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POLYFUSE(R) Resettable PTCs
Surface Mount > Lo Rho Series
Lo Rho Surface Mount Series
Description The Littelfuse Lo Rho Surface Mount PPTC (polymer positive temperature coefficient) series offers ultra low normal operating resistance while maintains the same performance of existing Littelfuse PPTC products. Available in 5 hold current ratings, all devices are TUV and UL certified and possess a maximum fault current rating of 40A. Features * Lo Rho (low resistance at normal operating hold current) * RoHS compliant, Lead Free and Halogen Free * Fast response to fault currents Applications * USB peripherals * Disk drives * CD-ROMs * Plug and play protection for motherboards and peripherals * PDAs / digital cameras * Game console port protection * Compact design saves board space * Thin-profile <0.75mm * Compatible with high temperature solders
Agency Approvals
AGENCY AGENCY FILE NUMBER E183209 R50119118
Electrical Characteristics
Maximum Time To Trip Current (A) 8.00 8.00 8.00 8.00 8.00 17 .50 9.50 Time (Sec.) 0.20 0.30 0.30 0.30 3.00 2.00 4.50 Resistance R min () 0.040 0.030 0.015 0.010 0.005 0.003 0.003 R 1max () 0.160 0.130 0.100 0.065 0.024 0.018 0.025
X X X X X X X X X X X X X X
Part Number
Marking
I hold (A) 0,75 1.10 1.10 1.50 2.00 3.50 1.90
I trip (A) 1.50 1.80 2.20 3.00 4.00 7 .00 4.90
V max (Vdc) 6 6 6 6 6 6 6
I max (A) 50 50 50 50 50 50 50
Pd max. (W) 0.6 0.6 0.8 0.8 0.8 0.8 1.0
Agency Approvals
0805L075SLYR 0805L110SLYR 1206L110SLYR 1206L150SLYR 1210L200SLYR 1210L350SL-SYR 1812L190SLPR
-G -H -H -K -L -T LF 19
I hold = Hold current: maximum current device will pass without tripping in 20C still air. I trip = Trip current: minimum current at which the device will trip in 20C still air. V max = Maximum voltage device can withstand without damage at rated current (I max) I max = Maximum fault current device can withstand without damage at rated voltage (Vmax) P d = Power dissipated from device when in the tripped state at 20C still air. R min = Minimum resistance of device in initial (un-soldered) state. R 1max = Maximum resistance of device at 20C measured one hour after tripping or reflow soldering of 260C for 20 sec. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.
(c) 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LoRho.html for current information.
9 Revised: June 4, 2010
Lo Rho Series
Lo Rho Series
POLYFUSE(R) Resettable PTCs
Surface Mount > Lo Rho Series
Temperature Rerating
Ambient Operation Temperature -40C Part Number 0805L075SLYR 0805L110SLYR 1206L110SLYR 1206L150SLYR 1210L200SLYR 1210L350SL-SYR 1812L190SLPR 1.24 1.93 2.00 2.67 3.26 5.00 3.00 1.07 1.65 1.70 2.32 2.87 4.60 2.58 0.94 1.38 1.40 1.95 2.50 4.05 2.22 -20C 0C 20C 40C 60C 70C 85C Hold Current (A) 0.75 1.10 1.10 1.50 2.00 3.50 1.90 0.62 0.83 0.83 1.15 1.70 2.80 1.49 0.47 0.55 0.56 0.78 1.29 2.00 1.14 0.37 0.41 0.44 0.64 1.09 1.60 0.93 0.23 0.21 0.24 0.36 0.78 1.00 0.61
Average Time Current Curves
/6/ /6/ /6/ /6/ /6/ /6/ /6/
Temperature Rerating Curve
170% 150% Percentage of Rated Current 130% 110% 90% 70% 50% 30%
LoRho Series
Time in Seconds
10% -40 -30 -20 -10 0 10 20 30 40 Temperature (C) 50 60 70 80
Environmental Specifications
Operating/Storage Temperature Maximum Device Surface Temperature in Tripped State

-40C to +85C
125C +85C, 1000 hours -/+10% typical resistance change +85C, 85% R.H.,100 hours -/+15% typical resistance change MIL-STD-202, Method 107G +85C/-40C 20 times -30% typical resistance change MIL-STD-202, Method 215 No change MIL-STD-883C, Method 2007 .1, Condition A No change Level 1, J-STD-020C
Passive Aging

Current in Amperes
Humidity Aging
The average time current curves and Temperature Rerating curve performance is affected by a number or variables, and these curves provided as guidance only. Customer must verify the performance in their application.
Thermal Shock
Physical Specifications
Solder-Plated Copper (Solder Material: Matte Tin (Sn)) Meets EIA Specification RS186-9E, ANSI/J-STD-002, Category 3.
Solvent Resistance
Terminal Material
Vibration
Lead Solderability
Moisture Sensitivity Level
Lo Rho Series
10 Revised: June 4, 2010
(c) 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LoRho.html for current information.
POLYFUSE(R) Resettable PTCs
Surface Mount > Lo Rho Series
Soldering Parameters
Profile Feature Average Ramp-Up Rate (TS(max) to TP)
Temperature Min (Ts(min))
Pb-Free Assembly 3C/second max 150C 200C 60 - 180 secs 217C 60 - 150 seconds 260+0/-5 C 20 - 40 seconds 6C/second max 8 minutes Max.
-- All temperature refer to topside of the package, measured on the package body surface -- If reflow temperature exceeds the recommended profile, devices may not meet the performance requirements -- Recommended reflow methods: IR, vapor phase oven, hot air oven, N2 environment for lead -- Recommended maximum paste thickness is 0.25mm (0.010 inch) -- Devices can be cleaned using standard industry methods and solvents -- Devices can be reworked using the standard industry practices
Pre Heat:
Temperature Max (Ts(max)) Time (Min to Max) (ts)
Time Maintained Temperature (TL) Above:
Temperature (tL)
Peak / Classification Temperature (TP) Time within 5C of actual peak Temperature (tp) Ramp-down Rate Time 25C to peak Temperature (TP)
Dimensions
Device Dimensions Solder Pad Layout
A
C
Side View
Top View
B
G
H
F
F
Bottom View
D E
Marking code varies by device -See Electrical Characteristics table
Device Dimension Part Number A mm
Min Max Min
Solder Pad Layout D mm E mm
Min Max Max
B mm
Max Min
C mm
Max Min
F mm 1.00 1.00 1.00 1.00 1.00 1.00 1.78
G mm 1.20 1.20 1.80 1.80 2.00 2.00 3.45
H mm 1.50 1.50 1.80 1.80 2.50 2.50 3.15
0805L075SLYR 0805L110SLYR 1206L110SLYR 1206L150SLYR 1210L200SLYR 1210L350SL-SYR 1812L190SLPR
2.00 2.20 1.20 2.00 2.20 1.20 3.00 3.40 1.50 3.00 3.40 1.50
1.50 0.40 0.75 0.20 1.50 0.40 0.75 0.20 1.80 0.40 0.75 0.25 1.80 0.40 0.70 0.25 0.25
0.55 0.55 0.75 0.75 0.75 0.75 1.20
0.05 0.10 0.10 0.10 0.20 0.20 0.25
0.45 0.45 0.45 0.45 0.50 0.50 0.65
3.00 3.43 2.35 2.80 0.40 0.70 0.25 3.00 3.43 2.35 2.80 0.60 1.00 4.37 4.73 3.07 3.41 0.40 0.70 0.30
(c) 2010 Littelfuse, Inc Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LoRho.html for current information.
11 Revised: June 4, 2010
Lo Rho Series
Lo Rho Series
POLYFUSE(R) Resettable PTCs
Surface Mount > Lo Rho Series
Part Ordering Number System
Packaging
Quantity & I hold I hold Packaging Quantity Packaging (A) Code Option Codes 0.75 1.10 1.10 1.50 2.00 1.90 075 110 110 150 200 350 190 Tape & Reel 4000 4000 4000 4000 4000 4000 2000 YR YR YR YR YR YR PR
0805 L 110 SL Y R
Part Number
PACKAGING STYLE R: Tape & Reel QUANTITY CODE P: 2000 Y: 4000 SL: LoRho PTC Series I HOLD HOLD CURRENT CODE L: LITTELFUSE SURFACE MOUNT PPTC SIZE
SERIES
0805L075SLYR 0805L110SLYR 1206L110SLYR 1206L150SLYR 1210L200SLYR 1812L190SLPR
1210L350SL -SYR 3.50
Tape and Reel Specifications
TAPE SPECIFICATIONS: EIA-481-1 (mm) 0805L075SL 0805L110SL 1206L110SL 1206L150SL 1210L200SL 1210L350SL-S 1812P190SL REEL DIMENSIONS: EIA-481-1 (mm) 0805L075SL 0805L110SL 1210L200SL 1206L110SL 1206L150SL 1812P190SL
W F E1 D0 D1 P0 P1 P2 A0 B0 T K0 Leader min. Trailer min.
8.0+/- 0.10 3.5+/- 0.05 1.75+/- 0.10 1.55+/- 0.05 1.0 (min) 4.0+/- 0.10 4.0+/- 0.10 2.0+/- 0.05 1.45+/- 0.10 2.30+/- 0.10 0.25+/- 0.10 0.74+/- 0.10 390 160
8.15+0.15-0.30 3.50+/- 0.05 1.75+/- 0.10 1.55+/- 0.05 1.00 (MIN) 4.00+/- 0.10 4.00+/- 0.10 2.00+/- 0.05 1.95+/- 0.10 3.65+/- 0.10 0.25+/- 0.10 0.87+/- 0.10 390 160
8.0+/- 0.30 3.5+/- 0.05 1.75+/- 0.10 1.55+/- 0.05 1.0 (min) 4.0+/- 0.10 4.0+/- 0.10 2.0+/- 0.05 2.82+/- 0.10 3.46+/- 0.10 0.25+/- 0.10 1.00+/- 0.10 390 160
12.00+0.30-0.10 5.50+/- 0.05 1.75+/- 0.10 1.50+0.10 1.50+0.25 4.00+/- 0.10 8.00+/- 0.10 2.00+/- 0.05 3.58+/- 0.10 4.93+/- 0.10 0.25+/- 0.10 1.02+/- 0.10 390 160
H W D F C H1 W1 W2 W3 W4
12.0+/- 0.05 9.0+/- 0.5 O60+0.5 O13.0+/- 0.2 O178+/- 1.0 11+/- 0.5 2.2+/- 0.5 3.0+0.5 4.0+0.5 5.5+0.5
16.0+/- 0.2 13.2+/- 1.5 O 60.2+/-0.5 O 13.0+/- 0.5 O 178+/- 1.0 11+/- 0.5 2.5+0.5 3.0+0.5 4.0+0.5 5.0+0.5
Tape and Reel Diagram
H P1 P0 D0 P2 E1 W4 W3 D F W W2 C
T
D2
F W1
W
A0
K0
B0
12 Revised: June 4, 2010
H1
Lo Rho Series
(c) 2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/LoRho.html for current information.

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