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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 Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70˚C.
100 80 60 40 20 0
Specifications 0.1W (1 / 10W) / element at 70˚C
POWER LOAD (%)
– 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. E : Rated voltage (V) E= P×R Nominal total resistance range Total resistance tolerance Resistance variation Effective rotation angle Operating temperature Reactive variable range P : Rated power (W) R : Nominal resistance (Ω) 100 ∼ 1MΩ ±25% B (linear) characteristics 250±20˚ −55˚C ∼ +125˚C Rotational angle, both ends within 10% (R>150Ω) within 20% (R≤150Ω)
(recommended resistance value : E3 series) (applicable resistance value : E3 series)
Max. operating voltage : 50V
•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 DC total resistance Contact resistance rate Resistance change characteristics Residual resistance Wiper noise Specifications Within ±25% 3% or less B group OB R<1kΩ 200Ω or less R≥1kΩ Within 2% of total nominal resistance 5% or less of total nominal resistance, within the effective rotational range JIS C 5261 5.1 JIS C 5261 5.9 JIS C 5261 5.1 Voltage method JIS C 5261 5.1 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
Test method (JIS C 5261)
Rx
Is
• Measurement waveform
Vn
Resistance temperature characteristics Resistance to dry heat Temperature cycling
±250ppm / ˚C Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate: 8% or less Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate: 8% or less
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 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. JIS C 5261 7.4 60˚C , 95%RH Test time: 1,000 ∼ 1,048 hrs. 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
Resistance to humidity Total resistance change rate : ± (5.0%+0.1Ω) (steady state) Constriction contact resistance rate: 8% or less Endurance (under load in damp environment) Endurance (steady state) Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate: 8% or less
Total resistance change rate : ± (5.0%+0.1Ω) Constriction contact resistance rate : 8% or less
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
MVR32
Resistors
Characteristics Terminal strength (compression) Specifications Total resistance change rate : ± (3.0%+0.1Ω) There must be no mechanical damage. Test method (JIS C 5261) 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) Resistance to soldering heat Solderability
Total resistance change rate : ± (3.0%+0.1Ω) There must be no mechanical damage. Total resistance change rate: ± (3.0%+0.1Ω) Constriction contact resistance rate: 5% or less 95% of terminal surface must be covered by new soldering, and there must be no soldering corrosion.
JIS C 5261 6.5 Duration of pressure : 5±1s Amount of bending : 3 mm 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 Solde r: H63A Soldering conditions : 235±5˚C Soldering time : 2.0±0.5s.
!External dimensions (Units : mm)
T2 A F B P J
Part
Substrate
Q
Material
Alumina substrate (96% alumina or greater) oxide dielectric glaze Stainless steel + metal plating Stainless steel (Internal) Primary electrode with thick film of palladium-silver (External) Soldering tip Organic film
Dielectric glaze Eyelet Wiper
C
G
I
D
H N
Electrode Electrode
O O E T3 M K L
Protective film
T1
(Units : mm) A 3.0±0.1 J B 1.5±0.1 K C 1.5±0.1 L 0.7±0.1 D 1.6±0.1 M 0.18±0.05 E 1.0±0.15 N 0.9±0.1 F 2.6±0.1 O G P H Q I 0.5±0.05 Max. 3.6 1.9±0.05
Max. 1.3 1.15±0.1
0.35±0.1 Max. 0.65 Max. 1.1
!Equivalent circuit
T1
T3 T: terminal
T2
MVR32
Resistors
!Packaging
Reel Taping
φD0 E F
02 04 06 08 08 06 04
T
φD1 B
A
B
D
02
W
A
P1
P2
P0
K
C Label EIAJ ET-7001 compliant
(Units : mm) A φ180 0 −3 B φ60 +1 0 C 9±0.3 D φ13±0.3
A 3.3±0.2 P0 4.0±0.1 B 3.8±0.2 φD0 1.5 + 0.1 0 W 8.0±0.2 T Max. 0.6 F 3.5±0.05 K Max. 2.5 E 1.75±0.1 φD1 Min. 1.0 P1
(Units : mm)
P2 2.0±0.05 4.0±0.1
!Product designation
Part No.
Packaging / Processing specifications
Resistance tolerance
Standard ordering unit(pcs)
Nominal resistance
3-digit IEC coding system
Code
Part No.
Processing specifications
Packaging specifications Packaging style Taping Embossed tape with reel
N
±25%
HXBR MVR22 / 32 / 34 Reflow soldering
2000
MVR32
Resistors
!Recommended screwdriver for adjusting MVR resistors
Model Open, type 3 MVR Dimensions, configuration Manual adjustment
1.8 0.3 0.4 R1.2
R4.0
Automatic adjustment
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 Zirconia
Main body material ABS resin
AD1804
1.8×0.4
Sold in units of 20. Protective cap included.
(Units : mm) [AD1804]
0.4
1.1
15 4.5 80
φ10
MVR32
Resistors
!Dimensions (Units : mm)
JIS C 5261 4.3 SAMPLE SIZE : n = 10pcs MICROMETER 3.2 2.8 1.7 3.6 2.00 0.60 1.4
DIMENSION (mm)
3.1
2.7
1.6
3.4
1.95
0.55
1.3 GUARANTEED VALUE A F 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
3.0
2.6
1.5
3.2
1.90
0.50
1.2
B G I H J J
2.9 A
2.5 F
1.4 B
3.0 G
1.85 H
0.45 I
1.1
A F B T2
J
I G
T1
H
T3
Fig.2 Dimensions
!Electrical characteristics
20.0 JIS C 5261 5.1 SAMPLE SIZE : n = 10pcs
CONTACT RESISTANCE (%)
8.0
JIS C 5261 5.1 SAMPLE SIZE : n = 10pcs
TOTAL RESISTANCE (%)
10.0
6.0
0
4.0
−10.0
2.0
−20.0
100
1k
10k
100k
1M
0
100
1k
10k
100k
1M
RESISTANCE (Ω)
RESISTANCE (Ω)
Fig.3 DC resistance : Total and contact
MVR32
Resistors
40.0 RESIDUAL RESISTANCE (%) RESIDUAL RESISTANCE (Ω) 8.0 JIS C 5261 5.1 SAMPLE SIZE : n = 10pcs
TEMPERATURE COEFFICENT RESISTANCE (pmm / ˚C)
400 300 200 100 0 −100 −200 −300 −400 100 1k 10k 100k 1M JIS C 5261 5.3 SAMPLE SIZE : n = 10pcs 25 / −55˚C 25 / 125˚C
30.0
6.0
20.0
4.0
10.0
2.0
0
100
0
100
1k
10k
100k
1M
RESISTANCE (Ω)
RESISTANCE (Ω)
RESISTANCE (Ω)
Fig.4 Residual resistance
Fig.5 Resistance temperature characteristics
TOTAL RESISTANCE CHANGE RATIO (%)
−5.0
CONTACT RESISTANCE (%)
0
8.0
JIS C 5261 7.8 SAMPLE SIZE : n = 10pcs After 20 turns
6.0
−10.0
4.0
−15.0
JIS C 5261 7.8 SAMPLE SIZE : n = 10pcs After 20 turns
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
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
1k
10k 100k RESISTANCE (Ω)
1M
100
1k
10k 100k RESISTANCE (Ω)
1M
Fig.6-1 Endurance (wiper)
Fig.6-2 Endurance (wiper)
ROTATIONAL TORQUE (mN • m)
JIS C 5261 6.2 SAMPLE SIZE n = 10pcs
TOTAL RESISTANCE CHANGE RATIO (%)
20
4.0 3.0 2.0 1.0 0 −1.0 −2.0 −3.0 −4.0 100 1k 10k 100k 1M JIS C 5261 6.7 SAMPLE SIZE : n = 10pcs 260 °C 10S
8.0
CONTACT RESISTANCE (%)
6.0
JIS C 5261 6.7 SAMPLE SIZE : n = 10pcs INITIAL AFTER 260 °C 10S
10
4.0
2.0
0
1
5
10 CYCLE
20
0
100
1k
10k
100k
1M
RESISTANCE (Ω)
RESISTANCE (Ω)
Fig.7 Rotational torque
Fig.8 Resistance to soldering heat
MVR32
Resistors
TOTAL RESISTANCE CHANGE RATIO (%)
TOTAL RESISTANCE CHANGE RATIO (%)
10.0 JIS C 5261 7.2 SAMPLE SIZE : n = 10pcs 125˚C 1,000h 5.0
8.0
CONTACT RESISTANCE (%)
6.0
JIS C 5261 7.2 SAMPLE SIZE : n = 10pcs INITIAL AFTER 125˚C 1,000h
10.0 JIS C 5261 7.3 SAMPLE SIZE : n = 10pcs −55 / 125˚C 100cyc 5.0
0
4.0
0
−5.0
2.0
−5.0
−10.0
100
1k
10k
100k
1M
0
100
1k
10k
100k
1M
−10.0
100
1k
10k
100k
