680K Ohm 2Watt Carbon Film Resistors (Pack of 100)

680K Ohm 2Watt Carbon Film Resistors

The CFR Series Carbon Film Resistors are precision-engineered by applying a uniform layer of pure carbon onto high-quality ceramic rods. A helical groove is then etched into the resistive layer, and tinned copper leads are welded to the end-caps for secure connections. For added durability, the resistors are coated with multiple layers of tan-colored lacquer. These resistors are designed to operate reliably in ambient temperatures exceeding 70°C, making them ideal for use in high-temperature environments.

Features

Carbon Film Resistor

High Quality

long life

high reliability

Specification:

Resistance: 680K Ohms

Tolerance: ± 5%

Power (Watts): 2W

Composition: Carbon Film

Temperature Coefficient: -350/ +500ppm/°C

Operating Temperature: -55°C ~ 155°C

Application

used in chargers

small DIY Projects

Streetlights

Used in the fan speed regulator

Package Includes

100 x 680K Ohm 2Watt Carbon Film Resistors

680K Ohm 2Watt Carbon Film Resistors Overview

The 680K Ohm 2Watt Carbon Film Resistors are precision-engineered through-hole components designed to provide stable resistance in electronic circuits. With a 2W power rating and ±5% tolerance, these resistors are ideal for high-temperature environments and demanding applications.

Key Features of 680K Ohm 2Watt Carbon Film Resistors

• Resistance: 680KΩ with ±5% tolerance for accurate circuit performance
• Power Rating: 2W continuous dissipation in ambient temperatures up to 70°C+
• Carbon Film Construction: Uniform pure carbon layer on ceramic rod for long life and reliability
• Temperature Coefficient: –350 / +500 ppm/°C and operating range from –55°C to 155°C
• Durable Lacquer Coating: Multi-layer tan lacquer protects against moisture and mechanical stress
• Secure Connections: Tinned copper leads welded to end caps for ease of soldering
• Pack of 100: Bulk quantity for prototyping, production runs, and repairs
• Fast Shipping from Zbotic: Orders dispatched within 24 hours with tracking

Applications and Use Cases

• Voltage divider networks in power supplies and measurement circuits
• Current limiting in LED drivers and signal conditioning modules
• Load simulation and dummy loads for testing electronic devices
• Filter circuits (RC, high-pass, low-pass) in audio and RF applications
• Temperature compensation and sensor calibration setups
• Prototyping and educational electronics projects requiring stable resistors

How to Use 680K Ohm 2Watt Carbon Film Resistors

Insert the 2W through-hole resistor into your PCB pads or breadboard, ensuring the leads pass cleanly through the hole. Solder each lead to the board while avoiding excessive heat, then trim any excess lead length. Position the resistor away from heat-sensitive components to maintain its power rating and long-term stability.

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• Genuine Products: All items sourced from authorized distributors
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Frequently Asked Questions

Can I use these resistors in high-temperature applications?

Yes. These carbon film resistors are rated to operate reliably from –55°C up to 155°C and can handle ambient temperatures above 70°C without performance degradation.

Is the ±5% tolerance sufficient for precision circuits?

For many analog and power applications, ±5% is acceptable. If tighter tolerance is required, consider a metal film resistor or a lower tolerance carbon film option.

How should I store unused resistors to maintain quality?

Store them in a dry, dust-free environment at room temperature. Keep the pack sealed or in anti-static bags to prevent moisture absorption and contamination.