Real Time Clock 2-Wire Real Time Clock IC
R2051S01-E2-F
Nisshinbo
1:
$2.49
128 In Stock
2,000 Expected 2026-07-21
Mouser Part # 848-R2051S01E2F
Nisshinbo
Real Time Clock 2-Wire Real Time Clock IC
128 In Stock
2,000 Expected 2026-07-21
1
$2.49
10
$1.83
25
$1.67
100
$1.48
2,000
$1.22
4,000
View
250
$1.39
500
$1.33
1,000
$1.30
4,000
$1.19
Buy
Min.: 1 Mult.: 1
Reel :2,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
SSOP-16
Backup Switching
750 mV
5.5 V
- 40 C
+ 85 C
R2051S
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real Time Clock IC
R2051S02-E2-F
Nisshinbo
1:
$3.84
681 In Stock
Mouser Part # 848-R2051S02E2F
Nisshinbo
Real Time Clock 2-Wire Real Time Clock IC
681 In Stock
1
$3.84
10
$2.49
25
$2.22
100
$1.83
2,000
$1.19
4,000
View
250
$1.73
500
$1.51
1,000
$1.21
4,000
$1.16
Buy
Min.: 1 Mult.: 1
Reel :2,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
SSOP-16
Backup Switching
750 mV
5.5 V
- 40 C
+ 85 C
R2051S
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real Time Clock IC
R2221T-E2-F
Nisshinbo
1:
$2.33
725 In Stock
2,000 Expected 2026-06-05
Mouser Part # 848-R2221TE2F
Nisshinbo
Real Time Clock 2-Wire Real Time Clock IC
725 In Stock
2,000 Expected 2026-06-05
1
$2.33
10
$1.71
25
$1.56
100
$1.38
2,000
$1.14
4,000
View
250
$1.30
500
$1.25
1,000
$1.21
4,000
$1.11
Buy
Min.: 1 Mult.: 1
Reel :2,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
TSSOP-10
No Backup Switching
1.5 V
5.5 V
- 40 C
+ 85 C
R2221T
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real Time Clock IC
RS5C372A-E2-F
Nisshinbo
1:
$2.26
972 In Stock
2,000 Expected 2026-07-21
Mouser Part # 848-RS5C372AE2F
Nisshinbo
Real Time Clock 2-Wire Real Time Clock IC
972 In Stock
2,000 Expected 2026-07-21
1
$2.26
10
$1.66
25
$1.51
100
$1.34
2,000
$1.13
4,000
View
250
$1.26
500
$1.21
1,000
$1.17
4,000
$1.10
Buy
Min.: 1 Mult.: 1
Reel :2,000
Details
Serial 2-Wire, I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
SSOP-8
Backup Switching
1.7 V
6 V
- 40 C
+ 85 C
RS5C372
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock Parallel RTC A 595-B Q4802LYPWR A 595-BQ A 595-BQ4802LYPWR
BQ4802LYPW
Texas Instruments
1:
$13.84
68 In Stock
End of Life
Mouser Part # 595-BQ4802LYPW
End of Life
Texas Instruments
Real Time Clock Parallel RTC A 595-B Q4802LYPWR A 595-BQ A 595-BQ4802LYPWR
68 In Stock
Alternative Packaging
1
$13.84
10
$11.19
50
$9.49
100
$9.03
250
View
250
$8.83
500
$8.73
1,000
$8.63
3,000
Quote
Buy
Min.: 1 Mult.: 1
Details
Parallel
YY-MM-DD-dd
HH:MM:SS (24 hr)
16 B
TSSOP-28
Backup Switching
2.7 V
3.6 V
0 C
+ 70 C
BQ4802LY
SMD/SMT
Tube
Real Time Clock Parallel RTC
BQ4802YPW
Texas Instruments
1:
$16.75
76 In Stock
End of Life
Mouser Part # 595-BQ4802YPW
End of Life
Texas Instruments
Real Time Clock Parallel RTC
76 In Stock
Alternative Packaging
1
$16.75
10
$13.13
50
$12.60
100
$12.27
250
View
250
$12.20
500
$11.82
1,000
$11.69
3,000
Quote
Buy
Min.: 1 Mult.: 1
Details
Parallel
YY-MM-DD-dd
HH:MM:SS (24 hr)
16 B
TSSOP-28
Backup Switching
4.5 V
5.5 V
0 C
+ 70 C
BQ4802Y
SMD/SMT
Tube
Real Time Clock REAL TIME CLK/CLNDR W/EEPROM IN 8LD W
ISL12026AIBZ
Renesas / Intersil
1:
$5.70
84 In Stock
End of Life
Mouser Part # 968-ISL12026AIBZ
End of Life
Renesas / Intersil
Real Time Clock REAL TIME CLK/CLNDR W/EEPROM IN 8LD W
84 In Stock
Alternative Packaging
1
$5.70
10
$4.32
25
$3.97
100
$3.59
250
View
250
$3.54
500
$3.53
980
$3.40
2,940
$3.36
Buy
Min.: 1 Mult.: 1
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
512 B
SOIC-8
Backup Switching
2.7 V
5.5 V
- 40 C
+ 85 C
ISL12026
SMD/SMT
Tube
Real Time Clock RX4901CEXS A0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-3ppm 2k TR
RX4901CE XS A06
Epson Timing
1:
$8.28
1,988 In Stock
Mouser Part # 732-RX4901CEXSA06
Epson Timing
Real Time Clock RX4901CEXS A0 REAL TIME CLOCK MODULE SPI-Bus 3.0V +/-3ppm 2k TR
1,988 In Stock
1
$8.28
10
$6.34
25
$5.86
100
$5.33
250
View
2,000
$4.67
250
$5.07
500
$4.92
1,000
$4.80
2,000
$4.67
4,000
Quote
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 RX8901CE XB B0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-5ppm 2k TR
RX8901CE XB B06
Epson Timing
1:
$6.49
986 In Stock
Mouser Part # 732-RX8901CEXBB06
Epson Timing
Real Time Clock RX8901CE XB B0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-5ppm 2k TR
986 In Stock
1
$6.49
10
$4.92
25
$4.54
100
$4.10
2,000
$3.40
4,000
View
250
$3.90
500
$3.82
1,000
$3.53
4,000
$3.38
Buy
Min.: 1 Mult.: 1
Reel :2,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
No Backup Switching
1.6 V
5.5 V
- 40 C
+ 105 C
RX8901CE
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR
RX8901CE XS A06
Epson Timing
1:
$8.68
695 In Stock
Mouser Part # 732-RX8901CEXSA06
Epson Timing
Real Time Clock RX8901CE XS A0 REAL TIME CLOCK MODULE I2C-Bus 3.0V +/-3ppm 2k TR
695 In Stock
1
$8.68
10
$6.65
25
$6.15
100
$5.59
250
View
2,000
$4.74
250
$5.33
500
$5.27
1,000
$5.05
2,000
$4.74
4,000
Quote
Buy
Min.: 1 Mult.: 1
Reel :2,000
Details
I2C
YY-MM-DD-dd
HH:MM:SS (24 hr)
No Backup Switching
1.6 V
5.5 V
- 40 C
+ 105 C
RX8901CE
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:
$0.979
366 In Stock
3,000 Expected 2026-09-29
Mouser Part # 222-AM0805AQ
Ambiq
Real Time Clock Real-Time Clock I2C Interface Integrated Circuit, -40 to +85 C, 16-pin QFN
366 In Stock
3,000 Expected 2026-09-29
Buy
Min.: 1 Mult.: 1
Details
Artasie I2C
Real Time Clock Serial I2C bus RTC
M41T82SM6F
STMicroelectronics
1:
$4.28
93 In Stock
7,500 On Order
Mouser Part # 511-M41T82SM6F
STMicroelectronics
Real Time Clock Serial I2C bus RTC
93 In Stock
7,500 On Order
View Dates
On Order:
2,500 Expected 2026-06-15
5,000 Expected 2026-07-20
Factory Lead-Time:
26 Weeks
1
$4.28
10
$3.20
25
$2.92
100
$2.59
250
View
2,500
$2.26
250
$2.49
500
$2.40
1,000
$2.39
2,500
$2.26
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
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 I2C RTCC 64B SRAM No VBAT
MCP7940M-I/P
Microchip Technology
1:
$1.07
715 In Stock
Mouser Part # 579-MCP7940579-M-I/P
Microchip Technology
Real Time Clock I2C RTCC 64B SRAM No VBAT
715 In Stock
Buy
Min.: 1 Mult.: 1
Details
I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
64 B
PDIP-8
No Backup Switching
1.8 V
5.5 V
- 40 C
+ 85 C
Through Hole
Tube
Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64
MCP79512-I/MS
Microchip Technology
1:
$2.00
920 In Stock
Mouser Part # 579-MCP79512-I/MS
Microchip Technology
Real Time Clock SPI GP RTCC 1Kb EE 64B SRAM EUI-64
920 In Stock
Alternative Packaging
Buy
Min.: 1 Mult.: 1
Details
SPI
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
64 B
MSOP-10
Backup Switching
1.8 V
3.6 V
- 40 C
+ 85 C
SMD/SMT
Tube
Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48
MCP795W21-I/ST
Microchip Technology
1:
$2.85
121 In Stock
Mouser Part # 579-MCP795W21-I/ST
Microchip Technology
Real Time Clock 2Kb EE 64B SRAM WD TED EUI-48
121 In Stock
Alternative Packaging
Buy
Min.: 1 Mult.: 1
Details
SPI
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
2 kB
TSSOP-14
Backup Switching
1.8 V
5.5 V
- 40 C
+ 85 C
SMD/SMT
Tube
Real Time Clock 2Kb EE 64B SRAM WD TED EUI-64
MCP795W22-I/SL
Microchip Technology
1:
$2.79
5 In Stock
Mouser Part # 579-MCP795W22-I/SL
Microchip Technology
Real Time Clock 2Kb EE 64B SRAM WD TED EUI-64
5 In Stock
Alternative Packaging
Buy
Min.: 1 Mult.: 1
Details
SPI
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
2 kB
SOIC-14
Backup Switching
1.8 V
5.5 V
- 40 C
+ 85 C
SMD/SMT
Tube
Real Time Clock Real-Time Clocks
+1 image
DS12885S+T&R
Analog Devices / Maxim Integrated
1:
$19.54
484 In Stock
Mouser Part # 700-DS12885ST&R
Analog Devices / Maxim Integrated
Real Time Clock Real-Time Clocks
484 In Stock
Alternative Packaging
1
$19.54
10
$15.38
25
$14.34
100
$13.20
250
View
1,000
$11.68
250
$12.90
500
$12.47
1,000
$11.68
Buy
Min.: 1 Mult.: 1
Reel :1,000
Details
Multiplexed
YY-MM-DD-dd
HH:MM:SS (24 hr)
114 B
SO-24
4.5 V
5.5 V
0 C
+ 70 C
DS12885S
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock 1.8V-5.5V Real Time Clock 12C bus
+2 images
PT7C4337UEX
Diodes Incorporated
1:
$1.68
1,668 In Stock
Mouser Part # 729-PT7C4337UEX
Diodes Incorporated
Real Time Clock 1.8V-5.5V Real Time Clock 12C bus
1,668 In Stock
Alternative Packaging
1
$1.68
10
$1.22
25
$1.10
100
$0.966
250
View
2,500
$0.799
250
$0.904
500
$0.865
1,000
$0.861
2,500
$0.799
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
Reel, Cut Tape, MouseReel
Real Time Clock 2-Wire Real-time Clock module
+2 images
PT7C43390LEX
Diodes Incorporated
1:
$2.56
324 In Stock
Mouser Part # 729-PT7C43390LEX
Diodes Incorporated
Real Time Clock 2-Wire Real-time Clock module
324 In Stock
Alternative Packaging
1
$2.56
10
$1.89
25
$1.71
100
$1.53
250
View
2,500
$1.25
250
$1.43
500
$1.37
1,000
$1.36
2,500
$1.25
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
Reel, Cut Tape, MouseReel
Real Time Clock Real-time Clock IC
+2 images
PT7C4372ALEX
Diodes Incorporated
1:
$1.43
18 In Stock
Mouser Part # 729-PT7C4372ALEX
Diodes Incorporated
Real Time Clock Real-time Clock IC
18 In Stock
Alternative Packaging
1
$1.43
10
$1.03
25
$0.912
100
$0.802
250
View
2,500
$0.675
250
$0.749
500
$0.717
1,000
$0.694
2,500
$0.675
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
Reel, Cut Tape, MouseReel
Real Time Clock RTC Module with I2C or SPI interface featuring backup battery switch-over function in HLSON16 package.
PCF2131TFY
NXP Semiconductors
1:
$4.54
344 In Stock
12,000 Expected 2026-06-01
Mouser Part # 771-PCF2131TFY
NXP Semiconductors
Real Time Clock RTC Module with I2C or SPI interface featuring backup battery switch-over function in HLSON16 package.
344 In Stock
12,000 Expected 2026-06-01
1
$4.54
10
$3.48
25
$3.18
100
$2.88
250
View
4,000
$2.43
250
$2.72
500
$2.64
4,000
$2.43
Buy
Min.: 1 Mult.: 1
Reel :4,000
Details
Serial, I2C, SPI
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
Backup Switching
1.2 V
5.5 V
- 40 C
+ 85 C
PCF2131
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock Low Power Real time clocks
PCF85063BTL/1,118
NXP Semiconductors
1:
$1.24
4,235 In Stock
Mouser Part # 771-PCF85063BTL1118
NXP Semiconductors
Real Time Clock Low Power Real time clocks
4,235 In Stock
1
$1.24
10
$0.888
25
$0.799
100
$0.703
250
View
4,000
$0.528
250
$0.655
500
$0.628
1,000
$0.605
2,000
$0.559
4,000
$0.528
Buy
Min.: 1 Mult.: 1
Reel :4,000
Details
SPI
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
DFN2626-10
No Backup Switching
900 mV
5.5 V
- 40 C
+ 85 C
PCF85063B
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock Low Power Real time clocks
+1 image
PCF85263ATT/AJ
NXP Semiconductors
1:
$1.77
166 In Stock
25,000 Expected 2026-05-25
Mouser Part # 771-PCF85263ATT/AJ
NXP Semiconductors
Real Time Clock Low Power Real time clocks
166 In Stock
25,000 Expected 2026-05-25
1
$1.77
10
$1.28
25
$1.16
100
$1.03
2,500
$0.857
5,000
View
250
$0.963
500
$0.924
1,000
$0.893
5,000
$0.837
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
I2C
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
TSSOP-8
Backup Switching
900 mV
5.5 V
- 40 C
+ 85 C
PCF85263A
SMD/SMT
Reel, Cut Tape, MouseReel
Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB
DP8570AV/NOPB
Texas Instruments
1:
$62.48
17 In Stock
Mouser Part # 926-DP8570AV/NOPB
Texas Instruments
Real Time Clock Timer Control Periph eral A 926-DP8570AV A 926-DP8570AVX/NOPB
17 In Stock
Alternative Packaging
1
$62.48
10
$51.16
25
$47.45
105
$45.09
280
$43.52
Buy
Min.: 1 Mult.: 1
Details
Parallel
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
32 B
PLCC-28
Backup Switching
4.5 V
5.5 V
- 40 C
+ 85 C
DP8570A
SMD/SMT
Tube
Real Time Clock Real Time Clock A 92 6-DP8573AVX/NOPB A A 926-DP8573AVX/NOPB
DP8573AV/NOPB
Texas Instruments
1:
$44.57
8 In Stock
70 Expected 2026-06-08
Mouser Part # 926-DP8573AV/NOPB
Texas Instruments
Real Time Clock Real Time Clock A 92 6-DP8573AVX/NOPB A A 926-DP8573AVX/NOPB
8 In Stock
70 Expected 2026-06-08
Alternative Packaging
1
$44.57
10
$36.01
25
$33.22
105
$31.45
280
$30.27
Buy
Min.: 1 Mult.: 1
Details
Parallel
YY-MM-DD-dd
HH:MM:SS:hh (12 hr, 24 hr)
32 B
PLCC-28
Backup Switching
4.5 V
5.5 V
- 40 C
+ 85 C
DP8573A
SMD/SMT
Tube
