| Picture | ES Part No. | Part No | Stock | Price | Datasheet | Pb Free | RoHS | Description | Vendor | Package / Case | Packaging |
| | | | | | | | | | | |
 | 0057-0170-2 | X1B000421000114 | 1,000 | 40.40 |  | PB-Free | RoHS | Real Time Clock Module, RX8111CE A, Built-In RAM 8Bit x 64Word(512Bit), Auto Power Switching,8 Time Stamps, Frequency Tolerance ±11.5ppm, I2C-Bus | EPSON | SMD-10 | TAPE & REEL |
 | 0086-1183-1 | TPL5010QDDCRQ1 | 24 | 42.68 | | PB-Free | RoHS | Nano-Power System Timer with Watchdog Function, Selectable Time Intervals 100ms to 7200s, Current Consumption of 35nA Typ, Supply Voltage 1.8-5.5V | TEXAS INSTRUMENTS | SOT-23-6 | TAPE & REEL |
| 0057-0172-6 | X1B000431000111 | 1,000 | 44.29 | | PB-Free | RoHS | Real Time Clock Module, RX4111CE A, Built-In RAM 8Bit x 64Word(512Bit), Auto Power Switching,8 Time Stamps, Frequency Tolerance ±11.5ppm, SPI-4 Wire | EPSON | SMD-10 | TAPE & REEL |
 | 0067-0086-7 | DS1302Z+T/R | 0 | 47.98 | | PB-Free | RoHS | Real Time Clock, 31Bytes RAM, 3-Wire Serial, Trickle Charge Timekeeping Chip, 8PIN SOIC (150-mil) | DALLAS/MAXIM | SOIC-8 | TAPE & REEL |
| 0035-1813-8 | MCP7940NT-I/SN | 2,920 | 48.26 | | PB-Free | RoHS | Battery-Backed I2C Real-Time Clock/Calendar(RTCC) with SRAM 64Bytes | MICROCHIP | SOIC-8 | TAPE & REEL |
 | 0035-1674-5 | MCP7940N-I/P | 361 | 49.54 | | PB-Free | RoHS | Battery-Backed I2C Real-Time Clock-Calendar with SRAM 64 Bytes, Automatic Switchover to Battery Backup | MICROCHIP | PDIP-8 | TUBE |
| 0057-0168-5 | X1B000301000214 | 995 | 50.93 | | PB-Free | RoHS | Real Time Clock Module, RX8900CE UB, Built-In DTCXO,with Auto Power Switching/Temperature Sensor Function, Frequency Stability ±5ppm, I2C-Bus | EPSON | SMD-10 | TAPE & REEL |
| 0035-1443-0 | MCP7940N-I/SN | 3,231 | 52.13 | | PB-Free | RoHS | Battery-Backed I2C Real Time Clock/Calendar with SRAM 64 Bytes, Vcc = 1.8V to 5.5V | MICROCHIP | SOIC-8 | TUBE |
| 0067-0060-1 | DS1302+ | 320 | 52.26 | | PB-Free | RoHS | Real Time Clock, 31 Bytes RAM, 3-Wire Serial, Trickle Charge Timekeeping Chip, 8PIN DIP (300-mil) | DALLAS/MAXIM | PDIP-8 | TUBE |
| 1522-0207-7 | MCP79411T-I/SN | 1,000 | 54.48 | | PB-Free | RoHS | Battery-Backed I2C Real-Time Clock/Calendar with SRAM 64 Bytes, 1 Kbit EEPROM, Protected EEPROM, with EUI-48 MAC Address | MICROCHIP | SOIC-8 | TAPE & REEL |
| 0057-0169-7 | X1B000371000214 | 1,000 | 56.10 | | PB-Free | RoHS | Real Time Clock Module, RX8804CE XB, Built-In DTCXO, with Internal State Output Function, 1 Time Stamp, Frequency Stability ±8ppm, I2C-Bus | EPSON | SMD-10 | TAPE & REEL |
| 0035-1444-3 | MCP79411-I/SN | 164 | 57.93 | | PB-Free | RoHS | Battery-Backed I2C Real-Time Clock/Calendar with SRAM 64 Bytes, 1 Kbit EEPROM, Protected EEPROM, with EUI-48 MAC Address | MICROCHIP | SOIC-8 | TUBE |
 | 0223-0039-4 | ISL12028IBZ | 1,137 | 63.24 | | PB-Free | | Real Time Clock/Calendar with EEPROM Automatic Backup to Battery or SuperCap | INTERSIL/RENESAS | SOIC-14 | TUBE |
| 0223-0037-8 | X1228S14-4.5A | 17 | 66.14 | | PB-Free | | Real Time Clock/Calendar/CPU Supervisor with EEPROM, 512x 8 Bit, I2C Interface Battery Switch or Super Cap Input | INTERSIL/RENESAS | SOIC-14 | TUBE |
| 0067-0112-5 | DS1307N+ | 0 | 73.82 | | PB-Free | RoHS | 64 x 8, Serial, I2C Real-Time Clock, 56 Bytes of NV SRAM | DALLAS/MAXIM | PDIP-8 | TUBE |
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