Datasheet Download

High Power Chip Resistors < Wide Terminal type >
LTR Series
Datasheet
Features
1) High joint reliability with long side terminations.
2) Highest power ratings in their class.
3) Guaranteed anti-surge characteristic in all series.
4) ROHM resistors have obtained ISO9001 / ISO / TS16949 certification.
Products List
Rated Power Limiting Element
(70°C)
Voltage
Size
Part No.
LTR10
LTR18
LTR50
LTR100
(mm) (inch)
1220
1632
2550
3264
0508
0612
1020
1225
(W)
0.25
0.75
1
2
(V)
150
200
200
200
Maximum
Overload
Voltage
(V)
300
400
400
400
Temperature Resistance
Coefficient Tolerance Resistance Range
(ppm / °C)
Series
Operating
Temperature
Range
(°C)
Automotive
Grade
Available
(AEC-Q200)
E24
E96∗
−55 to +155
Yes
(%)
±200
J(±5%)
±100
F(±1%)
±100
D(±0.5%)
±200
J(±5%)
±100
F(±1%)
±100
D(±0.5%)
±200
J(±5%)
±100
F(±1%)
±100
D(±0.5%)
±200
J(±5%)
±100
F(±1%)
±100
D(±0.5%)
1Ω
to
1MΩ
10Ω
to
1MΩ
1Ω
to
1MΩ
10Ω
to
1MΩ
1Ω
to
1MΩ
10Ω
to
1MΩ
1Ω
to
1MΩ
10Ω
to
1MΩ
∗E24 : Standard products, E96 : Custom products. (Class J is E24 series only)
Design and specifications are subject to change without notice.
Carefully check the specification sheet supplied with the product before using or ordering it.
Part Number Description
L T R
1 8
E Z P
J
Part No.
Size (mm [inch])
Packaging Specifications Code
LTR
10 (1220 [0508])
18 (1632 [0612])
50 (2550 [1020])
100 (3264 [1225])
Part No.
Code
Packaging
specifications
Quantity
/ Reel
LTR10
EZP
Paper tape
(4mm Pitch)
5,000
LTR18
EZP
Paper tape
(4mm Pitch)
5,000
LTR50
UZP
Embossed tape
(4mm Pitch)
5,000
LTR100
JZP
Embossed tape
(4mm Pitch)
4,000
(High Power Chip Resistors
/ Wide Terminal type)
Resistance
Tolerance
D ( ±0.5% )
F ( ±1% )
J ( ±5% )
1 0 5
Nominal Resistance
Resistance code, 3 or 4 digits.
000 denotes jumper type.
Resistance
tolerance
D,F
J
9.1
10
1M
1/4
:
:
4 digits
3 digits
Ex.)
1
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c 2015 ROHM Co., Ltd. All rights reserved.
○
Resistance
code
= 1R00
1R0
= 9R10
9R1
= 10R0
100
= 1004
105
( ±1% )
( ±5% )
( ±1% )
( ±5% )
( ±1%, ±0.5% )
( ±5% )
( ±1%, ±0.5% )
( ±5% )
2015.10 - Rev.H
Datasheet
LTR Series
Chip Resistor Dimensions and Markings
t
W
a
b
103
<Marking method>
There are three or four digits used for the calculation number
according to IEC code and “R”is used for the decimal point.
L
b
a
(Unit : mm)
Part No.
(mm)
(inch)
L
W
t
a
b
Marking
existence
LTR10
1220
0508
1.2±0.1
2.0±0.1
0.55±0.1
0.2±0.1
0.35±0.2
Yes
LTR18
1632
0612
1.6±0.15
3.2±0.15
0.55±0.1
0.3±0.2
0.5±0.2
Yes
LTR50
2550
1020
2.5±0.15
5.0±0.15
0.55±0.1
0.38±0.2
0.9±0.2
Yes
LTR100
3264
1225
3.2±0.15
6.4±0.15
0.55±0.15
0.4±0.25
1.13±0.25
No
Land
pattern Example
B
D
A
C
Land
(Unit : mm)
Dimensions
A
B
C
D
LTR10
0.50
2.70
2.00
1.10
LTR18
0.60
2.90
3.20
1.15
LTR50
0.75
3.35
5.00
1.30
LTR100
0.83
3.69
6.40
1.43
Part No.
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2015.10 - Rev.H
Datasheet
LTR Series
Derating Curve
When the ambient temperature exceeds 70°C, power dissipation must be adjusted according to the derating curves below.
LTR10 / 18 / 50 / 100
PERCENT RATED POWER (%)
100
80
60
40
20
0
−55
0
70
100
AMBIENT TEMPERATURE (°C)
155
Characteristics
Guaranteed Value
Resistor Type
Test Items
Test Conditions
Resistance
See P.1
20°C
Variation of resistance
with temperature
See P.1
Measurement : +20 / −55 / +20 / +125°C
Test voltage is the smaller one of 1 or 2
1 Rated voltage (current) ×2.5, 2s.
2 Maximum overload voltage
± (2.0%+0.1Ω)
Overload
A new uniform coating of minimum of
95% of the surface being immersed
and no soldering damage.
Solderability
± (1.0%+0.05Ω)
No remarkable abnormality on the appearance.
Resistance to
soldering heat
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
Rapid change of
temperature
± (1.0%+0.05Ω)
Test temp. : −55°C to +125°C 5cycle
Damp heat, steady state
± (3.0%+0.1Ω)
40°C, 93%RH (Relative Humidity)
Test time : 1,000h to 1,048h
Endurance at 70°C
± (3.0%+0.1Ω)
70°C
Rated voltage (current)
1.5h : ON − 0.5h : OFF
Test time : 1,000h to 1,048h
Endurance
± (3.0%+0.1Ω)
155°C
Test time : 1,000h to 1,048h
Resistance to solvent
± (1.0%+0.05Ω)
23±5°C, Immersion cleaning, 5±0.5min
Solvent : 2−propanol
± (1.0%+0.05Ω)
Without mechanical damage such as breaks.
Bend strength of
the end face plating
Static electric
characteristics
EIAJ ED-4701 / 300 TEST METHOD304
Voltage : 3kV
C : 100pF
R : 1.5kΩ
Apply cycle : 1time
± (5.0%+0.05Ω)
Compliance Standard(s) : IEC60115−8
JISC 5201−8
Maximum overload voltage (Test voltage)
LTR10
LTR18
LTR50
LTR100
300V
400V
400V
400V
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c 2015 ROHM Co., Ltd. All rights reserved.
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−
3/4
2015.10 - Rev.H
Datasheet
LTR Series
Tape Dimensions
(Unit : mm)
Paper
Tape
P0
P2
P1
Part No.
W
F
E
A0
B0
LTR10
8.0±0.3
3.5±0.05
1.75±0.1
1.45±0.1
2.3±0.1
LTR18
8.0±0.3
3.5±0.05
1.75±0.1
Part No.
D0
P0
P1
P2
T2
φD0
E
F
W
1.95
+0.1
−0.05
3.5
+0.15
−0.05
B0
LTR10
φ1.5
+0.1
0
4.0±0.1
4.0±0.1
2.0±0.05
Max 1.1
LTR18
φ1.5
+0.1
0
4.0±0.1
4.0±0.1
2.0±0.05
Max 1.1
A0
Top tape
Base paper
(Bottom tape)
Components
Cavity
T2
Embossed
(Unit : mm)
Tape
P0
Part No.
W
F
E
A0
B0
LTR50
12.0±0.3
5.5±0.05
1.75±0.1
3.4±0.2
5.6±0.2
LTR100
12.0±0.3
5.5±0.05
1.75±0.1
3.5±0.2
6.7±0.2
D0
P0
P1
P2
T2
P2
W
F
E
0
φD
B0
Part No.
A0
P1
LTR50
φ1.5
+0.1
0
4.0±0.1
4.0±0.1
2.0±0.05
Max 1.1
LTR100
φ1.5
+0.1
0
4.0±0.1
4.0±0.1
2.0±0.05
Max 1.1
K
02
04
06
A
08
06
D
04
B
02
A
08
Reel Dimensions
B
D
C
Label
C
Label
ACCORDING TO EIAJ ET-7200B
ACCORDING TO EIAJ ET-7200B (RRV)
(Unit : mm)
Part No.
A
B
LTR10
LTR18
LTR50
9
φ180
0
−1.5
φ60
LTR100
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c 2015 ROHM Co., Ltd. All rights reserved.
○
C
4/4
+1.0
0
D
+1.0
0
+1.0
13
0
φ13±0.2
2015.10 - Rev.H
Datasheet
Notice
Precaution on using ROHM Products
1.
If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1),
aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life,
bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales
representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any
ROHM’s Products for Specific Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are not designed under any special or extraordinary environments or conditions, as exemplified below.
Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the
use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our
Products under any special or extraordinary environments or conditions (as exemplified below), your independent
verification and confirmation of product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice-PAA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.001
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign
trade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data.
2.
ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the
Products with other articles such as components, circuits, systems or external equipment (including software).
3.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM
will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to
manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice-PAA-E
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.001
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2015 ROHM Co., Ltd. All rights reserved.
Rev.001
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