Tariff Free Zone Jameco will remove tariff surcharges for online orders on in-stock items - Learn More »

DS1307 Real Time Clock Breakout Board

You may also like:
DS12887 DS12887
DS1307N+ DS1307N+
277258VP 277258VP
DS1210 DS1210
DS1302 DS1302
DS1307+ DS1307+

The product is not available for purchasing. Please check our replacement and substitute products.

    • Electronics Parts Locator
# of units Price
1+ $7.49
10+ $6.95

Request a Large Quantity Quote

DS1307 Real Time Clock Breakout Board

This real time clock (RTC) with battery backup allows your microcontroller project to keep track of time even if it's reprogrammed or if the power is lost. It's perfect for data logging, clock-building, time stamping, timers, alarms, and more. The DS1307 is the most popular RTC but it requires 5V power to work (although we've used it with 5V power and 3.3V logic successfully).

The DS1307 is simple and inexpensive but not a high precision device. It may lose or gain up to 2 seconds a day. For a high-precision, temperature compensated alternative, take a look at the DS3231 precision RTC.

It works great with an Arduino using our RTC library or with a Raspberry Pi (or similar single board linux computer).

Note: This product does not come with a CR1220 coin cell battery. We recommend you purchase a CR1220 coin cell battery to use with this product.


  • PCB & header are included
  • Plugs into any breadboard, or you can use wires
  • Two mounting holes
  • Will keep time for 5 years or more


  • Length: 25.8mm/1.02in
  • Width: 21.7mm/0.85in
  • Height: 5mm/0.2in
  • Weight: 2.3g/0.09oz
  • Mounting holes are 2.2mm(0.086in) diameter, 25mm(0.98in) apart
  • This board/chip uses I²C 7-bit address 0x68

Report a problem
Suggest a product
No specifications are available at this time. Call for more information.

Report a problem
Suggest a product