Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN
AM1805AQ
Ambiq
1:
¥127.9
29,500 On Order
Mouser Part # 222-AM1805AQ
Ambiq
Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN
29,500 On Order
View Dates
On Order:
8,500 Expected 9/11/2026
6,000 Expected 9/14/2026
15,000 Expected 12/7/2026
Factory Lead-Time:
24 Weeks
Buy
Min.: 1 Mult.: 1
Details
Artasie I2C w/ Power Management
Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C
RV-4162-C7-32.768kHz-20PPM-TA-QC
Micro Crystal
1:
¥441.8
16,002 Expected 9/4/2026
Mouser Part # 428-200007-MG01
Micro Crystal
Real Time Clock 32.768 kHz +/-20 PPM I2C -40/+85C
16,002 Expected 9/4/2026
1
¥441.8
10
¥328.9
25
¥299
100
¥269.1
1,000
¥237.5
2,000
View
250
¥254.1
500
¥245.8
2,000
¥234.2
5,000
¥227.6
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
No Backup Switching
1 V
4.4 V
- 40 C
+ 85 C
RV-4162-C7
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C
RV-8803-C7-32.768KHZ-3PPM-TA-QC
Micro Crystal
1:
¥455.1
92,793 On Order
Mouser Part # 428-202677-MG01
Micro Crystal
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C
92,793 On Order
View Dates
On Order:
48,793 Pending
44,000 Expected 4/30/2027
Factory Lead-Time:
23 Weeks
1
¥455.1
10
¥365.4
25
¥337.2
100
¥302.3
1,000
¥274.1
2,000
View
250
¥285.7
500
¥280.7
2,000
¥269.1
5,000
¥264.1
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
No Backup Switching
1.5 V
5.5 V
- 40 C
+ 85 C
RV-8803-C7
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C
RV-8803-C7-32.768k-3PPM-TA-QA
Micro Crystal
1:
¥519.9
20,000 On Order
Mouser Part # 428-203035-MG01
Micro Crystal
Real Time Clock 32.768 kHz +/-3 PPM I2C -40/+85C
20,000 On Order
1
¥519.9
10
¥388.7
25
¥355.5
100
¥318.9
1,000
¥280.7
2,000
View
250
¥302.3
500
¥295.7
2,000
¥272.4
5,000
¥267.4
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
No Backup Switching
1.5 V
5.5 V
- 40 C
+ 85 C
RV-8803-C7
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz I2C Time Acc. 1ppm
RV-3028-C7 32.768kHz 1ppm TA QC
Micro Crystal
1:
¥408.6
205,000 On Order
Mouser Part # 428-203591-MG01
Micro Crystal
Real Time Clock 32.768kHz I2C Time Acc. 1ppm
205,000 On Order
View Dates
On Order:
101,000 Expected 4/23/2027
104,000 Expected 5/21/2027
Factory Lead-Time:
34 Weeks
1
¥408.6
10
¥302.3
25
¥275.7
100
¥247.5
250
View
1,000
¥227.6
250
¥232.5
500
¥229.2
1,000
¥227.6
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
2 B
Backup Switching
1.2 V
5.5 V
- 40 C
+ 85 C
RV-3028
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 32.768kHz I2C Time Acc. 1ppm
RV-3028-C7 32.768kHz 1ppm TA QA
Micro Crystal
1:
¥418.6
6,624 In Stock
23,284 On Order
Mouser Part # 428-203603-MG01
Micro Crystal
Real Time Clock 32.768kHz I2C Time Acc. 1ppm
6,624 In Stock
23,284 On Order
View Dates
Stock:
6,624 Can Ship Immediately
On Order:
11,284 Expected 9/9/2026
12,000 Expected 4/16/2027
Factory Lead-Time:
23 Weeks
1
¥418.6
10
¥312.3
25
¥284
100
¥255.8
1,000
¥230.9
2,000
View
250
¥240.8
500
¥235.9
2,000
¥225.9
5,000
¥220.9
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
2 B
Backup Switching
1.2 V
5.5 V
- 40 C
+ 85 C
RV-3028
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 2.0-5.5V 512 (64x8)
M41T81SM6F
STMicroelectronics
1:
¥470.1
18,995 On Order
Mouser Part # 511-M41T81SM6F
STMicroelectronics
Real Time Clock 2.0-5.5V 512 (64x8)
18,995 On Order
View Dates
Alternative Packaging
On Order:
3,995 Expected 9/10/2026
7,500 Expected 10/9/2026
7,500 Expected 7/19/2027
Factory Lead-Time:
30 Weeks
1
¥470.1
10
¥355.5
25
¥328.9
100
¥299
250
View
2,500
¥255.8
250
¥284
500
¥277.4
1,000
¥270.7
2,500
¥255.8
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
20 B
SOIC-8
Backup Switching
2.7 V
5.5 V
- 40 C
+ 85 C
M41T81S
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock Battery Swtchovr-RTC
+1 image
M41T83RQA6F
STMicroelectronics
1:
¥737.5
20,800 On Order
Mouser Part # 511-M41T83RQA6F
STMicroelectronics
Real Time Clock Battery Swtchovr-RTC
20,800 On Order
View Dates
On Order:
1,800 Expected 12/28/2026
8,000 Expected 1/11/2027
11,000 Expected 8/30/2027
Factory Lead-Time:
30 Weeks
1
¥737.5
10
¥558.1
25
¥513.2
100
¥465.1
250
View
1,000
¥415.3
250
¥441.8
500
¥433.5
1,000
¥415.3
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
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 512 (64x8)
M41T94MQ6F
STMicroelectronics
1:
¥906.9
7,972 On Order
Mouser Part # 511-M41T94MQ6F
STMicroelectronics
Real Time Clock Serial 512 (64x8)
7,972 On Order
View Dates
On Order:
2,972 Expected 9/4/2026
5,000 Expected 4/28/2027
Factory Lead-Time:
30 Weeks
1
¥906.9
10
¥674.4
25
¥621.2
100
¥563.1
250
View
2,500
¥496.6
250
¥536.5
500
¥519.9
1,000
¥513.2
2,500
¥496.6
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
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 SAMAY A 595-BQ32002D A 595-BQ32002D A 59 A 595-BQ32002D
BQ32002DR
Texas Instruments
1:
¥335.5
14,995 On Order
Mouser Part # 595-BQ32002DR
Texas Instruments
Real Time Clock SAMAY A 595-BQ32002D A 595-BQ32002D A 59 A 595-BQ32002D
14,995 On Order
View Dates
Alternative Packaging
On Order:
7,495 Expected 11/12/2026
7,500 Expected 12/3/2026
Factory Lead-Time:
16 Weeks
1
¥335.5
10
¥245.8
25
¥224.2
100
¥199.3
2,500
¥167.8
5,000
View
250
¥187.7
500
¥181
1,000
¥179.4
5,000
¥164.6
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
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
Reel, Cut Tape, MouseReel
Real Time Clock RX4901CE XB D0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-5ppm 2k TR
RX4901CE XB D06
Epson Timing
1:
¥749.1
238 In Stock
Mouser Part # 732-RX4901CEXBD06
Epson Timing
Real Time Clock RX4901CE XB D0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-5ppm 2k TR
238 In Stock
1
¥749.1
10
¥566.4
25
¥519.9
100
¥470.1
2,000
¥392
4,000
View
250
¥446.8
500
¥440.2
1,000
¥425.2
4,000
¥388.7
Buy
Min.: 1 Mult.: 1
Reel :2,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
256 B
Backup Switching
1.6 V
5.5 V
- 40 C
+ 105 C
RX4901CE
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock I2C-BUS RTC +/-5.0PPM-40 85C VSOJ-12 PIN 1K TR
+2 images
RX-8803LC:UB0 PURE SN
Epson Timing
1:
¥935.1
98 In Stock
Mouser Part # 732-X8803LCUB0PURESN
Epson Timing
Real Time Clock I2C-BUS RTC +/-5.0PPM-40 85C VSOJ-12 PIN 1K TR
98 In Stock
Alternative Packaging
1
¥935.1
10
¥712.6
25
¥657.8
100
¥596.3
1,000
¥516.6
2,000
View
250
¥568.1
500
¥554.8
2,000
¥508.3
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
No Backup Switching
1.6 V
5.5 V
- 40 C
+ 85 C
RX-8803LC
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock Automotive RTC module, featuring I2C or SPI interface in HLSON16 package.
PCA2131TF/Q900Y
NXP Semiconductors
1:
¥717.6
8,000 Expected 9/28/2026
Mouser Part # 771-PCA2131TF/Q900Y
NXP Semiconductors
Real Time Clock Automotive RTC module, featuring I2C or SPI interface in HLSON16 package.
8,000 Expected 9/28/2026
1
¥717.6
10
¥549.8
25
¥509.9
100
¥466.7
250
View
4,000
¥395.3
250
¥445.1
500
¥440.2
1,000
¥426.9
2,000
¥397
4,000
¥395.3
Buy
Min.: 1 Mult.: 1
Reel :4,000
Details
PCA2131
AEC-Q100
Reel, Cut Tape
Real Time Clock 32.768 KHZ 3-OUTPUT
AB0805-T3
ABRACON
1:
¥496.6
11,897 Expected 12/28/2026
Mouser Part # 815-AB0805-T3
ABRACON
Real Time Clock 32.768 KHZ 3-OUTPUT
11,897 Expected 12/28/2026
1
¥496.6
10
¥370.4
25
¥338.8
100
¥304
250
View
3,000
¥244.2
250
¥265.8
500
¥257.5
1,000
¥254.1
3,000
¥244.2
Buy
Min.: 1 Mult.: 1
Reel :3,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
256 B
QFN-16
Backup Switching
1.7 V
3.6 V
- 40 C
+ 85 C
AB08x5
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock REAL TIME CLOCK AND TMP COMP CRYSTL INLD
ISL12020MIRZ
Renesas / Intersil
1:
¥1,338.8
4,240 Expected 3/11/2027
Mouser Part # 968-ISL12020MIRZ
Renesas / Intersil
Real Time Clock REAL TIME CLOCK AND TMP COMP CRYSTL INLD
4,240 Expected 3/11/2027
Alternative Packaging
1
¥1,338.8
10
¥1,018.2
25
¥915.2
106
¥862.1
265
View
265
¥810.6
530
¥800.6
1,007
¥780.7
2,544
¥760.7
Buy
Min.: 1 Mult.: 1
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
128 B
DFN-20
Backup Switching
2.7 V
5.5 V
- 40 C
+ 85 C
ISL12020
SMD/SMT
Tube
Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L
ISL12022IBZ
Renesas / Intersil
1:
¥883.7
6,860 On Order
Mouser Part # 968-ISL12022IBZ
Renesas / Intersil
Real Time Clock REAL TIME CLK/CLNDR W/TEMP COMP 8 L
6,860 On Order
View Dates
Alternative Packaging
On Order:
3,920 Expected 12/29/2026
2,940 Expected 1/8/2027
Factory Lead-Time:
22 Weeks
1
¥883.7
10
¥672.7
25
¥621.2
100
¥563.1
250
View
250
¥536.5
500
¥513.2
980
¥503.3
2,940
¥495
5,880
Quote
Buy
Min.: 1 Mult.: 1
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
128 B
SOIC-8
Backup Switching
2.7 V
5.5 V
- 40 C
+ 85 C
ISL12022
SMD/SMT
Tube
Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8 AECQ200 Temperature Sensor & Real Time Clock
+1 image
RV-3032-C7 32.768kHz-2.5PPM-TA-QA
Micro Crystal
1:
¥563.1
889 In Stock
6,000 On Order
Mouser Part # 428-203853-MG01
Micro Crystal
Real Time Clock 32.768kHz I2C 2.5ppm 3.2x1.5x0.8 AECQ200 Temperature Sensor & Real Time Clock
889 In Stock
6,000 On Order
View Dates
On Order:
2,000 Expected 9/11/2026
4,000 Expected 10/9/2026
Factory Lead-Time:
12 Weeks
1
¥563.1
10
¥423.6
25
¥387
100
¥348.8
1,000
¥318.9
2,000
View
250
¥330.5
500
¥325.6
2,000
¥312.3
5,000
¥307.3
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
16 B
Backup Switching
1.3 V
5.5 V
- 40 C
+ 105 C
RV-3032-C7
SMD/SMT
AEC-Q200
Reel, Cut Tape, MouseReel
Real Time Clock RV-3029-C3, Real-Time Clock, I C-bus, B Stability, 25ppm @ -40 to +85C (SMD 3.7 x 2.5 x 0.9)
RV-3029-C3-TA-QC-Opt. B
Micro Crystal
1:
¥659.4
2,394 Expected 9/10/2026
Mouser Part # 428-RV3029C3TAQCOPTB
Micro Crystal
Real Time Clock RV-3029-C3, Real-Time Clock, I C-bus, B Stability, 25ppm @ -40 to +85C (SMD 3.7 x 2.5 x 0.9)
2,394 Expected 9/10/2026
1
¥659.4
10
¥496.6
25
¥456.8
100
¥411.9
250
¥406.9
1,000
¥343.8
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
2 B
Backup Switching
1.3 V
5.5 V
- 40 C
+ 85 C
RV-3029-C3
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 32.768 KHZ
AB-RTCMC-32.768kHz-EOZ9-S3-DBT
ABRACON
1:
¥1,395.2
2,061 On Order
Mouser Part # 815-ABMC-327EOZ9S3DB
ABRACON
Real Time Clock 32.768 KHZ
2,061 On Order
View Dates
On Order:
61 Expected 9/11/2026
2,000 Expected 9/22/2026
Factory Lead-Time:
12 Weeks
1
¥1,395.2
10
¥1,079.7
25
¥999.9
100
¥915.2
250
View
1,000
¥825.5
250
¥873.7
500
¥848.8
1,000
¥825.5
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
Backup Switching
1.4 V
5.5 V
- 40 C
+ 85 C
AB-RTCMC
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN
AM0805AQ
Ambiq
1:
¥114.6
2,869 Expected 9/29/2026
Mouser Part # 222-AM0805AQ
Ambiq
Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN
2,869 Expected 9/29/2026
Buy
Min.: 1 Mult.: 1
Details
Artasie I2C
Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.7 AEC-Q200
RV-8263-C8 32.768kHz-20PPM-TA-QA
Micro Crystal
1:
¥262.4
4,000 Expected 10/30/2026
Mouser Part # 428-204291-MC01
Micro Crystal
Real Time Clock 32.768kHz I2C 20ppm 2.0x1.2x0.7 AEC-Q200
4,000 Expected 10/30/2026
1
¥262.4
10
¥192.7
25
¥174.4
100
¥153.5
1,000
¥138.4
2,000
View
250
¥144.2
500
¥138.5
2,000
¥133.5
5,000
¥132
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
SON-8
900 mV
5.5 V
- 40 C
+ 85 C
RV-8263-C8
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock
RV-8263-C7-32.768KHZ-20PPM-TA-QA
Micro Crystal
1:
¥275.7
2,000 Expected 11/20/2026
Mouser Part # 428-8263C7328K20PTQA
Micro Crystal
Real Time Clock
2,000 Expected 11/20/2026
1
¥275.7
10
¥202.6
25
¥182.7
100
¥161.1
250
View
250
¥151.3
500
¥147.3
1,000
¥145.2
2,000
¥134.4
5,000
¥131.4
Buy
Min.: 1 Mult.: 1
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
No Backup Switching
900 mV
5.5 V
- 40 C
+ 85 C
SMD/SMT
Real Time Clock Serial Access Real Time Clock
M41T81SMY6F
STMicroelectronics
1:
¥1,651
2,000 On Order
Mouser Part # 511-M41T81SMY6F
STMicroelectronics
Real Time Clock Serial Access Real Time Clock
2,000 On Order
1
¥1,651
10
¥1,284
25
¥1,192.6
100
¥1,091.3
1,000
¥988.3
2,000
View
250
¥1,036.5
500
¥1,014.9
2,000
¥935.1
5,000
Quote
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
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 Serial I2C bus RTC
+1 image
M41T83SQA6F
STMicroelectronics
1:
¥734.2
2,000 In Stock
750 Expected 9/4/2026
Mouser Part # 511-M41T83SQA6F
STMicroelectronics
Real Time Clock Serial I2C bus RTC
2,000 In Stock
750 Expected 9/4/2026
1
¥734.2
10
¥554.8
25
¥509.9
100
¥461.8
1,000
¥393.7
2,000
View
250
¥438.5
500
¥431.9
2,000
¥383.7
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
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 I2C GP RTCC 64B SRAM
MCP7940NT-I/MNY
Microchip Technology
1:
¥162.8
9,743 Expected 9/3/2026
Mouser Part # 579-MCP7940NT-I/MNY
Microchip Technology
Real Time Clock I2C GP RTCC 64B SRAM
9,743 Expected 9/3/2026
1
¥162.8
10
¥162.3
250
¥157.8
1,000
¥156.1
3,300
¥137.9
Buy
Min.: 1 Mult.: 1
Reel :3,300
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
64 B
TDFN-8
Backup Switching
1.8 V
5.5 V
- 40 C
+ 85 C
SMD/SMT
Reel, Cut Tape, MouseReel
Japan