from jitx.anchor import Anchor
from jitx.component import Component
from jitx.container import inline
from jitx.feature import Courtyard, Custom, Silkscreen, Soldermask, Paste
from jitx.landpattern import Landpattern, Pad, PadMapping
from jitx.net import Port
from jitx.shapes.composites import rectangle
from jitx.shapes.primitive import Arc, ArcPolyline, Circle, Polygon, Polyline, Text
from jitx.symbol import Direction, Pin, Symbol, SymbolMapping
[docs]
class RectangleSMDPad(Pad):
shape = rectangle(0.4, 0.7)
soldermask = Soldermask(rectangle(0.502, 0.802))
paste = Paste(rectangle(0.502, 0.802))
[docs]
class NTA4151PT1G(Component):
"""
NTA4151PT1G P-Channel MOSFET
20V 760mA 360mΩ@4.5V,350mA 301mW P Channel MOSFET
Manufacturer: ON Semiconductor
"""
name = "C54876"
description = "20V 760mA 360mΩ@4.5V,350mA 301mW P Channel - MOSFETs ROHS"
manufacturer = "ON Semiconductor"
mpn = "NTA4151PT1G"
datasheet = (
"https://datasheet.lcsc.com/lcsc/1809212222_onsemi-NTA4151PT1G_C54876.pdf"
)
reference_designator_prefix = "Q"
# MOSFET pins
D = Port() # Drain
G = Port() # Gate
S = Port() # Source
@inline
class landpattern(Landpattern):
# Pads
p = {
1: RectangleSMDPad().at(0.6, -0.509, rotate=90),
2: RectangleSMDPad().at(0.6, 0.507, rotate=90),
3: RectangleSMDPad().at(-0.6, 0, rotate=90),
}
# Labels
labels = [
Silkscreen(Text(">REF", 0.5, Anchor.W).at(-0.75, 2.683)),
Custom(Text(">VALUE", 0.5, Anchor.W).at(-0.75, 1.683), name="Fab"),
]
# Silkscreen
silkscreen = [
Silkscreen(Polyline(0.254, [(-0.4, 0.85), (-0.4, 0.427)])),
Silkscreen(Polyline(0.254, [(-0.4, -0.428), (-0.4, -0.85)])),
Silkscreen(Polyline(0.254, [(-0.4, 0.85), (0.068, 0.85)])),
Silkscreen(Polyline(0.254, [(-0.4, -0.85), (0.068, -0.85)])),
Silkscreen(Polyline(0.254, [(0.4, 0.076), (0.4, -0.077)])),
]
# Fab drawing
fab_drawing = [
Custom(ArcPolyline(0.06, [Arc((0.8, -0.801), 0.03, 0, -360)]), name="Fab"),
Custom(ArcPolyline(0.1, [Arc((1.025, -0.5), 0.05, 0, -360)]), name="Fab"),
]
# Courtyard
courtyard = Courtyard(rectangle(1.702, 1.954))
@inline
class symbol(Symbol):
pin_name_size = 0.7
pad_name_size = 0.7
# Pin definitions
D = Pin((2, 4), 2, Direction.Up)
G = Pin((-4, -2), 2, Direction.Left)
S = Pin((2, -2), 2, Direction.Down)
# Text elements
value = Text(">VALUE", 0.7056, Anchor.C).at(0, 4.89)
reference = Text(">REF", 0.7056, Anchor.C).at(0, 5.67)
# Symbol artwork - MOSFET symbol
art = [
# Connection circles
Circle(radius=0.1).at(-4, -2),
Circle(radius=0.1).at(2, -2),
Circle(radius=0.1).at(2, 0),
Circle(radius=0.1).at(2, 4),
Circle(radius=0.1).at(2, 0.6),
# Drain connections
Polyline(0.2, [(2, 0), (4, 0), (4, 1.6)]),
Polyline(0.2, [(2, 3.4), (2, 4), (4, 4), (4, 2.6)]),
# Channel structure
Polyline(0.2, [(2, 3.4), (0, 3.4)]),
Polyline(0.2, [(0, 2), (2, 2), (2, 0)]),
Polyline(0.2, [(2, 0.6), (0, 0.6)]),
# Gate structure
Polyline(0.2, [(-0.4, 3.8), (-0.4, 0.2)]),
Polyline(0.2, [(0, 3), (0, 3.8)]),
Polyline(0.2, [(0, 1.6), (0, 2.4)]),
Polyline(0.2, [(0, 0.2), (0, 1)]),
# Gate connection
Polyline(0.2, [(-2, 2), (-0.4, 2)]),
# Body diode
Polyline(0.2, [(-0.8, -2.6), (-0.8, -1.4), (0, -2), (-0.8, -2.6)]),
Polyline(0.2, [(-2.2, -2.8), (-2.2, -1.2)]),
Polyline(0.2, [(-2.2, -2), (-1.4, -2.6), (-1.4, -1.4), (-2.2, -2)]),
# Source connection
Polyline(0.2, [(2, -2), (-4, -2)]),
Polyline(0.2, [(2, -2), (2, 0)]),
# Gate resistor symbol
Polyline(
0.2,
[
(-2, 2),
(-2.2, 2.4),
(-2.4, 1.6),
(-2.8, 2.4),
(-3, 1.6),
(-3.4, 2.4),
(-3.6, 1.6),
(-3.8, 2),
(-4, 2),
(-4, -2),
],
),
# Additional symbol details
Polyline(0.2, [(-1.8, -3.2), (-2.2, -2.8)]),
Polyline(0.2, [(-2.2, -1.2), (-2.6, -0.8)]),
Polyline(0.2, [(0, -2.8), (0, -1.2)]),
Polyline(0.2, [(0.4, -3.2), (0, -2.8)]),
Polyline(0.2, [(0, -1.2), (-0.4, -0.8)]),
# Arrows/triangles
Polygon([(2, 2), (0.8, 2.4), (0.8, 1.6)]),
Polygon([(4, 1.6), (4.6, 2.6), (3.4, 2.6)]),
]
# Pin mapping
padmapping = PadMapping(
{
G: landpattern.p[1], # Gate
S: landpattern.p[2], # Source
D: landpattern.p[3], # Drain
}
)
# Symbol mapping
symbolmapping = SymbolMapping(
{
D: symbol.D,
G: symbol.G,
S: symbol.S,
}
)
