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High Reliability 1W Zener Diodes 1N47 Series DO-41 Package | China Suppliers & Factory
Functions
01
Voltage Regulation
Provides stable DC voltage for subsequent circuits, commonly used in linear voltage regulation, power supply voltage division and biasing, to suppress the impact of input voltage fluctuations on loads.
02
Reference Voltage Source
Serves as a precision reference voltage for ADC/DAC calibration, sensor biasing, and instrument reference. It can replace part of reference ICs with low cost and low noise.
03
Overvoltage Protection and Clamping
Breaks down reversely when the input/interface voltage exceeds VZ, clamping the voltage at VZ to protect sensitive components such as MCUs, op-amps, and MOSFETs from high voltage damage.
04
Signal Limiting and Shaping
Limits the amplitude of analog signals to prevent overshoot from damaging subsequent stages, often used in audio frequency, sensor signal conditioning and interface protection.
05
Surge and ESD Suppression
Absorbs transient energy quickly, suitable for communication interfaces, buttons, IO ports and other parts prone to electrostatic or surge impact.
Product Specifications
Product Dimension
Installation Method
a) Soldering Temperature: 350 ± 10°C
b) Soldering Time: Still ≤3 seconds per joint
Applications
Power management: linear voltage regulation, constant voltage for battery charging, feedback voltage division of switching power supplies.
Industrial control: sensor power supply, IO port protection, peripheral voltage regulation of PLC/MCU.
Consumer electronics: voltage regulation and protection of small home appliances, automotive electronic devices, communication modules.
Testing and measurement: precision instrument reference, low-noise reference source.
Why Choose Us?
Our 1W glass-enclosed zener diodes cover a full range of zener voltages from 3.3V to 100V. Adopting high-quality chips and glass encapsulation technology, they feature stable reverse breakdown characteristics, low dynamic resistance, and extremely small leakage current. In scenarios such as power supply voltage regulation, reference voltage, and overvoltage protection, they can effectively suppress voltage fluctuations, ensure long-term stable operation of circuits, and far exceed industry general standards.
The products have excellent temperature characteristics and anti-interference ability, which can adapt to different temperature environments such as industrial control, consumer electronics, and automotive equipment. At the same time, they have excellent ESD protection and transient surge absorption capabilities, providing reliable protection for sensitive circuits (MCU, op-amp, MOS tube).
From chip selection, packaging and soldering to finished product testing, we have established a multi-level quality control process, including zener voltage accuracy testing, leakage current detection, temperature coefficient calibration, mechanical strength testing (bend resistance, high temperature resistance), etc. Each batch of products is accompanied by a test report to ensure a 100% factory qualification rate.
In response to the soldering requirements of glass-enclosed devices, we have optimized the pin process and packaging materials. The products are compatible with various soldering methods such as wave soldering, manual soldering, and reflow soldering. They strictly follow the process specifications of ≤3 seconds per solder joint and 350°C soldering temperature, eliminating problems such as glass cracking, dry soldering, and pin oxidation, and greatly reducing the customer’s soldering defect rate.
The products have passed reliability verification such as high-low temperature cycle and aging test, with no performance attenuation during long-term use, effectively reducing equipment repair rate and maintenance cost. They are especially suitable for industrial and automotive scenarios that have strict requirements on device life.
Frequently Asked Questions
For bulk orders, we usually deliver within 3-7 working days due to sufficient inventory. We also provide small-batch trial orders (minimum order quantity can be negotiated) to help you test product performance before mass production.
All our 1W glass-enclosed zener diodes comply with RoHS. We can provide test reports for each batch according to your needs, ensuring compliance with domestic and foreign electronic manufacturing requirements.
We have a fast-response after-sales team. If you find quality problems (such as unstable voltage regulation, packaging damage, or soldering defects), please contact us within 7 working days. We will provide solutions such as return, exchange, or batch rectification free of charge.
We support customized packaging. The available forms include tape packaging (compatible with automatic placement machines), reel packaging, and bulk packaging. We can adjust the packaging according to your production line requirements to improve production efficiency.
To prevent thermal damage or glass cracking during assembly, strictly maintain a soldering temperature of 350 ± 10°C with an operation time of ≤3 seconds per solder joint.
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