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Real Time Clock

Real Time Clocks are in stock with same-day shipping at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many real time clock manufacturers including Analog Devices, Epson, Microchip, Micro Crystal, NXP, Renesas Electronics, STMicroelectronics & more.
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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) 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 Serial I2C bus RTC M41T83RMY6F STMicroelectronics 1: $5.50 334In Stock	Mfr. Part No. M41T83RMY6F Mouser Part No 511-M41T83RMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	334In Stock	Cut Tape $5.50 $4.19 $3.86 $3.50 Reel $3.18 View $3.33 $3.23 $3.14 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, 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	M41T83	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Serial I2C bus RTC M41T83SMY6F STMicroelectronics 1: $5.21 66In Stock 1,000Expected 23/11/2026	Mfr. Part No. M41T83SMY6F Mouser Part No 511-M41T83SMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	66In Stock 1,000Expected 23/11/2026	Cut Tape $5.21 $3.96 $3.65 $3.31 Reel $2.48 View $3.07 $3.04 $2.45 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOX-18	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T83	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Serial I2C bus RTC M41T83SQA6F STMicroelectronics 1: $4.70 60In Stock 5,000Expected 17/05/2027	Mfr. Part No. M41T83SQA6F Mouser Part No 511-M41T83SQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	60In Stock 5,000Expected 17/05/2027	Cut Tape $4.70 $3.56 $3.28 $2.90 View Reel $2.55 $2.76 $2.71 $2.55 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	QFN-16	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T83	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Serial I2C bus RTC M41T83ZMY6F STMicroelectronics 1: $7.54 159In Stock 1,000Expected 10/05/2027	Mfr. Part No. M41T83ZMY6F Mouser Part No 511-M41T83ZMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	159In Stock 1,000Expected 10/05/2027	Cut Tape $7.54 $5.82 $5.39 $4.92 $4.57 Reel $4.34 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	2.38 V	5.5 V	- 40 C	+ 85 C	M41T83	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Serial SPI bus RTC M41T93SMY6F STMicroelectronics 1: $10.29 41In Stock 1,000Expected 16/11/2026	Mfr. Part No. M41T93SMY6F Mouser Part No 511-M41T93SMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	41In Stock 1,000Expected 16/11/2026	Cut Tape $10.29 $8.01 $7.44 $6.57 View Reel $6.17 $6.31 $6.18 $6.17 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOX-18	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Serial SPI bus RTC M41T93SQA6F STMicroelectronics 1: $8.85 165In Stock	Mfr. Part No. M41T93SQA6F Mouser Part No 511-M41T93SQA6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	165In Stock	Cut Tape $8.85 $6.84 $6.34 $5.79 Reel $4.84 View $5.43 $5.12 $4.74 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	QFN-16	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 256K (32Kx8) 100ns M48T37V-10MH1F STMicroelectronics 1: $22.51 230In Stock	Mfr. Part No. M48T37V-10MH1F Mouser Part No 511-M48T37V-10MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 100ns	Datasheet	230In Stock	Cut Tape $22.51 $20.25 $17.67 $16.80 Reel $14.99 View Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-44	Backup Switching	3 V	3.6 V	0 C	+ 70 C	M48T37V	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 MCP79411-I/ST Microchip Technology 1: $1.18 498In Stock	Mfr. Part No. MCP79411-I/ST Mouser Part No 579-MCP79411IST	Microchip Technology	Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp794xx calendars	Datasheet	498In Stock	$1.18 $1.08 $1.06	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	1.8 V	5.5 V	- 40 C	+ 85 C		SMD/SMT		Tube
Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID MCP79520T-I/MN Microchip Technology 1: $1.49 2,905In Stock	Mfr. Part No. MCP79520T-I/MN Mouser Part No 579-MCP79520T-I/MN	Microchip Technology	Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM ID Learn More about Microchip Technology microchip mcp795xx	Datasheet	2,905In Stock	Cut Tape $1.49 Reel $1.25	Min.: 1 Mult.: 1 : 3,300													Reel, Cut Tape
Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48 MCP79521-I/MS Microchip Technology 1: $1.48 150In Stock	Mfr. Part No. MCP79521-I/MS Mouser Part No 579-MCP79521-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp795xx	Datasheet	150In Stock	$1.48 $1.37 $1.34	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 SPI GP RTCC 2Kb EE 64B SRAM EUI-48 MCP79521T-I/MS Microchip Technology 1: $1.60 730In Stock	Mfr. Part No. MCP79521T-I/MS Mouser Part No 579-MCP79521T-I/MS	Microchip Technology	Real Time Clock SPI GP RTCC 2Kb EE 64B SRAM EUI-48 Learn More about Microchip Technology microchip mcp795xx	Datasheet	730In Stock	Cut Tape $1.60 Reel $1.34 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial, I2C, SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)		Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C		SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock SAMAY A 595-BQ32002D R A 595-BQ32002DR A A 595-BQ32002DR BQ32002D Texas Instruments 1: $2.36 329In Stock 1,500Expected 19/11/2026	Mfr. Part No. BQ32002D Mouser Part No 595-BQ32002D	Texas Instruments	Real Time Clock SAMAY A 595-BQ32002D R A 595-BQ32002DR A A 595-BQ32002DR	Datasheet	329In Stock 1,500Expected 19/11/2026	$2.36 $1.75 $1.52 $1.40 View $1.33 $1.29 $1.25 $1.21 $1.16	Min.: 1 Mult.: 1	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	3 V	3.6 V	- 40 C	+ 85 C	BQ32002	SMD/SMT		Tube
Real Time Clock 3WIRE REAL TIME CLCK S-35192A-I8T1U ABLIC 1: $1.83 4,796In Stock	Mfr. Part No. S-35192A-I8T1U Mouser Part No 628-S-35192A-I8T1U	ABLIC	Real Time Clock 3WIRE REAL TIME CLCK	Datasheet	4,796In Stock	Cut Tape $1.83 $1.34 $1.22 $1.08 View Reel $0.898 $1.02 $0.984 $0.979 $0.918 $0.898	Min.: 1 Mult.: 1 : 5,000				SNT-A-8						S-35192			Reel, Cut Tape
Real Time Clock Real Time Clock S-35390A-J8T1U ABLIC 1: $1.85 510In Stock	Mfr. Part No. S-35390A-J8T1U Mouser Part No 628-S-35390A-J8T1U	ABLIC	Real Time Clock Real Time Clock Learn More about ABLIC seiko s 35390a clocks	Datasheet	510In Stock	Cut Tape $1.85 $1.36 $1.24 $1.10 View Reel $0.908 $1.04 $0.985 $0.98 $0.946 $0.908	Min.: 1 Mult.: 1 : 4,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOP-8	No Backup Switching	1.3 V	5.5 V	- 40 C	+ 85 C	S-35390	SMD/SMT		Reel, Cut Tape
Real Time Clock 1.8V-5.5V Real Time Clock 12C bus PT7C4337UEX Diodes Incorporated 1: $1.26 1,732In Stock	Mfr. Part No. PT7C4337UEX Mouser Part No 729-PT7C4337UEX	Diodes Incorporated	Real Time Clock 1.8V-5.5V Real Time Clock 12C bus Learn More about Diodes Incorporated diodes timing solutions	Datasheet	1,732In Stock	Cut Tape $1.26 $0.903 $0.773 $0.719 View Reel $0.588 $0.705 $0.697 $0.589 $0.588 MouseReel Available	Min.: 1 Mult.: 1 : 2,500													Reel, Cut Tape, MouseReel
Real Time Clock 1.8V-5.5V Real Time Clock 12C bus PT7C4337ZEEX Diodes Incorporated 1: $1.30 154In Stock	Mfr. Part No. PT7C4337ZEEX Mouser Part No 729-PT7C4337ZEEX	Diodes Incorporated	Real Time Clock 1.8V-5.5V Real Time Clock 12C bus Learn More about Diodes Incorporated diodes timing solutions	Datasheet	154In Stock	Cut Tape $1.30 $0.938 $0.82 $0.745 View Reel $0.591 $0.72 $0.705 $0.692 $0.591 MouseReel Available	Min.: 1 Mult.: 1 : 3,000													Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real-time Clock module PT7C43390LEX Diodes Incorporated 1: $1.78 324In Stock	Mfr. Part No. PT7C43390LEX Mouser Part No 729-PT7C43390LEX	Diodes Incorporated	Real Time Clock 2-Wire Real-time Clock module Learn More about Diodes Incorporated diodes timing solutions	Datasheet	324In Stock	Cut Tape $1.78 $1.31 $1.19 $1.06 View Reel $0.888 $0.99 $0.952 $0.947 $0.888 MouseReel Available	Min.: 1 Mult.: 1 : 2,500													Reel, Cut Tape, MouseReel
Real Time Clock Real-time Clock IC PT7C4372ALEX Diodes Incorporated 1: $1.15 25In Stock 2,500Expected 02/12/2026	Mfr. Part No. PT7C4372ALEX Mouser Part No 729-PT7C4372ALEX	Diodes Incorporated	Real Time Clock Real-time Clock IC Learn More about Diodes Incorporated diodes timing solutions	Datasheet	25In Stock 2,500Expected 02/12/2026	Cut Tape $1.15 $0.827 $0.697 $0.602 View Reel $0.514 $0.581 $0.569 $0.555 $0.514 MouseReel Available	Min.: 1 Mult.: 1 : 2,500													Reel, Cut Tape, MouseReel
Real Time Clock RX8130CE:B6 REAL TIME CLOCK +/-23PPM 2K TR RX8130CE B6 Epson Timing 1: $1.39 83,218In Stock	Mfr. Part No. RX8130CE B6 Mouser Part No 732-RX8130CEB6	Epson Timing	Real Time Clock RX8130CE:B6 REAL TIME CLOCK +/-23PPM 2K TR	Datasheet	83,218In Stock	Cut Tape $1.39 $1.00 $0.905 $0.80 Reel $0.658 View $0.749 $0.719 $0.702 $0.651 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)		Backup Switching	1.25 V	5.5 V	- 40 C	+ 85 C	RX8130CE	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock Automotive RTC IC with 400 kHz I2C interface in TSSOP8 package. PCA85073ADP/Q900Z NXP Semiconductors 1: $1.65 179In Stock 32,500On Order	Mfr. Part No. PCA85073ADP/Q900Z Mouser Part No 771-PCA85073ADPQ900Z	NXP Semiconductors	Real Time Clock Automotive RTC IC with 400 kHz I2C interface in TSSOP8 package. Learn More about NXP Semiconductors nxp pca85073a cmos rtc	Datasheet	179In Stock 32,500On Order On Order Ship Dates Mfr. No: PCA85073ADP/Q900Z Stock: 179 Can Dispatch Immediately On Order: 17,500 Expected 16/02/2027 15,000 Expected 22/03/2027 Factory Lead Time: 27 Weeks	Cut Tape $1.65 $1.20 $1.09 $0.96 Reel $0.801 View $0.902 $0.866 $0.856 $0.791 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TSSOP-8	No Backup Switching	900 mV	5.5 V	- 40 C	+ 105 C	PCA85073A	SMD/SMT	AEC-Q100	Reel, Cut Tape, MouseReel
Real Time Clock RTC IC with 400 kHz I2C interface featuring 64 byte SRAM in TSSOP8 package. PCF85363ATT/AJ NXP Semiconductors 1: $1.70 173In Stock 12,500On Order	Mfr. Part No. PCF85363ATT/AJ Mouser Part No 771-PCF85363ATT/AJ	NXP Semiconductors	Real Time Clock RTC IC with 400 kHz I2C interface featuring 64 byte SRAM in TSSOP8 package. Learn More about NXP Semiconductors nxp pcf85063 clocks	Datasheet	173In Stock 12,500On Order On Order Ship Dates Mfr. No: PCF85363ATT/AJ Stock: 173 Can Dispatch Immediately On Order: 7,500 Pending 5,000 Expected 03/05/2027 Factory Lead Time: 27 Weeks	Cut Tape $1.70 $1.24 $1.13 $0.995 View Reel $0.812 $0.935 $0.898 $0.887 $0.812 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	TSSOP-8	Backup Switching	900 mV	5.5 V	- 40 C	+ 85 C	PCF85363A	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RTC IC with 400 kHz I2C interface in TSSOP8 package. PCF8563TS/5,118 NXP Semiconductors 1: $1.90 383In Stock 15,000On Order	Mfr. Part No. PCF8563TS/5,118 Mouser Part No 771-PCF8563TS/5118	NXP Semiconductors	Real Time Clock RTC IC with 400 kHz I2C interface in TSSOP8 package.	Datasheet	383In Stock 15,000On Order On Order Ship Dates Mfr. No: PCF8563TS/5,118 Stock: 383 Can Dispatch Immediately On Order: 7,500 Pending 7,500 Expected 28/10/2026 Factory Lead Time: 27 Weeks	Cut Tape $1.90 $1.40 $1.28 $1.14 View Reel $0.938 $1.07 $1.04 $1.03 $0.938 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	TSSOP-8	No Backup Switching	1 V	5.5 V	- 40 C	+ 85 C	PCF8563	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock RTCs 3030 QFN-16 SPI HH:MM:SS:hh YY-MM-DD-dd AB0815-T3 ABRACON 1: $3.50 82In Stock 3,000Expected 15/03/2027	Mfr. Part No. AB0815-T3 Mouser Part No 815-AB0815-T3	ABRACON	Real Time Clock RTCs 3030 QFN-16 SPI HH:MM:SS:hh YY-MM-DD-dd Learn More about ABRACON ab08xx	Datasheet	82In Stock 3,000Expected 15/03/2027	Cut Tape $3.50 $2.63 $2.41 $2.13 View Reel $1.69 $1.89 $1.83 $1.75 $1.69 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	QFN-16	Backup Switching	1.7 V	3.6 V	- 40 C	+ 85 C	AB08x5	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768 KHZ AB1805-T3 ABRACON 1: $3.50 14In Stock 24,000On Order	Mfr. Part No. AB1805-T3 Mouser Part No 815-AB1805-T3	ABRACON	Real Time Clock 32.768 KHZ Learn More about ABRACON ab08xx	Datasheet	14In Stock 24,000On Order On Order Ship Dates Mfr. No: AB1805-T3 Stock: 14 Can Dispatch Immediately On Order: 3,000 Expected 03/12/2026 9,000 Expected 07/12/2026 12,000 Expected 02/08/2027 Factory Lead Time: 28 Weeks	Cut Tape $3.50 $2.63 $2.41 $2.13 View Reel $1.71 $1.90 $1.84 $1.77 $1.71 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	QFN-16	Backup Switching	1.7 V	3.6 V	- 40 C	+ 85 C	AB18x5	SMD/SMT		Reel, Cut Tape, MouseReel
Real Time Clock 32.768 KHZ AB1815-T3 ABRACON 1: $3.50 82In Stock 3,000Expected 11/12/2026	Mfr. Part No. AB1815-T3 Mouser Part No 815-AB1815-T3	ABRACON	Real Time Clock 32.768 KHZ Learn More about ABRACON ab08xx	Datasheet	82In Stock 3,000Expected 11/12/2026	Cut Tape $3.50 $2.63 $2.41 $2.17 View Reel $1.58 $2.05 $1.82 $1.76 $1.58 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	QFN-16	Backup Switching	1.7 V	3.6 V	- 40 C	+ 85 C	AB18x5	SMD/SMT		Reel, Cut Tape, MouseReel