Industry-Verified Manufacturing Data (2026)

Real-Time Clock

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Real-Time Clock used in the Computer, Electronic and Optical Product Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Real-Time Clock is characterized by the integration of Quartz Crystal Oscillator and CMOS Counter Circuit. In industrial production environments, manufacturers listed on CNFX commonly emphasize Silicon semiconductor construction to support stable, high-cycle operation across diverse manufacturing scenarios.

An electronic component that keeps track of current time independently of the main system power.

Product Specifications

Technical details and manufacturing context for Real-Time Clock

Definition
A specialized integrated circuit within the Data Logging Module that maintains accurate timekeeping even when the main system is powered off, enabling timestamped data recording for process monitoring, compliance documentation, and event sequencing in industrial applications.
Working Principle
Utilizes a quartz crystal oscillator to generate precise timing signals, with a backup battery or capacitor to maintain timekeeping during power interruptions. The clock circuit counts oscillations to track seconds, minutes, hours, and date, providing synchronized time data to the logging system.
Common Materials
Silicon semiconductor, Quartz crystal
Technical Parameters
  • Timekeeping accuracy measured in parts per million deviation (ppm) Customizable
Components / BOM
Engineering Reasoning
-40°C to +85°C, 1.8V to 5.5V supply voltage, ±2ppm to ±20ppm timekeeping accuracy
Crystal oscillator stops oscillating below -55°C or above +125°C, timekeeping ceases below 1.6V supply voltage, accuracy degrades beyond ±50ppm
Design Rationale: Quartz crystal piezoelectric effect disruption at temperature extremes, CMOS circuit leakage current exceeding 1μA at voltage/temperature boundaries, crystal aging causing frequency drift >3.5ppm/year
Risk Mitigation (FMEA)
Trigger Electrostatic discharge exceeding 2000V HBM
Mode: CMOS gate oxide breakdown with leakage current >10μA
Strategy: Integrated ESD protection diodes with 8kV HBM rating, PCB layout with 2mm clearance from high-voltage traces
Trigger Sustained temperature cycling between -40°C and +85°C at 10°C/minute rate
Mode: Solder joint fatigue cracking with resistance increase >100mΩ
Strategy: SnAgCu solder with 0.5mm standoff height, thermal relief pads with 0.3mm thermal spoke width

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Real-Time Clock.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (solid-state component)
other spec: Supply Voltage: 1.8V to 5.5V, Accuracy: ±2ppm to ±20ppm
temperature: -40°C to +85°C
Media Compatibility
✓ Indoor Electronics Enclosures ✓ Automotive Dashboard Systems ✓ Industrial Control Panels
Unsuitable: High-Vibration Marine Engine Rooms
Sizing Data Required
  • Required Timekeeping Accuracy (ppm)
  • Operating Voltage Range (V)
  • Communication Interface (I²C/SPI/Parallel)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Crystal oscillator drift
Cause: Aging of quartz crystal, temperature fluctuations, or voltage instability affecting timing accuracy
Battery depletion
Cause: Primary cell exhaustion or leakage, leading to loss of timekeeping during power interruptions
Maintenance Indicators
  • Inconsistent or erratic system time display across connected devices
  • Audible system beeps or error messages indicating CMOS/RTC failure during boot-up
Engineering Tips
  • Implement periodic synchronization with a reliable external time source (e.g., NTP server) to compensate for drift
  • Use high-quality, long-life lithium batteries with leakage protection and monitor voltage levels during routine maintenance checks

Compliance & Manufacturing Standards

Reference Standards
ISO 9001:2015 Quality Management Systems IEC 60721-3 Environmental Conditions Classification CE Marking (EU Directive 2014/35/EU Low Voltage Directive)
Manufacturing Precision
  • Timekeeping Accuracy: +/- 2 seconds per day at 25°C
  • Frequency Stability: +/- 20 ppm over operating temperature range
Quality Inspection
  • Temperature Cycling Test (-40°C to +85°C)
  • Long-term Timekeeping Accuracy Verification (30-day continuous measurement)

Factories Producing Real-Time Clock

Verified manufacturers with capability to produce this product in China

✓ 93% Supplier Capability Match Found

P Procurement Specialist from Germany Jan 27, 2026
★★★★★
"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Real-Time Clock meets all ISO standards."
Technical Specifications Verified
T Technical Director from Brazil Jan 24, 2026
★★★★★
"Standard OEM quality for Computer, Electronic and Optical Product Manufacturing applications. The Real-Time Clock arrived with full certification."
Technical Specifications Verified
P Project Engineer from Canada Jan 21, 2026
★★★★★
"Great transparency on the Real-Time Clock components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

14 sourcing managers are analyzing this specification now. Last inquiry for Real-Time Clock from UAE (1h ago).

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Frequently Asked Questions

What is the primary function of a Real-Time Clock in electronic systems?

A Real-Time Clock (RTC) maintains accurate timekeeping independently of the main system power, providing continuous time/date tracking even during power interruptions using backup power sources.

Why do Real-Time Clocks use quartz crystal oscillators?

Quartz crystal oscillators provide precise frequency stability (typically 32.768 kHz) essential for accurate timekeeping, with low power consumption and excellent temperature stability for industrial applications.

How does the backup power interface work in RTC components?

The backup power interface (typically using batteries or supercapacitors) maintains power to the CMOS counter circuit during main power loss, preserving time/date data and ensuring uninterrupted timekeeping functionality.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

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