Radial Lead Fuses TR3® > Fast-Acting > 303 Series 303 Series, TR3®, Fast-Acting Fuse Description The 303 Series are TR3®, fast-acting type, 125V rated fuses designed in accordance to UL 248–14. Features • Reduced PCB space requirements • Vibration resistant • Direct solderable or plug-in versions • Lead-free • Halogen free • Internationally approved Agency Approvals Agency • Available from 50mA to 5A • Low internal resistance Agency File Number • Shock safe casing Ampere Range E67006 50mA-5A 051378 50mA-5A Electrical Characteristics Applications • Battery chargers • Power supplies • Consumer electronics • Industrial controllers Additional Information % of Ampere Rating Opening Time 200 60 Seconds, Maximum Datasheet Resources Samples Electrical Characteristics Amp Code 0050 0063 0080 0100 0125 0160 0200 0250 0315 0400 0500 0630 0800 1100 1125 1160 1200 1250 1315 1400 1500 Rated Current Voltage Rating 50mA 63mA 80mA 100mA 125mA 160mA 200mA 250mA 315mA 400mA 500mA 630mA 800mA 1.00A 1.25A 1.60A 2.00A 2.50A 3.15A 4.00A 5.00A 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V 125V Breaking Capacity 50A / 125VAC 60-60 Hz/cos ϕ - 1 50A / 63 VDC Voltage Drop 1.0×IN max. (mV) 800 780 730 700 650 600 550 500 450 400 380 160 155 150 145 140 130 125 120 110 105 Power Dissipation 1.0×IN max. (mW) 40 50 60 70 85 100 110 125 145 160 190 100 125 155 185 225 260 315 380 440 525 Melting Integral 10×IN max. (A2s) 0.00007 0.00013 0.0002 0.0004 0.0022 0.0029 0.0042 0.0082 0.015 0.025 0.042 0.015 0.025 0.039 0.059 0.11 0.17 0.23 0.45 1.0 1.5 Approvals ® X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Note: 1.00 means the number one with two decimal places. 1,000 means the number one thousand. © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/19/13 Radial Lead Fuses TR3® > Fast-Acting > 303 Series FAST ACTING DE-RATING CURVE Temperature Rerating Curve Average Time Current Curves TR3 / No. 303 00 0,0 10 140 I-t Characteristics 100 (Min-Max Limit) UL 248-14 Test value ,00 10 80 0 60 0 1,0 23°C 40 0 PERCENT OF RATING 120 20 -20 0 20 40 60 80 0 -40 10 0 10 Time (sec.) AMBIENT TEMPERATURE (°C) 1 0.1 1 0.0 01 0.0 1 1.5 2 3 4 5 6 7 8 9 10 15 IFault / I Rated Contact Littelfuse for individual I-t curves Soldering Parameters - Wave Soldering Recommended Process Parameters: 280 260 Wave Parameter 240 220 Preheat: 200 (Depends on Flux Activation Temperature) 180 160 140 120 100 80 60 40 Lead-Free Recommendation (Typical Industry Recommendation) Temperature Minimum: 100° C Temperature Maximum: Preheat Time: 150° C 60-180 seconds Solder Pot Temperature: 260° C Maximum Solder Dwell Time: 2-5 seconds Time (Seconds) Cooling Time Preheat Time Dwell Time 240 230 220 210 200 190 180 170 160 150 140 130 120 110 90 100 80 70 60 50 40 30 20 0 10 20 0 Temperature (°C) - Measured on bottom side of board 300 Recommended Hand-Solder Parameters: Solder Iron Temperature: 350° C +/- 5°C Heating Time: 5 seconds max. Note: These devices are not recommended for IR or Convection Reflow process. © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/19/13 Radial Lead Fuses TR3® > Fast-Acting > 303 Series Product Characteristics Base/Cap: Black Thermoplastic Base Polyamide PA 6.6, UL 94V-0 Brass, Nickel-plated Cap Round Pins: Copper alloy, Tin–plated Materials Lead Pull Strength 10 N (EN 60068-2-21) Solderability 260ºC, ≤ 3s. (Wave) 350ºC, ≤ 1s. (Soldering Iron) Soldering Heat Resistance 260ºC, 10s. (IEC 60068-2-20) 350ºC, 3s. (Soldering Iron) Operating Temperature -25ºC to +70ºC (consider de-rating) Climatic Category -25ºC/+70ºC/21 days (EN 60068-1..3) Stock Conditions +10ºC to +60ºC RH, ≤75% yearly average, without dew Vibration Resistance 24 cycles at 15 min. each (EN 60068-6) 10 - 60 Hz at 0.75 mm amplitude 60 - 2000 Hz at 10 g acceleration Part Numbering System Dimensions L max. 8 Ø6 2,54 1 +0,1 Ø 0,6 000 Tape/Ammopack (1,500 pcs.) 013 Long Leads - Bulk (200 pcs.) 042 Short Leads - Bulk (300 pcs.) Dimensions (mm) Holes in PCB Long Leads (L=18.8 mm) Short Leads (L=4.3 mm) Packaging Packaging Option 303 Series Tape & Ammopack Long Leads Short Leads Packaging Specification Quantity Quantity & Packaging Code Reel Size N/A N/A N/A 1,500 200 300 000 013 042 N/A N/A N/A © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/19/13