Product Overview
The 7.0x5.0 SMD Crystal Oscillators, 7E Series, from Changxing Electronics are seam-sealed clock crystal oscillator units designed for automatic mounting and reflow soldering. They offer high precision across a wide frequency range, with features such as Tri-State function, a supply voltage range of 1.8V to 5.0V, high stability, low jitter, and low power consumption. These RoHS Compliant and Pb Free oscillators are ideal for applications in wireless communication, PCs, and LCDMs.
Product Attributes
- Brand: CHANGXING ELECTRONICS CO.,LTD.
- Origin: Fujian, China
- Certifications: RoHS Compliant / Pb Free
- Series: 7E Series
- Packaging: EIA-481-2
- MSL Level: 1 (IPC/JEDEC J-STD-033C)
Technical Specifications
| Specification | Value | Unit | Notes |
|---|---|---|---|
| Nominal Frequency | 32.000000 | MHz | |
| Tolerance @ 25 Degree | 10 | ppm | |
| Stability over Operation Temp. | 20 | ppm | |
| Operating Temperature Range | -4085 | ||
| Storage Temperature Range | -55125 | ||
| Supply Voltage (Vdd) | 1.8V5.0V | Vdc | |
| Supply Current (Icc) | 5 | A max | Standby current (1.8V3.3V) |
| Phase Jitter (12KHz 20MHz) | 5 ps max | ||
| Rise/Fall Time | 10 | ns max | |
| Output Voltage VOL | 30%Vdd max | ||
| Output Voltage VOH | 70%Vdd min | ||
| Output Load | 15 | pF | |
| Start-up Time | 10 | ms max | |
| Aging | 3 | ppm/year | |
| Output State Control | Enable/disable | ||
| Output Waveform | CMOS | ||
| Output Symmetry | 5010% | ||
| Dimensions (L x W x H) | 7.0 x 5.0 x 1.3 | mm | SMD |
| Product Number | 7ESC320C0033L | ||
| Model | 7.0x5.0 SMD Crystal Oscillators CMOS Output / 7E Series |
Reflow Condition
Temperature profile for reflow soldering: Peak: 250+50, Soldering zone: 230 or more, 3010s. Pre-heating zone 1: 150180, 9030s.
Soldering iron method: Bit temperature: 35010, Application time of soldering iron: 31 s.
Reliability Specifications
Frequency change after test 5ppm for the following tests:
- Temperature Cycle (GB/T2423.22-2002, Method Nb)
- Low Temperature Storage (GB/T2423.1-2001, MethodAa)
- Humidity (GB/T2423.3-2006, Method Cab)
- High Temperature Storage (GB/T2423.2-2001, MethodBa)
- Drop (GB/T 2423.8-1995, Method Ed)
- Vibration (GB/T 2423.10-1995, Method Fc)
- Resistance to Soldering Heat (GB/T 2423.28-2005, Test Tb Method 1B)
- Shock (GB/T 2423.5-1995, Method Ea)
- Solderability (GB/T 2423.28-2005, Method Tc)
- Terminal Strength (JIS-C-6429 Method 1 & 2)
No visible damages are expected after these tests.
Material Composition Declaration
| No. | Name of Part | Material Name | Constituent name | CAS No. | Material Analysis(%) |
|---|---|---|---|---|---|
| 1 | Base () | Ceramics () | Al2O3 | 1344-28-1 | 63.88% |
| SiO2 | 14464-46-1 | 3.79% | |||
| Cr2o3 | 1308-38-9 | 1.29% | |||
| Mo | 7439-98-7 | 1.00% | |||
| Fe | 7439-89-6 | 8.85% | |||
| Ni | 7440-02-0 | 4.75% | |||
| Co | 7440-48-4 | 2.98% | |||
| Ag | 7440-22-4 | 2.80% | |||
| Cu | 7440-50-8 | 1.04% | |||
| 2 | Metallization () | W | 7440-33-7 | 9.25% | |
| Au | 7440-57-5 | 0.13% | |||
| Ni | 7440-02-0 | 0.24% | |||
| Fe | 54.00% | ||||
| Co | 7440-48-4 | 17.02% | |||
| Ni | 7440-02-0 | 28.32% | |||
| Ni | 7440-02-0 | 0.66% | |||
| 3 | Adhesive Resin () | Epoxy | 100.00% | ||
| 4 | Blank () | Quartz () | SiO2 | 14808-60-7 | 100.00% |
| 5 | Wire () | Gold () | Au | 7440-57-5 | 100.00% |
| 6 | IC | Silicon () | Silicon | 7440-21-3 | 100.00% |
| 7 | Electrode () | Silver () | Ag | 7440-22-4 | 100.00% |
| Conductive Resin () | Silver | 7440-22-4 | 74.00% | ||
| Ethyl alcohol | 64-17-5 | 0.60% | |||
| Bisphenol A-epichlorohydrin polymer | 25068-38-6 | 0.60% | |||
| Xylenes (o-, m-, p-isomers) | 1330-20-7 | 0.60% | |||
| Ethylbenzene | 100-41-4 | 0.06% | |||
| Silicone resin | 8.62% | ||||
| Silica | 8.52% | ||||
| Petroleumsolvents | 7.00% | ||||
| 8 | Lid () | Kovar |
2512081627_CHANGXING-ELECTRONICS-7ESC320C0033L_C48927866.pdf
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