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| KTR18 Resistors Endured high voltage fixed thick film chip resistors KTR18 (1206 size: 1 / 4W) Features 1) Power rating of 1 / 4W 2) Limiting element voltage of KTR series is 2.5 times compared with that of MCR series. 3) Highly reliable chip resistor Ruthenium oxide dielectric offers superior resistance to the elements. 4) ROHM resistors have approved ISO-9001 certification. Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering it. Ratings Item Rated power Conditions Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70C. 100 80 60 40 20 0 Specifications 0.25W (1 / 4W) at 70C POWER LOAD (%) -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= PxR P: Rated power (W) R: Nominal resistance () Nominal resistance Operating temperature See Table 1. -55C to +155C Limiting element voltage 500V Table 1 Resistance tolerance F (1%) J (5%) Resistance range () Resistance temperature coefficient (ppm / C) 1 R 10M (E24) 1 R 10M (E24) 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. Rev.B 1/5 KTR18 Resistors Characteristics Item Resistance Variation of resistance with temperature Overload Guaranteed value Resistor type J : 5% F : 1% See Table.1 Test conditions (JIS C 5201-1) JIS C 5201-1 4.5 JIS C 5201-1 4.8 Measurement : -55 / +25 / +125C JIS C 5201-1 4.13 Rated voltage (current) x2.5, 2s. Limiting Element Voltagex2 : 1000V JIS C 5201-1 4.17 Rosin*Ethanol (25%WT) Soldering condition : 2355C Duration of immersion : 2.00.5s. JIS C 5201-1 4.18 Soldering condition : 2605C Duration of immersion : 101s. JIS C 5201-1 4.19 Test temp. : -55C to +125C 5cyc JIS C 5201-1 4.24 40C, 93%RH Test time : 1,000h to 1,048h JIS C 5201-1 4.25.1 Rated voltage (current), 70C 1.5h : ON - 0.5h : OFF Test time : 1,000h to 1,048h JIS C 5201-1 4.25.3 155C Test time : 1,000h to 1,048h JIS C 5201-1 4.29 235C, Immersion cleaning, 50.5min. Solvent : 2-propanol JIS C 5201-1 4.33 (2.0%+0.1) Solderability A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. (1.0%+0.05) No remarkable abnormality on the appearance. (1.0%+0.05) Resistance to soldering heat Rapid change of temperature Damp heat, steady state (3.0%+0.1) Endurance at 70C (3.0%+0.1) Endurance (3.0%+0.1) Resistance to solvent (1.0%+0.05) (1.0%+0.05) Without mechanical damage such as breaks. Bend strength of the end face plating External dimensions (Unit : mm) 1 0.30.25 2 No. 1 Material Thick film resistive element Silver thick film electrode Nickel electrode Sn electrode Alumina substrate Overcoating 3 2 3 0.50.25 0.550.1 3.20.15 5 4 4 5 6 6 1.60.15 Rev.B 2/5 KTR18 Resistors Packaging Reel Taping P0 P2 P2 D2 E F 08 06 04 02 02 04 06 08 A B D W B2 A2 Heat crimp cover/Tape Thick paper mount Label EIAJ ET-7200B compliant (Underside paper tape) (Unit: mm) Chip resistor Square punchout hole T2 C (Unit: mm) A B C D W 8.00.3 D2 1.5 +0.1 0 F 3.50.05 P2 4.00.1 E 1.750.1 P2 4.00.1 A2 +0.1 1.95 -0.05 P2 2.00.05 3.5 B2 +0.15 -0.05 T2 Max. 1.1 180 0 -1.5 60 +1 0 9 +1.0 0 130.2 Makeup of the part number KTR18 Part No. EZP J Nominal resistance Resistance code, 3 or 4 digits. Resistance tolerance F J 1% 5% Resistance tolerance F J : : Resistance code 3 digits 4 digits Packaging Specifications Code Part No. KTR18 Code EZP Resistance tolerance J(5%) F(1%) Packaging specifications Paper tape (4mm Pitch) Reel 180mm (7in.) Basic ordering unit(pcs) 5,000 Reel (180) : JEITA ET-7200B : Standard product Rev.B 3/5 KTR18 Resistors Dimensions 3.40 3.35 3.30 JIS C 5201-1 4.4 SAMPLE SIZE : n=20pcs MICROMETER 1.80 1.75 1.70 1.65 1.60 1.55 1.50 1.45 1 10 100 1k 10k 100k 1M 10M 0.75 JIS C 5201-1 4.4 SAMPLE SIZE : n=20pcs MICROMETER 0.70 0.65 JIS C 5201-1 4.4 SAMPLE SIZE : n=20pcs MICROMETER THICKNESS (mm) 1 10 100 1k 10k 100k 1M 10M LENGTH (mm) WIDTH (mm) 3.25 3.20 3.15 3.10 3.05 3.00 0.60 0.55 0.50 0.45 0.40 0.35 1 10 100 1k 10k 100k 1M 10M 1.40 RESISTANCE () RESISTANCE () RESISTANCE () Fig.2 Dimensions (length) Fig.3 Dimensions (width) Fig.4 Dimensions (thickness) Electrical characteristics TEMPERATURE COEFFICIENT (ppm/C) 6.0 JIS C 5201-1 4.5 SAMPLE SIZE : n=20pcs 20C 65%RH DC RESISTANCE (%) 6.0 JIS C 5201-1 4.5 SAMPLE SIZE : n=20pcs 20C 65%RH 500 400 300 200 100 0 -100 -200 -300 -400 -500 10 100 4.0 DC RESISTANCE (%) 4.0 2.0 0.0 -2.0 -4.0 -6.0 JIS C 5201-1 SEC 4.8 SAMPLE SIZE : n=10pcs 25C / -55C 25C / 125C 2.0 0.0 -2.0 -4.0 -6.0 10 100 1k 10k 100k 1M 10M 10 100 1k 10k 100k 1M 10M 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE () RESISTANCE () Fig.5 Resistance (J class) Fig.6 Resistance (F class) Fig.7 Variation resistance with temperature (J class) TEMPERATURE COEFFICIENT (ppm/C) 500 400 300 200 3.0 2.0 R/R (%) SOLDERD PERCENTAGE (%) JIS C 5201-1 SEC 4.8 SAMPLE SIZE : n=10pcs 25C / -55C 25C / 125C 5.0 4.0 JIS C 5201-1 4.13 SAMPLE SIZE : n=10pcs RATED VOLTAGEx2.5 TIMES : 2s MAXIMUM OVERLOAD VOLTAGE : 800V 100 90 80 70 60 50 40 30 10 100 1k 10k 100k 1M 10M 100 0 -100 -200 -300 -400 -500 10 100 1k 10k 100k 1M 10M 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 20 JIS C 5201-1 4.17 SAMPLE SIZE : n=10pcs SOLDERING CONDITION : 235C 2s 10 100 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE () RESISTANCE () Fig.8 Variation resistance with temperature (F class) Fig.9 Overload Fig.10 Solderability Rev.B 4/5 KTR18 Resistors 2.5 2.0 1.5 1.0 JIS C 5201-1 SEC 4.18 SAMPLE SIZE : n=10pcs SOLDERING CONDITION : 260C 10s 2.5 2.0 1.5 1.0 R/R (%) R/R (%) 4.0 JIS C 5201-1 SEC 4.19 SAMPLE SIZE : n=10pcs -55C / 125C 1000cyc 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 JIS C 5201-1 SEC 4.24 SAMPLE SIZE : n=10pcs 40C 93%RH WITH NO LOAD 1,000h R/R (%) 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 10 100 1k 10k 100k 1M 10M 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 10 100 1k 10k 100k 1M 10M -4.0 10 100 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE () RESISTANCE () Fig.11 Resistance to soldering heat Fig.12 Rapid change of temperature Fig.13 Damp heat , Steady state 4.0 3.0 2.0 R/R (%) 4.0 JIS C 5201-1 SEC 4.25.1 SAMPLE SIZE : n=10pcs 70C 1,000h THE RATED VOLTAGE 1.5h on, 0.5h off 2.0 JIS C 5201-1 SEC 4.25.3 SAMPLE SIZE : n=10pcs 155C WITH NO LOAD 1,000h 1.5 1.0 R/R (%) 3.0 2.0 R/R (%) JIS C 5201-1 SEC 4.29 SAMPLE SIZE : n=10pcs IPA, 5min. 1.0 0.0 -1.0 -2.0 -3.0 -4.0 10 100 1k 10k 100k 1M 10M 1.0 0.0 -1.0 -2.0 -3.0 -4.0 1 10 100 1k 10k 100k 1M 10M RESISTANCE () 0.5 0.0 -0.5 -1.0 -1.5 -2.0 10 100 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE () Fig.14 Endurance (at70C) Fig.15 Endurance Fig.16 Component solvent resistance 2.5 2.0 1.5 1.0 R/R (%) JIS C 5201-1 SEC 4.33 SAMPLE SIZE : n=10pcs ENDURANCE WITH 90mm WIDTH 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.17 Bend strength of the end face plating Rev.B 5/5 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.1 |
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