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TX0395B

TST · Oscillators · SMD2520-4P

TX0395B from TST, 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 GND power_in Ground; the pin-out table marks it 'Ground Recommended' and the recommended circuit ties it to supply negative.
2 GND power_in Ground connection, tied to supply negative in the recommended circuit.
3 OUTPUT output Clipped sinewave output, 0.8 Vp-p min into 10pF//10KΩ load, AC-coupled with 1000~1000000pF in the recommended circuit.
4 VCC power_in Power supply input, 1.7~3.3V (referenced to 2.8V), 1.5 mA max supply current, with 10000pF bypass in the recommended circuit.

Key specifications

Parameter Value
Manufacturer TST
Package SMD2520-4P
Category Crystal Oscillator/Oscillator/Resonator
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
Nominal Frequency Fo 26 MHz 3
Power Supply Voltage Vcc 1.7 2.8 3.3 V Reference to 2.8V 3
Operating Temperature Range -40 85 °C 3
Storage Temperature Range -40 85 °C 3
Output Voltage Vout 0.8 Vp-p Load 10pF//10KΩ 3
Power Supply Current Icc 1.5 mA 3
Frequency Tolerance as received -1 1 ppm @ 25C +/- 3C 3
Frequency Tolerance after reflow -2 2 ppm @ 25C +/- 3C 3
Frequency Stability vs. Temperature (-30~85C) -0.5 0.5 ppm Reference to the middle point between minimum and maximum frequency value 3
Frequency Stability vs. Temperature (-40~-30C) -3 3 ppm 3
Frequency Stability vs. Load -0.1 0.1 ppm Load varied 10pF//10KΩ +/-5% 3
Frequency Stability vs. Supply Voltage -0.1 0.1 ppm Supply varied 2.8V +/-5% 3
Frequency slope -0.05 0.05 ppm/°C -20°C~+65°C, min one measurement every 2C 3
Frequency slope -0.1 0.1 ppm/°C -30°C~+85°C, min one measurement every 2C 3
Frequency slope -0.35 0.35 ppm/°C -40°C~-30°C, min one measurement every 2C 3
Static temperature hysteresis -0.6 0.6 ppm 3
Start Up Time 2 msec 90% of final RF level in Vp-p; within ± 0.5 ppm of final freq 4
Harmonics -8 dBc 4
Aging first year -1 1 ppm/year @25C first year 4
Aging 2nd year -1.5 1.5 ppm/year @25C 2nd year 4
Aging 5 years -2.5 2.5 ppm/year @25C 5 years 4
Aging 10 years -5 5 ppm/year @25C 10 years 4
SSB Phase Noise -50 dBc/Hz @1Hz Carrier Offset 4
SSB Phase Noise -80 dBc/Hz @10Hz Carrier Offset 4
SSB Phase Noise -105 dBc/Hz @100Hz Carrier Offset 4
SSB Phase Noise -130 dBc/Hz @1KHz Carrier Offset 4
SSB Phase Noise -148 dBc/Hz @10KHz Carrier Offset 4
SSB Phase Noise -150 dBc/Hz @100KHz Carrier Offset 4
Max peak reflow temperature 260 °C Reflow profile 7

CAD (KiCad official)

  • Symbol: TX0395B
  • Footprint: Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm
  • 3D model: SMD2520-4P (KiCad packages3D, STEP)
  • 3D model files: tx0395b-etched.step / tx0395b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tx0395b.step / tx0395b.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: TST datasheet (8 pp, sha256 8be8f7b9e725f740, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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