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Through-hole carbon film resistor · YAGEO CFR-25

Resistor (1/4 W carbon film) Basic Circuit

Build a basic Resistor (1/4 W carbon film) circuit with labeled pins, component values and connection guidance.

Resistor (1/4 W carbon film) in a circuit

An LED current limit at 5 V and a divider at 9 V.

Left: 5 V through a 220 ohm resistor to a red LED and ground, 14.3 mA. Right: 9 V across 10 kilohm over 4.7 kilohm, output 2.88 V.
Power in each resistor stays far below 1/4 W.

Connect it, step by step

Follow the component values and pin connections

Limit a current

The resistor takes the voltage the LED does not: 5 − 1.85 = 3.15 V across 220 Ω.

Divide a voltage

Two resistors in series share the supply in proportion to their values.

Check the power

I² × R for each resistor, against 1/4 W derated for the ambient.

Component view