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Specifications
Normal temperature Frequency Tolerance:
±10ppm
Frequency Stability:
±30ppm
Load Capacitance:
20pF
Operating Temperature:
-40℃~+85℃
Equivalent Series Resistance(ESR):
-
Frequency:
27MHz
Mfr. Part #:
8DSC270G0020L
Package:
SMD3225-4P
Key Attributes
Model Number:
8DSC270G0020L
Product Description
Product Overview
The Seam3225 is a high-precision Quartz Crystal Resonator designed for demanding applications in wireless communication. 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 product is RoHS Compliant and Pb Free.
Product Attributes
- Brand: CHANGXING ELECTRONICS CO.,LTD.
- Product Series: 8D Series
- Sealing Type: Seam Sealing
- Compliance: RoHS Compliant / Pb Free
- Crystal Cutting Type: AT CUT (thickness shear mode)
Technical Specifications
| Parameter | Model/Value | Units | Notes |
|---|---|---|---|
| Nominal Frequency | 27.000000 | MHz | Fund |
| Frequency Tolerance (at 25 3 ) | 10 | ppm | |
| Load Capacitance | 20 | pF | |
| Operating Temperature Range | -40+85 | ||
| Storage Temperature Range | -55+125 | ||
| Aging (1st Year) | 3 | ppm | |
| Frequency Tolerance (Over Operating Temp. Range) | 30 | ppm | |
| Shunt Capacitance C0 | 5 | Max. | pF |
| Motional Capacitance C1 | - | ||
| Effective Resistance Rr | 40 | Max. | |
| Pulling Sensitivity TS | - | ppm/pF | |
| Drive Level | 100 | Max. | uW |
| Insulation Resistance | 500 | Min. | M |
| Spurious Response | -3.0 | Max. | dB |
| Dimensions (L x W x H) | 3.20 x 2.50 x 0.70 | mm | (Approximate based on visual representation) |
| Reel Quantity | 3,000 | pcs per reel | (WHITE) |
Packing
EIA-481-2 Standard Reel Quantity: 3,000 pcs per reel (WHITE).
Material Composition Declaration
| Part Name | Material Name | Material Mass (mg) | Material Mass (%) | Constituent Name | CAS No. | Material Analysis (%) |
|---|---|---|---|---|---|---|
| Base | Ceramics | 23.09 | 23.09% | Al2O3 | 1344-28-1 | 92.40% |
| SiO2 | 7631-86-9 | 4.31% | ||||
| Cr2o3 | 1308-38-9 | 1.50% | ||||
| MgO | 1309-48-4 | 0.69% | ||||
| CaO | 1305-78-8 | 1.10% | ||||
| Electrode | Metal | 20.91 | 20.91% | Fe | 7439-89-6 | 40.70% |
| Ni | 7440-02-0 | 21.80% | ||||
| Co | 7440-48-4 | 12.80% | ||||
| Ag | 7440-22-4 | 21.00% | ||||
| Cu | 7440-50-8 | 3.70% | ||||
| Metallizing (Metal) | 6.40 | 6.40% | W | 7440-33-7 | 62.50% | |
| Au | 7440-57-5 | 4.61% | ||||
| Ni | 7440-02-0 | 32.89% | ||||
| Cover | 15.01 | 15.01% | Ni | 7440-02-0 | 47.71% | |
| Co | 7440-48-4 | 15.44% | ||||
| Adhesive | Polymer | 3.62 | 3.62% | Ni | 7440-02-0 | 26.11% |
| Ni (Plating) | 7440-02-0 | 10.74% | ||||
| Solder | Metal | 36.95 | 36.95% | Ag | 7440-22-4 | 75.00% |
| Crystalline Silicon Dioxide | 5.00% | |||||
| Petroleum Solvent | 5.00% | |||||
| Silicone Resin | 15.00% | |||||
| Wafer | Quartz | 0.45 | 2.60% | SiO2 | 14808-60-7 | 100.00% |
| Metallizing | 0.20 | 1.15% | Cr | 7440-47-3 | 5.56% | |
| Ag | 7440-22-4 | 94.44% | ||||
| 4J29 (Base Material) | 20.91 | 20.91% | ||||
| Plating (KV Ring) | 0.05 | 0.29% |
2504101957_CHANGXING-ELECTRONICS-8DSC270G0020L_C46613764.pdf
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