0449001.MR

Surface Mount Fuses NANO2® > Slo-Blo® > 449 Series 449 Series Fuse PS E Description Features t
8JEF
PQFSBUJOH
temperature range t
-FBEGSFF Agency Approvals AGENCY t
4MP#MP AGENCY FILE NUMBER AMPERE RANGE E10480 375mA - 5A NBK030205 1A - 5A PS E ® t
4NBMM
TJ[F
t
8JEF
SBOHF
PG
DVSSFOU
ratings available t
-PX
UFNQFSBUVSF
de-rating Applications Secondary protection for space constrained applications: t
/PUFCPPL
1$ t
5FMFDPN
TZTUFN Electrical Characteristics for Series t
-$%1%1
57
t
8JSFMFTT
CBTFTUBUJPO t
-$%
NPOJUPS t
8IJUF
HPPET t
-$%1%1
QBOFM t
(BNF
DPOTPMF t
-$%
CBDLMJHIU
JOWFSUFS t
0GmDF
"VUPNBUJPO
equipment % of Ampere Rating Opening Time 100% 4 hours, Minimum 200% 1 sec., Min.; 60 sec., Max. t
1PXFS
TVQQMZ 300% 0.2 sec., Min.; 3 sec., Max t
/FUXPSLJOH
800% 0.02 sec., Min.; 0.1 sec., Max. t
1PSUBCMF
%7%
QMBZFS t
#BUUFSZ
DIBSHJOH
DJSDVJU
protection t
*OEVTUSJBM
FRVJQNFOU t
1$
TFSWFS t
$PPMJOH
GBO
TZTUFN t
4UPSBHF
TZTUFN t
.FEJDBM
FRVJQNFOU t

"VUPNPUJWF Electrical Specifications by Item Ampere Rating (A) Amp Code Max Voltage Rating (V) Interrupting Rating Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2sec) Agency Approvals PS E 0.375 0.375 125 1.5130 0.088 x 0.500 0.500 125 0.7633 0.258 x 0.750 0.750 125 0.4080 0.847 x 1.00 001. 125 0.2516 1.76 x x 1.50 01.5 125 50 amperes @125 VAC/ VDC 0.1186 4.70 x x 2.00 002. 125 0.0708 6.76 x x 2.50 02.5 125 PSE: 100 amperes @100 VAC 0.0400 13.18 x x 3.00 003. 125 0.0352 19.55 x x 3.50 03.5 125 0.0261 32.70 x x 4.00 004. 125 0.0227 40.80 x x 5.00 005. 125 0.0171 59.59 x x Notes: - l2t calculated at 8ms. Resistance is measured at 10% of rated current, 25ºC © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/449.html for current information. 53 Revised: January 7, 2009 449 Series 449 Series The lead free NANO2 Slo-Blo® fuse is RoHS compliant and 100% lead-free. This product is fully compatible with lead-free solder alloys and higher temperature profiles associated with lead-free assembly. The Slo-Blo® design has enhanced inrush withstand characteristics over the NANO2 Fast-Acting Fuse. The unique time delay feature of this fuse design helps solve the problem of nuisance “opening” by accommodating inrush currents that normally cause a fast-acting fuse to open. Mount Fuses IntroductionSurface to Circuit Protection NANO2® > Slo-Blo®Transientology > 449 Series .750A 1A 1.5A 2A 2.5A 3A 3.5A 4A 5A Average Time Current Curves .375A .500A Temperature Rerating Curve 1000 TIME IN SECONDS 100 10 1 Note: 1. Derating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 0.1 0.01 0 1 10 100 CURRENT IN AMPERES Soldering Parameters Pre Heat Pb – Free assembly 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 120 secs TL TS(max) 3°C/second max. TS(max) to TL - Ramp-up Rate 3°C/second max. - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 90 seconds 250 Time within 5°C of actual peak Temperature (tp) 20 – 40 seconds Ramp-down Rate 5°C/second max. Time 25°C to peak Temperature (TP) 8 minutes max. Do not exceed 260°C Wave Soldering Parameters 260°C Peak Temperature, 3 seconds max. 449 Series tL Ramp-down TS(min) Preheat tS 25 Peak Temperature (TP) +0/-5 Critical Zone TL to TP Ramp-up - Temperature Min (Ts(min)) Average ramp up rate (Liquidus Temp (TL) to peak Reflow tP TP Temperature Reflow Condition time to peak temperature (t 25ºC to peak) Time °C 54 Revised: January 7, 2009 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/449.html for current information. Surface Mount Fuses NANO2® > Slo-Blo® > 449 Series Product Characteristics Body: Ceramic Terminations: Gold-plated Caps Product Marking Brand, Amperage Rating Operating Temperature Moisture Sensitivity Level MIL-STD-202, Method 107, Test Condition B, 5 cycles, -65°C to 125°C, 15 minutes @ each extreme MIL-STD-202, Method 213, Test I: Deenergized. 100G’s pk amplitude, sawtooth wave 6ms duration, 3 cycles XYZ+xyz = 18 shocks MIL-STD-202, Method 201: 0.03" amplitude, 10-55 Hz in 1 min. 2hrs each XYZ=6hrs Thermal Shock Mechanical Shock -55°C to 125°C Level 1, J-STD-020C Vibration Solderability MIL-STD-202, Method 208 Insulation Resistance (after Opening) MIL-STD-202, Method 302, Test Condition A (10,000 ohms minimum) Moisture Resistance MIL-STD-202, Method 106, 10 cycles Salt Spray Resistance to Soldering Heat Dimensions Part Numbering System 6.86 (.270") 6.10 (.240") 3.15 (.124") F 2.95 1.96 (.116") (.077") Recommended pad layout MIL-STD-202, Method 101, Test Condition B (48hrs) MIL-STD-202, Method 210, Test condition B (10 sec at 260°C) 0449 001. M R SERIES T 1A 1.45 (.057") AMP Code* Refer to Electrical characteristics table 2.69 (.106") QUANTITY Code M = 1000 pcs 2.69 (.106") PACKAGING Code R = Tape and Reel *Example: 0.375 Amp product is 0449.375MR (1 amp product shown above). Packaging Packaging Option Packaging Specification Quantity Quantity & Packaging Code 12mm Tape and Reel EIA RS-481-2 (IEC 286, part 3) 1000 MR © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/449.html for current information. 55 Revised: January 7, 2009 449 Series 449 Series Materials