# A-4.000-18 Raltron Electronics | Crystals, Oscillators, Resonators | DigiKey

**Manufacturer:** Raltron Electronics  
**MPN:** `A-4-000-18`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Raltron Electronics |
| Manufacturer name | Raltron Electronics |
| Manufacturer | Raltron Electronics |
| DimensionUnit | inch |
| Extra Product Name | A-4.000-18 Raltron Electronics \| Crystals, Oscillators, Resonators \| DigiKey |
| atoms | 1 |
| extendedLead | 12 Weeks |
| extraShipping | 0 |
| height | 0.531 |
| height_Attrib | Height - Seated (Max) |
| moq | 1 |
| MPN | A-4-000-18 |
| multiple | 1 |
| packaging | Bulk |
| qtyInStock | 89 |
| SKU | 10271745 |
| snippet | 4 MHz ?50ppm Crystal 18pF 80 Ohms HC-49/U |
| tariff | 1.2 |
| tierMinQty1 | 1 |
| tierMinQty2 | 10 |
| tierMinQty3 | 50 |
| tierMinQty4 | 100 |
| tierMinQty5 | 500 |
| tierMinQty6 | 1,000 |
| tierMinQty7 | 2,500 |
| tierMinQty8 | 5,000 |
| tierMinQty9 | 10,000 |
| tierPrice1 | 0.588 |
| tierPrice2 | 0.49079999999999996 |
| tierPrice3 | 0.44184 |
| tierPrice4 | 0.39264 |
| tierPrice5 | 0.373056 |
| tierPrice6 | 0.31414800000000004 |
| tierPrice7 | 0.294516 |
| tierPrice8 | 0.28469999999999995 |
| tierPrice9 | 0.22907 |
| Category | Crystals, Oscillators, Resonators |
| Mfr | Raltron Electronics |
| Series | A |
| Package | Bulk |
| Product Status | Active |
| Type | MHz Crystal |
| Frequency | 4 MHz |
| Frequency Stability | ?100ppm |
| Frequency Tolerance | ?50ppm |
| Load Capacitance | 18pF |
| ESR (Equivalent Series Resistance) | 80 Ohms |
| Operating Mode | Fundamental |
| Operating Temperature | -20?C ~ 70?C |
| Ratings | - |
| Mounting Type | Through Hole |
| Package / Case | HC-49/U |
| Size / Dimension | 0.435" L x 0.183" W (11.05mm x 4.65mm) |
| Height - Seated (Max) | 0.531" (13.49mm) |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Digi-Key | 10271745 | 0.588 | 1 | 89 | 1 |

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Structured data: `/python/html6/product/500/36000000/36151000/part_--A400018---RaltronElectronics--d6792cd968.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp