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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.	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 512 (64x8) M41T94MQ6F STMicroelectronics 1: ¥910.2 2,659In Stock 5,000Expected 4/28/2027	Mfr. Part # M41T94MQ6F Mouser Part # 511-M41T94MQ6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	2,659In Stock 5,000Expected 4/28/2027	Cut Tape ¥910.2 ¥694.3 ¥641.1 ¥581.4 View Reel ¥500 ¥553.1 ¥541.5 ¥536.5 ¥500 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	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 645In Stock	Mfr. Part # M48T02-150PC1 Mouser Part # 511-M48T0215PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 150ns	Datasheet	645In 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)	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 430In Stock	Mfr. Part # M48T02-70PC1 Mouser Part # 511-M48T0270PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 70ns	Datasheet	430In 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)	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 218In Stock 480Expected 10/29/2026	Mfr. Part # M48T08-150PC1 Mouser Part # 511-M48T0815PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 150ns	Datasheet	218In Stock 480Expected 10/29/2026	¥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)	PCDIP-28	Integrated Battery	4.75 V	5.5 V	0 C	+ 70 C	M48T08	Through Hole	Tube
Real Time Clock 256K (32Kx8) 70ns M48T35-70PC1 STMicroelectronics 1: ¥9,074 236In Stock	Mfr. Part # M48T35-70PC1 Mouser Part # 511-M48T3570PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	236In 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)	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)	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 179In Stock	Mfr. Part # M48T58-70PC1 Mouser Part # 511-M48T5870PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	179In 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)	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: ¥6,202.2 418In Stock	Mfr. Part # M48T58Y-70PC1 Mouser Part # 511-M48T58Y70PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	418In Stock	¥6,202.2 ¥4,994.6 ¥4,685.7 ¥4,451.5 View ¥4,248.8 Quote	Min.: 1 Mult.: 1	Parallel	YY-MM-DD-dd	HH:MM:SS (24 hr)	PCDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	M48T58Y	Through Hole	Tube
Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc M41ST87WSS6F STMicroelectronics 1: ¥1,290.6 23In Stock 1,350On Order	Mfr. Part # M41ST87WSS6F Mouser Part # 511-M41ST87WSS6F	STMicroelectronics	Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc	Datasheet	23In Stock 1,350On Order	Cut Tape ¥1,290.6 ¥996.6 ¥921.9 ¥842.1 Reel ¥722.5 View ¥790.6 ¥789 ¥686 MouseReel Available	Min.: 1 Mult.: 1 : 1,350	Serial 2-Wire, I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SSOP-20	Backup Switching	2.7 V	3.6 V	- 40 C	+ 85 C	M41ST87W	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T81M6F STMicroelectronics 1: ¥504.9 44In Stock 5,000Expected 8/23/2027	Mfr. Part # M41T81M6F Mouser Part # 511-M41T81M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	44In 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)	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T81	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock 2.0-5.5V 512 (64x8) M41T81SM6F STMicroelectronics 1: ¥480 94In Stock 25,000On Order	Mfr. Part # M41T81SM6F Mouser Part # 511-M41T81SM6F	STMicroelectronics	Real Time Clock 2.0-5.5V 512 (64x8)	Datasheet	94In Stock 25,000On Order On Order Ship Dates Mfr. #: M41T81SM6F Stock: 94 Can Ship Immediately On Order: 7,500 Expected 10/29/2026 7,500 Expected 7/19/2027 10,000 Expected 10/18/2027 Factory Lead-Time: 30 Weeks	Cut Tape ¥480 ¥357.1 ¥325.6 ¥292.3 View Reel ¥249.2 ¥275.7 ¥270.7 ¥255.8 ¥249.2 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS:hh (12 hr, 24 hr)	SOIC-8	Backup Switching	2.7 V	5.5 V	- 40 C	+ 85 C	M41T81S	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)	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 240In Stock 1,000Expected 11/4/2026	Mfr. Part # M41T83SMY6F Mouser Part # 511-M41T83SMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	240In Stock 1,000Expected 11/4/2026	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)	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: ¥780.7 60In Stock 5,000Expected 5/10/2027	Mfr. Part # M41T83SQA6F Mouser Part # 511-M41T83SQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	60In Stock 5,000Expected 5/10/2027	Cut Tape ¥780.7 ¥591.3 ¥544.8 ¥481.7 View Reel ¥423.6 ¥458.4 ¥450.1 ¥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)	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: ¥1,252.4 159In Stock 1,000Expected 5/10/2027	Mfr. Part # M41T83ZMY6F Mouser Part # 511-M41T83ZMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	159In Stock 1,000Expected 5/10/2027	Cut Tape ¥1,252.4 ¥966.7 ¥895.3 ¥817.2 ¥759.1 Reel ¥720.9 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: ¥1,709.2 42In Stock 1,000Expected 11/16/2026	Mfr. Part # M41T93SMY6F Mouser Part # 511-M41T93SMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	42In Stock 1,000Expected 11/16/2026	Cut Tape ¥1,709.2 ¥1,330.5 ¥1,235.8 ¥1,091.3 View Reel ¥1,024.8 ¥1,048.1 ¥1,026.5 ¥1,024.8 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: ¥1,470 165In Stock	Mfr. Part # M41T93SQA6F Mouser Part # 511-M41T93SQA6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	165In Stock	Cut Tape ¥1,470 ¥1,136.1 ¥1,053.1 ¥961.7 Reel ¥803.9 View ¥901.9 ¥850.4 ¥787.3 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) 70ns M48T35Y-70PC1 STMicroelectronics 1: ¥8,491 5In Stock 480Expected 10/29/2026	Mfr. Part # M48T35Y-70PC1 Mouser Part # 511-M48T35Y70PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	5In Stock 480Expected 10/29/2026	¥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)	PCDIP-28	Integrated Battery	4.5 V	5.5 V	0 C	+ 70 C	M48T35Y	Through Hole	Tube
Real Time Clock Serial 64 (8X8) M41T00M6F STMicroelectronics 1: ¥699.3 9,523On Order	Mfr. Part # M41T00M6F Mouser Part # 511-M41T00M6F	STMicroelectronics	Real Time Clock Serial 64 (8X8)	Datasheet	9,523On Order On Order Ship Dates Mfr. #: M41T00M6F Stock: 0 On Order: 4,523 Expected 5/3/2027 5,000 Expected 10/25/2027 Factory Lead-Time: 30 Weeks	Cut Tape ¥699.3 ¥528.2 ¥486.7 ¥440.2 View Reel ¥360.4 ¥416.9 ¥406.9 ¥360.4 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Serial 2-Wire, I2C	YYYY-MM-DD	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	2 V	5.5 V	- 40 C	+ 85 C	M41T00	SMD/SMT	Reel, Cut Tape, MouseReel
Real Time Clock Serial 512 (64x8) M41T56M6F STMicroelectronics 1: ¥519.9 22,786On Order	Mfr. Part # M41T56M6F Mouser Part # 511-M41T56M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	22,786On Order On Order Ship Dates Mfr. #: M41T56M6F Stock: 0 On Order: 15,286 Expected 3/8/2027 2,500 Expected 9/13/2027 5,000 Expected 10/4/2027 Factory Lead-Time: 30 Weeks	Cut Tape ¥519.9 ¥395.3 ¥358.8 ¥327.2 View Reel ¥262.4 ¥312.3 ¥304 ¥295.7 ¥262.4 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	I2C	YY-MM-DD-dd	HH:MM:SS (24 hr)	SOIC-8	Backup Switching	4.5 V	5.5 V	- 40 C	+ 85 C	M41T56	SMD/SMT	Reel, Cut Tape, MouseReel
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 12/28/2026 11,000 Expected 4/7/2027 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)	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 2,000Expected 6/14/2027	Mfr. Part # M41T81SMY6F Mouser Part # 511-M41T81SMY6F	STMicroelectronics	Real Time Clock Serial Access Real Time Clock	Datasheet	2,000Expected 6/14/2027	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)	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)	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)	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)		Backup Switching	2.38 V	5.5 V	- 40 C	+ 85 C	M41T83	SMD/SMT	Reel, Cut Tape, MouseReel