1/2w150R Resistor (4-Band) (Metal oxide film) Code: 02925689

A 1/2-watt, 150-ohm metal oxide film resistor is a reliable, flame-proof through-hole electronic component built to handle higher temperatures and power surges. It is ideal for general-purpose circuits, logic interfacing, and lower-voltage LED drivers.

Core Specifications

• Resistance:150 Ω (Ohms)
• Power Rating:5 W (1/2 Watt)
• Technology:Metal Oxide Film
• Max Working Voltage:Typically 350V
• Max Overload Voltage:Typically 700V
• Tolerance:Usually ± 5% (common for metal oxide) or ± 1% (common if metal film)
• Operating Temperature:-55°C to +155°C

Identifying the Resistor

Depending on the manufacturing standard, you can identify this resistor visually:

• Color Code (4-Band):Brown → Green → Brown → Gold (or Brown → Green → Brown → Silver, if ±10%)
• Color Code (5-Band):Brown → Green → Black → Black → Brown

Practical Usage in Circuits

• Current Limiting for LEDs:In a 12V DC circuit, this resistor easily limits the current to an LED, producing a safe drive current of around 50mA
• Thermal Rating:Because it is a metal oxide type, it is highly non-flammable and excels at dissipating heat. However, in a continuous 12V application, it will dissipate roughly 0.8 Watts of power—which will make the component quite hot. Always ensure you are not exceeding its 0.5 W maximum by keeping your operating voltage and current in check.