100 pieces — resettable polymer fuses, 30V polymer DIP JK30, available in a wide range of hold/trip currents for flexible overcurrent protection. Key benefits Reliable overcurrent protection: polymer PTCs protect circuits from overloads and short circuits by increasing resistance when current exceeds the device threshold. Self-resetting: after the fault clears and the fuse cools, it automatically returns to normal operation, eliminating the need for fuse replacement. Wide current selection: choose the appropriate rating for diverse circuit needs without changing fuse type or footprint. Easy mounting and replacement: DIP JK30 package fits standard through-hole PCB layouts for simple installation and repair. Cost and downtime reduction: resettable protection reduces inventory of spare fuses and minimizes service interruptions. Available specifications Quantity: 100 pieces per set. Type: Polymer resettable fuse, DIP package, model JK30. Maximum voltage rating: 30 V. Available current ratings include: 0.5A, 0.75A, 0.9A, 1.1A, 1.35A, 1.6A, 1.85A, 2A, 2.5A, 3A, 4A, 5A, 6A, 7A, 8A, 9A, 10A. Important attributes Function: protective device that limits current during fault conditions and resets automatically when normal conditions resume. Compatibility: suitable for low-voltage DC circuits up to 30 V; designed for through-hole PCB mounting in the JK30 DIP footprint. Material: polymer PTC thermistor construction for repeatable thermal-current response and long service life. Performance: consistent trip behavior across the specified current ratings; selectable values let you match hold and trip characteristics to the protected circuit. Typical applications USB and peripheral hubs, docking stations, and small power adapters where automatic reset reduces maintenance. Battery-powered equipment and portable devices that need compact, reliable overcurrent protection without replacing fuses. LED drivers, 3D printers, hobby electronics, and industrial control boards that require multiple current options for different circuit branches. Installation and usage notes Use in DC circuits rated 30 V or below. Select the fuse rating that matches the circuit's normal operating current and expected inrush characteristics. Mount in the JK30 through-hole footprint; ensure adequate spacing and cooling for reliable operation. Pack contents and suitability Each pack contains 100 JK30 30V polymer DIP resettable fuses across the listed current ratings. Suitable for electronics designers, repair technicians, and OEM production where reusable, compact overcurrent protection is required.