PCF21 Series
| Mfr.Part# | Description | Manufacturer | In Stock | Operation |
| PCF2129AT/1,512 | IC RTC CLK/CALENDAR I2C 20-SOIC | NXP USA Inc. | 3782 |
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| PCF2127AT/1,512 | IC RTC CLK/CAL I2C/SPI 20-SOIC | NXP USA Inc. | 5241 |
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| PCF2123BS/1,512 | IC RTC CLK/CALENDAR SPI 16-HVQFN | NXP USA Inc. | 833 |
|
| PCF2129AT/1,518 | IC RTC CLK/CALENDAR I2C 20-SOIC | NXP USA Inc. | 8448 |
|
| PCF2127AT/1,518 | IC RTC CLK/CAL I2C/SPI 20-SOIC | NXP USA Inc. | 9306 |
|
| PCF2120TK/1,118 | IC OSC XTAL 32KHZ 10-HVSON | NXP USA Inc. | 8252 |
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