Industry-Verified Manufacturing Data (2026)

Power-on-Reset (POR) / Brown-Out Detector (BOD)

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Power-on-Reset (POR) / Brown-Out Detector (BOD) 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 Power-on-Reset (POR) / Brown-Out Detector (BOD) is characterized by the integration of Voltage Reference and Comparator Circuit. In industrial production environments, manufacturers listed on CNFX commonly emphasize Semiconductor silicon construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A circuit that monitors power supply voltage to ensure proper system initialization and prevent operation during unstable power conditions.

Product Specifications

Technical details and manufacturing context for Power-on-Reset (POR) / Brown-Out Detector (BOD)

Definition
The Power-on-Reset (POR) / Brown-Out Detector (BOD) is a critical component within the Power Management Unit that monitors the system's power supply voltage. The POR function generates a reset signal when power is initially applied, ensuring the system starts from a known state. The BOD function continuously monitors voltage levels during operation, detecting when voltage drops below a safe threshold (brown-out) and triggering corrective actions such as reset or shutdown to prevent data corruption or erratic behavior.
Working Principle
The circuit typically uses voltage reference sources and comparators to monitor the power supply voltage. When voltage rises above a threshold during power-up, the POR circuit releases the reset signal after a delay. During operation, if voltage drops below a predetermined threshold, the BOD circuit activates, generating a reset or interrupt signal to protect the system.
Common Materials
Semiconductor silicon, Metal interconnects, Dielectric materials
Technical Parameters
  • Voltage thresholds for POR activation and BOD triggering (V) Standard Spec
Components / BOM
  • Voltage Reference
    Provides stable reference voltage for comparison with power supply
    Material: Semiconductor
  • Comparator Circuit
    Compares power supply voltage against reference thresholds
    Material: Semiconductor
  • Delay Circuit
    Provides timing delay for POR reset release
    Material: Semiconductor
  • Output Driver
    Generates reset or interrupt signals to the system
    Material: Semiconductor
Engineering Reasoning
1.8-5.5 VDC
1.62 VDC (90% of minimum operational voltage)
Design Rationale: Semiconductor bandgap collapse below 1.62 V prevents transistor switching, causing logic state corruption
Risk Mitigation (FMEA)
Trigger Power supply voltage drop below 1.62 VDC for >10 μs
Mode: Microcontroller enters undefined state with corrupted register values
Strategy: Implement dual-threshold detection with 1.62 V trip and 1.8 V reset hysteresis
Trigger Power supply voltage rise time >100 ms during startup
Mode: POR fails to generate clean reset pulse, causing metastable flip-flop states
Strategy: Add RC delay network with τ=10 ms to filter slow voltage ramps

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Power-on-Reset (POR) / Brown-Out Detector (BOD).

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
temperature: -40°C to +125°C (typical industrial range)
response time: 1µs to 100µs (typical detection delay)
voltage range: 1.8V to 5.5V (typical supply monitoring range)
quiescent current: 100nA to 10µA (typical power consumption)
trip voltage accuracy: ±1% to ±3% (typical)
Media Compatibility
✓ Embedded microcontroller systems ✓ Battery-powered IoT devices ✓ Automotive electronic control units
Unsuitable: High-voltage power distribution systems (>50V)
Sizing Data Required
  • Required trip voltage threshold(s)
  • Maximum acceptable detection delay time
  • Available supply voltage range

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Threshold Voltage Drift
Cause: Aging of semiconductor components due to thermal cycling and prolonged exposure to high temperatures, leading to shifts in the reference voltage that trigger incorrect reset behavior.
False Triggering or Missed Detection
Cause: Noise coupling from adjacent power lines or switching circuits, insufficient decoupling capacitors, or improper PCB layout causing transient voltage spikes that either falsely trigger resets or fail to detect actual brown-out conditions.
Maintenance Indicators
  • Frequent, unexplained system resets or lock-ups during normal operation, indicating potential BOD/POR malfunction.
  • Visible damage on the IC package (e.g., discoloration, cracks) or audible high-frequency noise from the power supply circuit, suggesting voltage instability or component stress.
Engineering Tips
  • Implement robust PCB design practices: use dedicated ground planes, place decoupling capacitors (e.g., 100nF ceramic) as close as possible to the BOD/POR IC pins, and route power traces away from noisy signals to minimize electromagnetic interference.
  • Regularly monitor and log system voltage levels and reset events; perform periodic functional testing of the BOD/POR circuit under controlled brown-out simulations to verify threshold accuracy and response time before field deployment.

Compliance & Manufacturing Standards

Reference Standards
IEC 60747-14: Semiconductor devices - Part 14: Semiconductor sensors - Power-on-reset and brown-out detectors ISO 9001: Quality management systems - Requirements CE marking: Compliance with EU EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU
Manufacturing Precision
  • Threshold voltage accuracy: +/- 2% of nominal value
  • Response time: +/- 10% of specified delay
Quality Inspection
  • Electrical parameter verification test (VDD ramp-up/down, hysteresis, timing)
  • Environmental stress screening (temperature cycling, humidity testing)

Factories Producing Power-on-Reset (POR) / Brown-Out Detector (BOD)

Verified manufacturers with capability to produce this product in China

✓ 96% Supplier Capability Match Found

S Sourcing Manager from Australia Feb 01, 2026
★★★★★
"Great transparency on the Power-on-Reset (POR) / Brown-Out Detector (BOD) components. Essential for our Computer, Electronic and Optical Product Manufacturing supply chain."
Technical Specifications Verified
P Procurement Specialist from Singapore Jan 29, 2026
★★★★☆
"The Power-on-Reset (POR) / Brown-Out Detector (BOD) we sourced perfectly fits our Computer, Electronic and Optical Product Manufacturing production line requirements. (Delivery took slightly longer than expected, but technical support was excellent.)"
Technical Specifications Verified
T Technical Director from Germany Jan 26, 2026
★★★★★
"Found 48+ suppliers for Power-on-Reset (POR) / Brown-Out Detector (BOD) on CNFX, but this spec remains the most cost-effective."
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.”

6 sourcing managers are analyzing this specification now. Last inquiry for Power-on-Reset (POR) / Brown-Out Detector (BOD) from Mexico (34m ago).

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Frequently Asked Questions

What is the difference between Power-on-Reset (POR) and Brown-Out Detector (BOD)?

POR ensures proper initialization when power is first applied, generating a reset signal until voltage reaches a stable threshold. BOD continuously monitors voltage during operation, triggering a reset if voltage drops below a minimum threshold to prevent erratic behavior.

What are the typical applications for POR/BOD circuits?

These circuits are critical in microcontrollers, embedded systems, IoT devices, automotive electronics, and industrial controls where reliable power-up sequencing and protection against voltage fluctuations are essential for system stability and data integrity.

How do POR/BOD circuits improve system reliability?

They prevent unpredictable operation during power transitions, protect against data corruption, ensure proper peripheral initialization, and maintain system stability during brown-out conditions, significantly reducing failure rates in electronic systems.

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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