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STMicroelectronics Real Time Clock

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	RTC Bus Interface	Date Format	Time Format	Memory Size	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 M41T82SM6F STMicroelectronics 1: ¥541.5 1,653In Stock 5,000Expected 9/28/2026	Mfr. Part # M41T82SM6F Mouser Part # 511-M41T82SM6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	1,653In Stock 5,000Expected 9/28/2026	Cut Tape ¥541.5 ¥405.3 ¥372.1 ¥333.9 View Reel ¥280.7 ¥315.6 ¥307.3 ¥299 ¥280.7 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	32 B	SOIC-8	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T82	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial I2C bus RTC M41T83SQA6F STMicroelectronics 1: ¥734.2 2,750In Stock	Mfr. Part # M41T83SQA6F Mouser Part # 511-M41T83SQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	2,750In Stock	Cut Tape ¥734.2 ¥554.8 ¥509.9 ¥461.8 Reel ¥393.7 View ¥438.5 ¥431.9 ¥383.7 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	32 B	QFN-16	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T83	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock SPI RTC 32.768 kHz 365nA 2.0V to 5.5V M41T93RQA6F STMicroelectronics 1: ¥1,391.9 1,083In Stock	Mfr. Part # M41T93RQA6F Mouser Part # 511-M41T93RQA6F	STMicroelectronics	Real Time Clock SPI RTC 32.768 kHz 365nA 2.0V to 5.5V	Datasheet	1,083In Stock	Cut Tape ¥1,391.9 ¥1,073 ¥993.3 ¥906.9 Reel ¥812.2 View ¥838.8 ¥800.6 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	32 B	QFN-16	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial SPI bus RTC M41T93ZMY6F STMicroelectronics 1: ¥1,772.3 757In Stock	Mfr. Part # M41T93ZMY6F Mouser Part # 511-M41T93ZMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	757In Stock	Cut Tape ¥1,772.3 ¥1,383.6 ¥1,287.3 ¥1,181 View Reel ¥1,071.3 ¥1,129.5 ¥1,117.9 ¥1,071.3 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	32 B	SOX-18	Backup Switching	2.38 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T94MH6F STMicroelectronics 1: ¥1,842 1,226In Stock 1,872Expected 10/13/2026	Mfr. Part # M41T94MH6F Mouser Part # 511-M41T94MH6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	1,226In Stock 1,872Expected 10/13/2026	Cut Tape ¥1,842 ¥1,455 ¥1,353.7 ¥1,242.4 Reel ¥1,089.6 View ¥1,204.2 ¥1,132.8 ¥1,054.7 MouseReel Available	Min.: 1 Mult.: 1 : 936	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	64 B	SOX-28	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T94	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T94MQ6F STMicroelectronics 1: ¥906.9 2,959In Stock 5,000Expected 4/28/2027	Mfr. Part # M41T94MQ6F Mouser Part # 511-M41T94MQ6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	2,959In Stock 5,000Expected 4/28/2027	Cut Tape ¥906.9 ¥674.4 ¥621.2 ¥563.1 View Reel ¥496.6 ¥536.5 ¥519.9 ¥513.2 ¥496.6 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	64 B	SO-16	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T94	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 16K (2Kx8) 150ns M48T02-150PC1 STMicroelectronics 1: ¥5,198.9 641In Stock	Mfr. Part # M48T02-150PC1 Mouser Part # 511-M48T0215PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 150ns	Datasheet	641In Stock	¥5,198.9 ¥4,132.6 ¥3,778.8 ¥3,579.5 ¥3,443.3	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	2 kB	PCDIP-24	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T02	Through Hole	Tube
Real Time Clock 16K (2Kx8) 70ns M48T02-70PC1 STMicroelectronics 1: ¥4,978 443In Stock	Mfr. Part # M48T02-70PC1 Mouser Part # 511-M48T0270PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 70ns	Datasheet	443In Stock	¥4,978 ¥3,953.2 ¥3,730.6 ¥3,463.2 View ¥3,341.9 ¥3,224 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	2 kB	PCDIP-24	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T02	Through Hole	Tube
Real Time Clock 64K (8Kx8) 150ns M48T08-150PC1 STMicroelectronics 1: ¥6,494.5 339In Stock 240Expected 10/27/2026	Mfr. Part # M48T08-150PC1 Mouser Part # 511-M48T0815PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 150ns	Datasheet	339In Stock 240Expected 10/27/2026	¥6,494.5 ¥5,233.8 ¥4,913.2 ¥4,740.5 View ¥4,411.6 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	8 kB	PCDIP-28	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T08	Through Hole	Tube
Real Time Clock 16K (2Kx8) 150ns M48T12-150PC1 STMicroelectronics 1: ¥7,321.7 386In Stock 560Expected 10/13/2026	Mfr. Part # M48T12-150PC1 Mouser Part # 511-M48T1215PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 150ns	Datasheet	386In Stock 560Expected 10/13/2026	¥7,321.7 ¥5,913.2 ¥5,632.5 ¥5,459.7 View ¥5,247.1 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	8 kB	PCDIP-24	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	M48T12	Through Hole	Tube
Real Time Clock 256K (32Kx8) 70ns M48T35-70PC1 STMicroelectronics 1: ¥9,074 239In Stock	Mfr. Part # M48T35-70PC1 Mouser Part # 511-M48T3570PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	239In Stock	¥9,074 ¥7,383.1 ¥6,933 ¥6,541 View ¥6,537.7 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	32 kB	PCDIP-28	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T35	Through Hole	Tube
Real Time Clock 256K (32Kx8) 70ns M48T35Y-70MH1F STMicroelectronics 1: ¥4,019.6 520In Stock	Mfr. Part # M48T35Y-70MH1F Mouser Part # 511-M48T35Y-70MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	520In Stock	Cut Tape ¥4,019.6 ¥3,219 ¥3,018 ¥2,798.8 View Reel ¥2,567.9 ¥2,739 ¥2,569.6 ¥2,567.9 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	256 kB	SOX-28	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	M48T35Y	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 64K (8Kx8) 70ns M48T58-70PC1 STMicroelectronics 1: ¥7,949.5 191In Stock	Mfr. Part # M48T58-70PC1 Mouser Part # 511-M48T5870PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	191In Stock	¥7,949.5 ¥6,467.9 ¥6,077.6 ¥5,944.7 View ¥5,592.6 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	8 kB	PCDIP-28	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T58	Through Hole	Tube
Real Time Clock 64K (8Kx8) 70ns M48T58Y-70PC1 STMicroelectronics 1: ¥6,247 180In Stock 240Expected 10/2/2026	Mfr. Part # M48T58Y-70PC1 Mouser Part # 511-M48T58Y70PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	180In Stock 240Expected 10/2/2026	¥6,247 ¥5,039.5 ¥4,730.5 ¥4,458.1 View ¥4,297 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	8 kB	PCDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	M48T58Y	Through Hole	Tube
Real Time Clock Serial 512 (64x8) M41ST85WMX6TR STMicroelectronics 1: ¥1,797.2 22In Stock 2,000Expected 7/12/2027	Mfr. Part # M41ST85WMX6TR Mouser Part # 511-M41ST85WMX6TR	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	22In Stock 2,000Expected 7/12/2027	Cut Tape ¥1,797.2 ¥1,403.5 ¥1,292.3 ¥1,186 View Reel ¥1,088 ¥1,134.5 ¥1,122.8 ¥1,088 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	64 B	SOX-28	Backup Switching	2.7 V	3.6 V	- 40 C	+ 85 C	M41ST85W	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T81M6F STMicroelectronics 1: ¥504.9 302In Stock 5,000Expected 8/23/2027	Mfr. Part # M41T81M6F Mouser Part # 511-M41T81M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	302In Stock 5,000Expected 8/23/2027	Cut Tape ¥504.9 ¥378.7 ¥347.1 ¥312.3 View Reel ¥247.5 ¥295.7 ¥280.7 ¥267.4 ¥247.5 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	20 B	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T81	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial I2C bus RTC M41T83RMY6F STMicroelectronics 1: ¥913.6 334In Stock	Mfr. Part # M41T83RMY6F Mouser Part # 511-M41T83RMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	334In Stock	Cut Tape ¥913.6 ¥696 ¥641.1 ¥581.4 Reel ¥528.2 View ¥553.1 ¥536.5 ¥521.6 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)	32 B	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: ¥847.1 249In Stock 1,000Expected 11/9/2026	Mfr. Part # M41T83SMY6F Mouser Part # 511-M41T83SMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	249In Stock 1,000Expected 11/9/2026	Cut Tape ¥847.1 ¥646.1 ¥594.6 ¥536.5 Reel ¥438.5 View ¥509.9 ¥504.9 ¥431.9 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)	32 B	SOX-18	Backup Switching	3 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: ¥1,629.4 63In Stock 1,000Expected 11/16/2026	Mfr. Part # M41T93SMY6F Mouser Part # 511-M41T93SMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	63In Stock 1,000Expected 11/16/2026	Cut Tape ¥1,629.4 ¥1,269 ¥1,179.3 ¥1,058.1 View Reel ¥978.3 ¥1,014.9 ¥998.3 ¥978.3 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SPI	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	32 B	SOX-18	Backup Switching	3 V	5.5 V	- 40 C	+ 85 C	M41T93	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 256K (32Kx8) 70ns M48T35Y-70PC1 STMicroelectronics 1: ¥8,491 4In Stock 480Expected 10/26/2026	Mfr. Part # M48T35Y-70PC1 Mouser Part # 511-M48T35Y70PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	4In Stock 480Expected 10/26/2026	¥8,491 ¥6,876.5 ¥6,451.3 ¥6,140.7 ¥5,840.1	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	32 kB	PCDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	M48T35Y	Through Hole	Tube
Real Time Clock Battery Swtchovr-RTC M41T83RQA6F STMicroelectronics 1: ¥769 19,285On Order	Mfr. Part # M41T83RQA6F Mouser Part # 511-M41T83RQA6F	STMicroelectronics	Real Time Clock Battery Swtchovr-RTC	Datasheet	19,285On Order On Order Ship Dates Mfr. #: M41T83RQA6F Stock: 0 On Order: 285 Expected 12/16/2026 8,000 Expected 1/11/2027 11,000 Expected 6/3/2027 Factory Lead-Time: 30 Weeks	Cut Tape ¥769 ¥591.3 ¥541.5 ¥498.3 View Reel ¥423.6 ¥475 ¥468.4 ¥423.6 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	32 B	QFN-16	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T83	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial Access Real Time Clock M41T81SMY6F STMicroelectronics 1: ¥1,674.3 2,000On Order	Mfr. Part # M41T81SMY6F Mouser Part # 511-M41T81SMY6F	STMicroelectronics	Real Time Clock Serial Access Real Time Clock	Datasheet	2,000On Order	Cut Tape ¥1,674.3 ¥1,305.5 ¥1,212.5 ¥1,111.2 ¥1,071.3 Reel ¥1,009.9 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	20 B	SOX-18	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T81S	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 256K (32Kx8) 70ns M48T37Y-70MH1F STMicroelectronics 1: ¥3,406.7 28In Stock	Mfr. Part # M48T37Y-70MH1F Mouser Part # 511-M48T37Y-70MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	28In Stock	Cut Tape ¥3,406.7 ¥2,928.3 ¥2,737.3 ¥2,423.4 View Reel ¥2,239 ¥2,363.6 ¥2,242.4 ¥2,239 Quote MouseReel Available	Min.: 1 Mult.: 1 : 936	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	256 kB	SOIC-44	Backup Switching	4.5 V	5.5 V	0 C	+ 70 C	M48T37Y	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock SERIAL RTC W/AUDIO M41T00AUDD1F STMicroelectronics 3,000: ¥1,186 Non-Stocked Lead-Time 30 Weeks	Mfr. Part # M41T00AUDD1F Mouser Part # 511-M41T00AUDD1F	STMicroelectronics	Real Time Clock SERIAL RTC W/AUDIO	Datasheet	Non-Stocked Lead-Time 30 Weeks	Reel ¥1,186	Min.: 3,000 Mult.: 3,000 : 3,000	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	8 B	DFN-16	Backup Switching	3 V	3.6 V	0 C	+ 70 C	M41T00AUD	SMD/SMT	Reel
Real Time Clock Serial I2C bus RTC M41T83ZQA6F STMicroelectronics 1: ¥1,164.4 Non-Stocked Lead-Time 30 Weeks	Mfr. Part # M41T83ZQA6F Mouser Part # 511-M41T83ZQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	Non-Stocked Lead-Time 30 Weeks	Cut Tape ¥1,164.4 ¥916.9 ¥828.8 ¥755.8 View Reel ¥681 ¥720.9 ¥717.6 ¥681 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Serial		HH:MM:SS:hh (12 hr, 24 hr)	32 B		Backup Switching	2.38 V	5.5 V	- 40 C	+ 85 C	M41T83	SMD/SMT	Reel, Cut Tape, MouseReel

M41ST85W
M41ST87W
M41T0
M41T00
M41T00AUD
M41T00S
M41T01
M41T11
M41T56
M41T80
M41T81
M41T81S
M41T82
M41T83
M41T93
M41T94
M48T02
M48T08
M48T08Y
M48T12