# RX-4581NB:B3 ROHS EPSON | Integrated Circuits (ICs) | DigiKey

**Manufacturer:** EPSON  
**MPN:** `RX-4581NB:B3 ROHS`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | EPSON |
| Manufacturer name | EPSON |
| Manufacturer | EPSON |
| Extra Product Name | RX-4581NB:B3 ROHS EPSON \| Integrated Circuits (ICs) \| DigiKey |
| atoms | 1 |
| extraShipping | 0 |
| moq | 1 |
| MPN | RX-4581NB:B3 ROHS |
| multiple | 1 |
| packaging | Cut Tape (CT) & Digi-Reel? |
| qtyInStock | 0 |
| SKU | 1866107 |
| snippet | Real Time Clock (RTC) IC Clock/Calendar 16B SPI 22-SMD, 20 Leads, Flat Leads |
| tierMinQty1 | 1 |
| tierMinQty2 | 250 |
| tierPrice1 | 5.22000 |
| tierPrice2 | 3.64448 |
| Category | Integrated Circuits (ICs) |
| Mfr | EPSON |
| Series | RX-4581NB |
| Package | Tape & Reel (TR) |
| Product Status | Obsolete |
| Type | Clock/Calendar |
| Features | Alarm, Leap Year, SRAM |
| Memory Size | 16B |
| Time Format | HH:MM:SS (24 hr) |
| Date Format | YY-MM-DD-dd |
| Interface | SPI |
| Voltage - Supply | 1.6V ~ 5.5V |
| Voltage - Supply, Battery | - |
| Current - Timekeeping (Max) | 0.8?A ~ 1.2?A @ 3V ~ 5V |
| Operating Temperature | -40?C ~ 85?C |
| Mounting Type | Surface Mount |
| Package / Case | 22-SMD, 20 Leads, Flat Leads |
| Supplier Device Package | 22-SON |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Digi-Key | 1866107 | 5.22 | 1 | None | 1 |
| iodParts | RX-4581NB:B3 ROHS |  |  | 131 | 1 |
| Digi-Key | 1866106 | 5.53 | 1 | None | 1 |
| Digi-Key | 1866105 |  |  | None | 1 |

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