 | RX-4571LC:B3 PURE SN | 500 | EPSON | 19+ | 12-TSSOJ | ￥2.9410 | IC REAL TIME CLOCK 12-VSOJ | 购买 |
| DS1338U-33+ | 744 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥3.3100 | IC RTC 56BYTE NV RAM 3.3V 8-USOP | 购买 |
| DS1340U-33+ | 2494 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥3.3100 | IC RTC I2C W/CHARGER 3.3V 8-USOP | 购买 |
| DS1340Z-3+ | 326 | Maxim Integrated Products | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥3.3100 | IC RTC I2C W/CHARGER 3V 8-SOIC | 购买 |
| DS1338Z-18+ | 12 | Maxim Integrated Products | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥3.3100 | IC RTC 56BYTE NV RAM 1.8V 8-SOIC | 购买 |
| DS1338U-18+ | 95 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥3.3100 | IC RTC 56BYTE NV RAM 1.8V 8-USOP | 购买 |
| M41T93ZQA6F | 2000 | STMicroelectronics | 19+ | 16-QFN | ￥1.7080 | IC RTC SERIAL SPI BUS 16QFN | 购买 |
| M41T93ZQA6F | 2000 | STMicroelectronics | 19+ | 16-QFN | ￥1.7080 | IC RTC SERIAL SPI BUS 16QFN | 购买 |
| M41T93ZQA6F | 2000 | STMicroelectronics | 19+ | 16-QFN | ￥1.7080 | IC RTC SERIAL SPI BUS 16QFN | 购买 |
| RX-4801SA:UB3 PURE SN | 6750 | EPSON | 19+ | 14-SOIC（0.209"，5.30mm 宽） | ￥4.1760 | IC REAL TIME CLOCK 14-SOP | 购买 |
| RX-4045SA:AA3 | 250 | EPSON | 19+ | 14-SOIC（0.209"，5.30mm 宽） | ￥2.8050 | IC REAL TIME CLOCK 14-SOP | 购买 |
| RX-4045SA:AA3 | 250 | EPSON | 19+ | 14-SOIC（0.209"，5.30mm 宽） | ￥2.8050 | IC REAL TIME CLOCK 14-SOP | 购买 |
| DS1672-33+ | 669 | Maxim Integrated Products | 19+ | 8-DIP（0.300"，7.62mm） | ￥3.4700 | IC TIMEKEEPER 3.3V 32-BIT 8-DIP | 购买 |
| DS1339U-3+ | 2189 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥3.4800 | IC RTC I2C W/ALARM 8-USOP | 购买 |
| RTC-7301SF:B3 ROHS | 1750 | EPSON | 19+ | 24-SOP（0.209"，5.30mm 宽） | ￥5.3235 | IC REAL TIME CLOCK 24-SSOP | 购买 |
| DS1307Z+ | 2773 | Maxim Integrated Products | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥3.5300 | IC RTC SERIAL 512K 8-SOIC | 购买 |
| DS1302+ | 840 | Maxim Integrated Products | 19+ | 8-DIP（0.300"，7.62mm） | ￥3.5600 | IC TIMEKEEPER T-CHARGE 8-DIP | 购买 |
| RX-8801SA:UB3 PURE SN | 250 | EPSON | 19+ | 14-SOIC（0.209"，5.30mm 宽） | ￥5.0400 | IC REAL TIME CLOCK 14-SOP | 购买 |
| RX-8801SA:UB3 PURE SN | 250 | EPSON | 19+ | 14-SOIC（0.209"，5.30mm 宽） | ￥5.0400 | IC REAL TIME CLOCK 14-SOP | 购买 |
| DS1391U-33+ | 2064 | Maxim Integrated Products | 19+ | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） | ￥3.8600 | IC RTC W/CHARGER 10-USOP | 购买 |
