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Real Time Clock

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) 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: HK$45.05 2,559In Stock 5,000Expected 28/4/2027	Mfr. Part No. M41T94MQ6F Mouser Part No 511-M41T94MQ6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	2,559In Stock 5,000Expected 28/4/2027	Cut Tape HK$45.05 HK$34.36 HK$31.73 HK$28.77 View Reel HK$24.74 HK$27.37 HK$26.80 HK$26.55 HK$24.74 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: HK$257.29 646In Stock	Mfr. Part No. M48T02-150PC1 Mouser Part No 511-M48T0215PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 150ns	Datasheet	646In Stock	HK$257.29 HK$204.51 HK$187.01 HK$177.14 HK$170.40	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: HK$246.35 430In Stock	Mfr. Part No. M48T02-70PC1 Mouser Part No 511-M48T0270PC1	STMicroelectronics	Real Time Clock 16K (2Kx8) 70ns	Datasheet	430In Stock	HK$246.35 HK$195.64 HK$184.62 HK$171.39 View HK$165.39 HK$159.55 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: HK$321.40 218In Stock 480Expected 29/10/2026	Mfr. Part No. M48T08-150PC1 Mouser Part No 511-M48T0815PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 150ns	Datasheet	218In Stock 480Expected 29/10/2026	HK$321.40 HK$259.01 HK$243.15 HK$234.60 View HK$218.32 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: HK$449.06 236In Stock	Mfr. Part No. M48T35-70PC1 Mouser Part No 511-M48T3570PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	236In Stock	HK$449.06 HK$365.38 HK$343.10 HK$323.70 View HK$323.54 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: HK$198.92 520In Stock	Mfr. Part No. M48T35Y-70MH1F Mouser Part No 511-M48T35Y-70MH1F	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	520In Stock	Cut Tape HK$198.92 HK$159.30 HK$149.36 HK$138.51 View Reel HK$127.08 HK$135.55 HK$127.16 HK$127.08 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: HK$393.41 179In Stock	Mfr. Part No. M48T58-70PC1 Mouser Part No 511-M48T5870PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	179In Stock	HK$393.41 HK$320.09 HK$300.77 HK$294.19 View HK$276.77 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: HK$306.93 418In Stock	Mfr. Part No. M48T58Y-70PC1 Mouser Part No 511-M48T58Y70PC1	STMicroelectronics	Real Time Clock 64K (8Kx8) 70ns	Datasheet	418In Stock	HK$306.93 HK$247.18 HK$231.89 HK$220.30 View HK$210.27 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: HK$63.87 23In Stock 1,350On Order	Mfr. Part No. M41ST87WSS6F Mouser Part No 511-M41ST87WSS6F	STMicroelectronics	Real Time Clock 128 NVRAM Serial RTC 3.0 to 3.6 Vcc	Datasheet	23In Stock 1,350On Order	Cut Tape HK$63.87 HK$49.32 HK$45.62 HK$41.68 Reel HK$35.76 View HK$39.13 HK$39.05 HK$33.95 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: HK$24.99 44In Stock 5,000Expected 23/8/2027	Mfr. Part No. M41T81M6F Mouser Part No 511-M41T81M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	44In Stock 5,000Expected 23/8/2027	Cut Tape HK$24.99 HK$18.74 HK$17.18 HK$15.45 View Reel HK$12.25 HK$14.63 HK$13.89 HK$13.23 HK$12.25 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: HK$23.76 94In Stock 25,000On Order	Mfr. Part No. M41T81SM6F Mouser Part No 511-M41T81SM6F	STMicroelectronics	Real Time Clock 2.0-5.5V 512 (64x8)	Datasheet	94In Stock 25,000On Order On Order Ship Dates Mfr. No: M41T81SM6F Stock: 94 Can Dispatch Immediately On Order: 7,500 Expected 29/10/2026 7,500 Expected 19/7/2027 10,000 Expected 18/10/2027 Factory Lead Time: 30 Weeks	Cut Tape HK$23.76 HK$17.67 HK$16.11 HK$14.47 View Reel HK$12.33 HK$13.65 HK$13.40 HK$12.66 HK$12.33 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: HK$45.21 334In Stock	Mfr. Part No. M41T83RMY6F Mouser Part No 511-M41T83RMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	334In Stock	Cut Tape HK$45.21 HK$34.44 HK$31.73 HK$28.77 Reel HK$26.14 View HK$27.37 HK$26.55 HK$25.81 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: HK$41.92 240In Stock 1,000Expected 4/11/2026	Mfr. Part No. M41T83SMY6F Mouser Part No 511-M41T83SMY6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	240In Stock 1,000Expected 4/11/2026	Cut Tape HK$41.92 HK$31.98 HK$29.43 HK$26.55 Reel HK$21.70 View HK$25.24 HK$24.99 HK$21.37 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: HK$38.63 60In Stock 5,000Expected 10/5/2027	Mfr. Part No. M41T83SQA6F Mouser Part No 511-M41T83SQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	60In Stock 5,000Expected 10/5/2027	Cut Tape HK$38.63 HK$29.26 HK$26.96 HK$23.84 View Reel HK$20.96 HK$22.69 HK$22.28 HK$20.96 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: HK$61.98 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 HK$61.98 HK$47.84 HK$44.31 HK$40.44 HK$37.57 Reel HK$35.67 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: HK$84.58 42In Stock 1,000Expected 16/11/2026	Mfr. Part No. M41T93SMY6F Mouser Part No 511-M41T93SMY6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	42In Stock 1,000Expected 16/11/2026	Cut Tape HK$84.58 HK$65.84 HK$61.16 HK$54.01 View Reel HK$50.72 HK$51.87 HK$50.80 HK$50.72 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: HK$72.75 165In Stock	Mfr. Part No. M41T93SQA6F Mouser Part No 511-M41T93SQA6F	STMicroelectronics	Real Time Clock Serial SPI bus RTC	Datasheet	165In Stock	Cut Tape HK$72.75 HK$56.22 HK$52.11 HK$47.59 Reel HK$39.78 View HK$44.63 HK$42.09 HK$38.96 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: HK$420.21 5In Stock 480Expected 29/10/2026	Mfr. Part No. M48T35Y-70PC1 Mouser Part No 511-M48T35Y70PC1	STMicroelectronics	Real Time Clock 256K (32Kx8) 70ns	Datasheet	5In Stock 480Expected 29/10/2026	HK$420.21 HK$340.31 HK$319.26 HK$303.89 HK$289.02	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: HK$34.61 9,523On Order	Mfr. Part No. M41T00M6F Mouser Part No 511-M41T00M6F	STMicroelectronics	Real Time Clock Serial 64 (8X8)	Datasheet	9,523On Order On Order Ship Dates Mfr. No: M41T00M6F Stock: 0 On Order: 4,523 Expected 3/5/2027 5,000 Expected 25/10/2027 Factory Lead Time: 30 Weeks	Cut Tape HK$34.61 HK$26.14 HK$24.08 HK$21.78 View Reel HK$17.84 HK$20.63 HK$20.14 HK$17.84 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: HK$25.73 22,786On Order	Mfr. Part No. M41T56M6F Mouser Part No 511-M41T56M6F	STMicroelectronics	Real Time Clock Serial 512 (64x8)	Datasheet	22,786On Order On Order Ship Dates Mfr. No: M41T56M6F Stock: 0 On Order: 15,286 Expected 8/3/2027 2,500 Expected 29/9/2027 5,000 Expected 4/10/2027 Factory Lead Time: 30 Weeks	Cut Tape HK$25.73 HK$19.56 HK$17.76 HK$16.19 View Reel HK$12.99 HK$15.45 HK$15.04 HK$14.63 HK$12.99 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: HK$38.06 19,285On Order	Mfr. Part No. M41T83RQA6F Mouser Part No 511-M41T83RQA6F	STMicroelectronics	Real Time Clock Battery Swtchovr-RTC	Datasheet	19,285On Order On Order Ship Dates Mfr. No: M41T83RQA6F Stock: 0 On Order: 285 Expected 16/12/2026 8,000 Expected 28/12/2026 11,000 Expected 7/4/2027 Factory Lead Time: 30 Weeks	Cut Tape HK$38.06 HK$29.26 HK$26.80 HK$24.66 View Reel HK$20.96 HK$23.51 HK$23.18 HK$20.96 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: HK$82.86 2,000Expected 4/10/2027	Mfr. Part No. M41T81SMY6F Mouser Part No 511-M41T81SMY6F	STMicroelectronics	Real Time Clock Serial Access Real Time Clock	Datasheet	2,000Expected 4/10/2027	Cut Tape HK$82.86 HK$64.61 HK$60.01 HK$54.99 HK$53.02 Reel HK$49.98 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: HK$168.59 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 HK$168.59 HK$144.92 HK$135.47 HK$119.93 View Reel HK$110.81 HK$116.97 HK$110.97 HK$110.81 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: HK$58.69 Non-Stocked Lead-Time 30 Weeks	Mfr. Part No. M41T00AUDD1F Mouser Part No 511-M41T00AUDD1F	STMicroelectronics	Real Time Clock SERIAL RTC W/AUDIO	Datasheet	Non-Stocked Lead-Time 30 Weeks	Reel HK$58.69	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: HK$57.62 Non-Stocked Lead-Time 30 Weeks	Mfr. Part No. M41T83ZQA6F Mouser Part No 511-M41T83ZQA6F	STMicroelectronics	Real Time Clock Serial I2C bus RTC	Datasheet	Non-Stocked Lead-Time 30 Weeks	Cut Tape HK$57.62 HK$45.37 HK$41.02 HK$37.40 View Reel HK$33.70 HK$35.67 HK$35.51 HK$33.70 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