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ECS-120-8-36-CKM-TR
Public Made by Adomby adom
ECS Crystals, SMD2520-4P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownECS-120-8-36-CKM-TR
ECS · Crystals · SMD2520-4P
ECS-120-8-36-CKM-TR from ECS, 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); the crystal is symmetrical and pads 1 and 3 are interchangeable. |
| 2 | Gnd | power_in | Ground pad (Gnd) for the crystal package; the datasheet gives no electrical limits for this pad. |
| 3 | Out/In | passive | Crystal terminal (Out/In); the crystal is symmetrical and pads 1 and 3 are interchangeable. |
| 4 | Gnd | power_in | Ground pad (Gnd) for the crystal package; the datasheet gives no electrical limits for this pad. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD2520-4P |
| 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 (P/N code C) | -10 | 10 | ppm | @ +25°C; P/N tolerance letter C = ±10 ppm (family default printed as ±50 ppm) | 1 | ||
| Frequency stability (P/N code K) | -10 | 10 | ppm | -20 ~ +70°C; P/N stability letter K = ±10 ppm (family default printed as ±50 ppm) | 1 | ||
| Aging (first year) | -5 | 5 | ppm | @ +25°C ±3°C | 1 | ||
| Operating temperature | Topr | -20 | 70 | °C | P/N temperature code M = -20 ~ +70°C | 1 | |
| Storage temperature | Tstg | -55 | 125 | °C | 1 | ||
| ESR | 150 | Ω | 12.000 ~ 15.999 MHz | 1 | |||
| Frequency | 12 | MHz | P/N frequency code 120 = 12.000 MHz | 1 | |||
| Load capacitance | 8 | pF | Specify in P/N; P/N code 8 = 8 pF | 1 | |||
| Shunt capacitance | Co | 5 | pF | 1 | |||
| Drive level | DL | 100 | μW | 1 | |||
| Peak solder temperature | 260 | °C | 10 sec max; 2 cycles max; MSL 1 | 2 |
CAD (KiCad official)
- Symbol:
ECS-120-8-36-CKM-TR - Footprint:
Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm - 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files:
ecs-120-8-36-ckm-tr-etched.step/ecs-120-8-36-ckm-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ecs-120-8-36-ckm-tr.step/ecs-120-8-36-ckm-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ECS datasheet (2 pp, sha256
dfda265f7b2eeae3, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).