Resistor 0.25W 12 ohm (10 pcs)

The Resistor 0.25W 12 ohm is a quarter-watt through-hole resistor with a resistance of 12 Ω, in a pack of 10. As a standard E12 value it is easy to design with, and it works as the current-setting resistor of an LM317 current source, a MOSFET gate resistor or a small current-sense resistor in Arduino and ESP32 projects.

Resistor 0.25W 12 ohm Specifications

• Resistance: 12 Ω (12 ohms)
• Power rating: 0.25 W (1/4 W)
• Value series: standard E12 value (also in the E24 series)
• Colour code: brown, red, black (4-band) or brown, red, black, gold (5-band), followed by the tolerance band
• Maximum current: about 144 mA at the full 0.25 W
• Type: fixed resistor, axial leads, through-hole
• Pack size: 10 pieces

Resistor 0.25W 12 ohm Applications

• LM317 constant-current source: 1.25 V / 12 Ω gives about 104 mA
• Gate resistors for power MOSFETs
• Current sensing: each 10 mA produces a 120 mV drop
• RC supply filters for analog and audio stages
• Electronics education and prototyping

What's in the Box

• 10 × 12 Ω 0.25 W resistors

Tip: Do not confuse 12 Ω (brown, red, black) with 120 Ω (brown, red, brown), the value used to terminate CAN bus and RS-485 lines. A 12 Ω resistor in that position would load the bus far too heavily.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.