RX-8581NB:B0

Description：IC RTC CLK/CALENDAR I2C 22SON
Series：RX-8581NB

SKU:07c4c7cd0c11 Category: Real Time Clocks Brand: EPSON

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR I2C 22SON
Series：RX-8581NB
Package：Tape & Reel (TR)
Mfr：EPSON
Type：Clock/Calendar
Features：Alarm, Leap Year
Memory Size：-
Time Format：HH:MM:SS (24 hr)
Date Format：YY-MM-DD-dd
Interface：I2C, 2-Wire Serial
Voltage - Supply：1.8V ~ 5.5V
Voltage - Supply, Battery：-
Current - Timekeeping (Max)：0.8µA ~ 1.2µA @ 3V ~ 5V
Operating Temperature：-40°C ~ 85°C
Mounting Type：Surface Mount
Grade：-
Qualification：-
Package / Case：22-SMD, 20 Leads, Flat Leads
Supplier Device Package：22-SON

Download product information

RX-8581NB:B0

Overview

The RX-8581NB:B0 is a Real Time Clock (RTC) integrated circuit manufactured by Epson Timing. It utilizes an I2C-BUS interface for communication and operates within a SON-22 package configuration. The device maintains timekeeping with a specified accuracy of +/-23 PPM. This component belongs to the RX-8581NB series and is identified by the manufacturer part number RX-8581NB:B0, with Q41858191000200 listed as an alias. The product is currently designated as End-of-Life, indicating that it will be discontinued by the manufacturer.

Feature Summary

I2C-BUS interface for digital timekeeping data exchange
Timekeeping accuracy of +/-23 PPM
SON-22 package format

Procurement Notes

The RX-8581NB:B0 has reached its end-of-life stage. Manufacturers have issued discontinuance notifications, meaning new production units are no longer available through standard supply channels. Verification of current stock availability from third-party distributors is required, though long-term sourcing should not be relied upon.

Part Context

This component is part of the RX-8581NB series of real-time clocks produced by Epson Timing. It serves as a dedicated timing solution for electronic systems requiring precise clock synchronization via standard serial interfaces.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.