component
8121S-40.000MQ33DTL
Public Made by Adomby adom
HCI Temperature Compensated Crystal Oscillators (TCXO), SMD2016-4P. Pinout reviewed by a person 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
markdown8121S-40.000MQ33DTL
HCI · Temperature Compensated Crystal Oscillators (TCXO) · SMD2016-4P
8121S-40.000MQ33DTL from HCI, 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 | GND/NC | passive | Ground or N.C. per the pad function table; the datasheet gives no further limits. |
| 2 | GND | power_in | Ground pin; the metal lid is connected to ground pin 2. |
| 3 | RF | output | Clipped sine wave RF output, 0.8Vp-p minimum into a 10kΩ/10pF load. |
| 4 | Vcc | power_in | Supply voltage pin for 1.8V, 2.5V, 2.8V, 3.0V or 3.3V versions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HCI |
| 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 |
|---|---|---|---|---|---|---|---|
| Frequency range | 10 | 52 | MHz | 1 | |||
| Frequency tolerance (initial) | -1 | 1 | ppm | Initial tol. @+25°C | 1 | ||
| Aging per year | -1 | 1 | ppm | per year @+25°C | 1 | ||
| Output voltage level | 0.8 | Vp-p | 1 | ||||
| Phase jitter RMS | 1 | ps | 12kHz≤Fj≤20MHz | 1 | |||
| Supply current | 1.5 | mA | @10kΩ/10pF | 1 | |||
| Supply current (higher value) | 2 | mA | @10kΩ/10pF (higher value >26MHz) | 1 |
CAD (KiCad official)
- Symbol:
8121S-40.000MQ33DTL - Footprint:
Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm - 3D model: SMD2016-4P (KiCad packages3D, STEP)
- 3D model files:
8121s-40-000mq33dtl-etched.step/8121s-40-000mq33dtl-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);8121s-40-000mq33dtl.step/8121s-40-000mq33dtl.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HCI datasheet (1 pp, sha256
f15e57437578c64d, retrieved 2026-10-21, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).