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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 (SGD) 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	Packaging
Real Time Clock Serial I2C bus RTC M41T83SQA6F STMicroelectronics 1: $6.15 60In Stock 5,000Expected 29/3/2027	Mfr. Part No. M41T83SQA6F Mouser Part No 511-M41T83SQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	60In Stock 5,000Expected 29/3/2027	Cut Tape $6.15 $4.66 $4.30 $3.81 View Reel $3.40 $3.62 $3.54 $3.40 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: $10.25 159In Stock 1,000Expected 10/5/2027	Mfr. Part No. M41T83ZMY6F Mouser Part No 511-M41T83ZMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	159In Stock 1,000Expected 10/5/2027	Cut Tape $10.25 $7.92 $7.33 $6.69 $6.22 Reel $5.90 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: $13.99 31In Stock 1,000Expected 16/11/2026	Mfr. Part No. M41T93SMY6F Mouser Part No 511-M41T93SMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	31In Stock 1,000Expected 16/11/2026	Cut Tape $13.99 $10.89 $10.12 $8.94 View Reel $8.39 $8.58 $8.40 $8.39 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: $11.30 165In Stock	Mfr. Part No. M41T93SQA6F Mouser Part No 511-M41T93SQA6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	165In Stock	Cut Tape $11.30 $9.30 $8.36 $7.71 Reel $6.43 View $7.04 $6.91 $6.26 Quote 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 I2C GP RTCC 1Kb EE 64B SRAM EUI-48 MCP79411-I/ST Microchip Technology 1: $1.60 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	$1.60 $1.47 $1.44	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: $2.03 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 $2.03 Reel $1.70	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: $2.01 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	$2.01 $1.86 $1.82	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: $2.18 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 $2.18 Reel $1.82 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: $3.21 329In Stock 1,500Expected 23/11/2026	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 23/11/2026	$3.21 $2.38 $2.07 $1.90 View $1.81 $1.75 $1.70 $1.65 $1.58	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: $2.49 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 $2.49 $1.82 $1.66 $1.47 View Reel $1.22 $1.39 $1.34 $1.33 $1.25 $1.22	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: $2.52 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 $2.52 $1.85 $1.69 $1.50 View Reel $1.23 $1.41 $1.34 $1.33 $1.29 $1.23	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: $1.71 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 $1.71 $1.23 $1.05 $0.978 View Reel $0.80 $0.959 $0.948 $0.801 $0.80 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: $1.77 158In 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	158In Stock	Cut Tape $1.77 $1.28 $1.12 $1.01 View Reel $0.804 $0.979 $0.959 $0.941 $0.804 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: $2.42 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 $2.42 $1.78 $1.62 $1.44 View Reel $1.21 $1.35 $1.29 $1.21 MouseReel Available	Min.: 1 Mult.: 1 : 2,500												Reel, Cut Tape, MouseReel
Real Time Clock Real-time Clock IC PT7C4372ALEX Diodes Incorporated 1: $1.56 25In Stock 2,500Expected 2/12/2026	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 2/12/2026	Cut Tape $1.56 $1.12 $0.948 $0.819 View Reel $0.699 $0.79 $0.774 $0.755 $0.699 MouseReel Available	Min.: 1 Mult.: 1 : 2,500												Reel, Cut Tape, MouseReel
Real Time Clock RTCs 3030 QFN-16 SPI HH:MM:SS:hh YY-MM-DD-dd AB0815-T3 ABRACON 1: $4.76 82In Stock 3,000Expected 15/3/2027	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 15/3/2027	Cut Tape $4.76 $3.58 $3.28 $2.90 View Reel $2.30 $2.57 $2.49 $2.38 $2.30 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: $4.76 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 3/12/2026 9,000 Expected 7/12/2026 12,000 Expected 2/8/2027 Factory Lead Time: 28 Weeks	Cut Tape $4.76 $3.58 $3.16 $2.84 View Reel $2.34 $2.61 $2.53 $2.41 $2.34 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: $4.76 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 $4.76 $3.58 $3.28 $2.84 View Reel $2.15 $2.56 $2.48 $2.39 $2.15 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
Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB DP8570AV/NOPB Texas Instruments 1: $72.20 7In Stock	Mfr. Part No. DP8570AV/NOPB Mouser Part No 926-DP8570AV/NOPB	Texas Instruments	Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB	Datasheet	7In Stock	$72.20 $59.15 $55.26 $52.58 View $51.27 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	PLCC-28	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	DP8570A	SMD/SMT	Tube
Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR ISL12020MIRZ-T7A Renesas / Intersil 1: $15.86 160In Stock 250Expected 30/10/2026	Mfr. Part No. ISL12020MIRZ-T7A Mouser Part No 968-ISL12020MIRZ-T7A	Renesas / Intersil	Real Time Clock LDAL TIME CLK & TEMP COMPENSATED CR	Datasheet	160In Stock 250Expected 30/10/2026	Cut Tape $15.86 $12.39 $11.52 $10.57 Reel $10.06 View $9.60 $9.41 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	DFN-20	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	ISL12020	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L ISL12022IBZ-T7A Renesas / Intersil 1: $7.24 47In Stock 2,500On Order	Mfr. Part No. ISL12022IBZ-T7A Mouser Part No 968-ISL12022IBZ-T7A	Renesas / Intersil	Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L	Datasheet	47In Stock 2,500On Order On Order Ship Dates Mfr. No: ISL12022IBZ-T7A Stock: 47 Can Dispatch Immediately On Order: 1,000 Expected 26/7/2027 1,500 Expected 30/7/2027 Factory Lead Time: 36 Weeks	Cut Tape $7.24 $5.51 $5.09 $4.61 Reel $4.38 View $4.20 $4.12 $4.05 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	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 REAL TIME CLK W/ ALARM DS1337 COMP ISL12057IBZ-T Renesas / Intersil 1: $3.88 97In Stock 17,500On Order	Mfr. Part No. ISL12057IBZ-T Mouser Part No 968-ISL12057IBZ-T	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP	Datasheet	97In Stock 17,500On Order On Order Ship Dates Mfr. No: ISL12057IBZ-T Stock: 97 Can Dispatch Immediately On Order: 7,500 Expected 16/4/2027 10,000 Expected 14/6/2027 Factory Lead Time: 36 Weeks	Cut Tape $3.88 $2.90 $2.65 $2.38 Reel $2.09 View $2.26 $2.18 $2.14 $1.97 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	No Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C	ISL12057	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP ISL12057IUZ Renesas / Intersil 1: $4.04 751In Stock 6,450On Order	Mfr. Part No. ISL12057IUZ Mouser Part No 968-ISL12057IUZ	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP	Datasheet	751In Stock 6,450On Order On Order Ship Dates Mfr. No: ISL12057IUZ Stock: 751 Can Dispatch Immediately On Order: 3,100 Expected 25/1/2027 3,350 Expected 8/3/2027 Factory Lead Time: 36 Weeks	$4.04 $3.02 $2.64 $2.46 View $2.33 $2.24 $2.14 $2.08 $2.04	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	MSOP-8	No Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C	ISL12057	SMD/SMT	Tube
Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS ISL12058IBZ Renesas / Intersil 1: $3.88 566In Stock	Mfr. Part No. ISL12058IBZ Mouser Part No 968-ISL12058IBZ	Renesas / Intersil	Real Time Clock REAL TIME CLK W/ ALARM & TIMR FUNCTNS	Datasheet	566In Stock	$3.88 $2.90 $2.65 $2.38 View $2.26 $2.19 $2.05 $1.99 $1.96	Min.: 1 Mult.: 1	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	No Backup Switching	1.8 V	3.6 V	- 40 C	+ 85 C	ISL12058	SMD/SMT	Tube
Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz 1337AGDVGI Renesas Electronics 1: $3.94 5In Stock 768Expected 10/1/2028	Mfr. Part No. 1337AGDVGI Mouser Part No 972-1337AGDVGI	Renesas Electronics	Real Time Clock RTC I2c Serial IC 1.8 to 5.5V 32kHz	Datasheet	5In Stock 768Expected 10/1/2028	$3.94 $2.95	Min.: 1 Mult.: 1				MSOP-8						1337AGD	SMD/SMT	Tube