Times：2026-03-17 16:59:36
In core electronic devices such as industrial controls, switching power supplies, and intelligent instruments, optocouplers serve as key components for achieving electrical isolation and suppressing interference. Their performance stability directly determines the reliability and safety of the entire system. In circuit design, the core of optocoupler selection lies in parameter matching and scenario adaptation. The Aote AT3H7 series, as a transistor output type optocoupler, excels in key performance indicators, perfectly meeting the stringent requirements of industrial-grade applications.
1. Characteristic parameters of AT3H7
As a core indicator of isolation devices, the AT3H7 series achieves an isolation voltage of 3750Vrms, significantly exceeding the requirements of conventional applications. It effectively isolates high and low voltage circuits, preventing interference from the high voltage side from infiltrating the low voltage control circuit, thus establishing the first line of defense for system safety. Additionally, its collector-emitter breakdown voltage BVCEO is ≥80V, ensuring no breakdown failure in complex voltage environments and enhancing the circuit's fault tolerance.
The current transfer ratio (CTR) is a key parameter for the efficiency of optocoupler signal transmission. The signal transmission is precise and efficient, and it offers multiple options for A, B, C, and D positions. Engineers can flexibly match different load requirements to avoid issues such as poor dynamic performance and system instability caused by improper CTR selection.
II. Core Product Parameters
Under the trend of miniaturization and environmental protection, the AT3H7 series precisely meets market demands. Utilizing a 4-pin SSOP4 package, it boasts a volume reduction of over 40% compared to traditional DIP packaging, making it particularly suitable for high-density PCB board design and enabling the miniaturization of smart terminals and portable devices.
1.Operate with no pressure under wide temperature range
The AT3H7 series, with its ultra-wide operating temperature range of -55℃ to ±110℃, easily copes with extreme high and low temperature scenarios. It effectively avoids signal distortion or device failure caused by temperature changes, significantly enhancing the environmental adaptability and service life of end products.
2.Reinforced insulation + high isolation voltage
The AT3H7 series not only strictly complies with the reinforced insulation standard, but also boasts a high isolation voltage of 3750Vrms, which can completely block electrical interference between the input and output terminals, thereby preventing equipment damage or personnel safety hazards caused by high voltage infiltration from the source.
3.High gain and wide dynamic range, ensuring precise and efficient signal transmission
The "accuracy" and "efficiency" of signal transmission are another highlight of the AT3H7 series. This series utilizes a high-sensitivity phototransistor design and supports multi-level CTR selection, accurately meeting the signal amplification needs of different scenarios. It provides strong support for high-precision scenarios such as measuring instruments and sensor signal processing.
III. Application Scenarios
?With its comprehensive advantages of "wide temperature range, high isolation, high precision, and small size", the AT3H7 series has broken the monopoly of imported brands and is widely used in multiple core fields. It has become the trusted choice for customers in various industries to replace imports and reduce costs while increasing efficiency.
Currently, Aote AT3H7 has achieved sufficient in-stock supply, which can fully cover the diversified needs of enterprises such as small-batch sampling, medium-batch mass production, and emergency replenishment. In-stock inventory can effectively shorten the procurement cycle, avoid production stagnation caused by component shortages, and help enterprises improve production efficiency and accelerate product launch timing.
IV. Full series of transistor optocouplers
Taiwan AOTE Semiconductor Technology Co., Ltd. (hereinafter referred to as AOTE), established in 2018, has its headquarters and R&D laboratories located in Taichung City, Taiwan Province. The establishment of its subsidiary, Guangdong AOTE Semiconductor Co., Ltd., marks the expansion of AOTE Semiconductor Company in the domestic market. Shenzhen, as the core region of China's semiconductor industry, boasts convenient transportation and a favorable industrial ecological environment, providing strong support for the company's development. The subsidiary is primarily responsible for selling products to meet the needs of different regional markets. The establishment of the subsidiary is not only conducive to cooperation with domestic customers but also enables a better understanding and satisfaction of the needs of the Chinese market.
The company has obtained ISO9001 and ISO14001 quality management system certifications. With significant investment in research and development and design, our existing products can be benchmarked and compatible with multiple series of optoelectronic couplers from Europe, America, Japan, and Taiwan. All products comply with EU ROHS, REACH, and SGS environmental directives and have passed multiple international certifications such as China Quality Certification Center (CQC), German VDE, and American UL safety certifications.
