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1XXA26000MEA
Public Made by Adomby adom
KDS Daishinku Temperature Compensated Crystal Oscillators (TCXO), SMD2520-4P. Pinout cross-checked by two models 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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Contents
README
markdown1XXA26000MEA
KDS Daishinku · Temperature Compensated Crystal Oscillators (TCXO) · SMD2520-4P
1XXA26000MEA from KDS Daishinku, 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 | VCONT | input | Frequency control voltage input with a range of +0.3 V to +2.0 V (typ. +1.15 V), and an input resistance of at least 100 kΩ; the frequency increases with control voltage (positive slope). |
| 2 | GND | power_in | Ground terminal; the datasheet gives no separate electrical limit for this pin. |
| 3 | Output | output | DC-coupled clipped sine wave output with a level of at least 0.8 Vp-p, measured into a 10 kΩ // 10 pF load. |
| 4 | VCC | power_in | Supply voltage input, recommended at +2.185 V to +2.415 V (typ. +2.3 V), with an absolute maximum rating of -0.3 V to +4.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KDS Daishinku |
| Package | SMD2520-4P |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 2.185 | 2.3 | 2.415 | V | 2 | |
| Load Impedance (resistance part) | LOAD_R | 9 | 10 | 11 | kΩ | 2 | |
| Load Impedance (parallel capacitance) | LOAD_C | 9 | 10 | 11 | pF | 2 | |
| Control Voltage Range | VCONT | 0.3 | 1.15 | 2 | V | 2 | |
| Operating Temperature Range | T_OPR | -40 | 85 | °C | 2 | ||
| Supply Voltage | VCC | -0.3 | 4.6 | V | 2 | ||
| Storage Temperature Range | T_STG | -40 | 85 | °C | 2 | ||
| Current Consumption | 1.5 | mA | 3 | ||||
| Output Level | 0.8 | VP-P | Note 1: clipped sine wave (DC-coupled) | 3 | |||
| Symmetry | 40 | 60 | % | GND level (DC cut) | 3 | ||
| 2nd harmonics | -8 | dBc | 52MHz | 3 | |||
| 3rd harmonics | -10 | dBc | 78MHz | 3 | |||
| 4th harmonics | -20 | dBc | 104MHz | 3 | |||
| Frequency Stability - Tolerance | -2 | 2 | ppm | After 2 times reflow; ref. to nominal frequency; TA=+25°C (note 2) | 3 | ||
| Frequency Stability - vs Temperature | -0.5 | 0.5 | ppm | TA=-30~+85°C; VCONT=+1.15V; ref. to frequency (TA=+25°C) | 3 | ||
| Frequency Stability - vs Temperature | -3 | 3 | ppm | TA=-40~-30°C; VCONT=+1.15V; ref. to frequency (TA=+25°C) | 3 | ||
| Frequency Stability - vs Slope | -0.05 | 0.05 | ppm/°C | TA=-20~+65°C | 3 | ||
| Frequency Stability - vs Slope | -0.1 | 0.1 | ppm/°C | TA=-30~+85°C | 3 | ||
| Frequency Stability - vs Slope | -0.35 | 0.35 | ppm/°C | TA=-40~-30°C | 3 | ||
| Frequency Stability - vs Drift Rate/Slope | -10 | 10 | ppb/s | @0.3°C/s | 3 | ||
| Frequency Stability - vs Hysteresis | -0.6 | 0.6 | ppm | 3 | |||
| Frequency Stability - vs Supply Voltage | VCC | -0.1 | 0.1 | ppm | VCC=+2.3V±5% | 3 | |
| Frequency Stability - vs Load Variation | -0.1 | 0.1 | ppm | LOAD_R//C=(10kΩ//10pF)±10% | 3 | ||
| Frequency Stability - vs Aging | -1 | 1 | ppm/year | TA=Room ambient | 3 | ||
| Frequency Stability - vs Aging | -1.5 | 1.5 | ppm/2years | TA=Room ambient | 3 | ||
| Frequency Stability - vs Aging | -2.5 | 2.5 | ppm/5years | TA=Room ambient | 3 | ||
| Frequency Stability - vs Aging | -5 | 5 | ppm/10years | TA=Room ambient | 3 | ||
| Start Up Time | 2 | ms | @90% of final Vout level | 3 | |||
| G Sensitivity | 2 | ppb/G | within 30 to 1500Hz | 3 | |||
| Frequency Control - Control Range | 9 | 15 | ppm | VCONT=+1.15V±0.85V; positive slope (note 4) | 3 | ||
| Frequency Control - Input Resistance | 100 | kΩ | 3 | ||||
| SSB Phase Noise | -50 | dBc/Hz | Relative to f0 level, offset 1Hz; TA=-40~+85°C (note 5) | 3 | |||
| SSB Phase Noise | -73 | dBc/Hz | Relative to f0 level, offset 5Hz | 3 | |||
| SSB Phase Noise | -80 | dBc/Hz | Relative to f0 level, offset 10Hz | 3 | |||
| SSB Phase Noise | -114 | dBc/Hz | Relative to f0 level, offset 100Hz | 3 | |||
| SSB Phase Noise | -136 | dBc/Hz | Relative to f0 level, offset 1kHz | 3 | |||
| SSB Phase Noise | -148 | dBc/Hz | Relative to f0 level, offset 10kHz | 3 | |||
| SSB Phase Noise | -152 | dBc/Hz | Relative to f0 level, offset 100kHz | 3 | |||
| Root Allan Variance | 0.3 | ppb | Tau=1sec | 3 | |||
| Nominal Frequency | 26 | MHz | 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 |
|---|---|---|---|---|
| housing | PET | Cover Tape : PET + Olefin Resin (Conductivity) | 9 | |
| contacts | silver | Leads, such as solder, are not used for this product. (Lead Free) 17.6 About the existence of silver and mercury use | 14 |
CAD (KiCad official)
- Symbol:
1XXA26000MEA - Footprint:
Crystal:Crystal_SMD_2520-4Pin_2.5x2.0mm - 3D model: SMD2520-4P (KiCad packages3D, STEP)
- 3D model files:
1xxa26000mea-etched.step/1xxa26000mea-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1xxa26000mea.step/1xxa26000mea.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KDS Daishinku datasheet (15 pp, sha256
15943c3e70f369c8, retrieved 2026-10-16, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).