component
ECS-120-10-33B-CKM-TR
Public Made by Adomby adom
ECS Crystals, SMD3225-4P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ECS-120-10-33B-CKM-TR
ECS · Crystals · SMD3225-4P
ECS-120-10-33B-CKM-TR from ECS, in a SMD3225-4P. 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 labeled In/Out; pads 1 and 3 are interchangeable because the crystal is symmetrical, so either may serve as the crystal input or output. |
| 2 | Gnd | power_in | Ground pad connected to the crystal case; the datasheet lists it only as Gnd and gives no further electrical limits. |
| 3 | Out/In | passive | Crystal terminal labeled Out/In; pads 1 and 3 are interchangeable because the crystal is symmetrical, so either may serve as the crystal output or input. |
| 4 | Gnd | power_in | Ground pad connected to the crystal case; the datasheet lists it only as Gnd and gives no further electrical limits. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD3225-4P |
| 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 (code C, @ +25°C) | -10 | 10 | ppm | @ +25°C | 1 | ||
| Frequency Stability (code K, M temp range) | -10 | 10 | ppm | Stability code K per P/N guide; temp range code M (-20 ~ +70°C); † contact ECS for availability | 1 | ||
| Aging (First Year) | -1 | 1 | ppm | @ +25°C ±3°C, first year | 1 | ||
| ESR (Equivalent Series Resistance), max | ESR | 100 | Ω | Frequency 10.000 ~ 15.999 MHz (this part: 12.000 MHz) | 1 | ||
| Shunt Capacitance | Co | 3 | pF | 1 | |||
| Drive Level | DL | 200 | μW | 1 | |||
| Operating Temperature (temp range code M) | Topr | -20 | 70 | °C | P/N temperature code M = -20 ~ +70°C | 1 | |
| Storage Temperature | Tstg | -40 | 125 | °C | 1 | ||
| Peak Solder Temperature | 260 | °C | 10 sec max; 2 cycles max | 2 | |||
| Nominal Frequency | 12 | MHz | P/N frequency code 120 = 12.000 MHz | 2 |
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-120-10-33B-CKM-TR - Footprint:
Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm - 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files:
ecs-120-10-33b-ckm-tr-etched.step/ecs-120-10-33b-ckm-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ecs-120-10-33b-ckm-tr.step/ecs-120-10-33b-ckm-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ECS datasheet (2 pp, sha256
57501bd817a35b83, retrieved 2026-10-16, 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).
# ECS-120-10-33B-CKM-TR
**ECS** · Crystals · SMD3225-4P
ECS-120-10-33B-CKM-TR from ECS, in a SMD3225-4P. 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 labeled In/Out; pads 1 and 3 are interchangeable because the crystal is symmetrical, so either may serve as the crystal input or output. |
| 2 | Gnd | power_in | Ground pad connected to the crystal case; the datasheet lists it only as Gnd and gives no further electrical limits. |
| 3 | Out/In | passive | Crystal terminal labeled Out/In; pads 1 and 3 are interchangeable because the crystal is symmetrical, so either may serve as the crystal output or input. |
| 4 | Gnd | power_in | Ground pad connected to the crystal case; the datasheet lists it only as Gnd and gives no further electrical limits. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ECS |
| Package | SMD3225-4P |
| 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 (code C, @ +25°C) | | -10 | | 10 | ppm | @ +25°C | 1 |
| Frequency Stability (code K, M temp range) | | -10 | | 10 | ppm | Stability code K per P/N guide; temp range code M (-20 ~ +70°C); † contact ECS for availability | 1 |
| Aging (First Year) | | -1 | | 1 | ppm | @ +25°C ±3°C, first year | 1 |
| ESR (Equivalent Series Resistance), max | ESR | | | 100 | Ω | Frequency 10.000 ~ 15.999 MHz (this part: 12.000 MHz) | 1 |
| Shunt Capacitance | Co | | | 3 | pF | | 1 |
| Drive Level | DL | | | 200 | μW | | 1 |
| Operating Temperature (temp range code M) | Topr | -20 | | 70 | °C | P/N temperature code M = -20 ~ +70°C | 1 |
| Storage Temperature | Tstg | -40 | | 125 | °C | | 1 |
| Peak Solder Temperature | | | | 260 | °C | 10 sec max; 2 cycles max | 2 |
| Nominal Frequency | | | 12 | | MHz | P/N frequency code 120 = 12.000 MHz | 2 |
## 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-120-10-33B-CKM-TR`
- Footprint: `Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm`
- 3D model: SMD3225-4P (KiCad packages3D, STEP)
- 3D model files: `ecs-120-10-33b-ckm-tr-etched.step` / `ecs-120-10-33b-ckm-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecs-120-10-33b-ckm-tr.step` / `ecs-120-10-33b-ckm-tr.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ECS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8575025610617917440) (2 pp, sha256 `57501bd817a35b83`, retrieved 2026-10-16, 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](docs/ecs-120-10-33b-ckm-tr-datasheet.pdf)