MVR34 resistors chip trimmer potentiometers MVR34 the MVR34 chip trimmer potentiometer is designed for use in automatic regulators. with its highly stable and reliable ruthenium oxide resistor on an alumina substrate, it offers outstanding dependability in a small, lightweight package. ! features 1) excellent for use in automatic regulators. 2) easy to set manually using a regular phillips screwdriver. 3) superb solder ability thanks to extra soldering electrode. 4) close match between wiper and dielectric reduces noise. 5) mounting can be automated by using a carrier tape. 6) two-digit markings used to indicate resistance. 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 conditions specifications 0.1w (1 / 10w) / element rated power rated voltage reactive variable rotational angle, both ends nominal total resistance range max. operating voltage: 50v 100~1m ? within 10% (r > 150 ? ) within 20% (r 150 ? ) operating temperature ? 55 c~ + 125 c effective rotation angle 220 20 resistance variation b (linear) characteristics total resistance tolerance 25% at 70 c 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. e: rated voltage (v) p: rated power (w) r: nominal resistance ( ? ) e = p r power must be derated according to the power derating curve in figure 1 when ambient temperature exceeds 70 c. (recommended resistance value: e3 series) (applicable resistance value: e6 series) 0 20 40 60 80 100 ? 55 0 70 100 125 ambient temperature ( c) power load (%) fig.1 ? ? ? ? before using components in circuits where they will be exposed to transients such as pulse loads (short-duration, high-level lo ads), 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 u sed 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 co mpletely washing.
MVR34 resistors ! ! ! ! characteristics characteristics test method (jis c 5261) specifications dc total resistance contact resistance rate resistance to dry heat temperature cycling resistance to humidity (steady state) wiper noise 5% or less of total nominal resistance, within the effective rotational range r < 1k ? 20 ? or less r 1k ? within 2% of total nominal resistance total resistance change rate: (5.0% + 0.1 ? ) constriction contact resistance rate: 8% or less total resistance change rate: (5.0% + 0.1 ? ) constriction contact resistance rate: 8% or less within 25% 3% or less resistance change characteristics resistance temperature characteristics b group ob 250ppm / c jis c 5261 5.1 jis c 5261 5.9 jis c 5261 5.8 b method rotational speed of approx. 10 cycles per minute (with one cycle defined as one round trip) ? measured circuit measured waveform provided that the constant current has been set according to the following: is: is = (when rx 1k ? , constant current is defined as is = 10ma) rx: nominal resistance of semi-fixed test resistor. vn: noise voltage noise rate = 100 (%) jis c 5261 7.2 125 c test time: 1,000~1,048 hrs. jis c 5261 7.3 test temperature: ? 55 c~ + 125 c 100cyc. total resistance change rate: (5.0% + 0.1 ? ) constriction contact resistance rate: 8% or less jis c 5261 7.4 60 c , 95%rh test time: 1,000~1,048 hrs. jis c 5261 5.3 + 25 / ? 55 / + 25 / + 125 c jis c 5261 5.1 voltage method residual resistance jis c 5261 5.1 vn rx is oscilloscope rx 10 is rx vn endurance (under load in damp environment) endurance (steady state) endurance (wiper) rotational torque total resistance change rate: (5.0% + 0.1 ? ) constriction contact resistance rate: 8% or less total resistance change rate: (5.0% + 0.1 ? ) constriction contact resistance rate: 8% or less 1.9~19.7mn m (20~200gf cm) total resistance change rate: within 15% 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. jis c 5261 7.7 rated voltage (current), 70 c 1.5h: on ? 0.5h: off test time: 1,000~1,048 hrs. jis c 5261 6.2 jis c 5261 7.8 after 20 rotations
MVR34 resistors characteristics test method (jis c 5261) specifications terminal strength (bending) resistance to soldering heat solderability terminal strength (compression) total resistance change rate: (3.0% + 0.1 ? ) there must be no mechanical damage. total resistance change rate: (3.0% + 0.1 ? ) constriction contact resistance rate: 5% or less 95% of terminal surface must be covered by new soldering, and there must be no soldering corrosion. total resistance change rate: (3.0% + 0.1 ? ) there must be no mechanical damage. jis c 5261 6.5 duration of pressure: 5 1s. amount of bending: 3mm jis c 5261 6.7 soldering conditions: 260 5 c soldering time: 10 1s. jis c 5261 6.8 flux: rosin methanol or rosin isopropyl alcohol solder: h63a soldering conditions: 235 5 c soldering time: 2.0 0.5s. 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. ! ! ! ! external dimensions (units: mm) substrate dielectric paste electrode #2 (t2) wiper electrodes #1,#3(t1,t3) protective film 96% alumina or greater. metal glaze composed mainly of ruo2. stainless steel + nickel plating + gold plating stainless steel ag / pd, pt thick film + extra soldering electrode organic film part material abcde ijklm 3.0 0.1 1.5 0.1 1.5 0.1 1.6 0.15 3.5 0.1 f n 3.0 0.1 g o 1.9 0.05 h p 0.5 0.05 1.7 0.1 0.6 0.1 0.7 0.1 1.0 0.15 0.9 0.2 0.75 0.2 0.8 0.2 1.0 0.2 (units : mm) a b c d t1 t3 e f g t2 h i j k l mn o p 1 2 3 3 4 5 1 2 4 5 6 6 ! ! ! ! equivalent circuit t: terminal t1 t3 t2
MVR34 resistors ! ! ! ! packaging label reel taping eiaj et-7001 compliant 0 2 0 4 0 6 0 8 0 2 0 4 0 6 0 8 c abd abcd 9 0.3 13 0.2 a 0 p 1 p 0 p 2 b 0 f w k e d 0 (units: mm) (units: mm) wf ea 0 b 0 d 0 p 0 p 1 p 2 k 8.0 0.2 3.5 0.05 1.75 0.1 3.3 0.2 3.8 0.2 4.0 0.1 4.0 0.1 2.0 0.05 2.2 0.3 180 0 ? 3 60 + 1 0 1.5 + 0.1 0 ! ! ! ! product designation code hxbr reflow soldering taping part no. processing specifications embossed tape with reel packaging style 2000 standard ordering unit(pcs) packaging specifications 3-digit iec coding system packaging / processing specifications resistance tolerance nominal resistance part no. n 25% mvr22/32/34 ! ! ! ! recommended screwdriver for adjusting mvr resistors model dimensions, configuration manual adjustment, automatic adjustment commercially sold product (maker) MVR34 open, type 3 no.9000 ( + ) ( + ) 0 30 [vessel ] [vessel ] no.205 no.0
MVR34 resistors ! ! ! ! dimensions (units : mm) 3.2 3.1 3.0 2.9 1.7 1.6 1.5 1.4 1.90 1.75 1.60 1.45 3.7 3.6 3.5 3.4 3.2 3.1 3.0 2.9 2.00 1.95 1.90 1.85 0.60 0.55 0.50 0.45 3.0 0.1 a 1.7 1.6 1.5 1.4 1.9 1.8 1.7 1.6 0.8 0.7 0.6 0.5 0.6 0.7 0.8 0.9 1.30 1.15 1.00 0.85 0.8 0.9 1.0 1.1 0.95 0.85 0.75 0.65 0.7 0.8 0.9 1.0 1.2 1.1 1.0 0.9 dimension (mm) 1.5 0.1 bc 1.6 0.15 d 3.5 0.1 e 3.0 0.1 f 1.9 0.05 g 0.5 0.05 h jis c 5261 4.3 1.7 0.1 i 0.6 0.1 j 0.7 0.1 k 1.0 0.15 l 0.9 0.1 m 0.75 0.1 n 0.8 0.1 o 1.0 0.1 p dimension (mm) 1.5 0.1 sample size : n = 10pcs micrometer fig.2 dimensions a b c d e f g h i j k l mn o p
MVR34 resistors ! ! ! ! electrical characteristics 20.0 10.0 0 100 1k 10k 100k 1m resistance ( ? ) total resistance (%) ? 20.0 ? 10.0 jis c 5261 5.1 sample size : n = 20pcs fig.3 dc resistance : total and contact resistance ( ? ) 100 1k 10k 100k 1m 0 2.0 4.0 6.0 8.0 contact resistance (%) jis c 5261 5.1 sample size : n = 20pcs fig.4 residual resistance 100 40.0 30.0 20.0 10.0 0 resistance ( ? ) 100 1k 10k 100k 1m 0 residual resistance (%) 1.0 2.0 3.0 4.0 jis c 5261 5.1 resistance ( ? ) residual resistance (%) sample size : n = 10pcs fig.5-1 endurance (wiper) 0 ? 5.0 ? 10.0 ? 15.0 total resistance change ratio (%) resistance ( ? ) 5 10 15 20cyc 5 10 15 20cyc 5 10 15 20cyc 5 10 15 20cyc 5 10 15 20cyc 100 1k 10k 100k 1m after 20 turns jis c 5261 7.8 sample size : n = 20pcs fig.5-2 endurance (wiper) resistance ( ? ) 100 1k 10k 100k 1m 8.0 6.0 4.0 2.0 jis c 5261 7.8 after 20 turns contact resistance (%) sample size : n = 20pcs 5 10 15 20cyc 5 10 15 20cyc 5 10 15 20cyc 5 10 15 20cyc 5 10 15 20cyc fig.6 rotational torque 20 15 10 5 0 1 5 10 15 20 cycle jis c 5261 6.2 rotational torque (mn m) sample size : n = 20pcs
MVR34 resistors fig.7 resistance to soldering heat 4.0 3.0 2.0 1.0 0 ? 1.0 ? 2.0 ? 3.0 ? 4.0 1k 10k 100k resistance ( ? ) jis c 5261 6.7 260 c 10s r1 - 2 resistance change ratio (%) sample size : n = 20pcs 4.0 3.0 2.0 1.0 0 ? 1.0 ? 2.0 ? 3.0 ? 4.0 1k 10k 100k resistance ( ? ) total resistance change ratio (%) jis c 5261 6.7 260 c 10s sample size : n = 20pcs after 1k 10k 100k resistance ( ? ) 0 2.0 4.0 6.0 8.0 contact resistance(%) jis c 5261 6.7 initial 260 c 10s sample size : n = 20pcs fig.8 resistance to dry heat 100 1k 10k 100k 1m resistance ( ? ) contact resistance (%) 0 2 4 6 8 after initial sample size : n = 20pcs jis c 5261 7.2 125 c 1,000h 10 5 0 ? 5 ? 10 resistance ( ? ) total resistance change (%) jis c 5261 7.2 sample size : n = 20pcs 125 c 1,000h 100 1k 10k 100k 1m 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 jis c 5261 7.2 sample size : n = 20pcs 125 c 1,000h r1 - 2 resistance change ratio (%) fig.9 temperature cycling 100 1k 10k 100k 1m resistance ( ? ) 0 2 4 6 8 after initial jis c 5261 7.3 sample size : n = 20pcs contact resistance (%) ? 55 c / 125 c 100cyc 100 1k 10k 100k 1m resistance ( ? ) total resistance change (%) ? 10 ? 5 0 5 10 jis c 5261 7.3 sample size : n = 20pcs ? 55 c / 125 c 100cyc 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 r1 - 2 resistance change ratio (%) jis c 5261 7.3 sample size : n = 20pcs ? 55 c / 125 c 100cyc
MVR34 resistors fig.10 resistance to humidity (steady state) 100 1k 10k 100k 1m resistance ( ? ) 0 2 4 6 8 after initial jis c 5261 7.4 sample size : n = 10pcs 85 c 85%rh 1,000h contact resistance (%) 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 jis c 5261 7.4 sample size : n = 10pcs 85 c 85%rh 1,000h total resistance change (%) 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 85 c 85%rh 1,000h jis c 5261 7.4 sample size : n = 10pcs r1 - 2 resistance change ratio (%) fig.11 endurance (under load in damp environment) 100 1k 10k 100k 1m resistance ( ? ) 0 2 4 6 8 after initial jis c 5261 7.6 sample size : n = 10pcs 60 c 95%rh 1,000h contact resistance (%) rated load 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 jis c 5261 7.6 sample size : n = 10pcs 60 c 95%rh 1,000h rated load total resistance change (%) 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 60 c 95%rh 1,000h rated load jis c 5261 7.6 sample size : n = 10pcs r1 - 2 resistance change ratio (%) fig.12 endurance (rated load) 100 1k 10k 100k 1m 0 2 4 6 8 after initial contact resistance (%) jis c 5261 7.7 sample size : n = 20pcs rated load resistance ( ? ) 70 c 1,000h 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 total resistance change (%) jis c 5261 7.7 sample size : n = 20pcs rated load 70 c 1,000h 100 1k 10k 100k 1m resistance ( ? ) ? 10 ? 5 0 5 10 jis c 5261 7.7 sample size : n = 20pcs 70 c 1,000h rated load r1 - 2 resistance change ratio (%)
MVR34 resistors fig.13 wiper noise slider noise (%) 100 1k 10k 100k 1m 9.0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 resistance ( ? ) jis c 5261 5.8 sample size : n = 10pcs
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