Comprehensive analysis of 3920 packaged alloy resistor manufacturers and products
>Provide multi-dimensional solutions for efficient current detection
In today's increasingly sophisticated electronic devices, alloy resistors packaged in 3920 have become an ideal choice for precise current detection in high-power and high current scenarios due to their compact structure, excellent performance, and high reliability. This article will provide you with a detailed introduction to several manufacturers producing 3920 volume alloy resistors and their product features, helping you make appropriate choices in your design.
Overview of 3920 encapsulated alloy resistors
3920 is a standard packaging size, and multiple manufacturers have developed unique alloy resistor products based on it. These types of resistors are usually manufactured using metal alloy technology, with low resistance values, high power processing capabilities, and excellent temperature stability. They are widely used in industrial automation, new energy vehicles, power management, and other fields.
Main manufacturers and product introductions
1. Ellon (Billion Energy)
RESI offers a variety of alloy resistor products in 3920 package, covering different power and resistance requirements:
ESR39F5WR003F02G: This is a 5W power type alloy sampling resistor with a resistance of 3m Ω, an accuracy of ± 1%, and a temperature coefficient of ± 50ppm/℃. This product adopts a patch installation method, which is suitable for use in applications with limited space and high power processing capabilities.
ESR39F8W0M70M02G: This 3920 packaged alloy resistor provides a rated power of 8W, with a resistance of 0.7m Ω and an accuracy of ± 1%. It is made of low resistance alloy material and has good current sensing performance, suitable for current detection applications that require high power processing.
2. Milliohm
Milliohm focuses on precision alloy resistor manufacturing, and its 3920 packaged products have excellent performance:
HoLRSC392012W0.2mR1% M50ppm: This product achieves a high-power processing capability of 12W in the 3920 package, with a resistance as low as 0.2m Ω, an accuracy of ± 1%, and a temperature coefficient as low as ± 50ppm/℃. Its high power density and stable temperature characteristics make it an ideal choice for high demand industrial applications.
3. Haoo Electronics
The 3920 alloy resistor launched by Haoou Electronics achieves excellent performance balance in a compact space:
HoSS39205W1mR1%: This product adopts the standard 3920 package and achieves 5W rated power and 1m Ω resistance in a compact design, with an accuracy of ± 1%. It adopts a special alloy resistor material, which has excellent high temperature resistance and oxidation resistance characteristics. After more than 1000 hours of high temperature and high humidity aging testing, its resistance to mechanical vibration and current shock far exceeds that of ordinary surface mount resistors. Its ultra-low temperature drift coefficient of ± 50ppm/℃ ensures stable data over a wide temperature range from 55 ℃ to+170 ℃.
4. TT Electronics / Welwyn
Welwyn brand under TT Electronics provides professional 3920 alloy resistor solutions:
LRMAP3920 series: This is an automotive grade surface mount low resistance metal alloy resistor with a resistance range from 0.2m Ω to 2m Ω and a rated power of up to 4W (substrate rated power can reach up to 10W). This series has excellent long-term stability, a resistance tolerance of ± 1%, and optional TCR values including ± 50ppm/° C, ± 60ppm/° C, ± 70ppm/° C, ± 150ppm/° C, ± 200ppm/° C, with inductance<3nH. The product complies with AECQ200 standards and operates within a temperature range of 55 ° C to 170 ° C, making it ideal for current sensing applications in power electronic devices in the automotive and industrial fields.
Common advantages of 3920 alloy resistors
The 3920 alloy resistors from different manufacturers have the following core advantages:
Compact size: 3920 standard package saves PCB space and adapts to high-density circuit layouts
High power density: Achieve up to 12W power processing capability in a small package
Low resistance measurement: The lowest resistance can reach 0.2m Ω, accurately capturing small voltage drop signals
Excellent thermal stability: Low temperature drift coefficient (± 50ppm/℃) ensures stable performance over a wide temperature range
High reliability: Special alloy materials provide excellent high temperature resistance, oxidation resistance, and mechanical vibration resistance
Application field
3920 alloy resistors are widely used in various high demand electronic devices:
New energy vehicles: motor controller current detection, on-board charger (OBC), BMS battery management system
Industrial automation: servo drives, frequency converters, PLC modules
Consumer electronics: fast charging adapters, drone power systems, smart home appliances
Renewable energy: photovoltaic inverters, energy storage system current monitoring
Power electronic equipment: current induction, especially in situations where high precision and stability are required
Selection Recommendations
When choosing a 3920 alloy resistor, the following factors need to be considered:
Power requirements: Select different products ranging from 4W to 12W according to the power requirements of the application scenario
Resistance accuracy: Most 3920 alloy resistors provide an accuracy of ± 1%, ensuring that the measurement accuracy requirements are met
Temperature coefficient: Choose an appropriate temperature coefficient based on the range of temperature changes in the working environment, ranging from ± 50ppm/℃ to ± 200ppm/℃
Cost and delivery time: Consider project budget and product supply situation, choose the most suitable supplier
summary
The alloy resistor packaged in 3920 provides engineers with a compact and efficient current detection solution. Ellon、Milliohm、 Manufacturers such as Haoou Electronics and TT Electronics/Welwyn offer distinctive products covering power ranges from 4W to 12W, with a minimum resistance of 0.2m Ω, meeting the needs of different application scenarios.
When selecting a suitable 3920 alloy resistor, it is necessary to comprehensively consider factors such as power processing capability, resistance accuracy, temperature coefficient, cost-effectiveness, and supply stability to ensure the efficient and reliable operation of the electronic system. Whether it is industrial equipment that has strict requirements for space and performance, or new energy systems that require high reliability, 3920 alloy resistors can become an indispensable "current sentinel" in the hands of engineers.
