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8121S-40.000MQ33DTL

Public Made by Adom

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HCI Temperature Compensated Crystal Oscillators (TCXO), SMD2016-4P. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.

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8121S-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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 8121s-40-000mq33dtl.step / 8121s-40-000mq33dtl.glb are 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).

Datasheet PDF