Thick film rectangular

Transcription

1 Thick film rectangular (212 size : 1 / 8W)!Features 1) Power rating of 1 / 8W 2) Highly reliable chip resistor Ruthenium oxide dielectric offers superior resistance to the elements. 3) Electrodes not corroded by soldering Thick film makes the electrodes very strong. 4) Leading the world in development and mass production. Since start of production in 1982 (first in the wold), this component has established a solid reputation as a general purpose chip resistor. 5) ROHM resistors have approved ISO 91 certification. Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering it.!ratings Item Conditions Specifications Rated power Power must be derated according to the power derating curve in Figure 1 when ambient exceeds 7 C W (1 / 8W) at 7 C POWER LOAD (%) 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= P R E: Rated voltage (V) P: Rated power (W) R: Nominal resistance (Ω) Limiting element voltage Max. overload voltage 15V 2V Nominal resistance See Table 1. Operating 55 C C

2 Jumper type Table 1 Resistance Rated current Operating 2A 55 C to +155 C Resistance tolerance F (±1%) Resistance range (Ω) Resistance coefficient (ppm/ C).1 R <.15 (E24) 4±2.15 R < 1 (E24) ±25 1 R 2.2M (E24,96) ±1 J (±5%).1 R <.15 (E24) 4±2.15 R < 1 (E24) ±25 R < 2.2 (E24) 5± R < 1 (E24) ±5 1 R 1M (E24) ±2!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 Resistance Guaranteed value Item Test conditions (JIS C 521-1) Resistor type Jumper type Variation of resistance with J : ±5% F : ±1% See Table.1 Overload ± (%+.1Ω) JIS C JIS C Measurement : 55 / +25 / +125 C JIS C Rated voltage (current), 2s. Maximum overload voltage : 2V Solderability Resistance to soldering heat Rapid change of Damp heat, steady state Endurance at 7 C Endurance Resistance to solvent Bend strength of the end face plating ± (%+5Ω) No remarkable abnormality on the appearance. ± (%+5Ω) ± (%+.1Ω) ± (%+.1Ω) ± (%+.1Ω) ± (%+5Ω) A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. ± (%+5Ω) Without mechanical damage such as breaks. JIS C Rosin Ethanol (25%WT) Soldering condition : 235±5 C Duration of immersion : ±s. JIS C Soldering condition : 26±5 C Duration of immersion : 1±1s. JIS C Test temp. : 55 C~+125 C 5cyc JIS C C, 93%RH Test time : 1,h~1,48h JIS C Rated voltage (current), 7 C h : ON h : OFF Test time : 1,h~1,48h JIS C C Test time : 1,h~1,48h JIS C ±5 C, Immersion cleaning, 5±min. Solvent : 2-propanol JIS C

3 !External dimensions (Units : mm) 1.4± No. Material.4±.2 ±.1 5 5± Resistive element (Oxide metal thick film) Silver palladium thick film electrode Nickel electrode 4 Sn/Pb or Sn electrode 5 Alumina substrate 1.25±.1 6 Overcoating (glass) 6!Packaging Reel Taping P P2 P1 φd E F W B A B D A Thick paper mount Heat crimp cover/tape (Underside paper tape) Chip resistor Square punchout hole T2 C Label A B C D φ18 3 φ φ13±.2 EIAJ ET-72A compliant Bulk case φ W F E A B 8.±.3 3.5±5 1.75± D P P1 P2 T2 ±.1 ±.1 ±5 Max. 1.1 Shutter Slider 12± EIAJ ET-721A compliant 11±.7

4 !Part designation Part No. 3-digit or 4-digit IEC coding system Nominal resistance Packaging / Processing specifications Resistance tolerance Special part number Part No. Code EZH PZHI Packaging Paper tape Bulk case Standard ordering Unit(pcs) 5, 1, F ±1% J ±5% Specify "J" for jumper also. 1Ω or more (F class) Blank 1Ω or more (J class) Up to1ω (F class) L Up to1ω (J class)!dimensions JIS C JIS C JIS C LENGTH (mm) WIDTH (mm) THICKNESS (mm) Fig.2 Dimensions (length) Fig.3 Dimensions (width) Fig.4 Dimensions (thickness)!electrical characteristics DC RESISTANCE (%) JIS C C 65%RH TEMPERATURE COEFFICIENT (ppm/ C) JIS C C / 55 C 25 C / 125 C JIS C RATED VOLTAGE TIMES : 2s MAXIMUM OVERLOAD VOLTAGE : 2V Fig.5 Resistance Fig.6 Variation resistance with Fig.7 Overload

5 JIS C SOLDERING CONDITION : 26 C 1s JIS C C / 125 C 5cyc JIS C C 93%RH WITH NO LOAD 1,h k 1k 1k1M 1M k 1k 1k1M 1M Fig.8 Resistance to soldering heat Fig.9 Rapid change of Fig.1 Damp heat, steady state JIS C C 1,h OVERLOAD : THE RATED VOLTAGE JIS C C WITH NO LOAD 1,h JIS C IPA, 5min. Fig.11 Endurance at 7 C Fig.12 Endurance Fig.13 Resistance to solvents JIS C ENDURANCE WITH 9mm WIDTH Fig.14 Bend strength of the end face plating