SMD250

Tyco / Electronics Raychem Circuit Protection 308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 Fax: 800-227-4866 PolySwitch® PTC Devices Overcurrent Protection Device PRODUCT: SMD250 DOCUMENT: SCD 22295 PCN: 544467 REV LETTER: J REV DATE: JULY 2, 2002 PAGE NO.: 1 OF 1 Specification Status: Released Maximum Electrical Ratings Operating Voltage / Interrupt Current 15V / 40A 12V / 60A 5V / 125A C H B G D A E F Marking 250 Manufacturer’s Mark Part Identification Notes: 1. All metal surfaces are tin plated. 2. Devices cannot be wave soldered. 3. Drawing not to scale. TABLE I. DIMENSIONS: A B C D E F G H MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN mm: 8.00 9.40 -3.00 6.00 6.71 0.56 0.71 0.56 0.71 3.68 3.94 0.66 1.37 0.43 in*: (0.315) (0.370) -(0.118) (0.236) (0.264) (0.022) (0.028) (0.022) (0.028) (0.145) (0.155) (0.026) (0.054) (0.017) *Rounded off approximation TABLE II. PERFORMANCE RATINGS: CURRENT RATINGS** AMPS AT 0°C HOLD TRIP 2.8 6.0 AMPS AT 20°C HOLD TRIP 2.5 5.0 TIME TO TRIP** TRIPPED-STATE POWER DISSIPATION** OHMS WATTS AT AT 20°C 20°C MIN MAX* MAX 0.035 0.085 1.9 RESISTANCE VALUES AMPS SECONDS AT AT 60°C 20°C, 8.0A HOLD TRIP MAX 1.6 3.8 25 * Maximum resistance is measured 1 hour after reflow. ** Values specified were determined using PCB’s with 0.070”X1.5 ounce copper traces. Reference Documents: Precedence: Effectivity: CAUTION: PS300, E.N. SMD 1.0x 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.