500Ω Epoxy-Dip NTC Thermistor – Temperature Sensing & Thermal Runaway Protection for Transistor Circuits

Your bipolar amp runs hot, the transistor starts pulling more current, it gets hotter, and suddenly you've got a dead board on your bench. An NTC thermistor catches that thermal runaway before it becomes a smoke smell in the workshop. This 500Ω unit is made from ceramic material that shifts resistance fast as temperature changes, so your circuit sees the drift and reacts. Radial leads, epoxy-dipped body, tinned copper — solder it in, bridge it across the emitter, and you're covered. Rugged enough for a school electronics lab or a home-brew amp build. Sits on the shelf here, ready when you need it

• 500Ω NTC resistance for thermal runaway detection in bipolar transistor amplifiers
• Ceramic body shifts resistance rapidly with temperature change
• Radial lead type with tinned copper for reliable solder joints
• Epoxy-dipped coating protects the ceramic element from vibration and moisture
• Suits breadboard, PCB, and point-to-point builds
• Rugged construction for repeated thermal cycling