Chip resistor networks

Transcription

1 Chip resistor networks (8 4 size)!features ) Convex electrodes Easy to check the fillet after soldering is finished. 2) Small, light, rectangular 4-chip network Area ratio is % smaller than that of MNR34, while weight ratio has been cut 7%. 3) High-density mounting Can be mounted even more densely than four 8 chips (MCR3), and mounting costs are lower. 4) Compatible with a wide range of mounting equipment. Squared corners make it excellent for mounting using image recognition machines. ) ROHM resistors have approved ISO-9 certification. Design and specifications are subject to change without notice. Carefully check the specification sheet supplied with the product before using or ordering it.!ratings Item Conditions Specifications Rated power Power must be derated according to the power derating curve in.3w ( / W) Figure when ambient exceeds 7 C. at 7 C POWER LOAD (%) AMBIENT TEMPERATURE ( C) Fig. 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) Limiting element voltage V Nominal resistance Operating See Table. C +2 C

2 Jumper type Rated current Operating Max. mω A C +2 C Table tolerance range (Ω) coefficient (ppm / C) J (±%) 2.2 R (E) ± R M (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 Item Guaranteed value Resistor type Jumper type Test conditions (JIS C 2-) J : ±% Max. mω JIS C 2-4. Variation of resistance with See Table. Overload ± (2.%+.Ω) Max. mω JIS C Measurement : / +2 / +2 C JIS C Rated voltage (current) 2., 2s. Limiting Element Voltage 2 : V Solderability to soldering heat Rapid change of Damp heat, steady state Endurance at 7 C Endurance to solvent Bend strength of the end face plating ± (.%+.Ω) Max. mω No remarkable abnormality on the appearance. ± (.%+.Ω) ± (3.%+.Ω) ± (3.%+.Ω) ± (3.%+.Ω) ± (.%+.Ω) A new uniform coating of minimum of 9% of the surface being immersed and no soldering damage. Max. mω Max. mω Max. mω Max. mω Max. mω ± (.%+.Ω) Max. mω Without mechanical damage such as breaks. JIS C Rosin Ethanol (2%WT) Soldering condition : 23± C Duration of immersion : 2.±.s. JIS C Soldering condition : 2± C Duration of immersion : ±s. JIS C Test temp. : C~+2 C cyc JIS C C, 93%RH Test time :,h~,48h JIS C Rated voltage (current), 7 C.h : ON.h : OFF Test time :,h~,48h JIS C C Test time :,h~,48h JIS C ± C, Immersion cleaning, ±.min. Solvent : 2-propanol JIS C

3 !External dimensions (Units : mm) Marking a 3.2±. b B a :.±. b :.4±. Material A A'.±..3±.2.2±. 2 3 Thick dielectric glaze of ruthenium (only silver used for jumper) Thick film of silver for primary electrode Nickel-coated secondary electrode B'.± External electrode coated with Sn/Pb or Sn Alumina substrate Overcoating Cross section A-A' Cross section B-B' Marking may change to the one-character type. Pitch of the upper electrode.!equivalent circuit R R2 R3 R4 R=R2=R3=R4!Packaging Reel Taping P2 P P φd E F W A B D B A C Label A B C D φ8 3 φ EIAJ ET-72A compliant (Units: mm) φ3±.2 W 8.±.3 D φ. +. Thick paper mount Heat crimp cover / Tape (Underside paper tape) F 3.±. P 4.±. E.7±. P 4.±. Chip network resistors A.8±. P2 2.±. Square punchout hole T2 (Units: mm) B 3.4±. T2 Max..

4 !Product designation Part No. Packaging / Processing specifications Circuit configuration code tolerance Nominal resistance Code Part No. Packaging Package style AB MNR4 / 2 / 4 / 32 / 34 J ±% 3-digit IEC coding system E MNR2 / 4 Taping Paper tape with reel (,)!Electrical characteristics DC RESISTANCE (%) JIS C 2-4. SAMPLE SIZE : n=4pcs 2 C %RH k k k M TEMPERATURE COEFICIENT (ppm / C) JIS C SAMPLE SIZE : n=2pcs 2 C / C 2 C / 2 C k k k M JIS C SAMPLE SIZE : n=2pcs RATED VOLTAGE 2.TIMES 2s LIMITING ELEMENT VOLTAGE 2 : V k k k M Fig.2 Fig.3 Variation resistance with Fig.4 Overload JIS C SAMPLE SIZE : n=2pcs SOLDERING CONDITION : 2 C S JIS C SAMPLE SIZE : n=2pcs C / 2 C cyc JIS C SAMPLE SIZE : n=2pcs 4 C 93%RH WITH NO LOAD,h k k k M 3. k k k M. k k k M Fig. to soldering heat Fig. Rapid change of Fig.7 Damp heat, steady state

5 JIS C SAMPLE SIZE : n=2pcs 7 C,h OVERLOAD : THE RATED VOLTAGE JIS C SAMPLE SIZE : n=2pcs 2 C WITH NO LOAD,h JIS C SAMPLE SIZE : n=2pcs IPA, min.. k k k M. k k k M 2. k k k M Fig.8 Endurance at 7 C Fig.9 Endurance Fig. to solvents