Product Overview

1N4148WS-7-F is an ultra-small surface-mount fast switching diode with SOD323 micro-package, featuring core electrical parameters of 75V repetitive peak reverse voltage and 300mA forward continuous current, along with a reverse recovery time of only 4ns and a total capacitance as low as 2pF. Compliant with RoHS and halogen-free environmental standards and compatible with automated SMT production lines, it is a premium model in the 1N4148 series for miniaturized and high-frequency signal switching scenarios, widely used in communication modules, portable consumer electronics and precision instrument signal conditioning and switching circuits.

Key Features

• Ultra-fast switching response: Maximum reverse recovery time is only 4ns, meeting the fast on-off requirements of high-frequency circuits
• Ultra-miniature package: SOD323 micro surface-mount package with a weight of only 0.006 grams, suitable for miniaturized integration of high-density PCB boards
• Low junction capacitance characteristic: Maximum total capacitance is only 2pF, effectively reducing delay and loss in high-frequency signal transmission
• Environmental compliance: Lead-free plating and compliant with the full range of RoHS directives, while meeting the "green device" standards of halogen-free and antimony-free
• Stable operation in wide temperature range: Operating temperature range of -55℃~+150℃, suitable for extreme temperature conditions of industrial and automotive grades

Technical Specifications

Typical Applications

1. Signal Switching in Communication Modules

In the high-frequency signal interface circuits of micro communication modules such as Bluetooth and WiFi, the 4ns ultra-fast switching speed and 2pF low capacitance of 1N4148WS-7-F enable delay-free switching of high-frequency signals. Meanwhile, the micro SOD323 package can adapt to the compact internal layout of the module, ensuring the accuracy and stability of communication data transmission.

2. Voltage Clamping in Portable Consumer Electronics

In the key detection and touch signal conditioning circuits of smart watches and Bluetooth headsets, this diode can be used as a voltage clamping component. Its low forward voltage drop can accurately limit the signal voltage range, and the ultra-small package can save internal space of the device, helping portable devices achieve ultra-thin and lightweight design.

3. Protection Circuits in Precision Instruments

In the input protection circuit of test instruments such as multimeters and oscilloscopes, the 75V reverse voltage resistance of 1N4148WS-7-F can resist instantaneous overvoltage shocks. The fast switching characteristic can be used as a fast limiting component to protect the internal precision circuits, and the low capacitance will not affect the accuracy of test signals.

4. Signal Rectification in Industrial Sensors

In the pulse signal rectification circuit of industrial micro sensors, the wide temperature working range of the device can cope with temperature fluctuations in industrial environments, the 300mA forward current can meet the signal driving demand of the sensor, and the short reverse recovery time can adapt to the high-frequency pulse output of the sensor.

5. Auxiliary Signal Circuits in Automotive Electronics

For non-automotive grade auxiliary signal circuits in automotive electronics (such as the key signal circuit of vehicle navigation), its wide temperature characteristic of -55℃~+150℃ can meet the complex temperature environment inside the vehicle, and its environmental compliance and stable electrical performance can meet the stringent reliability requirements of automotive applications.

Why Choose 1N4148WS-7-F ?

• Miniaturization advantage: The volume of SOD323 package is much smaller than that of traditional 1N4148 devices, making it the best choice for micro devices
• Outstanding high-frequency performance: 4ns reverse recovery time and 2pF low capacitance are suitable for high-frequency signal circuits above 1MHz
• Strong environmental tolerance: The wide temperature range of -55℃~+150℃ allows long-term stable operation under extreme temperatures
• High production line adaptability: The standard SOD323 package is compatible with automated SMT processes, reducing the production difficulty of micro devices
• Balance of cost and performance: It has excellent batch procurement cost performance while achieving ultra-miniaturization and high-frequency performance

SUNTOP COMPANY INTRODUCTION

Founded in 2000, Suntop is one of the leading global distributors of electronic components, dedica ted to providing comprehensive procurement and supply chain services to the global electronics manufacturing industry. Our services include distribution, spot trading, PPV cost-saving projects, and inventory management. We not only offer high-quality products but also strive to assist our clients in achieving optimal solutions with minimal time and cost.
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