Jaron Semiconductor, 6th Floor, Zhenqian Building, no. 80 Gongye Road, Longhua District, Shenzhen (2026)

14/07/2025

Defend Your Motor Circuits from Surges – Discover the Power of MOVs!

Brushed DC motors are widely used in home appliances, toys, and automotive electronics—but they often generate sparks and surge noise during brush switching.

That’s where MOVs (Metal Oxide Varistors) come in—offering a powerful solution for surge and EMI suppression.

How They Work
MOVs remain in high-impedance mode under normal voltage. Once a surge hits and the threshold is exceeded, resistance drops sharply—allowing large current to pass and clamping voltage instantly.

Best Fit Applications
Small devices (e.g. toothbrushes, control boards) → Use SMD-type MOVs
ndustrial motors, EV drives → Use DIP-type MOVs

Advantages
Fast response time
High surge current capacity
Reduces need for filter capacitors
Simple integration, low cost

Test Comparison
Without protection → EMI test fails, circuit at risk.
With MOV + BDL combo → Surge suppressed, test passed, system stabilized.

Want to boost your EMC performance effortlessly? Let MOVs be your first line of defense.

www.jaronsemi.com

04/07/2025

🌩️Why are more engineers choosing Gas Discharge Tubes (GDTs) for surge protection?

In critical systems such as communications, power supply, and monitoring, a lightning strike or transient voltage may cause equipment paralysis, data loss, and even fire hazards.

GDT (gas discharge tube), as a gap-type overvoltage protection component, is becoming an "invisible guard" to cope with these challenges.

🔍 GDT's advantages include:
✨ High voltage tolerance: DC breakdown voltage up to kilovolts
⚡ High surge current capability: Can withstand tens of thousands of amperes of surge current
📶 Low parasitic capacitance: less than 1 pF, suitable for high-speed communication ports
🛡️ Self-restoring: Automatic recovery after surge, does not affect normal signal transmission

✅ Common application scenarios:

Lightning protection for communication ports such as telephone lines, optical fibers, and ADSL

DC power distribution systems, UPS power surge protection

Protection for exposed ports such as outdoor cameras and traffic equipment

Safety protection for interfaces such as industrial control PLCs and relay inputs

🛠️ Multi-level protection matching recommendations:
The combination of GDT + MOV + TVS is widely used in the three-level surge protection system for power and signal lines to build a reliable and safe barrier for equipment.

🔧 Although the response speed of GDT is slightly slower than that of TVS and MOV, its strong electrical isolation and impact resistance make it particularly outstanding in high-energy lightning protection.

📩 Want to know more about gas discharge tube solutions? Welcome to leave a message or contact us!

🔗www.ntclcr.com

20/06/2025

🔍 What is a PPTC Fuse?
A PPTC (Polymer Positive Temperature Coefficient) resettable fuse is a self-healing circuit protector. When overcurrent or a short circuit occurs, it heats up, increases resistance, and limits the current flow — effectively shielding your device.
Once things cool down and return to normal? It resets itself. No need for replacements. No technician required.
🛡 Why is PPTC Smart Protection?
✅ Automatic Reset – No downtime, no service calls
✅ Fast Response – Reacts in milliseconds
✅ Compact Size – Easy to integrate into small devices
✅ Eco-Friendly – Reusable, waste-reducing solution
✅ Cost-Efficient – Long-term savings for manufacturers and users
⚙ Where You’ll Find It
PPTC fuses are quietly guarding many of your everyday devices:
💻 Laptops and USB ports
🔋 Battery packs and charging cables
🚗 Automotive electronics (heated seats, sensors)
🛠 Power tools and small appliances
💡 LED lighting and smart home systems
💬 Drop a comment or message us — we’re here to help!

13/06/2025

⏳Varistors are nonlinear resistors that rapidly decrease their resistance when the voltage exceeds a certain threshold, diverting excessive current and safeguarding other circuit components. Their key advantages include high voltage endurance, fast response, strong surge handling, and large current capacity.
📦Varistors are widely used across various sectors. The main application areas include:
🖥Home Appliances：Used in devices like TVs, air conditioners, computers, refrigerators, and washing machines, varistors protect the power input from surges and voltage fluctuations.
📱Communication Devices：In devices such as mobile phones, routers, and base stations, they prevent damage from lightning strikes and voltage spikes.
🚎Industrial Control & Automotive Electronics：Industrial controllers, automotive ECUs, sensors, and power supplies integrate varistors to protect sensitive components from transient overvoltage.
🔌Power Supplies & Outlets：Power strips, transformers, and adapters use varistors to enhance overvoltage protection and product safety.

🚗 Protect your car electronics and home appliances from lightning and voltage surges with reliable varistors!

🧠 Smart protection starts at the circuit level.

07/06/2025

Working Principle of the LED Driver Circuit
This is a simple LED driver circuit designed to operate directly from an AC mains supply. It is compact and cost-effective, ideal for low-power LED lighting applications.
The circuit starts with a two-prong plug connected to the AC mains power supply.
A 1µF 250V metalized film capacitor (red component) acts as a current-limiting dropper. A 1MΩ resistor in parallel helps discharge the capacitor when power is off, improving safety.
A 680V Metal Oxide Varistor (MOV) is used to absorb voltage spikes and prevent them from damaging the circuit.
A 0.22Ω 2W resistor limits inrush current when the circuit is first powered on, protecting components like the rectifier and capacitor.
A bridge rectifier converts AC to DC, with two terminals for AC input () and two for DC output (+ and -).
A large electrolytic capacitor (likely 4.7µF 400V) smooths the rectified DC voltage, ensuring stable operation of the LEDs.
The LED board contains multiple LEDs arranged in a circular layout. A 10Ω 2W resistor is connected in series to limit current and protect the LEDs.
This transformerless circuit lacks electrical isolation and must be handled carefully to avoid electric shock.

28/05/2025

In-House Manufacturing, Cost Optimization, Guaranteed Quality
Give you a satisfactory price

If you need cost optimization, you can contact us as soon as possible and we will give you a suitable solution.

📞WhatsAPP: +86 199 2921 8123
📩Email: [email protected]

26/05/2025

Save more with high-performance, low-cost NTC thermistors.
🔧 MF72-NTC Thermistors | Professional Inrush Current Suppression Solution
⚡ Protect Your Electronics from High Inrush Current at Startup
When AC power is first applied, inrush current can surge to dozens of times the normal level — potentially damaging rectifier bridges, electrolytic capacitors, and other sensitive components.

📌 The MF72-NTC thermistor utilizes its negative temperature coefficient to limit current during initial power-on and then quickly drop in resistance to minimize energy loss during normal operation.

🔍 Key Technical Features
✅ Effective Initial Current Limiting
High resistance at room temperature (R25 from 2.5Ω to 47Ω) ensures strong surge suppression at startup.

✅ Rapid Self-Heating and Low Power Loss
Once powered, resistance drops quickly for minimal impact on normal circuit operation.

✅ Wide Current Handling Range
Rated for inrush currents from 0.3A up to over 8A, suitable for various power levels.

✅ High Reliability and Long Life
Strong tolerance to surge stress, stable in frequent power cycling environments.

🔍 Typical Applications
🔌 Switch-Mode Power Supplies (SMPS)
Protects rectifier bridges and capacitors from surge damage.

🔌 LED Lighting Drivers
Limits startup surge, extends driver and LED lifespan.

🔌 Industrial Power Systems
Used in PLCs, servo controllers, and motor drives for safe startup.

🔌 Charging Equipment
Ideal for EV charging stations, BMS and high-power chargers.

📞 Contact us today for datasheets, selection assistance, and free samples!
🔗 www.jaronsemi.com
WhatsAPP: +86 199 2921 8123

24/05/2025

📢【Smart Meter Shield: MOVs in Action】
🔍 Ever wonder what keeps a smart meter safe during a lightning strike?
💥 In less than a microsecond, a Metal Oxide Varistor (MOV) detects an incoming surge and acts—fast.
It doesn’t beep, it doesn’t blink—but it saves your system from catastrophic failure.
🏠 Real-World Applications
When your building gets struck by lightning
⚡When the grid has an unstable reconnect after outage
🔌When industrial machinery powers down and surges spike
↯Every one of these moments can damage your meter. Unless… you have the right MOV inside.
💬 Beyond the Numbers
📐 The size of the MOV determines how much energy it can absorb.
🔋 The clamping voltage ensures it kicks in only when needed.
🔧 But the most important choice? Matching it to your application environment.
📊 The infographic gives you the specs.
LCRR14D471K This series has a wide range of applications
🧠 This post helps you understand why and where they matter.
📩 Want us to help you pick the right one?
🔁 Share this with your design team—it might save a board or two.
📞 Let's Talk Protection – We’re Here for You
Whether you're designing your first smart meter, upgrading surge protection, or just comparing MOV specs—we’ve got your back.
💬 Need help with model selection?
🧩 Facing layout limitations on your PCB?
⚙️ Want custom solutions for your high-voltage project?
👉 Message us now, and our team will reply with the right solution—not just answers.

WhatsAPP: +86 19929218123
Website: www.jaronremi.com

23/05/2025

🔧 About Us
We are a professional manufacturer and supplier of high-performance electronic components. Our core product lines include varistors, NTC thermistors, and temperature sensors, designed for a wide range of applications such as power systems, consumer electronics, industrial equipment, automotive electronics, and smart appliances.
💡 With a strong focus on quality, customization, and international standards, we are committed to delivering reliable and cost-effective solutions to partners around the world.
🚀 We're expanding into electromagnetic interference (EMI) and electromagnetic compatibility (EMC) solutions, along with new lines of semiconductor components to meet evolving industry needs.
📦 OEM Services
From design to delivery, we support your project at every stage.
📩 Get in touch for datasheets, free samples, and global collaboration.

WhatsAPP：+86 19929218123
Email：[email protected]
Website：www.jaronsemi.com

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