Rohm LTR18EZPFF High power chip resistor Datasheet

High Power Chip Resistors
<Wide Terminal type>
LTR18 (3216 size : 1 / 2W)
Features
1) mproved welding strength
The structure of longer electrodes provides the wider welding area than the chip resistors with normal electrodes, and this
enhanced the solder welding strength.
2) Increased surge-resistance
This is achieved by Rohm’s original trimming technology plus resistive element patterning.
3) High-power tolerance
Two times of the rated power is guaranteed than the normal-electrode resistors.
ROHM resistors are ISO-9001 & ISO/TS16949 certified.
Applications
Automotive, industrial and power supply.
Ratings
Design and specifications are subject to change without notice.
Carefully check the specification sheet before using or ordering it.
Item
Rated power
Conditions
Specifications
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°C.
0.5W (1 / 2W)
at 70°C
100
POWER LOAD (%)
80
60
40
20
0
−55
0
70
100
155
AMBIENT TEMPERATURE (°C)
Fig.1
Rated voltage
The voltage rating is calculated by the following equation.
If the value obtained exceeds the limiting element voltage,
the voltage rating is equal to the maximum operating voltage.
E: Rated voltage (V)
E= P×R
P: Rated power (W)
R: Nominal resistance (Ω)
Nominal resistance
See Table 1.
Operating temperature
D(±0.5%) F(±1%) J(±5%)
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c 2010 ROHM Co., Ltd. All rights reserved.
○
Limiting element voltage
200V
−55°C to + 155°C
1/3
2010.06 - Rev.E
LTR18
Data Sheet
Table 1
Resistance tolerance
Resistance range
(Ω)
10 to 1M (E24)
D (±0.5%)
F (±1%)
1 to 1M (E24)
J (±5%)
Resistance temperature coefficient
(ppm/°C)
±100
±100
±200
Before using components in circuits where they will be exposed to transients such as pulse loads (short–duration, high– level
loads), be certain to evaluate the component in the mounted state. In addition, the reliability and performance of this
component cannot be guaranteed if it is used with a steady state voltage that is greater than its rated voltage.
Characteristics
Guaranteed value
Resistor type
Item
J : ±5%
F : ±1%
D : ±0.5%
Resistance
Variation of resistance
with temperature
Resistance to
soldering heat
JIS C 5201-1 4.5
JIS C 5201-1 4.8
Measurement : −55 / +25 / +125°C
See Table.1
JIS C 5201-1 4.13
Rated voltage (current) ×2.5, 2s.
Maximum overload voltage : 200V
± (2.0%+0.1Ω)
Overload
Solderability
Test conditions (JIS C 5201-1)
A new uniform coating of minimum of
95% of the surface being immersed
and no soldering damage.
± (1.0%+0.05Ω)
No remarkable abnormality on the appearance.
Rapid change of
temperature
JIS C 5201-1 4.19
Test temp. : −55°C to +125°C 5cyc
± (3.0%+0.1Ω)
JIS C 5201-1 4.24
40°C, 93%RH
Test time : 1,000h to 1,048h
± (3.0%+0.1Ω)
JIS C 5201-1 4.25.1
Rated voltage (current), 70°C
1.5h : ON − 0.5h : OFF
Test time : 1,000h to 1,048h
± (3.0%+0.1Ω)
JIS C 5201-1 4.25.3
155°C
Test time : 1,000h to 1,048h
± (1.0%+0.05Ω)
JIS C 5201-1 4.29
23±5°C, Immersion cleaning, 5±0.5min.
Solvent : 2-propanol
Endurance at 70°C
Endurance
Resistance to solvent
± (1.0%+0.05Ω)
Without mechanical damage such as breaks.
Static electric
characteristics
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c 2010 ROHM Co., Ltd. All rights reserved.
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JIS C 5201-1 4.18
Soldering condition : 260±5°C
Duration of immersion : 10±1s.
± (1.0%+0.05Ω)
Damp heat, steady state
Bend strength of
the end face plating
JIS C 5201-1 4.17
Rosin·Ethanol (25%WT)
Soldering condition : 235±5°C
Duration of immersion : 2.0±0.5s.
JIS C 5201-1 4.33
EIAJ ED-4701/300 Test method 304
Voltage : 3kv
C : 100pF
R : 1.5kΩ
Apply cycle : 1 time
± (5.0%+0.05Ω)
2/3
2010.06 - Rev.E
LTR18
Data Sheet
Dimensions (Unit : mm)
0.55±0.1
3.2±0.15
1.6±0.15
0.5±0.2
0.3±0.2
1.6±0.15
No.
Material
1
Resistive element
(Oxide metal thick film)
2
Silver thick film electrode
3
Nickel electrode
4
Sn electrode
5
Alumina substrate
6
Overcoating (Resin)
Packaging
Reel
Taping
P0
P2
P1
φD0
E
F
W
02
04
06
08
06
D
04
B
02
A
08
B0
A0
Heat crimp cover/Tape
Thick paper (Underside paper tape) Chip resistor Square punchout hole
mount
T2
C
Label
EIAJ ET-7200B compliant
(Unit: mm)
W
(Unit: mm)
A
φ180
B
0
−1.5
φ60
C
+1
0
9
+1.0
0
8.0±0.3
D
F
3.5±0.05
D0
φ13±0.2
φ1.5
+0.1
0
E
A0
1.75±0.1
+0.2
1.65
−0.1
B0
2.4
+0.2
−0.1
P0
P1
P2
T2
4.0±0.1
4.0±0.1
2.0±0.05
Max. 1.1
Part designation
L T R 1 8
E Z P
J
Resistance tolerance
Part No.
D
F
J
±0.5%
±1%
±5%
Nominal resistance
Resistance code, 3 or 4 digits.
Resistance
tolerance
F,D
J
Resistance
code
:
:
4 digits
3 digits
Packaging Specifications Code
Part No.
Code
LTR18
EZP
Resistance tolerance
D(±0.5%) F(±1%)
J(±5%)
Packaging specifications
Paper tape (4mm Pitch)
Reel
φ180mm (7inch)
Basic ordering unit
(pcs)
5,000
Reel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B"
: Standard product
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c 2010 ROHM Co., Ltd. All rights reserved.
○
3/3
2010.06 - Rev.E
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