MVR32 Resistors Chip trimmer potentiometers MVR32 !Features 1) Superb solderability thanks to extra soldering electrode. 2) Close match between wiper and resistive element reduces wiper noise. 3) Mounting can be automated by using a carrier tape. 4) Extremely thin dimensions and light weight facilitate miniaturization of equipment. 5) Two-digit markings used to indicate resistance. 6) Special screwdriver (AD1804) available separately. 7) 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 Specifications Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70˚C. 0.1W (1 / 10W) / element at 70˚C POWER LOAD (%) 100 80 60 40 20 0 – 55 0 70 100 125 AMBIENT TEMPERATURE ( ˚C) Fig.1 Rated voltage The voltage rating is calculated by the following equation. If the value obtained exceeds the maximum operating voltage, the voltage rating is equal to the maximum operating voltage. Max. operating voltage : 50V E : Rated voltage (V) E= P×R P : Rated power (W) R : Nominal resistance (Ω) Nominal total resistance range 100 ∼ 1MΩ Total resistance tolerance ±25% (recommended resistance value : E3 series) (applicable resistance value : E3 series) Resistance variation B (linear) characteristics Effective rotation angle 250±20˚ Operating temperature Reactive variable range within 10% (R>150Ω) within 20% (R≤150Ω) −55˚C ∼ +125˚C Rotational angle, both ends •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. •The remainder of flux may negatively affect product performance and reliability. So please make sure to wash and remove flux completely washing. MVR32 Resistors !Characteristics Characteristics Specifications Test method (JIS C 5261) Within ±25% JIS C 5261 5.1 Contact resistance rate 3% or less JIS C 5261 5.9 Resistance change characteristics B group OB JIS C 5261 5.1 Voltage method DC total resistance Residual resistance R<1kΩ 200Ω or less R≥1kΩ Within 2% of total nominal resistance JIS C 5261 5.1 Wiper noise 5% or less of total nominal resistance, within the effective rotational range JIS C 5261 5.8 B method Rotational speed of approx. 10 cycles per minute (with one cycle defined as one round trip) • Measurement circuit Oscilloscope Rx Is • Measurement waveform Vn Resistance temperature characteristics ±250ppm / ˚C Provided that the constant current has been set according to the following: 10 Is : Is = Rx (When Rx ≤ 1kΩ, constant current is defined as Is = 10mA) Rx : Nominal resistance of semi-fixed test resistor. Vn : Noise voltage Vn × 100 (%) Noise rate = Is × Rx JIS C 5261 5.3 +25 / −55 / +25 / +125˚C Resistance to dry heat Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate: 8% or less JIS C 5261 7.2 125˚C Test time : 1,000 ∼ 1,048 hrs. Temperature cycling Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate: 8% or less JIS C 5261 7.3 Test temperature: −55˚C ∼ + 125˚C 100cyc. Resistance to humidity Total resistance change rate : ± (5.0%+0.1Ω) (steady state) Constriction contact resistance rate: 8% or less JIS C 5261 7.4 60˚C , 95%RH Test time: 1,000 ∼ 1,048 hrs. Endurance (under load in damp environment) Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate: 8% or less JIS C 5261 7.6 Rated voltage (current) , 60˚C , 95%RH 1.5h : ON −0.5h : OFF Test time: 1,000 ∼ 1,048 hrs. Endurance (steady state) Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate : 8% or less JIS C 5261 7.7 Rated voltage (current) , 70˚C 1.5h : ON −0.5h : OFF Test time: 1,000 ∼ 1,048 hrs. Rotational torque Endurance (wiper) 1.9 ∼ 19.7mN • m (20 ∼ 200gf • cm) Total resistance change rate : Within ±15% Constriction contact resistance rate : 8% or less JIS C 5261 6.2 JIS C 5261 7.8 After 20 rotations MVR32 Resistors Specifications Characteristics Test method (JIS C 5261) Terminal strength (compression) Total resistance change rate : ± (3.0%+0.1Ω) There must be no mechanical damage. JIS C 5261 6.5 Force (4.9N) is applied from three directions upon the middle of the sides of the sample on the surface being tested, as shown in the illustration on the left. Terminal strength (bending) Total resistance change rate : ± (3.0%+0.1Ω) There must be no mechanical damage. JIS C 5261 6.5 Duration of pressure : 5±1s Amount of bending : 3 mm Resistance to soldering heat Total resistance change rate: ± (3.0%+0.1Ω) Constriction contact resistance rate: 5% or less JIS C 5261 6.7 Soldering conditions : 260±5˚C Soldering time : 10±1s. Solderability 95% of terminal surface must be covered by new soldering, and there must be no soldering corrosion. JIS C 5261 6.8 Flux : Rosin methanol or rosin isopropyl alcohol Solde r: H63A Soldering conditions : 235±5˚C Soldering time : 2.0±0.5s. !External dimensions (Units : mm) T2 A J Material Part F P B Q C Substrate Alumina substrate (96% alumina or greater) Dielectric glaze oxide dielectric glaze Eyelet Stainless steel + metal plating Wiper Stainless steel Electrode (Internal) Primary electrode with thick film of palladium-silver Electrode (External) Soldering tip Protective film Organic film I G H D N O O M T3 E K L T1 (Units : mm) A B C D E F 3.0±0.1 1.5±0.1 1.5±0.1 1.6±0.1 1.0±0.15 2.6±0.1 J K Max. 1.3 1.15±0.1 L M N 0.7±0.1 0.18±0.05 0.9±0.1 !Equivalent circuit T1 T3 T2 T: terminal O G H Max. 3.6 1.9±0.05 P Q 0.35±0.1 Max. 0.65 Max. 1.1 I 0.5±0.05 MVR32 Resistors !Packaging Reel Taping φD0 T E φD1 02 04 06 08 06 D 04 B 02 A 08 F W B A P1 P2 P0 K C Label EIAJ ET-7001 compliant (Units : mm) (Units : mm) A φ180 B 0 −3 φ60 C +1 0 9±0.3 D φ13±0.3 A B W F E P1 P2 3.3±0.2 3.8±0.2 8.0±0.2 3.5±0.05 1.75±0.1 4.0±0.1 2.0±0.05 P0 φD0 T K φD1 4.0±0.1 1.5 + 0.1 0 Max. 0.6 Max. 2.5 Min. 1.0 !Product designation Part No. Resistance tolerance Packaging / Processing specifications Code Part No. Processing specifications HXBR MVR22 / 32 / 34 Reflow soldering Packaging specifications Packaging style Taping Embossed tape with reel Standard ordering unit(pcs) 2000 N ±25% Nominal resistance 3-digit IEC coding system MVR32 Resistors !Recommended screwdriver for adjusting MVR resistors Model Open, type 3 MVR Dimensions, configuration Manual adjustment Automatic adjustment 1.8 0.3 0.4 R1.2 R4.0 φ2 Commercially sold product [Maker] AD1804 [Rohm] (see note) No.9000 (−) 1.8×30 [Vessel] − Note : Screwdriver specified by ROHM for adjustment of MVR chips (MVR32). Product name Tip size Tip material Main body material AD1804 1.8×0.4 Zirconia ABS resin Sold in units of 20. Protective cap included. (Units : mm) φ10 [AD1804] 1.1 0.4 15 4.5 80 MVR32 Resistors !Dimensions (Units : mm) JIS C 5261 4.3 SAMPLE SIZE : n = 10pcs DIMENSION (mm) MICROMETER 3.2 2.8 1.7 3.6 2.00 0.60 1.4 3.1 2.7 1.6 3.4 1.95 0.55 1.3 GUARANTEED VALUE 1.5 2.6 3.0 1.4 2.5 2.9 3.2 A F 1.90 3.0 G I J B T2 I G H T1 T3 Fig.2 Dimensions !Electrical characteristics 10.0 0 −10.0 −20.0 8.0 JIS C 5261 5.1 SAMPLE SIZE : n = 10pcs CONTACT RESISTANCE (%) TOTAL RESISTANCE (%) 20.0 100 1k 10k 100k RESISTANCE (Ω) 1M JIS C 5261 5.1 SAMPLE SIZE : n = 10pcs 6.0 4.0 2.0 0 100 1k 10k 100k RESISTANCE (Ω) Fig.3 DC resistance : Total and contact 1.1 0.45 H A F 1.2 0.50 1.85 B 1M A F B G I H J J 3.0±0.1 2.6±0.1 1.5±0.1 Max. 3.6 0.5±0.05 1.9±0.05 Max. 1.3 MVR32 Resistors 8.0 30.0 20.0 10.0 0 6.0 4.0 2.0 0 100 400 JIS C 5261 5.1 SAMPLE SIZE : n = 10pcs TEMPERATURE COEFFICENT RESISTANCE (pmm / ˚C) RESIDUAL RESISTANCE (%) RESIDUAL RESISTANCE (Ω) 40.0 100 1k RESISTANCE (Ω) 10k 100k 200 100 0 −100 −200 −300 −400 1M CONTACT RESISTANCE (%) JIS C 5261 7.8 SAMPLE SIZE : n = 10pcs After 20 turns 10k 100k RESISTANCE (Ω) 4.0 2.0 5 10 15 20 turns 5 10 15 20 turns 5 10 15 20 turns 5 10 15 20 turns 5 10 15 20 turns 100 1M Fig.6-1 Endurance (wiper) 0 1 5 10 CYCLE Fig.7 Rotational torque 20 1k 10k 100k RESISTANCE (Ω) 1M Fig.6-2 Endurance (wiper) TOTAL RESISTANCE CHANGE RATIO (%) ROTATIONAL TORQUE (mN • m) 10 1M 6.0 5 10 15 20 turns 5 10 15 20 turns 5 10 15 20 turns 5 10 15 20 turns 5 10 15 20 turns JIS C 5261 6.2 SAMPLE SIZE n = 10pcs 100k JIS C 5261 7.8 SAMPLE SIZE : n = 10pcs After 20 turns 8.0 4.0 8.0 JIS C 5261 6.7 SAMPLE SIZE : n = 10pcs 260 °C 10S 3.0 2.0 1.0 0 −1.0 −2.0 CONTACT RESISTANCE (%) TOTAL RESISTANCE CHANGE RATIO (%) −10.0 1k 10k Fig.5 Resistance temperature characteristics −5.0 −15.0 1k RESISTANCE (Ω) 0 20 100 RESISTANCE (Ω) Fig.4 Residual resistance 100 JIS C 5261 5.3 SAMPLE SIZE : n = 10pcs 25 / −55˚C 25 / 125˚C 300 JIS C 5261 6.7 SAMPLE SIZE : n = 10pcs INITIAL AFTER 260 °C 10S 6.0 4.0 2.0 −3.0 −4.0 100 1k 10k 100k RESISTANCE (Ω) 1M 0 100 1k 10k 100k RESISTANCE (Ω) Fig.8 Resistance to soldering heat 1M MVR32 JIS C 5261 7.2 SAMPLE SIZE : n = 10pcs 125˚C 1,000h 5.0 0 −5.0 −10.0 100 1k 10k 100k 6.0 4.0 2.0 0 1M JIS C 5261 7.2 SAMPLE SIZE : n = 10pcs INITIAL AFTER 125˚C 1,000h 100 RESISTANCE (Ω) 1k 10k 100k TOTAL RESISTANCE CHANGE RATIO (%) 8.0 10.0 CONTACT RESISTANCE (%) TOTAL RESISTANCE CHANGE RATIO (%) Resistors 1M 10.0 JIS C 5261 7.3 SAMPLE SIZE : n = 10pcs −55 / 125˚C 100cyc 5.0 0 −5.0 −10.0 4.0 2.0 0 100 1k 10k 100k 1M 8.0 10.0 JIS C 5261 7.4 SAMPLE SIZE : n = 10pcs 85˚C 85%RH 1,000h 5.0 0 −5.0 −10.0 100 1k RESISTANCE (Ω) 0 −5.0 −10.0 100 1k 10k 100k RESISTANCE (Ω) 10k 100k 6.0 4.0 2.0 0 1M 100 1k 10k 100k 1M RESISTANCE (Ω) 1M 8.0 CONTACT RESISTANCE (%) TOTAL RESISTANCE CHANGE RATIO (%) JIS C 5261 7.6 SAMPLE SIZE : n = 10pcs 60˚C 95%RH 1,000h RATED LOAD 5.0 1M Fig.11 Resistance to humidity (steady state) Fig.10-2 Temperature cycling 10.0 100k JIS C 5261 7.4 SAMPLE SIZE : n = 10pcs INITIAL AFTER 85˚C 85%RH 1,000h RESISTANCE (Ω) JIS C 5261 7.6 SAMPLE SIZE : n = 10pcs INITIAL AFTER 60˚C 95%RH 1,000h RATED LOAD 6.0 4.0 2.0 0 100 1k 10k 100k RESISTANCE (Ω) Fig.12 Endurance (Under load in damp environmoent) 1M TOTAL RESISTANCE CHANGE RATIO (%) 6.0 10k Fig.10-1 Temperature cycling CONTACT RESISTANCE (%) TOTAL RESISTANCE CHANGE RATIO (%) CONTACT RESISTANCE (%) JIS C 5261 7.3 SAMPLE SIZE : n = 10pcs INITIAL AFTER −55 / 125˚C 100cyc 1k RESISTANCE (Ω) Fig.9 Resistance to dry heat 8.0 100 RESISTANCE (Ω) 10.0 JIS C 5261 7.7 SAMPLE SIZE : n = 10pcs 70˚C 1,000h RATED LOAD 5.0 0 −5.0 −10.0 100 1k 10k 100k 1M RESISTANCE (Ω) Fig.13-1 Endurance (rated load) MVR32 Resistors 9.0 JIS C 5261 7.7 SAMPLE SIZE : n = 10pcs INITIAL AFTER 70˚C 1,000h RATED LOAD 6.0 4.0 JIS C 5261 5.8 SAMPLE SIZE : n = 10pcs 8.0 SLIDER NOISE (%) CONTACT RESISTANCE (%) 8.0 7.0 6.0 5.0 4.0 3.0 2.0 2.0 0 100 1k 10k 100k 1M RESISTANCE (Ω) Fig.13-2 Endurance (rated load) 1.0 100 1k 10k 100k RESISTANCE (Ω) Fig.14 Wiper noise 1M