Product Overview
The Seam3225 is a high-precision Quartz Crystal Resonator designed for demanding applications. It offers high frequency stability and is particularly effective in reducing EMI effects, making it an ideal choice for Bluetooth devices, wireless communication sets, DSCs, PDAs, and mobile phones. This RoHS Compliant and Pb Free product ensures reliable performance.
Product Attributes
- Brand: CHANGXING ELECTRONICS CO.,LTD.
- Product Model: Seam3225
- Series: 8D Series
- Sealing Type: Seam Sealing
- Compliance: RoHS Compliant / Pb Free
- Crystal Cut Type: AT CUT (thickness shear mode)
Technical Specifications
| Parameter | Model/Value | Unit | Notes |
|---|---|---|---|
| Nominal Frequency | 25.000000 | MHz | |
| Frequency Tolerance (at 25 3 ) | 10 | ppm | |
| Load Capacitance | 12 | pF | 0.01100W/Step |
| Oscillation Mode | Fund | - | |
| Shunt Capacitance (C0) | 5 | Max. | pF |
| Drive Level | 100 | Max. | uW |
| Frequency Tolerance (Over Operating Temp. Range) | 30 | ppm | -40+85 |
| Aging (1st Year) | 3 | ppm | |
| Pulling Sensitivity (TS) | - | ppm/pF | |
| Insulation Resistance | 500 | Min. | M (at DC 100V) |
| Spurious Response | -3.0 | Max. | dB |
| Effective Resistance (Rr) | 40 | Max. | |
| Motional Capacitance (C1) | - | ||
| Storage Temperature Range | -55+125 | ||
| Dimensions (L x W x H) | 3.20 x 2.50 x 0.70 | mm | |
| Reel Quantity | 3,000 | pcs per reel | (WHITE) |
| Product Weight | 17.322 | mg |
Marking
LOGO, Nominal Frequency (MHz), Line Code, Last three digits of Batch Number, Year-Month Code (4-year cycle).
Reflow Condition
Refer to CX25.0 ****
Packing
(EIA-481-2) Standard Reel Quantity: 3,000 pcs per reel (WHITE)
Reliability Specifications
Mechanical Endurance: Vibration (10-2000 Hz, 4 hours per axis), Mechanical Shock (1000 G, 0.5ms, 3 times per axis), Drop Test (150 cm, 3 times), Solderability (2605, 101 sec).
Environmental Endurance: High Temp & Humidity (853, RH 85%, 500Hrs), Low Temp Storage (-403, 50012 hours), Thermal Shock (100 cycles), Pressure Cooker Storage (1253, RH100%, 2 bar, 240Hrs), High Temp Storage (1253, 50012 hours).
Material Composition Declaration
| Part | Material Name | Material Mass (%) | Constituent Name | Material Analysis (%) |
|---|---|---|---|---|
| Base | Ceramics | 23.09% | Al2O3 | 92.40% |
| SiO2 | 4.31% | |||
| Cr2o3 | 1.50% | |||
| MgO | 0.69% | |||
| CaO | 1.10% | |||
| Cover | Metallizing | 36.95% | Fe | 40.70% |
| Ni | 21.80% | |||
| Co | 12.80% | |||
| Ag | 21.00% | |||
| Cu | 3.70% | |||
| Electrode | Metal | 15.01% | W | 62.50% |
| Au | 4.61% | |||
| Ni | 32.89% | |||
| Fe | 47.71% | |||
| Adhesive | Polymer | 2.60% | Ni | 26.11% |
| Co | 15.44% | |||
| Ni | 10.74% | |||
| Solder | Metal | 6.40% | Ag | 75.00% |
| Wafer | Quartz | 4.00% | SiO2 | 100.00% |
| Cr | 5.56% | |||
| Ag | 94.44% |
2504101957_CHANGXING-ELECTRONICS-8DSC250G0012L_C46613757.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
