Surge Tolerant Cartridge Fuses

www.DataSheet4U.com Selector Chart For Fuses Resettable Polymeric PTC 9E NEW ISO 9001 / ISO 14001 Fuses cross to competitive resettable devices. See our online cross list at http://www.schurterinc.com/cross.htm Series Page Mounting terminals Hold current IH @ 23˚C PFMD 106 -108 surface mount 200mA to 1.1A PFSM 109 - 111 surface mount 300mA to 2.5A PFRA 112 -115 radial leaded 100mA to 9A PFRX 116 -118 radial leaded 1.1A to 3.75A PFST/PFLT 119 - 122 strap (standard or slotted) 1A to 4.2A NonResettable Surface Mount NEW EIA 1206 With or without fuse clips NEW Time-lag version OMT New MSB / MKT Time lag versions Series / Voltage Page Rated current Time/current action MGA 125V 127 200mA to 5A quick-acting SFP 63V; SFC 63V 128-129 1A-5A; 800mA-4A quick-acting OMF 63V 130-131 63mA to 10A quick-acting OMF 125 132-133 63mA to 10A quick-acting OMF/OMT 125/250V 134 250mA to 4A MELF/MKF 125V 135-136 125mA to 7A quick-acting or time-lag quick-acting or time-lag UL listed versions MSF-U & MST-U Through-Hole NEW NEW NEW With radial leads Hermetically sealed MXT with high breaking capacity Series / Voltage Page Rated current Time/current action MSA 125V 137 63mA to 15A quick-acting MGL 125V 138 200mA to 5A quick-acting MSF 125V 139 100mA to 5A quick-acting MSF 250V 140 40mA to 5A quick-acting MST/MXT 250V 141/142 50mA to 6.3A time-lag FRT 250V 143 250mA to 6.3A quick-acting or time-lag 5 x 20mm Series Page SA/SP/SPT/FSM 144 -154 Quick-acting and time-lag characteristics available, with low, medium or high breaking capacities. Pigtail leads optional. FSF/FST/FTT/FSM All series Fuse kits for prototypes 144 - 154 144 - 154 156 Telecom Surge-Tolerant for Telecom applications Series / Voltage Page Rated current Time/current action OSU 125V 162 250mA to 3.15A quick-acting OSU / OMT 250V 162 250mA to 3.15A quick-acting MSU 125V 163 250mA to 3.15A quick-acting MSU 250V 163 250mA to 3.15A quick-acting FRT 250V 164 250mA to 3.15A quick-acting FSU / SSU 250V 165-166 250mA to 3.15A quick-acting 102 Schurter, Inc. • Phone 707-778-6311 • Fax 707-778-6401 • E-mail info@schurterinc.com • Website http://www.schurterinc.com www.DataSheet4U.com H O W P O LY M E R I C R E S E T TA B L E O V E R C U R R E N T P R O T E C TO R S W O R K The conductive carbon black filler material in the polymeric device is dispersed in a polymer that has a crystalline structure. The crystalline structure densely packs the carbon particles into its crystalline boundary so they are close enough together to allow current to flow through the polymer insulator via these carbon Òchains.Ó When the conductive plastic material is at normal room temperature, there are numerous carbon chains forming conductive paths through the material. Under fault conditions, excessive current flows through the polymeric device. I2R heating causes the conductive plastic materialÕs temperature to rise. As this self heating continues, the materialÕs temperature continues to rise until it exceeds its phase transformation temperature. As the material passes through this phase transformation temperature, the densely packed crystalline polymer matrix changes to an amorphous structure. This phase change is accompanied by a small expansion. As the conductive particles move apart from each other, most of them no longer conduct current and the resistance of the device increases sharply. The material will stay Òhot,Ó remaining in this high resistance state as long as the power is applied. The device will remain latched, providing continuous protection, until the fault is cleared and the power is removed. Reversing the phase transformation allows the carbon chains to re-form as the polymer re-crystallizes. The resistance quickly returns to its original value. ST 3 50 RA 090 RA 075 RA 060 RA 600 RA 400 RA 300 R E S E T TA B L E C I R C U I T P R O T E C T I O N When it comes to Polymeric Positive Temperature Coefficient (PPTC) circuit protection, you now have a choice. If you need a reliable source, look to polymeric resettable fuses from SCHURTER. Polymeric fuses are made from a conductive plastic formed into thin sheets, with electrodes attached to either side. The conductive plastic is manufactured from a nonconductive crystalline polymer and a highly conductive carbon black. The electrodes ensure even distribution of power through the device, and provide a surface for leads to be attached or for custom mounting. The phenomenon that allows conductive plastic materials to be used for resettable overcurrent protection devices is that they exhibit a very large non-linear Positive Temperature Coefficient (PTC) effect when heated. PTC is a characteristic that many materials exhibit whereby resistance increases with temperature. What makes the polymeric conductive plastic material unique is the magnitude of its resistance increase. At a specific transition temperature, the increase in resistance is so great that it is typically expressed on a log scale. 107 106 105 LOG R OHMS 104 103 102 101 100 0 20 40 60 80 TEMPERATURE °C 100 120 140 104 Schurter, Inc. ¥ Phone 707-778-6311 ¥ Fax 707-778-6401 ¥ E-mail info@schurter.com ¥ Website http://www.schurter.com www.DataSheet4U.com PRODUCT SELECTION To select the correct polymeric circuit protection device, complete the information listed below for the application, and then refer to the resettable overcurrent protector data sheets. A P P L I C AT I O N S The benefits of polymeric Resettable Overcurrent Protectors are being recognized by more and more design engineers, and new applications are being discovered every day. The use of polymeric types of devices have been widely accepted in the following applications and industries: 1. Determine the normal operating current: ______ amps 2. Determine the maximum circuit voltage (Vmax): ______ volts 3. Determine the fault current (Imax): ______ amps 4. Determine the operating temperature range: Minimum Temperature: ______ ¡C Maximum Temperature: ______ ¡C 5. Select a product family so that the maximum rating for Vmax and Imax is higher than the maximum circuit voltage and fault current in the application. 6. Using the Ihold vs. Temperature Table on the product family data sheet, select the polymeric device at the maximum operating temperature with an Ihold greater than or equal to the normal operating current. 7. Verify that the selected device will trip under fault conditions by checking in the Itrip table that the fault current is greater than Itrip for the selected device, at the lowest operating temperature. 8. Order samples and test in application. ¥ Personal computers ¥ Laptop computers ¥ Personal digital assistants ¥ Transformers ¥ Small and medium electric motors ¥ Audio equipment and speakers ¥ Test and measurement equipment ¥ Security and fire alarm systems ¥ Medical electronics ¥ Personal care products ¥ Point-of-sale equipment ¥ Industrial controls ¥ Automotive electronics and harness protection ¥ Marine electronics ¥ Battery-operated toys SchurterÕs resettable fuses cross to many like products already on the market. See our online cross list at www.schurterinc.com/cross.htm. 105 Schurter, Inc. ¥ Phone 707-778-6311 ¥ Fax 707-778-6401 ¥ E-mail info@schurter.com ¥ Website http://www.schurter.com www.DataSheet4U.com PFMD Polymeric PTC Resettable Fuse – Surface Mount Typical Time to Trip at 23 °C MD .02 0 0 MD .07 PF MD 5 .11 0 5 D.0 3 MD .05 PF M NEW • High Density Circuit Board Application: PF PF PF 100 Time to Trip (Seconds) Hard disk drives, PC motherboards PC peripherals Point-of-sale (POS) equipment PCMCIA cards • Packaged per EIA 481-2 standard 10 9E 1 0.1 Approvals: UL CSA TÜV recognition pending approval 0.01 0.001 0.1 1 10 100 Fault current (Amps) Dimensions A C Solder Pad Layouts 1.00 (0.039) 2.5 (0.098) 2.00 (0.079) PFMD.035 3.45 (0.136) PFMD.020, 050, 075, 110 1.78 (0.070) 3.15 (0.124) Typical Part Marking Represents total content. Layout may vary. PART IDENTIFICATION B MANUFACTURER'S TRADEMARK 110 9E MIN D TOP VIEW SIDE VIEW MIN Dimentions in mm / (inch) Technical Data Operating/Storage Temperature Maximum Device Surface Temperature in Tripped State Passive Aging Humidity Aging Thermal Shock Mechanical Shock Solvent Resistance Vibration Terminal material Termination pad solderability -40°C to +85°C 125°C +85°C, 1000 hours ±5% typical resistance change +85°C, 85% R.H. 1000 hours ±5% typical resistance change +125°C/-40°C 10 times ±10% typical resistance change MIL-STD-202, Method 213, No resistance change Condition 1 (100g, 6 seconds) MIL-STD-202, Method 215 No change MIL-STD-883C, Method 2007.1, No change Condition A Solder-plated copper Meets EIA Specification RS-186-9E, ANSI/J-STD-002 Cat.3 Test Procedures And Requirements Test Conditions Accept/Reject Criteria Verify dimensions and materials In still air @ 23°C At 8 Amps , Vmax, 23°C 30 min. at Ihold Vmax, Imax, 100 cycles Vmax, 48 hours Per PF physical description Rmin ≤ R ≤ Rmax T ≤ max. time to trip (seconds) No trip No arcing or burning No arcing or burning Test Visual/Mech. Resistance Time to Trip Hold Current Trip Cycle Life Trip Endurance 106 Schurter, Inc. • Phone 707-778-6311 • Fax 707-778-6401 • E-mail info@schurterinc.com • Website http://www.schurterinc.com www.DataSheet4U.com PFMD Technical Data, continued Electrical Characteristics Ihold Model I max. Amps V max. Volts Itrip Initial Resistance Ohms at 23°C R Min. R1Max. Max. Time To Trip at 23°C Amps Seconds Tripped Power Dissipation Amperes at 23°C Hold Trip Watts at 23°C PFMD.020.2 PFMD.035.2 PFMD.050.2 PFMD.075.2 PFMD.110.2 10 40 40 40 40 30.0 6.0 15.0 13.2 6.0 0.20 0.35 0.50 0.75 1.10 0.40 0.70 1.00 1.50 2.20 0.40 0.32 0.15 0.11 0.04 5.00 1.30 1.00 0.45 0.21 8.0 8.0 8.0 8.0 8.0 0.02 0.10 0.15 0.20 0.30 0.8 0.6 0.8 0.8 0.8 Product Dimensions Model PFMD.020.2 PFMD.035.2 PFMD.050.2 PFMD.