Generic
100 Ohm 2 Watt Carbon Film Resistor CFR – ±5% Tolerance Through-Hole PTH (Pack of 4)
- Type: Carbon Film Resistor (CFR)
- SKU: CMP-QC0205
- Resistance: 100 Ohm (100Ω)
- Rated Power: 2W
- Tolerance: ±5%
- Temperature Coefficient: Negative (NTC) – resistance decreases as temperature increases
- Lead Material: Tin-plated Copper
- Mounting Type: Through-Hole (PTH)
- Colour Code: Brown – Black – Brown – Gold (100 Ohm ±5%)
- High-Frequency Characteristics: Good
- Long-term Stability: Excellent
- Quantity: Pack of 4 Resistors
- Applications: Current limiting, voltage division, resistance matching, load matching, capacitor matching
Non-returnable
SKU - YTX25262017
₹13.53
₹18.94
In stock:
0
Choose Quantity:
Share:
Product Details
100 Ohm 2 Watt Carbon Film Resistor (CFR) – ±5% Tolerance, Through-Hole PTH (Pack of 4)
This is a pack of 4 × Carbon Film Resistors (CFR), each rated at 100 Ohm (100Ω) with a 2W power rating and ±5% tolerance. Carbon Film Resistors are manufactured by depositing a thin layer of pure carbon on a ceramic substrate, providing a high negative temperature coefficient (NTC) — meaning resistance decreases as temperature increases. These resistors offer excellent long-term stability, good high-frequency characteristics, and reliable performance across a wide range of general-purpose electronic applications.
The tin-plated copper leads ensure excellent solderability on PCBs and stable contact in breadboard prototyping. Their through-hole (PTH) form factor makes them compatible with standard PCB layouts, perfboards, and all sizes of breadboards.
Key Features
- Resistance: 100 Ohm (100Ω)
- Rated Power: 2W — handles higher current vs standard ¼W resistors
- Tolerance: ±5% — high accuracy for general-purpose circuits
- Type: Carbon Film (CFR) — pure carbon on ceramic substrate
- Temperature Coefficient: Negative (NTC) — resistance decreases with rising temperature
- Lead Material: Tin-plated copper — excellent solderability and oxidation resistance
- Mounting: Through-Hole (PTH) — breadboard and PCB compatible
- High-Frequency Performance: Good — suitable for signal circuits
- Long-Term Stability: Excellent — consistent performance over time
- Quantity: Pack of 4 resistors
Technical Specifications
| Parameter | Specification |
|---|---|
| SKU | CMP-QC0205 |
| Resistor Type | Carbon Film (CFR) |
| Resistance Value | 100 Ohm (100Ω) |
| Rated Power | 2W |
| Tolerance | ±5% |
| Temperature Coefficient | Negative (NTC) |
| Lead Material | Tin-plated Copper |
| Mounting Type | Through-Hole (PTH) |
| Colour Code | Brown – Black – Brown – Gold |
| High-Frequency Characteristics | Good |
| Long-Term Stability | Excellent |
| Operating Temperature | -55°C to +155°C (typical CFR) |
| Quantity per Pack | 4 Resistors |
Colour Code Reference
| Band | Color | Value |
|---|---|---|
| Band 1 (1st Digit) | Brown | 1 |
| Band 2 (2nd Digit) | Black | 0 |
| Band 3 (Multiplier) | Brown | ×10 |
| Band 4 (Tolerance) | Gold | ±5% |
| Result | 100Ω ±5% | |
Power Rating Comparison
| Power Rating | Max Current @ 100Ω | Use Case |
|---|---|---|
| ¼W (0.25W) | 50 mA | Signal circuits, logic level |
| ½W (0.5W) | 70.7 mA | General purpose |
| 2W (This Product) | 141.4 mA | Higher current circuits, LED arrays, motor control |
Applications
- Current Limiting: LED current limiting resistor for high-brightness LEDs and LED arrays
- Voltage Division: Voltage divider networks for ADC inputs and sensor biasing
- Pull-up / Pull-down: GPIO pin biasing for buttons, switches, and open-collector outputs
- Base Resistor: NPN/PNP transistor base drive resistor (BC547, BC557, 2N2222)
- Resistance Matching: Impedance matching in signal and audio circuits
- Load Matching: Dummy load for power supply and amplifier testing
- RC Timing Circuits: Capacitor charge/discharge timing in oscillators and filters
- Motor Driver Circuits: Current sense and snubber resistors
- Arduino / ESP32 Projects: General-purpose breadboard and PCB prototyping
Important Usage Notes
- The 2W rating means this resistor safely dissipates up to 2 watts — always keep actual dissipation below the rated value.
- Power Dissipation Formula: P = V² / R = I² × R. For 100Ω at 2W: max safe voltage = √(2 × 100) = ~14.14V, max safe current = √(2 / 100) = ~141.4mA.
- Carbon film resistors have a negative temperature coefficient (NTC) — resistance slightly decreases at higher temperatures. For precision applications, use metal film resistors (±1%) instead.
- Store in a cool, dry environment — avoid humidity and direct heat exposure.
Additional Resources
- Resistor Colour Code Guide
- Ohm's Law Calculator
- LED Resistor Calculator
- Resistor in Series / Parallel Calculator
Package Contents
- 4 × 100 Ohm 2 Watt Carbon Film Resistors (CFR, ±5%, Through-Hole)
