{"product_id":"molex-kk254-2-54mm-kf2510-female-single-head-silicone-cable-22awg-ul3239-200c-3kv-3a","title":"Molex KK 254 2.54mm KF2510 Female Single-Head Silicone Cable 22AWG UL3239 200°C 3KV 3A","description":"\u003ch2\u003eMolex KK 254 \/ KF2510 2.54mm Single-Head Silicone Cable — 200°C \/ 3KV \/ 3A\u003c\/h2\u003e\u003cp\u003eThe KF2510 single-head silicone cable is the \u003cstrong\u003ehigh-temperature variant\u003c\/strong\u003e of the standard KF2510 single-head cable, using \u003cstrong\u003eUL3239 silicone insulation rated to 200°C, 3KV, and 3A\u003c\/strong\u003e instead of standard UL1007 PVC. It features a Molex KK 254 compatible housing on one end and bare tinned wire on the other. Available in \u003cstrong\u003e2P to 12P\u003c\/strong\u003e at 2.54mm pitch.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch:\u003c\/strong\u003e 2.54mm (0.1\") — compatible with Molex KK 254, KF2510, and all standard 0.1\" pin headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin Count:\u003c\/strong\u003e 2P, 3P, 4P, 5P, 6P, 7P, 8P, 9P, 10P, 11P, 12P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire:\u003c\/strong\u003e 22AWG UL3239 Silicone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 200°C (vs. 80°C for standard UL1007 PVC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 3KV (vs. 300V for standard UL1007)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 3A per contact\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing:\u003c\/strong\u003e KF2510 \/ Molex KK 254 compatible female crimp housing, one end\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther end:\u003c\/strong\u003e Bare tinned wire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexibility:\u003c\/strong\u003e Ultra-flexible silicone jacket — significantly more flexible than PVC at low temperatures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e RoHS compliant; UL-certified wire\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Silicone Instead of PVC?\u003c\/h3\u003e\u003cp\u003eStandard UL1007 PVC insulation softens and deforms above 80°C, making it unsuitable for wiring near heat sources. \u003cstrong\u003eUL3239 silicone insulation remains stable up to 200°C\u003c\/strong\u003e and does not emit toxic fumes when exposed to high temperatures. Silicone is also significantly more flexible than PVC at room temperature, making it easier to route in tight spaces and more resistant to fatigue cracking in vibration environments.\u003c\/p\u003e\u003cp\u003eUse silicone cable when your wiring passes within 100mm of a heat source rated above 60°C, or when the cable is subject to continuous flexing.\u003c\/p\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3D printers:\u003c\/strong\u003e Hotend thermistor wiring, heated bed connections, stepper motor wiring near the hotend carriage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial heating equipment:\u003c\/strong\u003e Temperature sensor wiring, heating element control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobotics:\u003c\/strong\u003e Joint wiring subject to continuous flexing and high ambient temperatures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC machines:\u003c\/strong\u003e Spindle motor and servo wiring in high-temperature enclosures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED grow lights and high-power LED drivers:\u003c\/strong\u003e Wiring near high-wattage LED modules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive and motorsport:\u003c\/strong\u003e Engine bay sensor wiring, exhaust temperature sensors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eThe KF2510 housing on this cable mates with all standard 2.54mm \/ 0.1\" pitch PCB headers including Molex KK 254 Series 4030, 42375, 42376, 42377, 6373, 6410, generic KF2510, and Harwin M20. \u003cstrong\u003eNot compatible with JST XH (2.5mm pitch).\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: Why does my 3D printer need silicone cable for the hotend?\u003c\/strong\u003e\u003cbr\u003eA: 3D printer hotends operate at 180–300°C. Standard PVC-insulated wire (rated to 80°C) will soften, deform, and potentially short-circuit if routed near the hotend block or heater cartridge. UL3239 silicone cable rated to 200°C is the correct specification for this application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is silicone cable more flexible than PVC?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Silicone insulation is significantly softer and more flexible than PVC, especially at low temperatures. This makes it easier to route in tight spaces and more resistant to fatigue cracking in applications with continuous cable movement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the voltage rating of UL3239 silicone cable?\u003c\/strong\u003e\u003cbr\u003eA: 3KV, compared to 300V for standard UL1007 PVC. This makes silicone cable suitable for higher-voltage signal and control applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I use this cable for standard (non-high-temperature) applications?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Silicone cable is a direct upgrade from PVC in all applications. The only trade-off is higher cost. 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