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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Interface Type	Date Format	Time Format	Package/Case	Battery Backup Switching	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Series	Mounting Style	Qualification	Packaging
Real Time Clock Real Time Clock, automotive grade AEC-Q200 RV-3029-C3-TB-QA-Opt. B Micro Crystal 1: £4.30 1,000Expected 12/11/2026	Mfr. Part No. RV-3029-C3-TB-QA-Opt. B Mouser Part No 428-RV3029C3TBQAOPTB	Micro Crystal	Real Time Clock Real Time Clock, automotive grade AEC-Q200	Datasheet	1,000Expected 12/11/2026	Cut Tape £4.30 £3.25 £2.98 £2.69 £2.66 Reel £2.24 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD	HH:MM:SS:hh (12 hr, 24 hr)	SON-10	Backup Switching	1.3 V	5.5 V	- 40 C	+ 125 C	RV-3029-C3	SMD/SMT	AEC-Q200	Reel, Cut Tape, MouseReel
Real Time Clock RTCs 3725 10-SMD I2C HH:MM:SS (12/24 hr) YY-MM-DD-dd AB-RTCMC-32.768KHZ-EOZ9-S3-HAT ABRACON 1: £7.18 2,000Expected 11/05/2027	Mfr. Part No. AB-RTCMC-32.768KHZ-EOZ9-S3-HAT Mouser Part No 815-2768KHZEOZ9S3HAT	ABRACON	Real Time Clock RTCs 3725 10-SMD I2C HH:MM:SS (12/24 hr) YY-MM-DD-dd	Datasheet	2,000Expected 11/05/2027	Cut Tape £7.18 £5.59 £5.19 £4.75 Reel £4.10 View £4.63 £4.29 £4.02 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 4-Wire, SPI	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.1 V	5.5 V	- 40 C	+ 85 C	AB-RTCMC	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real Time Clock IC RS5C372B-E2-F Nisshinbo 1: £1.23 1,984Expected 20/11/2026	Mfr. Part No. RS5C372B-E2-F Mouser Part No 848-RS5C372B-E2-F	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC	Datasheet	1,984Expected 20/11/2026	Cut Tape £1.23 £0.899 £0.818 £0.721 Reel £0.593 View £0.678 £0.651 £0.595 £0.588 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-8	Backup Switching	2 V	6 V	- 40 C	+ 85 C	RS5C372	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.7 AEC-Q200 RV-8263-C8 32.768kHz-20PPM-TA-QA Micro Crystal 1: £1.49 4,000Expected 30/10/2026	Mfr. Part No. RV-8263-C8 32.768kHz-20PPM-TA-QA Mouser Part No 428-204291-MC01	Micro Crystal	Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.7 AEC-Q200 Learn More about Micro Crystal rv 8263 c8 rtc modules	Datasheet	4,000Expected 30/10/2026	Cut Tape £1.49 £1.09 £0.986 £0.871 Reel £0.786 View £0.818 £0.787 £0.758 £0.75 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SON-8		900 mV	5.5 V	- 40 C	+ 85 C	RV-8263-C8	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RV-8263-C7-32.768KHZ-20PPM-TA-QA Micro Crystal 1: £1.61 2,000Expected 20/11/2026	Mfr. Part No. RV-8263-C7-32.768KHZ-20PPM-TA-QA Mouser Part No 428-8263C7328K20PTQA	Micro Crystal	Real Time Clock Learn More about Micro Crystal rv8263c7 realtime clock modules	Datasheet	2,000Expected 20/11/2026	£1.61 £1.18 £1.07 £0.952 View £0.89 £0.859 £0.847 £0.807 £0.791	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	900 mV	5.5 V	- 40 C	+ 85 C		SMD/SMT
Real Time Clock Serial Access Real Time Clock M41T81SMY6F STMicroelectronics 1: £7.57 2,000Expected 14/06/2027	Mfr. Part No. M41T81SMY6F Mouser Part No 511-M41T81SMY6F	STMicroelectronics	Real Time Clock Serial Access Real Time Clock	Datasheet	2,000Expected 14/06/2027	Cut Tape £7.57 £5.90 £5.48 £5.02 £4.85 Reel £4.57 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOX-18	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T81S	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real Time Clock IC RS5C372A-E2-F Nisshinbo 1: £1.24 4,000On Order	Mfr. Part No. RS5C372A-E2-F Mouser Part No 848-RS5C372AE2F	Nisshinbo	Real Time Clock 2-Wire Real Time Clock IC Learn More about Nisshinbo ricoh rtcs	Datasheet	4,000On Order On Order Ship Dates Mfr. No: RS5C372A-E2-F Stock: 0 On Order: 2,000 Expected 20/11/2026 2,000 Expected 05/01/2027 Factory Lead Time: 15 Weeks	Cut Tape £1.24 £0.908 £0.818 £0.721 Reel £0.61 View £0.678 £0.651 £0.643 £0.597 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-8	Backup Switching	1.7 V	6 V	- 40 C	+ 85 C	RS5C372	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION RV5C338A-E2-F Nisshinbo 1: £1.23 2,000Expected 05/11/2026	Mfr. Part No. RV5C338A-E2-F Mouser Part No 848-RV5C338A-E2-F	Nisshinbo	Real Time Clock 3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION	Datasheet	2,000Expected 05/11/2026	Cut Tape £1.23 £0.899 £0.818 £0.773 Reel £0.593 View £0.595 £0.588	Min.: 1 Mult.: 1 : 2,000				SSOP-10						RV5C338A			Reel, Cut Tape
Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L ISL12022IBZ-T Renesas / Intersil 1: £3.92 2,467Expected 12/01/2027	Mfr. Part No. ISL12022IBZ-T Mouser Part No 968-ISL12022IBZ-T	Renesas / Intersil	Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L	Datasheet	2,467Expected 12/01/2027	Cut Tape £3.92 £2.98 £2.75 £2.50 £2.47 Reel £2.47 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL12022	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz 1337AGDCGI8 Renesas Electronics 1: £2.63 2,700Expected 13/03/2028	Mfr. Part No. 1337AGDCGI8 Mouser Part No 972-1337AGDCGI8	Renesas Electronics	Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz	Datasheet	2,700Expected 13/03/2028	Cut Tape £2.63 £1.96 £1.80 £1.61 View Reel £1.41 £1.52 £1.48 £1.42 £1.41 MouseReel Available	Min.: 1 Mult.: 1 : 3,000				SOIC-8						1337AGD	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock .9RTC BASE 1338-31DCGI Renesas Electronics 1: £2.92 1,305Expected 18/02/2028	Mfr. Part No. 1338-31DCGI Mouser Part No 972-1338-31DCGI	Renesas Electronics	Real Time Clock .9RTC BASE	Datasheet	1,305Expected 18/02/2028	£2.92 £2.19 £1.92 £1.77 View £1.69 £1.68	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	1.3 V	3.7 V	- 40 C	+ 85 C	1338	SMD/SMT		Tube
Real Time Clock Real Time Clock 1339-31DVGI8 Renesas Electronics 1: £2.50 2,500Expected 17/01/2028	Mfr. Part No. 1339-31DVGI8 Mouser Part No 972-1339-31DVGI8	Renesas Electronics	Real Time Clock Real Time Clock	Datasheet	2,500Expected 17/01/2028	Cut Tape £2.50 £1.86 £1.76 Reel £1.38	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.3 V	3.7 V	- 40 C	+ 85 C	1339	SMD/SMT		Reel, Cut Tape
Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64 MCP79512-I/MS Microchip Technology 1: £1.05 500Expected 28/10/2026	Mfr. Part No. MCP79512-I/MS Mouser Part No 579-MCP79512-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64 Learn More about Microchip Technology microchip mcp795xx	Datasheet	500Expected 28/10/2026	£1.05 £0.96 £0.943	Min.: 1 Mult.: 1	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	MSOP-10	Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock 256K (32Kx8) 70ns M48T37Y-70MH1F STMicroelectronics 1: £15.40 28In Stock	Mfr. Part No. M48T37Y-70MH1F Mouser Part No 511-M48T37Y-70MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	28In Stock	Cut Tape £15.40 £13.23 £12.37 £10.96 View Reel £10.12 £10.69 £10.14 £10.12 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-44	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	M48T37Y	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz, 20PPM, Real-Time Clock Module with SPI-Bus RV-8063-C8 32.768kHz-20PPM-TA-QC Micro Crystal 1: £1.42 1,000Expected 05/02/2027	Mfr. Part No. RV-8063-C8 32.768kHz-20PPM-TA-QC Mouser Part No 428-204233-MC01	Micro Crystal	Real Time Clock 32.768kHz, 20PPM, Real-Time Clock Module with SPI-Bus Learn More about Micro Crystal rv 8063 c8 rtc modules	Datasheet	1,000Expected 05/02/2027	Cut Tape £1.42 £1.05 £0.934 £0.828 Reel £0.749 View £0.779 £0.771 £0.711 £0.697 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SON-8		900 mV	5.5 V	- 40 C	+ 85 C	RV-8063-C8	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz 1337AGDCGI Renesas Electronics 1: £2.63 291Expected 18/02/2028	Mfr. Part No. 1337AGDCGI Mouser Part No 972-1337AGDCGI	Renesas Electronics	Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz	Datasheet	291Expected 18/02/2028	£2.63 £1.96 £1.80 £1.60 £1.53	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	No Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C	1337AGD	SMD/SMT		Tube
Real Time Clock 1338D-31 REAL TIME CLOCK 1338D-31DVGI Renesas Electronics 1: £2.17 384Expected 18/02/2028	Mfr. Part No. 1338D-31DVGI Mouser Part No 972-1338D-31DVGI	Renesas Electronics	Real Time Clock 1338D-31 REAL TIME CLOCK	Datasheet	384Expected 18/02/2028	£2.17 £1.63 £1.48 £1.33 £1.24	Min.: 1 Mult.: 1										1338			Tube
Real Time Clock 3.0Volt -40 to 85C I2C BUS RX-8035LC:B3 PURE SN Epson Timing 1: £7.51 500Expected 06/11/2026	Mfr. Part No. RX-8035LC:B3 PURE SN Mouser Part No 732-RX-8035LC:B3	Epson Timing	Real Time Clock 3.0Volt -40 to 85C I2C BUS	Datasheet	500Expected 06/11/2026	Cut Tape £7.51 £5.84 £5.43 £4.97 Reel £4.72 View £4.58 £4.49 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	VSOJ-12	Backup Switching	2.4 V	5.5 V	- 40 C	+ 85 C	RX-8035LC	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RX4901CE XB C0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-5ppm 2k TR RX4901CE XB C06 Epson Timing 1: £3.47 1,023Expected 28/12/2026	Mfr. Part No. RX4901CE XB C06 Mouser Part No 732-RX4901CEXBC06	Epson Timing	Real Time Clock RX4901CE XB C0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-5ppm 2k TR Learn More about Epson Timing epson rx8901ce rx4901ce real time clock modules	Datasheet	1,023Expected 28/12/2026	Cut Tape £3.47 £2.63 £2.42 £2.18 View Reel £1.86 £2.07 £2.04 £1.94 £1.86 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.6 V	5.5 V	- 40 C	+ 105 C	RX4901CE	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RX8111CE:B3 REAL TIME CLOCK I2C-BUS 3.0V 23PPM 250TR RX8111CE B3 Epson Timing 1: £2.71 1,750On Order	Mfr. Part No. RX8111CE B3 Mouser Part No 732-RX8111CEB3	Epson Timing	Real Time Clock RX8111CE:B3 REAL TIME CLOCK I2C-BUS 3.0V 23PPM 250TR Learn More about Epson Timing epson rx4111ce rx8111ce rtc modules	Datasheet	1,750On Order On Order Ship Dates Mfr. No: RX8111CE B3 Stock: 0 On Order: 750 Expected 04/11/2026 1,000 Expected 26/04/2027 Factory Lead Time: 20 Weeks	Cut Tape £2.71 £2.03 £1.85 £1.67 Reel £1.49 View £1.44 £1.40 MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX8111CE	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz-DTCXO 3.4ppm I2C-Bus RX8900CE UA0 Epson Timing 1: £2.98 886Expected 26/10/2026	Mfr. Part No. RX8900CE UA0 Mouser Part No 732-RX8900CEUA0	Epson Timing	Real Time Clock 32.768kHz-DTCXO 3.4ppm I2C-Bus Learn More about Epson Timing epson rx8900ce rtc modules	Datasheet	886Expected 26/10/2026	Cut Tape £2.98 £2.25 £2.07 £1.87 £1.79 Reel £1.79 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	2.5 V	5.5 V	- 40 C	+ 85 C	RX8900CE	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR RX8901CE XS A06 Epson Timing 1: £4.53 2,000Expected 07/12/2026	Mfr. Part No. RX8901CE XS A06 Mouser Part No 732-RX8901CEXSA06	Epson Timing	Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR Learn More about Epson Timing epson rx8901ce rx4901ce real time clock modules	Datasheet	2,000Expected 07/12/2026	Cut Tape £4.53 £3.47 £3.20 £2.92 View Reel £2.57 £2.78 £2.75 £2.57 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		No Backup Switching	1.6 V	5.5 V	- 40 C	+ 105 C	RX8901CE	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Real Time Clock TSSOP-8 T&R 2.5K PT7C4563CLEX Diodes Incorporated 2,500: £0.35 17,500Factory Stock Available New Product	Mfr. Part No. PT7C4563CLEX Mouser Part No 621-PT7C4563CLEX New Product	Diodes Incorporated	Real Time Clock Real Time Clock TSSOP-8 T&R 2.5K	Datasheet	17,500Factory Stock Available More Info Available	Reel £0.35	Min.: 2,500 Mult.: 2,500 : 2,500	I2C	BCD	BCD	TSSOP-8		1.3 V	5.5 V	- 40 C	+ 85 C	PT7C4563C	SMD/SMT		Reel
Real Time Clock RX4111CE:B3 REAL TIME CLOCK SPI-BUS 3.0V 23PPM 250TR RX4111CE B3 Epson Timing 1: £2.92 250Expected 03/02/2027	Mfr. Part No. RX4111CE B3 Mouser Part No 732-RX4111CEB3	Epson Timing	Real Time Clock RX4111CE:B3 REAL TIME CLOCK SPI-BUS 3.0V 23PPM 250TR Learn More about Epson Timing epson rx4111ce rx8111ce rtc modules	Datasheet	250Expected 03/02/2027	Cut Tape £2.92 £2.21 £2.03 £1.83 Reel £1.70 View £1.68 £1.61 £1.58 £1.57 MouseReel Available	Min.: 1 Mult.: 1 : 250	Serial 4-Wire, SPI				Backup Switching	1.6 V	5.5 V	- 40 C	+ 85 C	RX4111CE	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 64B SRAM ID MCP79400T-I/MNY Microchip Technology 1: £0.834 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. MCP79400T-I/MNY Mouser Part No 579-MCP79400TIMNY	Microchip Technology	Real Time Clock I2C GP RTCC 64B SRAM ID Learn More about Microchip Technology microchip mcp7940n calendar	Datasheet	Non-Stocked Lead-Time 12 Weeks	Cut Tape £0.834 Reel £0.703	Min.: 1 Mult.: 1 : 3,300													Reel, Cut Tape