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ECS-120-8-36-CKM-TR3

ECS INC INTERNATIONAL · Global Sourcing Parts · SMD2520-4P

ECS-120-8-36-CKM-TR3 from ECS INC INTERNATIONAL, in a SMD2520-4P. 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 In/Out passive Crystal terminal (In/Out); pads 1 and 3 are interchangeable because the crystal is symmetrical.
2 Gnd power_in Ground pad, connected to ground.
3 Out/In passive Crystal terminal (Out/In); pads 1 and 3 are interchangeable because the crystal is symmetrical.
4 Gnd power_in Ground pad, connected to ground.

Key specifications

Parameter Value
Manufacturer ECS INC INTERNATIONAL
Package SMD2520-4P
Category Global Sourcing Parts
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 -10 10 ppm @ +25°C; option C 1
Frequency Stability -10 10 ppm -20 ~ +70°C; option K 1
Equivalent Series Resistance ESR 150 Ω 12.000 ~ 15.999 MHz 1
Aging (First Year) -5 5 ppm @ +25°C ±3°C 1
Shunt Capacitance Co 5 pF 1
Drive Level DL 100 μW 1
Operating Temperature Topr -20 70 °C option M 1
Storage Temperature Tstg -55 125 °C 1
Peak Solder Temperature 260 °C 10 sec Max., 2 Cycles Max. 2
Frequency 12 MHz Fundamental mode; 120 = 12.000 MHz 1
Load Capacitance CL 8 pF Specify in P/N; 8 = 8 pF 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 gold MSL 1, Lead Finish Au POCKET TAPE DIMENSIONS (mm) 2

CAD (KiCad official)

  • Symbol: ECS-120-8-36-CKM-TR3
  • Footprint: Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm
  • 3D model: SMD2520-4P (KiCad packages3D, STEP)
  • 3D model files: ecs-120-8-36-ckm-tr3-etched.step / ecs-120-8-36-ckm-tr3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ecs-120-8-36-ckm-tr3.step / ecs-120-8-36-ckm-tr3.glb are the bare package body.

Provenance

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

  • Datasheet: ECS INC INTERNATIONAL datasheet (2 pp, sha256 dfda265f7b2eeae3, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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