SMAJ40CA
Manufacturer: BOURNS
Part Number: SMAJ40CA
| Attribute | Value |
| cate_name | TVS Diodes & ESD Suppressors |
| Datasheet | SMAJ40CA BOURNS |
| rohs | Compliance |
| reference_package | SMA(DO-214AC) |
| mounting | SMD mount |
| application_level | |
| lifecycle | On sale |
| spm | Tape & Reel |
| min_operating_temperature | -55℃(TJ) |
| max_operating_temperature | 150℃(TJ) |
| length | 4.57mm(Max) |
| width | DO-214AC,SMA |
| height | 2.62mm(Max) |
| breakdown_voltage | 44.4V |
| clamping_voltage | 64.5V |
| peak_pulse_current | 6.2A |
| peak_pulse_power_dissipation | 400W |
| polarity | bidirectional |
| working_voltage | 40V |
The BOURNS SMAJ40CA is a high-performance surface-mount (SMD) varistor designed to provide reliable overvoltage protection in various electronic applications. This compact and efficient component is engineered to safeguard sensitive electronic circuits from voltage spikes and surges, ensuring the longevity and performance of the equipment it is integrated with.
Features of BOURNS SMAJ40CA:
1. Surface-Mount Technology: The SMAJ40CA is designed for easy integration into surface-mount PCB layouts, offering a space-saving solution for modern electronic devices.
2. High Capacitance: Despite its small size, the varistor maintains a high capacitance, which is crucial for protecting against transient voltages.
3. Fast Response Time: The device has an ultra-fast response time, ensuring that it can effectively protect circuits even during the briefest of voltage spikes.
4. Robust Construction: Built with a robust construction, the SMAJ40CA can withstand harsh environmental conditions, making it suitable for a wide range of applications.
Development Support:
Bourns provides comprehensive technical support and documentation to assist engineers in integrating the SMAJ40CA into their designs. This includes datasheets, application notes, and design guidelines to ensure optimal performance and reliability.
Application Fields:
The BOURNS SMAJ40CA is widely used across various industries, including:
- Consumer Electronics: Protecting smartphones, tablets, and laptops from power surges.
- Automotive: Safeguarding in-vehicle electronics against voltage fluctuations.
- Industrial Automation: Ensuring the stability of control systems and sensors.
- Telecommunications: Protecting network equipment from voltage spikes.
Parameter Introduction:
- Nominal Voltage (Un): Specifies the voltage at which the varistor starts to conduct significant current.
- Breakdown Voltage (Vb): The minimum voltage at which the varistor transitions from high-impedance to low-impedance state.
- Leakage Current (Ir): The current that flows through the varistor when it is not conducting.
- Capacitance (C): The inherent capacitive reactance of the varistor, which can affect high-frequency performance.
- Continuous Operating Voltage (Vc): The maximum voltage that can be continuously applied to the varistor without causing damage.
Frequently Asked Questions (FAQs):
1. Q: How does the BOURNS SMAJ40CA differ from other varistors?
A: The SMAJ40CA is a surface-mount varistor with a focus on high capacitance and fast response time, making it suitable for applications requiring compact and efficient overvoltage protection.
2. Q: Can the SMAJ40CA be used in outdoor applications?
A: Yes, its robust construction allows it to be used in outdoor applications, provided that it is properly sealed to protect against moisture and other environmental factors.
3. Q: What is the lifespan of the BOURNS SMAJ40CA?
A: The lifespan of the varistor depends on the operating conditions, including temperature, voltage, and current. Under normal operating conditions and within specified parameters, the SMAJ40CA is designed for long-term reliability.
4. Q: How should I select the appropriate varistor for my application?
A: Selecting the right varistor involves considering the expected voltage spikes, the frequency of these events, the required response time, and the physical space available on the PCB. Consulting with Bourns' technical support or referring to the datasheet can help in making an informed decision.
5. Q: Is there a risk of the varistor failing and causing damage to my circuit?
A: Varistors are designed to fail-safe. If a varistor fails, it will typically short-circuit, preventing the overvoltage from reaching the protected circuit. However, it is essential to use varistors within their specified parameters to avoid such failures.
By understanding the capabilities and specifications of the BOURNS SMAJ40CA, engineers can make informed decisions about integrating this varistor into their designs for optimal overvoltage protection.
Please refer to the product rule book for details.
Headquartered in Riverside, California, BOURNS has established a strong presence worldwide with facilities in North America, Europe, and Asia. This global footprint not only allows BOURNS to efficiently serve its international customer base but also to leverage local expertise and resources to stay at the forefront of technological advancements.
BOURNS is renowned for its innovative approach to product development and its commitment to quality and reliability. The company's extensive product line includes precision potentiometers, panel controls, encoders, resistive products, circuit protection solutions, magnetic components, microelectronic modules, and sensors. Each product category includes a variety of configurations and specifications to cater to specific applications and requirements.
In the field of circuit protection, BOURNS is known for its pioneering work in developing technologies that safeguard electronic systems from voltage and current surges, ensuring performance stability and extending product life. Their offerings in this category include fuses, overvoltage protection devices, and overcurrent protection solutions.
BOURNS' sensors are critical in applications requiring accurate measurement and control of physical parameters such as position, speed, and temperature. These sensors are integral in automotive systems, industrial automation, and consumer electronics, where precision and reliability are paramount.
The company also places a strong emphasis on environmental sustainability and ethical practices. BOURNS complies with international regulatory standards and actively works to minimize its environmental impact through waste reduction, energy conservation, and thoughtful manufacturing processes.
Research and development are central to BOURNS' operations. The company invests heavily in R&D to not only improve existing products but also to innovate new solutions that address the challenges of an ever-changing technological landscape. BOURNS holds numerous patents and its products are often considered benchmarks in the industry.
Customer service and technical support are also key aspects of BOURNS' business model. The company prides itself on providing responsive and comprehensive support to its clients, ensuring that they can maximize the use of BOURNS products in their applications.
In summary, BOURNS, Inc. is a leader in the electronic component industry, known for its reliable products, innovative solutions, and commitment to quality and customer satisfaction. With a rich history and a forward-looking approach, BOURNS continues to set industry standards and meet the complex demands of its global customers.
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