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LTR Series
Data Sheet
? Derating Curve
When the ambient temperature exceeds 70°C, power dissipation must be adjusted according to the derating curves below.
LTR10 / 18 / 50 / 100
100
80
60
40
20
0
? 55
0
70 100
155
AMBIENT TEMPERATURE ( ° C)
? Characteristics
Test Items
Resistance
Variation of resistance
with temperature
Overload
Solderability
Resistance to
soldering heat
Rapid change of
temperature
Damp heat, steady state
Endurance at 70 ° C
Endurance
Resistance to solvent
Bend strength of
the end face plating
Static electric
characteristics
Guaranteed Value
Resistor Type
See P.1
See P.1
± (2.0% + 0.1 Ω )
A new uniform coating of minimum of
95% of the surface being immersed
and no soldering damage.
± (1.0% + 0.05 Ω )
No remarkable abnormality on the appearance.
± (1.0% + 0.05 Ω )
± (3.0% + 0.1 Ω )
± (3.0% + 0.1 Ω )
± (3.0% + 0.1 Ω )
± (1.0% + 0.05 Ω )
± (1.0% + 0.05 Ω )
Without mechanical damage such as breaks.
± (5.0% + 0.05 Ω )
Test Conditions
20 ° C
Measurement : + 20 / ? 55 / + 20 / + 125 ° C
Rated voltage (current) × 2.5, 2s
Maximum overload voltage
Rosin·Ethanol : 25% (Weight)
Soldering condition : 235 ± 5 ° C
Duration of immersion : 2.0 ± 0.5s
Soldering condition : 260 ± 5 ° C
Duration of immersion : 10 ± 1s
Test temp. : ? 55 ° C to + 125 ° C 5cycle
40 ° C, 93%RH (Relative Humidity)
Test time : 1,000h to 1,048h
70 ° C
Rated voltage (current)
1.5h : ON ? 0.5h : OFF
Test time : 1,000h to 1,048h
155 ° C
Test time : 1,000h to 1,048h
23 ± 5 ° C, Immersion cleaning, 5 ± 0.5min
Solvent : 2 ? propanol
?
EIAJ ED-4701 / 300 TEST METHOD304
Voltage : 3kV
C : 100pF
R : 1.5k Ω
Apply cycle : 1time
Compliance Standard(s) : IEC60115 ? 8
JISC 5201 ? 8
? Chip weight (typical value)
Parameter
Weight
Unit
mg/pc
LTR10
5.58
LTR18
10.02
LTR50
24.18
LTR100
38.15
www.rohm.com
c 2012 ROHM Co., Ltd. All rights reserved.
3/4
2012.11 - Rev.D
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