





7.8k Ohm Resistor – ¼ Watt Carbon Film Resistor
It is a 7.8K Ohm 1/4W Metal Film Resistor. This resistor is for through-hole applications. High-quality 7.8kΩ carbon film resistor with ¼ watt power rating and ±5% tolerance, ideal for voltage dividers, sensor pull-up circuits, and general-purpose Arduino, ESP32, and IoT applications.
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Product Description (Detailed):
While 7.8k Ohm is not a standard value typically found in the common E24 series for ¼ Watt carbon film resistors (which usually have a 5% tolerance), it's possible you're looking for a specific value for a precise application, or considering a closer standard alternative for your electronic projects in Pune or beyond. The most common standard values near 7.8k Ohm in the E24 series are 7.5k Ohm and 8.2k Ohm. If 7.8k Ohm is a critical requirement, it is most commonly found in higher precision metal film resistors (often with 1% tolerance, part of the E96 series), which offer tighter manufacturing tolerances and are readily available from specialized electronic component suppliers.
Regardless of its precise value, a ¼ Watt carbon film resistor remains a fundamental and cost-effective component for a vast array of electronic circuits. These resistors are known for their reliable performance and are produced by depositing a thin carbon film onto a ceramic substrate, with a helical cut to achieve the desired resistance. They are ideal for low-power applications and general-purpose use.
Commonly identified by their four-band color code (though 7.8k Ohm wouldn't follow a standard E24 code for 5% tolerance), these resistors are widely used for current limiting, protecting sensitive components from overcurrent. They are also integral to voltage divider networks, allowing you to create specific voltage references or scale down higher voltages for various parts of your circuit. Additionally, they often serve as pull-up or pull-down resistors in digital logic circuits, ensuring stable input states for microcontrollers like Arduino or ESP32. Their axial-leaded design makes them perfect for easy integration into breadboards, perfboards, and through-hole PCB designs, making them a staple for prototyping and educational projects. If 7.8k Ohm is a strict requirement, consider a metal film resistor; otherwise, 7.5k Ohm or 8.2k Ohm carbon film resistors are readily available and widely applicable alternatives for your electronic needs in India.
The 7.8kΩ (7800 Ohm) Resistor is a carbon film resistor designed for use in analog and digital electronics. It is ideal for voltage divider networks, sensor interface circuits, LED dimming, and transistor base biasing.
Its ¼ watt rating ensures safe performance in low-power applications, and the ±5% tolerance provides acceptable accuracy for general-purpose use. This resistor is commonly used in Arduino, ESP32, Raspberry Pi, and microcontroller development boards.
It features an axial leaded body that fits easily into breadboards, perf boards, or soldered onto PCBs.
Key Features:
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Resistance: 7.8kΩ (7800 Ohms)
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Power Rating: 0.25W (¼ Watt)
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Tolerance: ±5%
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Type: Carbon Film, Axial Leaded
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Color Code: Violet – Gray – Red – Gold
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Suitable for analog voltage scaling, pull-up/pull-down resistors, and DIY circuit design
Technical Specifications:
Parameter | Specification |
---|---|
Resistance | 7.8kΩ (7800 Ohms) |
Power Rating | 0.25W (¼ Watt) |
Tolerance | ±5% |
Type | Carbon Film |
Mounting Type | Axial, Through-Hole |
Color Code | Violet – Gray – Red – Gold |
Operating Temperature | -55°C to +155°C |
Lead Spacing | ~7–8 mm |
How to Use:
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Insert the resistor into breadboard or PCB.
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Use in sensor circuits, voltage dividers, or analog scaling applications.
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Can also be used as pull-up or pull-down resistor in GPIO circuits.
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Ensure the applied power does not exceed 0.25W.
Always double-check resistor values using the color code or a multimeter.
Applications:
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Voltage divider for analog-to-digital conversion
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Sensor calibration and signal conditioning
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Pull-up/down resistor for Arduino/ESP32/Raspberry Pi
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Biasing in transistor-based amplifier or switching circuits
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DIY robotics, IoT circuits, or custom PCBs
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Educational electronics prototyping
Package Includes:
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1 × 7.8kΩ ¼ Watt Resistor
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