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ECS-TXO-2520-33-400-AN-TR

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ECS Temperature Compensated Crystal Oscillators (TCXOs), SMD2520-4P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ECS-TXO-2520-33-400-AN-TR

ECS · Temperature Compensated Crystal Oscillators (TCXOs) · SMD2520-4P

ECS-TXO-2520-33-400-AN-TR from ECS, 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 Tri-state input Tri-state control: High or NC gives active output, Low disables the output to Hi-Z.
2 GND power_in Ground connection.
3 Output output HCMOS clock output, rated for 15 pF load, going Hi-Z when pin 1 is low.
4 Vdd power_in Supply voltage, specified in the part number as +2.5 V, +2.8 V or +3.3 V ±10%.

Key specifications

Parameter Value
Manufacturer ECS
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
Frequency Tolerance at +25°C -2 2 ppm Tolerance at +25°C 1
Frequency Stability vs. Temperature -2.5 2.5 ppm -40 ~ +85°C 1
Frequency Stability vs. Voltage Change -0.2 0.2 ppm Vdd ±5% 1
Frequency Stability vs. Load Change -0.2 0.2 ppm ±10% 1
Aging -1 1 ppm Per year @ +25°C 1
Supply Voltage Vdd 3.3 V DC +3.3 ±10% 1
Standby Current 10 µA 1
Current Consumption 6 mA +3.3V, 30.1~40 MHz 1
Rise & Fall time 5 ns 10%Vdd, 90%Vdd 1
Duty Cycle 45 55 % @ ½ Vdd 1
Phase Noise -145 dBc/Hz @ 10 KHz offset 1
Output Load 15 pF HCMOS 1
Output Frequency 40 MHz Code 400 2
Frequency Range 3.2 55 MHz 1
Operating Temperature -40 85 °C Temp code N 1
Peak solder temperature 260 °C 10 sec max, 2 cycles max 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 FREQUENCY ABBREVIATIONS 2

CAD (KiCad official)

  • Symbol: ECS-TXO-2520-33-400-AN-TR
  • Footprint: Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm
  • 3D model: SMD2520-4P (KiCad packages3D, STEP)
  • 3D model files: ecs-txo-2520-33-400-an-tr-etched.step / ecs-txo-2520-33-400-an-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ecs-txo-2520-33-400-an-tr.step / ecs-txo-2520-33-400-an-tr.glb are the bare package body.

Provenance

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

  • Datasheet: ECS datasheet (2 pp, sha256 ff95b59ff8d90046, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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