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| PartNumber | ECS-50-20-1X | ECS-50-18-18-TR | ECS-50-20-4 |
| Description | Crystals 5MHz 20pF | Crystals 5MHz 18pF 100ppm -40C +85C | Crystals 5MHz 20pF |
| Manufacturer | ECS | ECS | ECS |
| Product Category | Crystals | Crystals | Crystals |
| RoHS | Y | E | N |
| Termination Style | Radial | SMD/SMT | Radial |
| Package / Case | HC-49 | 11.8 mm x 5.5 mm | - |
| Load Capacitance | 20 pF | 18 pF | 20 pF |
| Frequency | 5 MHz | 5 MHz | 5 MHz |
| Tolerance | 30 PPM | 30 PPM | 30 PPM |
| Frequency Stability | 50 PPM | 100 PPM | 50 PPM |
| Minimum Operating Temperature | - 10 C | - 40 C | - 10 C |
| Maximum Operating Temperature | + 70 C | + 85 C | + 70 C |
| Length | 11.35 mm | 11.8 mm | 11.35 mm |
| Width | 4.65 mm | 5.5 mm | 4.65 mm |
| Height | 13.46 mm | 2.5 mm | 3.5 mm |
| Series | HC49UX | CSM12 | HC-49US |
| Packaging | Bulk | Reel | - |
| Type | Quartz Crystal | - | Quartz Crystal |
| Brand | ECS | ECS | ECS |
| Mounting Style | Through Hole | SMD/SMT | Through Hole |
| Product Type | Crystals | Crystals | Crystals |
| Factory Pack Quantity | 100 | 1000 | 100 |
| Subcategory | Crystals | Crystals | Crystals |
| Unit Weight | 0.034000 oz | - | - |
| ESR | - | 150 Ohms | 120 Ohms |
| Drive Level | - | 100 uW | 500 uW |
| Product | - | - | Crystals |
| Lead Spacing | - | - | 4.88 mm |