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ECS-40-20-5PXDU-TR

Public Made by Adom

by adom

ECS Crystals, HC-49S-SMD. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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ECS-40-20-5PXDU-TR

ECS · Crystals · HC-49S-SMD

ECS-40-20-5PXDU-TR from ECS, in a HC-49S-SMD. 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 1 passive Terminal 1 of a two-terminal crystal; either orientation.
2 2 passive Terminal 2 of a two-terminal crystal; either orientation.

Key specifications

Parameter Value
Manufacturer ECS
Package HC-49S-SMD
Category Crystals, Oscillators, Resonators
Pins 2

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 @ +25°C -30 30 ppm @ +25°C 1
Frequency Stability -100 100 ppm -55 ~ +125°C 1
Aging (First Year) -5 5 ppm @ +25°C ±3°C 1
Frequency 3.57 70 MHz Series frequency range; this MPN's exact frequency code not decoded (see review_required) 1
Shunt Capacitance Co 7 pF 1
Drive Level DL 500 μW 1
Load Capacitance 20 pF Load capacitance option 20 (20 pF) from P/N suffix 1
Operating Temperature Topr -55 125 °C 1
Storage Temperature Tstg -55 125 °C 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin MSL 1, Lead Finish Sn/Cu Matte POCKET TAPE DIMENSIONS (mm) 2

CAD (KiCad official)

  • Symbol: ECS-40-20-5PXDU-TR
  • Footprint: Crystal:Crystal_SMD_HC49-SD
  • 3D model: HC-49S-SMD (KiCad packages3D, STEP)
  • 3D model files: ecs-40-20-5pxdu-tr-etched.step / ecs-40-20-5pxdu-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ecs-40-20-5pxdu-tr.step / ecs-40-20-5pxdu-tr.glb are the bare package body.

Provenance

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

  • Datasheet: ECS datasheet (2 pp, sha256 ``, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary crystal numbering (convention), consensus off (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