High voltage resistance chip resistors
KTR series Datasheet
●Features
1)Twice the rated voltage of conventional products..
2)Perfect for use in high voltage circuit. (Camera Flash circuit, etc)
3)ROHM resistors have obtained ISO9001 / ISO / TS16949 certification.
4)Corresponds to AEC-Q200.
●Products list
Part No.
Size Rated
power
(70℃)
Limiting
plement
voltage
Temperature
coefficient
Resistance
tolerance Resistance range
Operating
temperature
range
Automotive
grade
available
(mm) (inch) (W) (V) (ppm / ℃) (%) (Ω) (℃)
KTR03 1608 0603 0.10 350
±200 F ( ±1% ) 1≦R≦10 (E24/96 series)
-55 ～ +155 Yes±100 F ( ±1% ) 10≦R≦10M (E24/96 series)
±200 J ( ±5% ) 1≦R≦10M (E24 series)
KTR10 2012 0805 0.125 400 ±100 F ( ±1% ) 1≦R≦10M (E24/96 series) -55 ～ +155 Yes
±200 J ( ±5% ) 1≦R≦10M (E24 series)
KTR18 3216 1206 0.25 500 ±100 F ( ±1% ) 1≦R≦10M (E24/96 series) -55 ～ +155 Yes
±200 J ( ±5% ) 1≦R≦10M (E24 series)
KTR25 3225 1210 0.33 600 ±100 F ( ±1% ) 1≦R≦10M (E24/96 series) -55 ～ +155 Yes
±200 J ( ±5% ) 1≦R≦10M (E24 series)
* E24 : Standard products, E96 : Custom products.
●● Part number description
K T R 1 0 E Z P J 1 0 0
Part No. Size (mm [inch]) Packaging specifications code Resistance
tolerance Nominal resistance
KTR
(High voltage
resistance
chip resistors)
03(1608 [0603]) Part No. Code Packaging
specifications
Quantity
/ Reel F( ±1% )
J ( ±5% )
Resistance code, 3 or 4 digits.
10(2012 [0805]) 000 denotes jumper type.
18(3216 [1206]) KTR03 EZP Paper tape
(4mm Pitch) 5,000 Resistance
tolerance
Resistance
code
25(3225 [1210])
KTR10 EZP Paper tape
(4mm Pitch) 5,000 F：4 digits
J：3 digits
KTR18 EZP Paper tape
(4mm Pitch) 5,000 EX.)
1Ω = 1R00 (±1%)
KTR25 JZP Embossed tape
(4mm Pitch) 4,000 1R0 (±5%)
10Ω = 10R0 (±1%)
100 (±5%)
1MΩ = 1004 (±1%)
105 (±5%)
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© 2016 ROHM Co., Ltd. All rights reserved. 1/4 2018.09 - Rev.F
KTR series Datasheet
●Chip resistor dimensions and markings
■KTR03 ■KTR10/18/25
<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.
(Unit:mm)
Part No. (mm) (inch) L W t a b Marking
existence
KTR03 1608 0603 1.60±0.10 0.80±0.10 0.45±0.10 0.30±0.20 0.30±0.20 No*
KTR10 2012 0805 2.00±0.10 1.25±0.10 0.55±0.10 0.30±0.20 0.40±0.20 Yes
KTR18 3216 1206 3.20±0.15 1.60±0.15 0.55±0.10 0.30±0.25 0.50±0.25 Yes
KTR25 3225 1210 3.20±0.15 2.50±0.15 0.55±0.10 0.30±0.25 0.50±0.25 Yes
*Only with spuare mark
●Land pattern example
(Unit:mm)
Dimensions A B C D
Part No.
KTR03 1.0 2.0 0.8 0.5
KTR10 1.2 2.6 1.15 0.7
KTR18 2.2 4.0 1.5 0.9
KTR25 2.2 4.0 2.3 0.9
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© 2016 ROHM Co., Ltd. All rights reserved. 2/4 2018.09 - Rev.F
KTR series Datasheet
●Derating curve
When the ambient temperature exceeds 70°C, power dissipation must be adjusted according to the derating curves below.
■KTR03/10/18/25
●Characteristics
Test items Guaranteed > Test conditions
Resistor type
Resistance See P.1 20℃
Variation of resistance
with temperature See P.1 Measurement：+25/-55, +25/+125℃
Overload ±(2.0％＋0.1Ω)
Test voltage is the smaller one of ① or ②
①Rated voltage(current)×2.5， 2s
②Maximum overload voltage ※
Solderability
A new uniform coating of minimum
of 95% of the surface being
immersed and no soldering
damage.
Rosin-ethanol solution(25% weight)
Soldering condition：245±5℃
Duration of immersion：2.0±0.5s
Resistance to
soldering heat
±(1.0％＋0.05Ω)
No remarkable abnormality on the appearance.
Soldering condition：260±5℃
Duration of immersion：10±1s
Rapid change of
temperature ±(1.0％＋0.05Ω) Test temp：-55℃～+125℃ 5cycle
Damp heat, steady state ±(3.0％＋0.1Ω) 40℃，93％(Relative humidity)
Test time：1,000h
Endurance at 70℃±(3.0％＋0.1Ω)
Rated voltage(current),70℃
1.5h:ON－0.5h:OFF
Test time：1,000h
Endurance ±(3.0％＋0.1Ω) 155℃
Test time：1,000h
Resistance to solvent ±(1.0％＋0.05Ω) 23±5℃ Immersion cleaning,
Solvent: 2-propanol
Bend strength of
the end face plating
±(1.0％＋0.05Ω)
Without mechanical damage such as breaks. -
Compliance Standard(s) : IEC60115-8
※Maximum overload voltage (Test voltage) JISC 5201-8
KTR03 KTR10 KTR18 KTR25
500V 800V 1000V 1200V
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© 2016 ROHM Co., Ltd. All rights reserved. 3/4 2018.09 - Rev.F
KTR series Datasheet
●Tape dimensions
■Paper tape (Unit : mm)
Part No. W F E A0 B0
KTR03 8.0±0.3 3.5±0.05 1.75±0.1 1.1±0.1 1.9±0.1
KTR10 8.0±0.3 3.5±0.05 1.75±0.1 1.65+0.2
-0.1 2.4+0.2
-0.1
KTR18 8.0±0.3 3.5±0.05 1.75±0.1 1.95+0.1
-0.05 3.5+0.15
-0.05
Part No. D0 P0 P1 P2 K
KTR03 Φ1.5+0.1
04.0±0.1 4.0±0.1 2.0±0.05 MAX1.1
KTR10 Φ1.5+0.1
04.0±0.1 4.0±0.1 2.0±0.05 MAX1.1
KTR18 Φ1.5+0.1
04.0±0.1 4.0±0.1 2.0±0.05 MAX1.1
■Embossed tape (Unit : mm)
Part No. W F E A0 B0
KTR25
8.0±0.3 3.5±0.05 1.75±0.1 3.0±0.1 3.5±0.1
D0 P0 P1 P2 K
Φ1.5+0.1
04.0±0.1 4.0±0.1 2.0±0.05 MAX1.1
●Reel dimensions
(Unit : mm)
Part No. A B C D
KTR03
Φ1800
-1.5 Φ60+1
09+1.0
0Φ13±0.2
KTR10
KTR18
KTR25
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© 2016 ROHM Co., Ltd. All rights reserved. 4/4 2018.09 - Rev.F
Notice-PAA-E Rev.003
© 2015 ROHM Co., Ltd. All rights reserved.
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
CLASSⅢ
CLASSⅡb
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 depending on ambient temperature. When used in sealed area, confirm that it is the use in
the range that does not exceed the maximum junction 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 Rev.003
© 2015 ROHM Co., Ltd. All rights reserved.
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
A two-dimensional barcode 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.
DatasheetDatasheet
Notice – WE Rev.001
© 2015 ROHM Co., Ltd. All rights reserved.
General Precaution
1. Before you use our Products, you are requested to carefully read this document and fully understand its contents.
ROHM shall not be in any way responsible or liable for failure, malfunction or accident arising from the use of any
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this document is current as of the issuing date and subject to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the latest information with a ROHM sales
representative.
3. The information contained in this document is provided on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate and/or error-free. ROHM shall not be in any way responsible or
liable for an y damages, expenses or losses incurred by you or third parties resulting from inaccuracy or errors of or
concerning such information.
