Real Time Clock Real-Time Clock I2C interface with power management, -40 to +85 C, 16-pin QFN
AM1805AQ
Ambiq
1:
$0.77
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:
$2.66
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
$2.66
10
$1.98
25
$1.80
100
$1.62
1,000
$1.43
2,000
View
250
$1.53
500
$1.48
2,000
$1.41
5,000
$1.37
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:
$2.74
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
$2.74
10
$2.20
25
$2.03
100
$1.82
1,000
$1.65
2,000
View
250
$1.72
500
$1.69
2,000
$1.62
5,000
$1.59
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:
$3.08
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
$3.08
10
$2.30
25
$2.11
100
$1.89
1,000
$1.67
2,000
View
250
$1.79
500
$1.75
2,000
$1.62
5,000
$1.59
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:
$2.41
206,994 On Order
Mouser Part # 428-203591-MG01
Micro Crystal
Real Time Clock 32.768kHz I2C Time Acc. 1ppm
206,994 On Order
View Dates
On Order:
102,994 Expected 4/23/2027
104,000 Expected 5/21/2027
Factory Lead-Time:
28 Weeks
1
$2.41
10
$1.78
25
$1.62
100
$1.45
250
View
1,000
$1.23
250
$1.37
500
$1.33
1,000
$1.23
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:
$2.83
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 9/3/2026
7,500 Expected 10/9/2026
7,500 Expected 7/19/2027
Factory Lead-Time:
30 Weeks
1
$2.83
10
$2.14
25
$1.98
100
$1.80
250
View
2,500
$1.54
250
$1.71
500
$1.67
1,000
$1.60
2,500
$1.54
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:
$4.63
9,800 On Order
Mouser Part # 511-M41T83RQA6F
STMicroelectronics
Real Time Clock Battery Swtchovr-RTC
9,800 On Order
View Dates
On Order:
1,800 Expected 1/12/2027
8,000 Expected 1/13/2027
Factory Lead-Time:
30 Weeks
1
$4.63
10
$3.56
25
$3.26
100
$3.00
250
View
1,000
$2.57
250
$2.86
500
$2.82
1,000
$2.57
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:
$5.46
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
$5.46
10
$4.11
25
$3.77
100
$3.39
250
View
2,500
$3.10
250
$3.23
500
$3.14
1,000
$3.10
2,500
$3.10
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:
$2.02
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
$2.02
10
$1.48
25
$1.35
100
$1.20
2,500
$1.01
5,000
View
250
$1.13
500
$1.09
1,000
$1.08
5,000
$0.991
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 4096k NV SRAM with Phantom Clock
DS1251WP-120IND+
Analog Devices / Maxim Integrated
1:
$93.88
320 Expected 9/2/2026
Mouser Part # 700-DS1251WP-120IND
Analog Devices / Maxim Integrated
Real Time Clock 4096k NV SRAM with Phantom Clock
320 Expected 9/2/2026
1
$93.88
10
$78.18
25
$73.60
120
$69.52
Buy
Min.: 1 Mult.: 1
Max.: 320
Details
Parallel
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
512 kB
PowerCap Module-34
2.97 V
3.63 V
- 40 C
+ 85 C
DS1251WP
SMD/SMT
Tray
Real Time Clock Real-Time Clocks
DS12887+
Analog Devices / Maxim Integrated
1:
$21.17
4,677 On Order
Mouser Part # 700-DS12887
Analog Devices / Maxim Integrated
Real Time Clock Real-Time Clocks
4,677 On Order
View Dates
On Order:
1,121 Expected 9/23/2026
1,540 Expected 2/15/2027
2,016 Expected 2/16/2027
Factory Lead-Time:
15 Weeks
1
$21.17
10
$16.77
28
$15.68
112
$14.47
252
View
252
$13.80
504
$13.55
Buy
Min.: 1 Mult.: 1
Max.: 4,702
Details
Multiplexed
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
114 B
EDIP-24
Integrated Battery
4.5 V
5.5 V
0 C
+ 70 C
DS12887
Through Hole
Tube
Real Time Clock SERIAL RTC 1.8-3.3V HESR USOP TRL
DS1339BU+T
Analog Devices / Maxim Integrated
1:
$6.67
6,000 Expected 10/29/2026
Mouser Part # 700-DS1339BU+T
Analog Devices / Maxim Integrated
Real Time Clock SERIAL RTC 1.8-3.3V HESR USOP TRL
6,000 Expected 10/29/2026
Alternative Packaging
1
$6.67
10
$5.31
25
$4.69
100
$4.32
250
View
3,000
$3.80
250
$4.11
500
$4.03
1,000
$3.96
3,000
$3.80
Buy
Min.: 1 Mult.: 1
Max.: 6,000
Reel :3,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
uSOP-8
Backup Switching
1.71 V
5.5 V
- 40 C
+ 85 C
DS1339BU
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 5ppm, I2C Real-Time Clock
DS3231MZ+
Analog Devices / Maxim Integrated
1:
$15.16
3,976 Expected 2/10/2027
Mouser Part # 700-DS3231MZ+
Analog Devices / Maxim Integrated
Real Time Clock 5ppm, I2C Real-Time Clock
3,976 Expected 2/10/2027
Alternative Packaging
1
$15.16
10
$11.87
25
$11.05
100
$10.14
300
View
300
$10.05
500
$9.46
1,000
$9.24
2,500
Quote
Buy
Min.: 1 Mult.: 1
Max.: 3,976
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
SOIC-8
Backup Switching
2.3 V
5.5 V
- 40 C
+ 85 C
DS3231MZ
SMD/SMT
Tube
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:
$5.63
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
$5.63
10
$4.29
25
$3.96
100
$3.59
1,000
$3.11
2,000
View
250
$3.42
500
$3.34
2,000
$3.06
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 32.768 KHZ 3-OUTPUT
AB0805-T3
ABRACON
1:
$2.99
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
$2.99
10
$2.23
25
$2.04
100
$1.83
250
View
3,000
$1.48
250
$1.63
500
$1.59
1,000
$1.55
3,000
$1.48
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:
$8.06
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
$8.06
10
$6.13
25
$5.51
106
$5.19
265
View
265
$4.88
530
$4.82
1,007
$4.70
2,544
$4.58
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:
$5.32
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
$5.32
10
$4.05
25
$3.74
100
$3.39
250
View
250
$3.23
500
$3.09
980
$3.03
2,940
$2.98
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 REAL TIME CLK W/ ALARM DS1337 COMP
ISL12057IUZ-T
Renesas / Intersil
1:
$2.83
9,642 On Order
Mouser Part # 968-ISL12057IUZ-T
Renesas / Intersil
Real Time Clock REAL TIME CLK W/ ALARM DS1337 COMP
9,642 On Order
View Dates
Alternative Packaging
On Order:
4,642 Expected 8/27/2026
5,000 Expected 9/22/2026
Factory Lead-Time:
22 Weeks
1
$2.83
10
$2.14
25
$1.93
100
$1.73
2,500
$1.47
5,000
View
250
$1.64
500
$1.59
1,000
$1.55
5,000
$1.44
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
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
Reel, Cut Tape, MouseReel
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:
$3.17
6,892 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
6,892 On Order
View Dates
On Order:
2,892 Expected 9/11/2026
4,000 Expected 10/9/2026
Factory Lead-Time:
12 Weeks
1
$3.17
10
$2.38
25
$2.18
100
$1.96
1,000
$1.78
2,000
View
250
$1.86
500
$1.82
2,000
$1.75
5,000
$1.72
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:
$3.97
2,394 Expected 8/28/2026
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 8/28/2026
1
$3.97
10
$2.99
25
$2.75
100
$2.48
250
$2.45
1,000
$2.07
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 I2C GP RTCC 1Kb EE 64B SRAM EUI-48
MCP79411T-I/MNY
Microchip Technology
1:
$1.27
3,424 On Order
Mouser Part # 579-MCP79411TIMNY
Microchip Technology
Real Time Clock I2C GP RTCC 1Kb EE 64B SRAM EUI-48
3,424 On Order
View Dates
On Order:
3,300 Expected 8/31/2026
124 Expected 9/2/2026
Factory Lead-Time:
12 Weeks
Buy
Min.: 1 Mult.: 1
Reel :3,300
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
64 B
TDFN-8
Backup Switching
1.8 V
5.5 V
- 40 C
+ 85 C
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock RTC IC with 400 kHz I2C interface featuring 128 byte SRAM in HVSON12 package.
PCF85053ATKJ
NXP Semiconductors
1:
$1.69
6,000 Expected 10/5/2026
Mouser Part # 771-PCF85053ATKJ
NXP Semiconductors
Real Time Clock RTC IC with 400 kHz I2C interface featuring 128 byte SRAM in HVSON12 package.
6,000 Expected 10/5/2026
1
$1.69
10
$1.24
25
$1.12
100
$0.987
250
View
6,000
$0.781
250
$0.927
500
$0.891
1,000
$0.88
2,500
$0.849
6,000
$0.781
Buy
Min.: 1 Mult.: 1
Reel :6,000
Details
PCF85053A
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 32.768 KHZ
AB-RTCMC-32.768kHz-EOZ9-S3-DBT
ABRACON
1:
$8.40
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
$8.40
10
$6.50
25
$6.02
100
$5.51
250
View
1,000
$4.97
250
$5.26
500
$5.11
1,000
$4.97
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 3.5ppm, I2C RTC with Integrated Crystal and Power Management
Analog Devices / Maxim Integrated MAX31328NELB+T
MAX31328NELB+T
Analog Devices / Maxim Integrated
1:
$6.00
4,972 Expected 11/18/2026
Mouser Part # 700-MAX31328NELB+T
Analog Devices / Maxim Integrated
Real Time Clock 3.5ppm, I2C RTC with Integrated Crystal and Power Management
4,972 Expected 11/18/2026
Alternative Packaging
1
$6.00
10
$4.59
25
$4.24
100
$3.85
250
View
2,500
$3.30
250
$3.66
500
$3.63
1,000
$3.55
2,500
$3.30
Buy
Min.: 1 Mult.: 1
Max.: 4,972
Reel :2,500
Details
I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
LGA-10
Backup Switching
2.3 V
5.5 V
- 40 C
+ 85 C
SMD/SMT
Reel, Cut Tape
Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN
AM0805AQ
Ambiq
1:
$0.69
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
