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| PartNumber | ATS040BSM-1 | ATS040B-E | ATS040B |
| Description | Crystals 4MHz 18pF Fund. -20C +70C | Crystals 4MHz 18pF Fund. -40C +85C | Crystals 4.0MHz 18pF Fund. -20C +70C |
| Manufacturer | CTS-Frequency Controls | CTS-Frequency Controls | - |
| Product Category | Crystals | Crystals | - |
| Series | ATS-SM | ATS | - |
| Type | MHz Crystal | MHz Crystal | - |
| Packaging | Digi-ReelR Alternate Packaging | Bulk | - |
| Mounting Style | SMD/SMT | Through Hole | - |
| Termination Style | SMD/SMT | Radial | - |
| Operating Temperature Range | - 20 C to + 70 C | - 40 C to + 85 C | - |
| Height | 0.169" (4.30mm) | 0.145" (3.68mm) | - |
| Length | 12.3 mm | 10.85 mm | - |
| Width | 4.83 mm | 4.5 mm | - |
| Package Case | HC-49/US-SM | HC-49/U | - |
| Frequency | 4MHz | 4MHz | - |
| Operating Mode | Fundamental | Fundamental | - |
| Operating Temperature | -20°C ~ 70°C | -40°C ~ 85°C | - |
| Mounting Type | Surface Mount | Through Hole | - |
| Size Dimension | 0.437" L x 0.190" W (11.10mm x 4.83mm) | 0.427" L x 0.177" W (10.85mm x 4.50mm) | - |
| Load Capacitance | 18pF | 18pF | - |
| Tolerance | 30 PPM | 30 PPM | - |
| ESR Equivalent Series Resistance | 120 Ohm | 120 Ohm | - |
| Ratings | - | - | - |
| Frequency Stability | ±50ppm | ±50ppm | - |
| Frequency Tolerance | ±30ppm | ±30ppm | - |
| ESR | 120 Ohms | 120 Ohms | - |