 | ISL1208IB8Z-T7A | 250 | Intersil | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥1.5100 | IC RTC/CALENDAR I2C LP 8SOIC | 购买 |
| ISL12082IB8Z | 980 | Intersil | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥3.0500 | IC RTC I2C LO-POWER 8-SOIC | 购买 |
| ISL1218IBZ | 955 | Intersil | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥3.1900 | IC RTC LP BATT BACKED SRAM 8SOIC | 购买 |
| ISL1218IUZ | 88 | Intersil | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥3.3600 | IC RTC LP BATT BACKED SRAM 8MSOP | 购买 |
| ISL12026IBZ-T7A | 500 | Intersil | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥2.2000 | IC RTC/CALENDAR EEPROM 8SOIC | 购买 |
| ISL12024IBZ | 940 | Intersil | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥4.5900 | IC RTC/CALENDAR EEPROM 8-SOIC | 购买 |
| ISL1220IUZ | 621 | Intersil | 19+ | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） | ￥3.0200 | IC RTC LP BATT BACK SRAM 10MSOP | 购买 |
| M41ST87YMX6 | 3 | STMicroelectronics | 19+ | 28-SOIC（0.295"，7.50mm 宽） | ￥7.1400 | IC RTC 5.0V 1280BIT NVRAM 28SOIC | 购买 |
| M48T58Y-70MH1F | 936 | STMicroelectronics | 19+ | 带 SNAPHAT 插座的 28-SOIC（0.337"/8.56mm 宽） | ￥7.1746 | IC TIMEKPR SRAM 64KBIT 5V 28SOH | 购买 |
| M48T18-100PC1 | 102 | STMicroelectronics | 19+ | 28-DIP 模块（0.600"，15.24mm） | ￥17.0400 | IC TIMEKPR NVRAM 64KBIT 5V 28-DI | 购买 |
| M48T08-100PC1 | 230 | STMicroelectronics | 19+ | 28-DIP 模块（0.600"，15.24mm） | ￥17.3300 | IC TIMEKPR NVRAM 64KBIT 5V 28-DI | 购买 |
| DS1337S+T&R | 2500 | Maxim Integrated Products | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥1.1730 | IC RTC SERIAL 2WIRE LP 8-SOIC | 购买 |
| DS1341U+ | 182 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥2.7900 | IC RTC I2C W/ALARM 8USOP | 购买 |
| DS1307Z+T&R | 5000 | Maxim Integrated Products | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥1.4408 | IC RTC SERIAL 512K 8-SOIC | 购买 |
| DS1338U-33+T&R | 3496 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥0.0000 | IC RTC 56BYTE NV RAM 3.3V 8-USOP | 购买 |
| DS1340U-3+ | 136 | Maxim Integrated Products | 19+ | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） | ￥3.3100 | IC RTC I2C W/CHARGER 3V 8-USOP | 购买 |
| DS1682S+T&R | 2500 | Maxim Integrated Products | 19+ | 8-SOIC（0.154"，3.90mm 宽） | ￥2.1038 | IC TIMEKEEPER ALARM ELAPSE 8SOIC | 购买 |
| DS1305EN+T&R | 2500 | Maxim Integrated Products | 19+ | 20-TSSOP（0.173"，4.40mm 宽） | ￥2.4990 | IC RTC SERIAL ALARM IND 20-TSSOP | 购买 |
| RX-4574LC:B3 PURE SN | 500 | EPSON | 19+ | 12-TSSOJ | ￥3.3000 | IC REAL TIME CLOCK 12-VSOJ | 购买 |
| RX-4574LC:B3 PURE SN | 500 | EPSON | 19+ | 12-TSSOJ | ￥3.3000 | IC REAL TIME CLOCK 12-VSOJ | 购买 |
