component
S1C20945ZWFAC
Public Made by Adomby adom
JYJE Crystals, HC-49S. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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
markdownS1C20945ZWFAC
JYJE · Crystals · HC-49S
S1C20945ZWFAC from JYJE, in a HC-49S. 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 | JYJE |
| Package | HC-49S |
| 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 |
|---|---|---|---|---|---|---|---|
| Equivalent series resistance (ESR), max, 3.200-3.579 MHz | ESR | 150 | ohm | Fundamental mode, 3.200-3.579 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 3.579-5.000 MHz | ESR | 120 | ohm | Fundamental mode, 3.579-5.000 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 5.000-6.000 MHz | ESR | 100 | ohm | Fundamental mode, 5.000-6.000 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 6.000-7.000 MHz | ESR | 80 | ohm | Fundamental mode, 6.000-7.000 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 7.000-10.000 MHz | ESR | 60 | ohm | Fundamental mode, 7.000-10.000 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 10.000-14.000 MHz | ESR | 50 | ohm | Fundamental mode, 10.000-14.000 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 14.000-20.000 MHz | ESR | 40 | ohm | Fundamental mode, 14.000-20.000 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 20.000-37.000 MHz | ESR | 30 | ohm | Fundamental mode, 20.000-37.000 MHz | 1 | ||
| Equivalent series resistance (ESR), max, 32.000 MHz and above | ESR | 80 | ohm | Third overtone mode, >=32.000 MHz | 1 | ||
| Aging | -3 | 3 | ppm/year | 25℃ | 1 | ||
| Shunt capacitance (C0), max | C0 | 7 | pF | 1 | |||
| Insulation resistance, min | 500 | Mohms | at DC 100V | 1 | |||
| Drive level | 10 | 50 | uW | Typical | 1 | ||
| Frequency-temperature drift (printed range ±10ppm～±50ppm; upper bound used as max) | -50 | 50 | ppm | 1 | |||
| Frequency range, fundamental | 3.2 | 37 | MHz | Fundamental mode | 1 | ||
| Frequency range, third overtone | 37 | 70 | MHz | Third overtone mode | 1 | ||
| Operating temperature range (option 1) | -20 | 70 | ℃ | 1 | |||
| Operating temperature range (option 2) | -40 | 85 | ℃ | 1 | |||
| Storage temperature range (option 1) | -20 | 60 | ℃ | 1 | |||
| Storage temperature range (option 2) | -55 | 125 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
S1C20945ZWFAC - Footprint:
Crystal:Crystal_HC49-4H_Vertical - 3D model: HC-49S (KiCad packages3D, STEP)
- 3D model files:
s1c20945zwfac-etched.step/s1c20945zwfac-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);s1c20945zwfac.step/s1c20945zwfac.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JYJE datasheet (1 pp, sha256 ``, retrieved 2026-10-16, tier: lcsc)
- Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins, primarycrystal numbering(convention), consensusoff(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).