Call us: +86 0755-82563503

Currency: $ US Dollar

Items : %s%s

RTCs

Compare Image Name Manufacturer Pricing(USD) Quantity Weight(Kg) Size(LxWxH) Datasheet Factory Lead Time Mount Packaging Published Series Pbfree Code Part Status Moisture Sensitivity Level (MSL) Number of Terminations ECCN Code Max Operating Temperature Min Operating Temperature Operating Supply Voltage Length RoHS Status Lead Free Contact Plating Radiation Hardening Number of Pins Package / Case Interface REACH SVHC Reach Compliance Code Density Frequency Height Width Mounting Type Weight Operating Temperature Technology Height Seated (Max) HTS Code Nominal Supply Current Type JESD-609 Code Terminal Finish Terminal Position Terminal Form Peak Reflow Temperature (Cel) Supply Voltage Time@Peak Reflow Temperature-Max (s) Base Part Number Pin Count Temperature Grade Surface Mount Terminal Pitch JESD-30 Code Supply Voltage-Min (Vsup) Operating Temperature (Max) Operating Temperature (Min) Subcategory Qualification Status Power Supplies Supply Voltage-Max (Vsup) Feature Supplier Device Package Number of Terminals Logic Function Access Time Memory Size Number of Bits Voltage - Supply Time Format External Data Bus Width Data Bus Width uPs/uCs/Peripheral ICs Type Clock Frequency Word Size Time-Min Interrupt Capability Volatile Information Access Method Number of Timers Date Format Current - Timekeeping (Max) Voltage - Supply, Battery
DS1305EN DS1305EN Rochester Electronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube Obsolete 1 (Unlimited) Non-RoHS Compliant 20-TSSOP (0.173, 4.40mm Width) SPI Surface Mount -40°C~85°C Clock/Calendar Alarm, Leap Year, NVSRAM, Trickle-Charger 20-TSSOP 96B 2V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 25.3μA~81μA @ 2V~5V 2V~5.5V
ISL12026AIVZ-T ISL12026AIVZ-T Renesas Electronics America Inc. 4.1823
Add to Cart

Min: 1

Mult: 1

0.00000000 download 7 Weeks Tape & Reel (TR) 2010 Active 1 (Unlimited) 8 EAR99 4.4mm ROHS3 Compliant 8-TSSOP (0.173, 4.40mm Width) I2C, 2-Wire Serial 3mm Surface Mount -40°C~85°C CMOS 1.2mm 8542.39.00.01 Clock/Calendar e3 Matte Tin (Sn) - annealed DUAL NOT SPECIFIED 3.3V NOT SPECIFIED ISL12026A 8 YES 0.65mm R-PDSO-G8 Alarm, Leap Year 2.7V~5.5V HH:MM:SS (12/24 hr) I2C YY-MM-DD-dd 10μA~20μA @ 2.7V~5.5V 1.8V~5.5V
DS1306N DS1306N Rochester Electronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube no Obsolete 1 (Unlimited) 16 19.175mm Non-RoHS Compliant 16-DIP (0.300, 7.62mm) SPI unknown 7.62mm Through Hole -40°C~85°C 4.572mm Clock/Calendar e0 TIN LEAD DUAL 240 5V 20 16 NO 2.54mm R-PDIP-T16 COMMERCIAL Alarm, Leap Year, NVSRAM, Square Wave Output, Trickle-Charger 96B 2V~5.5V HH:MM:SS (12/24 hr) 0.032MHz SERIAL, 3-WIRE YY-MM-DD-dd 25.3μA~81μA @ 2V~5V 2V~5.5V
DS1685E-3 DS1685E-3 Rochester Electronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube no Obsolete 1 (Unlimited) 24 7.8mm Non-RoHS Compliant 24-TSSOP (0.173, 4.40mm Width) Parallel unknown 4.4mm Surface Mount 0°C~70°C CMOS 1.1mm Clock/Calendar e0 TIN LEAD DUAL 240 3V 20 24 YES 0.65mm R-PDSO-G24 COMMERCIAL Alarm, NVSRAM, Square Wave Output, Y2K 242B 2.7V~3.7V HH:MM:SS (12/24 hr) 8 0.032MHz 1 YY-MM-DD-dd 2mA @ 3V 2.5V~3.7V
X1286V14 X1286V14 Intersil (Renesas Electronics America) 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Bulk 2005 14 EAR99 70°C 0°C 5mm Non-RoHS Compliant Contains Lead TSSOP 2-Wire, I2C, Serial not_compliant 4.4mm CMOS 1.2mm 8542.39.00.01 e0 Tin/Lead (Sn/Pb) DUAL 5V 14 COMMERCIAL 0.65mm R-PDSO-G14 2.7V Timer or RTC Not Qualified 3/5V 5.5V 31.3kB HH:MM:SS:hh (12/24 hr) TIMER, REAL TIME CLOCK 0.032MHz 1/100SECOND Y YES I2C 1 YY-MM-DD-dd
DS3232MZ+ DS3232MZ+ Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 11 Weeks Surface Mount Tube 2012 yes Active 1 (Unlimited) 8 EAR99 5mm ROHS3 Compliant Tin No 8 8-SOIC (0.154, 3.90mm Width) I2C, 2-Wire Serial Unknown 1.5mm 4mm Surface Mount 506.605978mg -40°C~85°C CMOS Clock/Calendar DUAL 3.3V DS3232 1.27mm Timers or RTCs 2.5/4V Alarm, Leap Year, Square Wave Output, SRAM Clock 236B 2.3V~4.5V HH:MM:SS (12/24 hr) 0.032MHz SECONDS Y NO I2C 1 YY-MM-DD-dd 175μA @ 2.3V~4.5V 2.3V~4.5V
1337DVGI 1337DVGI Renesas Electronics America 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube Active 3 (168 Hours) ROHS3 Compliant 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) I2C, 2-Wire Serial Surface Mount -40°C~85°C Clock/Calendar IDT1337 Alarm, Leap Year, Square Wave Output 8-TSSOP 1.8V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 0.6μA @ 1.3V~1.8V
BQ3285LDSSTRG4 BQ3285LDSSTRG4 Texas Instruments 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tape & Reel (TR) Obsolete 2 (1 Year) 24 EAR99 3V 8.65mm ROHS3 Compliant Lead Free Gold No 24 24-SSOP (0.154, 3.90mm Width) Parallel 3.9mm Surface Mount 129.500622mg 0°C~70°C CMOS 1.73mm 8542.39.00.01 Clock/Calendar e4 DUAL 260 3V BQ3285 24 0.635mm Timer or RTC 3V Alarm, Daylight Savings, NVSRAM Clock 242B 2.7V~5.5V HH:MM:SS (12/24 hr) 8 0.032MHz SECONDS Y NO YY-MM-DD-dd 100μA @ 3V 2.4V~4V
MCP79521T-I/MN MCP79521T-I/MN Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 7 Weeks Surface Mount Tape & Reel (TR) 2012 Active 1 (Unlimited) 10 EAR99 3mm ROHS3 Compliant Lead Free No 10 10-WFDFN Exposed Pad SPI 750μm 3mm Surface Mount -40°C~85°C CMOS 8542.39.00.01 Clock/Calendar e3 Matte Tin (Sn) - annealed DUAL 3V MCP79521 0.5mm Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID Clock 64B 1.8V~3.6V HH:MM:SS:hh (12/24 hr) 5MHz YY-MM-DD-dd 1μA @ 1.8V~3.6V 1.3V~3.6V
M41ST87YMX6 M41ST87YMX6 STMicroelectronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tube yes Obsolete 3 (168 Hours) 28 EAR99 5V 18.01mm ROHS3 Compliant Lead Free 28 28-SOIC (0.295, 7.50mm Width) I2C, 2-Wire Serial 2.39mm 7.67mm Surface Mount -40°C~85°C CMOS 8542.39.00.01 Clock/Calendar e4 Nickel/Palladium/Gold (Ni/Pd/Au) DUAL NOT SPECIFIED 5V NOT SPECIFIED M41ST 28 1.27mm Timers or RTCs Not Qualified 5V Alarm, Leap Year, NVSRAM, Square Wave Output, Supervisor, Watchdog Timer Clock 128B 8 4.5V~5.5V HH:MM:SS:hh (24 hr) 0.032MHz 1/100SECOND Y NO I2C 1 YY-MM-DD-dd 1mA @ 4.5V~5.5V 2.5V~5.5V
DS1743W-150+ DS1743W-150+ Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube 2012 yes Obsolete 1 (Unlimited) 28 EAR99 38.225mm ROHS3 Compliant Lead Free 28 15.24mm CMOS 10.67mm 8473.30.11.80 e3 Matte Tin (Sn) DUAL PIN/PEG 260 3.3V NOT SPECIFIED 28 COMMERCIAL NO 2.54mm 2.97V 70°C Timers or RTCs Not Qualified 3.3V 3.63V 8 TIMER, REAL TIME CLOCK 0.032MHz SECONDS N NO PARALLEL, DIRECT ADDRESS
DS1685E-3+ DS1685E-3+ Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 6 Weeks Surface Mount Tube 2000 yes Active 1 (Unlimited) 24 EAR99 3V 7.9mm ROHS3 Compliant Lead Free No 24 24-TSSOP (0.173, 4.40mm Width) Parallel Unknown 950μm 4.5mm Surface Mount 0°C~70°C CMOS 8473.30.11.80 Clock/Calendar e3 Matte Tin (Sn) DUAL 260 3V DS1685 24 0.65mm Timer or RTC 3V Alarm, NVSRAM, Square Wave Output, Y2K Clock 242B 2.7V~3.7V HH:MM:SS (12/24 hr) 0.032MHz SECONDS Y YES 1 YY-MM-DD-dd 2mA @ 3V 2.5V~3.7V
M48T59Y-70MH6E M48T59Y-70MH6E STMicroelectronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tube Timekeeper® Obsolete 1 (Unlimited) 28 EAR99 18.1mm ROHS3 Compliant Lead Free 28-SOP (0.350, 8.89mm Width) with SNAPHAT Sockets Parallel 70GHz 8.56mm Surface Mount -40°C~85°C CMOS 3.05mm 8542.39.00.01 Clock/Calendar DUAL 260 5V 10 M48T59 28 1.27mm R-PDSO-G28 Timer or RTC Not Qualified 5V Alarm, Leap Year, Watchdog Timer Clock 70 ns 62.5kB 4.5V~5.5V HH:MM:SS (24 hr) 8 SECONDS Y NO YY-MM-DD-dd 3mA @ 4.5V~5.5V
Q427242110002RTC-72421B Q427242110002RTC-72421B EPSON 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 RoHS Compliant 18
X1226S8I X1226S8I Intersil (Renesas Electronics America) 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Bulk 2005 1 8 EAR99 85°C -40°C 4.9022mm RoHS Compliant Contains Lead SOIC 2-Wire, I2C, Serial 3.9116mm CMOS 1.7272mm 8542.39.00.01 e0 Tin/Lead (Sn/Pb) DUAL 240 5V NOT SPECIFIED 8 INDUSTRIAL 1.27mm R-PDSO-G8 2.7V Timer or RTC Not Qualified 3/5V 5.5V HH:MM:SS (12/24 hr) TIMER, REAL TIME CLOCK 0.032MHz SECONDS Y NO I2C 1 YY-MM-DD-dd
DS1642-70+ DS1642-70+ Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube 2009 yes Obsolete 1 (Unlimited) 24 EAR99 33.02mm ROHS3 Compliant Lead Free 24-DIP Module (0.600, 15.24mm) Parallel 15.24mm Through Hole 0°C~70°C CMOS 10.668mm 8542.39.00.01 Clock/Calendar e3 Matte Tin (Sn) DUAL 260 5V NOT SPECIFIED DS1642 24 NO 2.54mm R-PDMA-P24 Timer or RTC Not Qualified 5V Leap Year, NVSRAM 2KB 4.5V~5.5V HH:MM:SS (24 hr) 8 0.032MHz SECONDS N NO YY-MM-DD-dd 3mA @ 5V
DS1557WP-120IND+ DS1557WP-120IND+ Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 10 Weeks Surface Mount Tray 2003 yes Active 3 (168 Hours) 34 EAR99 3.3V ROHS3 Compliant Lead Free No 34 34-PowerCap™ Module Parallel Surface Mount -40°C~85°C CMOS 8473.30.11.80 Clock/Calendar e3 Matte Tin (Sn) DUAL 3.3V DS1557 34 Timer or RTC Alarm, Leap Year, NVSRAM, Watchdog Timer, Y2K Clock 512KB 2.97V~3.63V HH:MM:SS (24 hr) 8 0.032MHz SECONDS Y NO YY-MM-DD-dd 4mA @ 3.3V 3V
PT7C43190LE PT7C43190LE Diodes Incorporated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Obsolete 1 (Unlimited) 8 EAR99 4.4mm ROHS3 Compliant 8-TSSOP (0.173, 4.40mm Width) 3-Wire Serial 3mm Surface Mount -40°C~85°C CMOS 1.2mm 8542.39.00.01 Clock/Calendar DUAL 3V YES 0.65mm R-PDSO-G8 Timer or RTC Not Qualified 3/5V Alarm, Leap Year, Square Wave Output 1.35V~5.5V HH:MM:SS (12/24 hr) SECONDS Y NO SERIAL, 3-WIRE 1 YY-MM-DD-dd 0.6μA~14μA @ 3V~5V
M48T35AV-10MH6F M48T35AV-10MH6F STMicroelectronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tape & Reel (TR) Timekeeper® Obsolete 1 (Unlimited) 28 EAR99 3.3V 18.1mm ROHS3 Compliant Lead Free 28 28-SOP (0.350, 8.89mm Width) with SNAPHAT Sockets Parallel 256 kb 100GHz Surface Mount -40°C~85°C CMOS 3.05mm 8542.39.00.01 30mA Clock/Calendar DUAL 260 3.3V 10 M48T35 28 1.27mm Timer or RTC Not Qualified Leap Year 100 ns 32kB 3V~3.6V HH:MM:SS (24 hr) 8b 8b SECONDS N NO YY-MM-DD-dd 2mA @ 3V~3.6V
X1227S8I-2.7AT2 X1227S8I-2.7AT2 Intersil Corporation 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 3 Non-RoHS Compliant not_compliant CMOS e0 Tin/Lead (Sn/Pb) DUAL GULL WING INDUSTRIAL YES 1.27mm R-PDSO-G8 85°C -40°C Timer or RTC Not Qualified 3/5V 8 SECONDS Y NO SERIAL, 2 WIRE/I2C
DS17887-5 DS17887-5 Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Through Hole Tube 2010 no Obsolete 1 (Unlimited) 24 EAR99 5V 38.1mm Non-RoHS Compliant Contains Lead, Lead Free Tin No 24 24-DIP Module (0.600, 15.24mm) Parallel Unknown 10.67mm 18.29mm Through Hole 0°C~70°C CMOS 8542.39.00.01 Clock/Calendar e0 DUAL 240 5V DS17887 24 2.54mm Timer or RTC 5V Alarm, Daylight Savings, Leap Year, NVSRAM, Square Wave Output Clock 8KB 4.5V~5.5V HH:MM:SS (12/24 hr) 0.032MHz SECONDS Y NO 1 YY-MM-DD-dd 3mA @ 4.5V~5.5V 2.5V~3.7V
DS1307Z+T&R/C01 DS1307Z+T&R/C01 Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 2 Weeks Tape & Reel (TR) 2012 Obsolete 1 (Unlimited) 70°C 0°C 5V ROHS3 Compliant No 8 8-SOIC (0.154, 3.90mm Width) I2C, 2-Wire Serial Surface Mount 0°C~70°C Clock/Calendar DS1307 Leap Year, NVSRAM, Square Wave Output 8-SOIC Clock 56B 4.5V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 200μA @ 5V 2V~3.5V
PCF8563T/5,518 PCF8563T/5,518 NXP Semiconductors 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 7 Weeks Tape & Reel (TR) 2003 Active 2 (1 Year) 8 4.9mm ROHS3 Compliant 8-SOIC (0.154, 3.90mm Width) I2C, 2-Wire Serial 3.9mm Surface Mount -40°C~85°C CMOS 1.75mm 8542.39.00.01 Clock/Calendar e4 Nickel/Palladium/Gold (Ni/Pd/Au) DUAL 260 2V NOT SPECIFIED PCF8563 8 YES 1.27mm R-PDSO-G8 Timer or RTC Not Qualified 2/5V Alarm, Leap Year, Watchdog Timer 1.8V~5.5V HH:MM:SS (24 hr) 0.032MHz SECONDS Y YES I2C YY-MM-DD-dd 0.6μA~0.75μA @ 2V~5V
X1228S14Z-2.7 X1228S14Z-2.7 Intersil (Renesas Electronics America) 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Surface Mount Bulk 3 14 EAR99 70°C 0°C 8.6614mm RoHS Compliant Lead Free SOIC 2-Wire, I2C, Serial 3.9116mm CMOS 1.7272mm 8542.39.00.01 e3 MATTE TIN DUAL 260 5V 40 14 COMMERCIAL 1.27mm R-PDSO-G14 2.7V Timer or RTC Not Qualified 3/5V 5.5V 512B HH:MM:SS (12/24 hr) TIMER, REAL TIME CLOCK 0.032MHz SECONDS Y YES I2C 1 YY-MM-DD-dd
DS1742-70 DS1742-70 Rochester Electronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube no Obsolete 3 (168 Hours) 24 37.595mm Non-RoHS Compliant 24-DIP Module (0.600, 15.24mm) Parallel unknown 15.24mm Through Hole 0°C~70°C 8.51mm Clock/Calendar e0 TIN LEAD DUAL 240 5V NOT SPECIFIED 24 NO 2.54mm R-PDIP-P24 COMMERCIAL Leap Year, NVSRAM, Y2K 2KB 4.5V~5.5V HH:MM:SS (24 hr) 8 0.032MHz YY-MM-DD-dd 3mA @ 5V
DS1685EN-3+T DS1685EN-3+T Maxim Integrated 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Surface Mount yes 1 24 EAR99 7.8mm Non-RoHS Compliant Contains Lead 24 4.4mm CMOS 1.1mm 8473.30.11.80 e3 Matte Tin (Sn) DUAL GULL WING 260 3V NOT SPECIFIED 24 INDUSTRIAL 0.65mm 2.7V 85°C -40°C Timer or RTC Not Qualified 3V 3.7V 242B 8 TIMER, REAL TIME CLOCK 0.032MHz SECONDS Y YES PARALLEL, MUXED BUS 1
ISL12023IVZ ISL12023IVZ Renesas Electronics America 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube Obsolete 1 (Unlimited) ROHS3 Compliant 14-TSSOP (0.173, 4.40mm Width) I2C, 2-Wire Serial Surface Mount -40°C~85°C Clock/Calendar ISL12023 Alarm, Daylight Savings, Leap Year, SRAM 128B 2.7V~5.5V HH:MM:SS (12/24 hr) YY-MM-DD-dd 14μA~15μA @ 3V~5V 1.8V~5.5V
AS1801-BTDT AS1801-BTDT ams 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tape & Reel (TR) Obsolete 1 (Unlimited) RoHS Compliant 8 8-UFDFN Exposed Pad I2C, 2-Wire Serial Surface Mount 50.008559mg -40°C~85°C Clock/Calendar Alarm, Leap Year, Square Wave Output, Trickle-Charger Clock 1.8V~3.6V HH:MM:SS (12/24 hr) YY-MM-DD-dd 0.5μA @ 1.5V 0.9V~3.6V
ISL12057IUZ-T ISL12057IUZ-T Intersil 0.0000
RFQ

Min: 1

Mult: 1

0.00000000
ISL12023IVZ-T ISL12023IVZ-T Intersil 0.0000
RFQ

Min: 1

Mult: 1

0.00000000
Settings Need Help?
Top FAQ's

How can I quickly find answers to my questions?

Please visit the Help & Support area of our website to find information regarding ordering, shipping, delivery and more.

What is my Order Status?

Registered users can track orders from their account dropdown, or click here. *Order Status may take 12 hours to update after initial order is placed.

How do I return product?

Users can begin the returns process by starting with our Returns Page.

How do I find price and availability?

Quotes can be created by registered users in myLists.

How do I create a 'HK JDW' Account?

Visit the Registration Page and enter the required information. You will receive an email confirmation when your registration is complete.

United Kingdom/GBP Summary
Fast Shipping Fast Delivery

Orders are typically delivered to United Kingdom within 48 hours depending on location.

Free Shipping Free Shipping

Free delivery to United Kingdom on orders of £33 or more. A delivery charge of £12 will be billed on all orders less than £33.

Incoterms Incoterms

DDP (Duty and customs paid by HK JDW)

Payment Options Payment Types

Credit account for qualified institutions and businesses

Payment in Advance by Wire Transfer

Visa Mastercard American Express PayPal Apple Pay Google Pay

Marketplace Marketplace Product

More Products From Fully Authorized Partners

Average Time to Ship 1-3 Days, extra ship charges may apply. Please see product page, cart, and checkout for actual ship speed.

Incoterms: CPT (Duty, customs, and applicable VAT/Tax due at time of delivery)

For more information visit Help & Support