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Contents

README

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CAT10-203J4LF

BOURNS · Resistor Networks, Arrays · 0402x4

CAT10-203J4LF from BOURNS, in a 0402x4. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 R1_A passive One terminal of isolated resistor 1, whose other terminal is pin 8; 4 isolated resistors, 0.0625 W per resistor at 70 °C.
2 R2_A passive One terminal of isolated resistor 2, whose other terminal is pin 7; 0.0625 W per resistor at 70 °C.
3 R3_A passive One terminal of isolated resistor 3, whose other terminal is pin 6; 0.0625 W per resistor at 70 °C.
4 R4_A passive One terminal of isolated resistor 4, whose other terminal is pin 5; 0.0625 W per resistor at 70 °C.
5 R4_B passive Other terminal of isolated resistor 4, whose first terminal is pin 4; max working voltage 25 V.
6 R3_B passive Other terminal of isolated resistor 3, whose first terminal is pin 3; max working voltage 25 V.
7 R2_B passive Other terminal of isolated resistor 2, whose first terminal is pin 2; max working voltage 25 V.
8 R1_B passive Other terminal of isolated resistor 1, whose first terminal is pin 1; max working voltage 25 V.

Key specifications

Parameter Value
Manufacturer BOURNS
Package 0402x4
Category Resistors
Pins 8

Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Resistance 20 kΩ nominal, catalog attribute (LCSC C148502) catalog
Tolerance -5 5 % catalog attribute (LCSC C148502) catalog
Rated power 62.5 mW catalog attribute (LCSC C148502) catalog
Temperature coefficient TCR -250 250 ppm/°C catalog description (LCSC C148502) catalog

CAD (KiCad official)

  • Symbol: CAT10-203J4LF
  • Footprint: Resistor_SMD:R_Array_Convex_4x0402
  • 3D model: 0402x4 (KiCad packages3D, STEP)
  • 3D model files: cat10-203j4lf-etched.step / cat10-203j4lf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cat10-203j4lf.step / cat10-203j4lf.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: BOURNS datasheet (2 pp, sha256 d58ea7e6f915b8fc, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF