PolySwitch® PTC Devices PRODUCT: ASMDC300F/24 DOCUMENT: SCD29101 REV LETTER: A REV DATE: SEPTEMBER 26, 2016 PAGE NO.: 1 OF 2 Overcurrent Protection Device Specification Status: Released Maximum Electrical Rating Voltage: 24VDC Short Circuit Current: 40A Notes: 1. All terminations are tin plated. 2. Drawing not to scale Marking: TABLE I. DIMENSIONS: A mm: in: MIN 7.30 (0.29) B MAX 7.70 (0.30) MIN 0.80 (0.03) C MAX 1.10 (0.04) MIN 4.90 (0.19) D MAX 5.30 (0.21) MIN 0.25 (0.01) MAX 0.95 (0.04) E MIN 0.20 (0.01) TABLE II. PERFORMANCE RATINGS: CURRENT RATINGS** TIME TO TRIP** RESISTANCE VALUES AMPERES AMPERES AMPERES AMPERES SECONDS OHMS AT 0°C AT 25°C AT 60°C AT 85°C AT 25°C, 8.0A AT 25°C HOLD TRIP HOLD TRIP HOLD TRIP HOLD TRIP MAX MIN MAX* 3.70 6.40 3.00 6.00 2.20 3.80 1.50 2.90 5.0 0.015 0.072 TRIPPED-STATE POWER DISSIPATION** WATTS AT 25°C, 24V MAX 1.70 * Maximum resistance is measured 1 hour after reflow. ** Values Specified were determined using PCB’s with 0.150”X1.5 ounce copper traces. Reference Documents: Precedence: Effectivity: CAUTION: PS300, PS400 This specification takes precedence over documents referenced herein. Reference documents shall be the issue in effect on the date of invitation for bid. Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame. Materials Information ROHS Compliant ELV Compliant Pb-Free Halogen Free* HF * Halogen Free refers to: Br≤900ppm, Cl≤900ppm, Br+Cl≤1500ppm. © 2016 Littelfuse,Inc Specifications are subject to change without notice. Revised September 26, 2016 Littelfuse.com PolySwitch® PTC Devices Overcurrent Protection Device PRODUCT: ASMDC300F/24 DOCUMENT: SCD29101 REV LETTER: A REV DATE: SEPTEMBER 26, 2016 PAGE NO.: 2 OF 2 Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, lifesaving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. © 2016 Littelfuse,Inc Specifications are subject to change without notice. Revised September 26, 2016 Littelfuse.com