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Contents

README

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ECS-300-8-37-CKM-TR

ECS · Crystals · SMD2016-4P

ECS-300-8-37-CKM-TR from ECS, 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 In/Out passive Crystal terminal that is electrically interchangeable with pad 3; the chamfer on the bottom pad has no electrical significance.
2 Gnd power_in Ground connection for the crystal package.
3 Out/In passive Crystal terminal that is electrically interchangeable with pad 1 (datasheet states pads 1 and 3 are interchangeable).
4 Gnd power_in Ground connection for the crystal package.

Key specifications

Parameter Value
Manufacturer ECS
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
Equivalent Series Resistance (ESR) ESR 60 Ω Frequency 26.000 ~ 39.999 MHz 1
Operating Temperature Topr -20 70 °C 1
Storage Temperature Tstg -40 85 °C 1
Frequency Tolerance (decoded from code C) -10 10 ppm @ +25°C 1
Frequency Stability (decoded from code K) -10 10 ppm -20 ~ +70°C 1
Aging (First Year) -5 5 ppm @ +25°C ±3°C, first year 1
Peak Solder Temperature 260 °C 10 sec max, 2 cycles max 2
Frequency (variant) 30 MHz Part code 300 (developed frequency table) 2
Load Capacitance CL 8 pF Specify in P/N (code 8) 1
Shunt Capacitance Co 5 pF 1
Drive Level DL 100 μW 1

CAD (KiCad official)

  • Symbol: ECS-300-8-37-CKM-TR
  • Footprint: Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm
  • 3D model: SMD2016-4P (KiCad packages3D, STEP)
  • 3D model files: ecs-300-8-37-ckm-tr-etched.step / ecs-300-8-37-ckm-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ecs-300-8-37-ckm-tr.step / ecs-300-8-37-ckm-tr.glb are the bare package body.

Provenance

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

  • Datasheet: ECS datasheet (2 pp, sha256 c222213c261443e5, retrieved 2026-10-14, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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