Assorted Resistor Box 1/4 Watt

Specifications

• Total Quantity: 150 Pieces
• Power Rating: 1/4 Watt (0.25W)
• Number of Unique Values: 30
• Quantity per Value: 5 pieces
• Resistance Range: 10 Ohms to 470 kilo-Ohms (kΩ)
• Mounting Type: Through-Hole (Axial Leads)
• Tolerance: ±5% (Typical for standard carbon film components)
• Packaging: Reusable transparent plastic storage box with an indexed sticker label

       Included Values:

• Ohms (E): 10, 15, 22, 33, 47, 68, 100, 220, 330, 470
• Kilo-Ohms (K): 1K, 1.5K (1K5), 2.2K (2K2), 3.3K (3K3), 4.7K (4K7), 5.6K (5K6), 6.8K (6K8), 8.2K (8K2), 10K, 15K, 22K, 33K, 47K, 56K, 68K, 100K, 150K, 220K, 330K, 470K

Applications

• Breadboard Prototyping: Easy insertion for testing circuits before soldering.
• Microcontroller Projects: Essential for Arduino, ESP32, and Raspberry Pi builds.
• Current Limiting: Protecting LEDs and other sensitive components from overcurrent.
• Voltage Dividers: Stepping down voltages for sensor inputs.
• Pull-up / Pull-down Resistors: Stabilizing digital logic pins.
• Audio Equipment Repair: Fixing or modifying amplifiers, pedals, and radios.
• Educational Kits: Perfect for classroom STEM environments and learning Ohm's law.

Package Includes:

• 1 x Assorted Resistor Box 1/4 Watt

Frequently Asked Questions (FAQs)

• What does the "E" mean on the label (e.g., 10E, 220E)?
  In this labeling convention, "E" stands for Ohms (Ω). For example, 10E means 10 Ohms, and 220E means 220 Ohms.
• What does "K" mean on the label?
  "K" stands for kilo-Ohms (thousands of Ohms). You multiply the number by 1,000. Therefore, 10K means 10,000 Ohms.
• What does it mean when a letter is in the middle of a number, like "1K5"?
  This is a standard shorthand to avoid easy-to-miss decimal points. The letter acts as the decimal. "1K5" means 1.5 kilo-Ohms (or 1,500 Ohms).
• How many resistors do I get for each value?
  The box contains 150 pieces total and lists 30 distinct resistance values. This means you get exactly 5 pieces for every value listed.
• Are these suitable for use with an Arduino or Raspberry Pi?
  Yes, absolutely. 1/4 Watt through-hole resistors are the most common and highly recommended type for microcontroller prototyping on breadboards.
• What is the power rating and what does it mean?
  These are rated at 1/4 Watt (0.25W). This is the maximum amount of power (heat) the resistor can safely dissipate. For standard logic circuits and LED lighting, 1/4W is more than sufficient.
• Can I use a 1/4 Watt resistor if my circuit diagram asks for a 1/8 Watt resistor?
  Yes. You can always use a resistor with a higher power rating than required, as long as it physically fits in your space. It will just run cooler.
• Are these resistors through-hole or surface mount (SMD)?
  These are through-hole (axial) resistors with wire leads on each end, meant for breadboards or through-hole PCB soldering.
• What is the tolerance of these resistors?
  Standard kits of this type typically feature a ±5% tolerance, meaning the actual resistance will be within 5% of the stated value.
• How do I identify the resistors if they fall out of the box?
  Each resistor has standard color-coded bands painted on it. You can use a free online resistor color code calculator to identify them if they get mixed up.