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Point 1. What is the impedance difference between MnZn ferrite and NiZn ferrite common mode inductors at 30MHz frequency?
Answer: The permeability of MnZn ferrite can reach 5,000,
  but permeability may start to decline at 20kHz frequency. At 30MHz frequency, its permeability has decreased significantly, resulting in relatively low impedance.
  NiZn ferrite has low initial permeability but maintains permeability unchanged at high frequencies (100MHz). At 30MHz, it can maintain certain permeability, so impedance is relatively high. However, specific...

Question 1. How to calculate the saturation margin of common mode inductors based on the circuit's maximum surge current?
Answer: The saturation margin of common mode inductors is a key parameter to ensure they do not enter magnetic saturation under surge current. Calculation steps are as follows:
 
Key logic: Differential mode currents generate magnetic fluxes that cancel each other in common mode inductors, usually not causing saturation; while common mode surge currents superimpose magnetic flux, potentially saturating the core. Margin needs to be achieved through core material selection and increasing coil turns or magnetic circuit cross-sectional area.
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Question 2. What is the...

The self-resonant frequency (SRF) of a common mode inductor is determined by its inductance and parasitic capacitance. When noise frequency approaches SRF, impedance reaches peak, and filtering effect is optimal; beyond SRF, parasitic capacitance dominates, impedance decreases, and filtering performance deteriorates. Design must ensure SRF is higher than target noise frequency band.

On July 30, 2025, in Shanghai, the Thai Electronics Industry Association organized representatives from 29 well-known Thai companies to visit the Shanghai R&D Center of Intime Electronics for research and investigation, with the aim of strengthening exchanges and cooperation between China and Thailand in the field of electronics Ms. Serena, the head of foreign trade at Yintai Electronics, received the delegation throughout the entire process and provided a detailed introduction to the company's core products and cutting-edge research and development projects. The two sides had in-depth discussions on technical cooperation and market expansion   Focusing on innovation: The Thai delegation attaches great importance to the research and development achievements of Yintai Electronics During the visit, representatives of Thai companies expressed their appreciation for the research and development capabilities of Intime Electronics

In the current era of rapid growth in electronic waste, transient suppression diodes (TVS), as key protective components of electronic devices, are not only important for resource conservation but also for reducing electronic pollution. The high-purity silicon material and precious metal electrodes (such as gold-plated pins) contained in TVS can achieve a material regeneration rate of over 80% through scientific recycling technology “ Design Production Recycling; The closed-loop management model can fundamentally reduce the impact of electronic waste on the environment! 1. Chemical exfoliation method: for silicon materials&

What are the Three Main Categories of EMI Inductor Core Materials?
First Category: Ferrite Cores
Mn-Zn ferrite, Ni-Zn ferrite
Second Category: Metal Powder Cores
Iron Silicon Aluminum (Sendust), Iron Nickel Molybdenum (MPP), Iron Silicon (Fe-Si), Carbonyl Iron Powder Core (Carbonyl Iron)
Third Category: Nanocrystalline Alloys
Iron-based nanocrystalline alloy, iron-based amorphous
 
What are the Ten Evaluation Indicators for Magnetic Materials?
1. Permeability (μ)
Definition...

      Wolfspeed, which once held over 60% of the market share, officially announced plans to apply for bankruptcy protection in court for debt restructuring. That year, the third-generation semiconductor unicorn, according to the latest disclosed bankruptcy restructuring agreement, Wolfspeed's total debt was $6.5 billion before the restructuring. As part of a restructuring agreement reached with creditors. Wolfspeed plans to obtain $275 million in new financing through bankruptcy restructuring and reduce approximately 70% of its debt (approximately $4.6 billion) to alleviate its financial pressure. public

One  China Mobile's centralized procurement project for 5G wireless main equipment from 2025 to 2026: On June 11th, the bidding was opened, and on June 12th, China Mobile Procurement and Tendering Network released a public announcement of the selected candidates. Huawei, ZTE, Shanghai Nokia Bell, CITIC Mobile, and Ericsson won the bid. Among them, the candidates for transaction in the 2.6GHz/4.9GHz frequency band are Huawei Technologies Co., Ltd. and Huawei Technology Services Co., Ltd. consortium, ZTE Corporation, Ericsson (China) Communications Co., Ltd., and CITIC Mobile Communications

Open Alliance Test refers to a series of tests conducted by the OPEN Alliance for automotive Ethernet-related devices and systems, aimed at ensuring compatibility and interoperability between vehicle internal network components. Details are as follows:
OPEN Alliance
OPEN Alliance SIG is a non-profit open industry alliance jointly established by OEMs, tier1, and tier2, mainly consisting of over 160 automotive OEMs and suppliers worldwide, dedicated to promoting and applying Ethernet technology in automotive environments.