typeCAD Passives

This is a typeCAD package that includes simple access to many passive components.

Resistors, capacitors, LEDs, diodes, fuses, and inductors

This package uses an options interface. All options are optional. They can also be accessed and modified later in code.

Component Options and Usage

Resistor

• Options: reference, value, wattage, datasheet, description, voltage, mpn, simulation, uuid, pcb
• Usage Example:

  let resistor = new Resistor({ reference: "R1", value: "4.7 kOhm", wattage: "0.25 W", datasheet: "link/to/datasheet", description: "High precision resistor", voltage: "100 V", mpn: "123456", simulation: "simulation/model", uuid: "unique-id", pcb: "pcb/layout" });

Capacitor

• Options: reference, value, voltage, datasheet, description, mpn, simulation, uuid, pcb
• Usage Example:

  let capacitor = new Capacitor({ reference: "C1", value: "100 nF", voltage: "6 V", datasheet: "link/to/datasheet", description: "High voltage capacitor", mpn: "123456", simulation: "simulation/model", uuid: "unique-id", pcb: "pcb/layout" });

Diode

• Options: reference, datasheet, description, voltage, mpn, simulation, uuid, pcb
• Usage Example:

  let diode = new Diode({ reference: "D1", datasheet: "link/to/datasheet", description: "High efficiency diode", voltage: "100 V", mpn: "123456", simulation: "simulation/model", uuid: "unique-id", pcb: "pcb/layout" });

Inductor

• Options: reference, value, datasheet, description, mpn, simulation, uuid, pcb
• Usage Example:

  let inductor = new Inductor({ reference: "L1", value: "2.2 uH", datasheet: "link/to/datasheet", description: "High inductance inductor", mpn: "123456", simulation: "simulation/model", uuid: "unique-id", pcb: "pcb/layout" });

Fuse

• Options: reference, datasheet, description, voltage, mpn, simulation, uuid, pcb
• Usage Example:

  let fuse = new Fuse({ reference: "F1", datasheet: "link/to/datasheet", description: "High current fuse", voltage: "100 V", mpn: "123456", simulation: "simulation/model", uuid: "unique-id", pcb: "pcb/layout" });

LED

• Options: reference, datasheet, description, voltage, mpn, simulation, uuid, pcb
• Usage Example:

  let led = new LED({ reference: "D2", datasheet: "link/to/datasheet", description: "High brightness LED", voltage: "100 V", mpn: "123456", simulation: "simulation/model", uuid: "unique-id", pcb: "pcb/layout" });

Example Usage

import { PCB } from '@typecad/typecad'
import { Resistor, LED, Capacitor, Diode, Inductor, Fuse } from '@typecad/passives/0805'
import { LED as LED0603 } from '@typecad/passives/0603'

let typecad = new PCB('passives');

let resistor = new Resistor({ value: "4.7 kOhm" });
let capacitor = new Capacitor({ value: "100 nF", voltage: "6 V" });
let diode = new Diode();
let inductor = new Inductor({ value: "2.2 uH" });
let fuse = new Fuse();
let led0805 = new LED();
let led0603 = new LED0603();     // a 0603 LED instead of 0805

typecad.create(resistor, led0805, led0603, capacitor, inductor, diode, fuse);

All of the sizes are:

• @typecad/passives/1210
• @typecad/passives/1206
• @typecad/passives/0805
• @typecad/passives/0603
• @typecad/passives/0402 no fuses
• @typecad/passives/0201 no fuses

Auto designation

If { reference } is not included, the component will be auto-numbered. If there are any name collisions, the new name will be suffixed with a _1, ie R1_1.

Connectors

Connectors can be created similarly.

import { Connector } from '@typecad/passives/connector'

// create a 10-pin connector using the JST footprint passed in the last parameter
let j1 = new Connector({ number: 10, footprint:"Connector_JST:JST_SH_SM10B-SRSS-TB_1x10-1MP_P1.00mm_Horizontal" });
// create a 5-pin connector using a default 2.54 mm pin-header
let j2 = new Connector({ number: 5 });

Testpoints

Testpoints can be created:

import { Testpoint } from '@typecad/passives/testpoint';
let tp = new Testpoint();

Will create a testpoint with a default footprint of TestPoint:TestPoint_Pad_D1.0mm.

Specific footprints can be chosen:

let tp = new Testpoint({ footprint: 'TestPoint:TestPoint_Keystone_5015_Micro_Mini'});

Connect a testpoint using tp.pin(1) in the ::net() method.

Mounting Holes

Mounting holes can be created:

import { MountingHole } from '@typecad/passives/mounting_hole';

// M2 mounting hole (default)
let mh1 = new MountingHole();

// M3 mounting hole
let mh2 = new MountingHole({ size: 'M3' });

Available sizes: M2 (default), M2.5, M3, M4, M5, M6, M8.

A custom footprint can also be provided:

let mh3 = new MountingHole({ footprint: 'MountingHole:MountingHole_3.2mm_M3_Pad' });

Net Ties

Net ties connect two or more nets together:

import { Tie } from '@typecad/passives/tie';

// 2-pin tie
let tie1 = new Tie({ schematic, net1: pinA, net2: pinB });

// 3-pin tie
let tie2 = new Tie({ schematic, net1: pinA, net2: pinB, net3: pinC });

// 4-pin tie
let tie3 = new Tie({ schematic, net1: pinA, net2: pinB, net3: pinC, net4: pinD });