Home > Industry Information > SE150180G: Key Role And Application Analysis Of High-Performance Aluminum Electrolytic Capacitors
In modern electronic devices, aluminum electrolytic capacitors are indispensable components in power management systems,
responsible for filtering, energy storage and voltage stabilization. The SE150180G is a highly reliable aluminum electrolytic capacitor
produced by well-known manufacturers such as Rubycon or Nichicon, and is widely used in industries, automotive electronics,
and renewable energy, among others. This article will introduce it from three aspects: its core features, comparisons with similar products, and typical application scenarios.
The SE150180G is a 150V/180µF aluminum electrolytic capacitor, specifically designed for medium and high voltage, high ripple current scenarios. Its main features include:
High voltage resistance and large capacity
Rated voltage 150V, capacitance 180µF, suitable for medium and high power power supply systems.
The tolerance is ±20%, and the stability meets the industrial-grade requirements.
Low equivalent series resistance (ESR)
The ESR value is as low as 120 milliohms (@100Hz), reducing energy loss and enhancing power supply efficiency.
The low ESR characteristic makes it perform well in high-frequency switching power supplies.
Long service life and high-temperature resistance
It can last up to 2000 hours in an environment of 105℃ and is adaptable to harsh working conditions.
The operating temperature range is -40℃ to 105℃, covering extreme environmental requirements.
High ripple current capability
It can withstand a ripple current of 1.8A at a frequency of 100Hz and 1.2A at 100kHz, making it suitable for high-frequency switching circuits.
Packaging and mechanical properties
Radial lead packaging, with a diameter of 18mm and a height of 35mm, is convenient for PCB installation.
Explosion-proof design (such as pressure relief valves) ensures safety in case of overpressure.
The SE150180G is a medium and high-voltage aluminum electrolytic capacitor. The comparison with similar specification products (such as EPCOS, Panasonic) is as follows:
Model SE150180G B43642A5477M (EPCOS) EEU-FR1E181 (Panasonic)
Rated voltage/capacitance: 150V/180µF, 450V/470µF, 150V/180µF
ESR (@100Hz) 120mΩ 180mΩ 150mΩ
Ripple current (100Hz) : 1.8A, 2.2A, 1.6A
Lifespan (105℃) : 2000 hours, 3000 hours, 2000 hours
Package size: 18mm×35mm (radial), 30mm×52mm (radial), 16mm×31mm (radial)
Comparison conclusion:
The SE150180G outperforms similar 150V products in ESR and high-frequency performance, making it suitable for high-frequency switching power supplies.
If a higher voltage (such as 450V) is required, the EPCOS B43642A5477M is more suitable. The Panasonic model is more compact in size.
Industrial power supplies and frequency converters
Application scenarios:
Industrial frequency converters: Used to regulate the speed of motors (such as fans, water pumps, conveyor belts).
Servo driver: Provides stable DC bus voltage in automated equipment.
PLC power module: Provides clean direct current for the control system.
Function:
Filtering: Remove the high-frequency noise generated by IGBT/PWM switches.
Energy storage: Buffering voltage fluctuations when the load suddenly changes and protecting power devices.
Advantages: Low ESR (120mΩ) reduces heat generation and extends equipment lifespan.
2. Automotive electronics
Application scenarios:
On-board charger (OBC) : AC-DC conversion for electric vehicle AC charging piles.
DC-DC converter: Reduces the voltage of high-voltage batteries (such as 400V) to 12V/24V for use in on-board devices.
Motor controller: The DC link support for the inverter driven by electric vehicles.
Function:
Voltage stabilization: Suppressing voltage spikes during battery charging and discharging.
High-frequency filtering: Dealing with the fast switching noise of the motor controller (such as 20kHz PWM).
Advantages: High-temperature resistance (105℃) and seismic design, suitable for the engine compartment environment.
3. Renewable energy system
Application scenarios:
Photovoltaic inverter: The DC-AC conversion link of solar panels.
Wind power converter: Irregular power regulation of wind turbines.
Energy storage System (ESS) : Charging and discharging management of battery packs.
Function:
Dc link filtering: Smooth the fluctuating voltage at the output of photovoltaic/wind turbines.
Energy buffering: Provides short-term energy support during transient faults in the power grid.
Advantages: High ripple current capacity (1.8A), suitable for intermittent energy input.
1. Key parameter matching
Prioritize matching voltage (150V), capacity (180µF), and ESR (≤120mΩ).
For high-frequency applications, attention should be paid to the ripple current value at 100kHz.
2. Lifespan and temperature optimization
For high-temperature environments (such as automotive electronics), select models with a temperature of 105℃ for over 2000 hours.
3. Recommended alternative models
Panasonic EEU-FR1E181 (similar specification, ESR slightly higher).
Nichicon LGU1E181MELA (long-life type, 105℃/5000 hours).
The SE150180G is a medium and high-voltage aluminum electrolytic capacitor that strikes a balance between performance and cost. Its low ESR,
high ripple current and industrial-grade reliability make it an "invisible hero" in power supply design. Although solid-state capacitors and polymer capacitors
are gradually replacing traditional electrolytic capacitors in some fields, the SE150180G still has irreplaceable advantages in high-voltage and large-capacity demand scenarios.
Industry Information
