Real-time clock (RTC) is an electronic device that can output actual time like a clock. It is usually an integrated circuit, so it is also called a clock chip. This term is often used to refer to a device that has this function in a personal computer, server, or embedded system, but many systems that require precision will have this feature.

Frequency Characteristics

Dimensions

The real-time clock uses a quartz crystal resonator as its source, but some use the frequency of the AC power source. If a quartz crystal resonator is used, the frequency of the majority of the resonator will be the same as the resonator frequency in the quartz clock, which is 32.768 kHz. This frequency is exactly 215 times per second, which is convenient for use with a simple binary counter.

A system without a real-time clock can also calculate the actual time, but using a real-time clock has the following advantages:
1.Low power consumption (especially important when using auxiliary power)
2.Let the main system handle more time-sensitive work
3.Sometimes it is more accurate than the output of other methods.

FAQ:

1. How does A-Crystal support you: Free samples , OEM, Reliability test report, Product return report (8D report), RoHS substances compliant, REACH substances compliant

2. What’s ACrystal’s performance Certificate? ISO 9001 quality management [9001 ISO 2015], ISO14001

3. How many Production patents ACrystal has: 16 

4. Payment terms : T/T in advance

5. Which express service: DHL, UPS, TNT, FedEx

6. ACrystal’s monthly production capacity for 32.768 oscillators:1kk 

7. What’s the MOQ/Standard packing quantity: 3k per reel ( acrystal 32.768)

8. Lead Time for the 32.768 khz clock oscillator: 3days-14days

9. ACrystal produces tuning fork crystals with 32.768 khz xtl.

10. Factory address: 17th Building, A District, Feiyue Technology Innovation Park, Jiaojiang, Taizhou, Zhejiang, China. ZIP:318014

11. What is the lead time for:

12.Free crystal samples and shipment fee ?

We provide you 20pcs free quartz crystals samples [no free samples for oscillators and TCXO,VCXO, and VCTCXO]. Customers to pay only the shipping fees.

13. What basic information to provide when ordering a crystal?

14. Main sources of ACrystal component parts

16. PMX145/206/308SMD    Production & Test Equipment

17. Quality  Management

Ø A-crystal supports its customer base through the pursuit of continuous quality improvement.

Ø World-Class leading product designs.

Ø  ISO-9001 certified production and Quality management

Ø Reliability testing for all products to ensure quality stability.

Ø Strict quality evaluation of all raw material suppliers

Ø Customers satisfaction feedback program for quality assurance

Ø Complete sales & after-sales quality service and customer care

Ø Regular employee trainings to achieve continuous quality improvement.

Management participation programs to promote  commitment to highest quality standards and customer focus.

18. how’s a-crystal’s  Customer Care : returns process

19. how to see acrystal production line radio on tube :https://www.acrystals.com/about-us_d1

20. how to attach a tuning fork to PCB/Acrystal recommended Solder Reflow?

Soldering Characteristics

A variety of methods can be used to solder A-Crystal products to PCB and substrates

Ø Wave or Dual Wave

Ø Hot Air or Convection Flow

Ø Vapor Phase Reflow

Ø Infrared Reflow

Ø Bubble Solder Immersion

Ø Tohers (Laser,etc)

21. What’s the pictures of the Acrystal time quartz watch XTAL/ timing oscillator/tuning fork resonator?

22. Package:

Package is made of corrugated paper with thickness of 0.8cm.

Each Package contains 10 inner boxes, each box has 1 plastic reel

Each reel has 3000 pieces of Crystal Resonators

Therefore Total package contains 30,000 pieces of crystal resonators.

Large package contains 20 inner boxes （60, 000 pieces of crystal resonators）

23. Why ACrystal?

Pricing:   Highly competitive pricing

Quality: ISO 9001 certified quality system and knowledgeable quality assurance team.

Delivery : Short lead-time for standard products and on time delivery for customized products.

Service:   Comprehensive skilled technical support