Product Overview
The Seam3225 is a high-precision Quartz Crystal Resonator designed for demanding communication applications. It offers high frequency stability and is particularly effective in reducing EMI (Electromagnetic Interference). This resonator is an ideal choice for Bluetooth devices, wireless communication sets, DSCs, PDAs, and mobile phones. It is RoHS Compliant and Pb Free.
Product Attributes
- Brand: CHANGXING ELECTRONICS CO.,LTD.
- Product Model: Seam3225
- Series: 8D Series
- Certifications: RoHS Compliant / Pb Free
- Sealing Type: Seam Sealing
- Crystal Cutting Type: AT CUT (thickness shear mode)
- Standard Reel Quantity: 3,000 pcs per reel (WHITE)
Technical Specifications
| Parameter | Model | Units | Min. | Max. | Notes |
|---|---|---|---|---|---|
| Nominal Frequency | 25.000000 | MHz | - | - | Fund |
| Frequency Tolerance | - | ppm | -1000+5000 | - | at 25 3 |
| Load Capacitance | 8 | pF | - | - | - |
| Oscillation Mode | - | - | - | - | Fund |
| Frequency Stability | - | ppm | 30 | - | Over Operating Temp. Range |
| Aging | - | ppm/year | 3 | - | 1st Year |
| Operating Temperature | - | -40 | +85 | - | |
| Storage Temperature Range | - | -55 | +125 | - | |
| Shunt Capacitance (C0) | - | pF | - | 5 | Max. |
| Motional Capacitance (C1) | - | fF | - | - | - |
| Effective Resistance (Rr) | - | - | 40 | Max. | |
| Drive Level | - | uW | - | 100 | at DC 100V |
| Insulation Resistance | - | M | 500 | - | Min. |
| Spurious Response | - | dB | - | -3.0 | - |
| Pulling Sensitivity (TS) | - | ppm/pF | - | - | - |
| Dimensions (L x W x H) | 3.2 x 2.5 x 0.7 | mm | - | - | SMD |
| Reel Width (L1) | - | mm | 178 | 1.0 | - |
| Tape Width (W) | - | mm | 13 | 0.5 | - |
| Tape Width (W1) | - | mm | 11.5 | 0.2 | - |
| Pocket Depth (A) | - | mm | 1.40 | 0.1 | - |
| Pocket Width (B) | - | mm | 3.40 | 0.1 | - |
| Pocket Pitch (C) | - | mm | 2.70 | 0.1 | - |
| Carrier Tape Width (D) | - | mm | 4.00 | 0.1 | - |
| Carrier Tape Width (E) | - | mm | 8.0 | 0.2 | - |
| Carrier Tape Width (F) | - | mm | 4.00 | 0.11 | - |
| Carrier Tape Width (G) | - | mm | 1.55 | 0.05 | - |
| Carrier Tape Width (H) | - | mm | 1.75 | 0.1 | - |
| Product Weight | - | mg | - | 17.322 | - |
| MSL Level | - | - | - | 1 | IPC/JEDEC J-STD-033C |
| Reflow Condition | - | - | - | - | (Refer to specific profile) |
| Material Composition (Base - Ceramics) | - | % | - | - | Al2O3: 92.40%, SiO2: 4.31%, Cr2O3: 1.50%, MgO: 0.69%, CaO: 1.10% |
| Material Composition (Cover - 4J29) | - | % | - | - | (Base material) |
| Material Composition (Adhesive - Polymer) | - | % | - | - | Silicone resin: 15.00%, Undecane: 5.00%, Dodecane: 5.00% |
| Material Composition (Electrode - Metallizing) | - | % | - | - | Tungsten: 100.00% |
| Material Composition (Metallizing) | - | % | - | - | Fe: 53.45%, Ni: 29.25%, Co: 17.30% |
| Material Composition (Plating - Ni) | - | % | - | - | Ni: 100.00% |
| Material Composition (Crystal - Quartz) | - | % | - | - | SiO2: 100.00% |
| Material Composition (Soldering) | - | % | - | - | Ag: 75.00%, Cr: 5.56%, Ni: 100.00% |
Marking: CHANGXING LOGO, Nominal Frequency (MHz), Line Code, Last three digits of batch code, Year-Month Code.
Reliability Specifications: Includes Mechanical Endurance (Vibration, Mechanical Shock, Drop Test, High Temp Storage, Resistance to Soldering Heat) and Environmental Endurance (High Temp & Humidity, Low Temp Storage, Thermal Shock, Pressure Cooker Storage, Helium Bombing, Gross Leak Test, Fine Leak Test).
2509161435_CHANGXING-ELECTRONICS-8DSC250G0008L_C51902145.pdf
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