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Contents

README

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CN4048M00012T8188021

JWT · Crystals · SMD2016-4P

CN4048M00012T8188021 from JWT, in a SMD2016-4P. 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 XTAL1 passive Crystal terminal 1 of the 48.000MHz AT-cut resonator, CL 12pF, drive level 1 to 100uW (10uW typical).
2 GND power_in Ground pad, marked GND in the crystal-connection drawing and tied to the lid.
3 XTAL2 passive Crystal terminal 2 of the 48.000MHz AT-cut resonator, CL 12pF, resonance resistance 30 ohm max.
4 GND power_in Ground pad, marked GND in the crystal-connection drawing and tied to the lid.

Key specifications

Parameter Value
Manufacturer JWT
Package SMD2016-4P
Category Crystals, Oscillators, Resonators
Pins 4

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Frequency tolerance (at 25±2℃) FL -10 10 ppm 25±2℃ 4
Temperature frequency deviation TC -20 20 ppm 基准温度:25℃ 4
Aging rate -3 3 ppm 1st year max 4
Motional (series) resistance RR 30 Ω 4
Shunt capacitance C0 3 pF 4
Insulation resistance IR 500 MΩ at DC 100V 4
Spurious attenuation SPDB -3 dB -1000ppm~6500ppm 4
Excitation power (drive level) DL 1 10 100 uW 4
Operating temperature -40 85 ℃ 4
Storage temperature range -55 125 ℃ 4
Nominal frequency F0 48 MHz 4
Load capacitance CL 12 pF 4

CAD (KiCad official)

  • Symbol: CN4048M00012T8188021
  • Footprint: Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm
  • 3D model: SMD2016-4P (KiCad packages3D, STEP)
  • 3D model files: cn4048m00012t8188021-etched.step / cn4048m00012t8188021-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cn4048m00012t8188021.step / cn4048m00012t8188021.glb are the bare package body.

Provenance

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

  • Datasheet: JWT datasheet (10 pp, sha256 538941970464542c, retrieved 2026-10-16, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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