP, TUBE
P0300ECRP1 MCU CMOS 40 LD 10MHZ 8K OTP, -40C to +125C, 40-PDIP, TUBE
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