4.0
s
Fetures
1. Available for flow and reflow soldering method
while maintaining unique sealed construction.
2. Simple construction by 3 piece parts achieve high
reliability.
3. Available for cleaning after soldering.
4. Plated termination achieve a high resistance to
solder leaching.
5. High grade version is available (PVM4AxxxB01).
2.7±0.1
#2
1.5 Dia.
3.8 Dia.
2.0±0.2
0.7
#1
1.7
0.6
#3
0.55±0.1
0.35±0.1 Depth
(2.4)
4.7
0.75
1.5 0.8
#2
#1
CLOCKWISE
(0.3)
2.4
0.85
1.8
0.85
s
Applications
1. FDDs
3. Measuring equipments
5. Professional use cameras
2. HDDs
4. Encorders
(
Toleran
Part Number
PVM4A101A01
PVM4A201A01
PVM4A301A01
PVM4A501A01
PVM4A102A01
PVM4A202A01
PVM4A302A01
PVM4A502A01
PVM4A103A01
PVM4A203A01
PVM4A303A01
PVM4A503A01
PVM4A104A01
PVM4A204A01
PVM4A304A01
PVM4A504A01
PVM4A105A01
PVM4A205A01
PVM4A101B01
PVM4A201B01
PVM4A301B01
PVM4A501B01
PVM4A102B01
PVM4A202B01
PVM4A302B01
PVM4A502B01
PVM4A103B01
PVM4A203B01
PVM4A303B01
PVM4A503B01
PVM4A104B01
PVM4A204B01
PVM4A304B01
PVM4A504B01
PVM4A105B01
Power Rating
(W)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.1(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
0.25(70°C)
Soldering Method
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Flow/Reflow
Number of Turns
(Effective Rotation Angle)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
1(240°±10°)
Total Resistance Value
100ohm
±25%
200ohm
±25%
300ohm
±25%
500ohm
±25%
1k ohm
±25%
2k ohm
±25%
3k ohm
±25%
5k ohm
±25%
10k ohm
±25%
20k ohm
±25%
30k ohm
±25%
50k ohm
±25%
100k ohm
±25%
200k ohm
±25%
300k ohm
±25%
500k ohm
±25%
1M ohm
±25%
2M ohm
±25%
100ohm
±20%
200ohm
±20%
300ohm
±20%
500ohm
±20%
1k ohm
±20%
2k ohm
±20%
3k ohm
±20%
5k ohm
±20%
10k ohm
±20%
20k ohm
±20%
30k ohm
±20%
50k ohm
±20%
100k ohm
±20%
200k ohm
±20%
300k ohm
±20%
500k ohm
±20%
1M ohm
±20%
TCR
(ppm/°C
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±250
±150
±100
±100
±100
±100
±100
±100
±100
±100
±100
±100
±100
±150
±150
±150
±150
±150
Continued on the following pa
s
Construction
s
Standard Land Dimension
1.7
1.8
1.2
3.2
3.2
Driver Plate
#2 Terminal
Wiper
Rubber
#1 Terminal
Ceramic
Substrate
Resistive
Element
#3 Terminal
1.1
1.6
1.1
(
Toleranc
s
Characteristics
Item
Humidity Exposure
High Temperature Exposure
Humidity Load Life
PVM4ApppA01
Res. Change :
±3%
Res. Change :
±3%
Res. Change :
±3%
Res. Change :
±3%
Res. Change :
±3%
Res. Change :
±10%
(20 cycles)
PVM4ApppB01
Res. Change :
±2%
Res. Change :
±2%
Res. Change :
±3%
Res. Change :
±3%
Res. Change :
±2%
Res. Change :
±5%
(100 cycles)
5
Temperature Load Life
Temperature Cycle
Rotational Life
30
1. Store that the temperature is -10 to +40deg. C and
the relative humidity is 30-85%RH.
2. Do not store in or near corrosive gases.
3. Use within six months after delivery.
4. Open the package just before using.
5. Do not store under direct sunlight.
6. The trimmer potentiometer should not be used under
the following environmental conditions:
If you use the trimmer potentiometer in an
environment other these listed below, please
consult with Murata factory representative prior to
using.
(1) Corrosive gaseous atmosphere.
(Ex. Chlorine gas, Hydrogen sulfide gas, Ammonia
gas, Sulfuric acid gas, Nitric oxie gas, etc.)
(2) In liquid.
(Ex. Oil, Medical liquid, Organic solvent, etc.)
(3) Dusty/dirty atmosphere.
(4) Direct sunlight.
(5) Static voltage nor electric/magnetic fields.
(6) Direct sea breeze.
(7) Other variations of the above.
s
Notice (Rating)
1. When using with partial load (rheostat), minimize
the power depend on the resistance value.
2. The maximum input voltage to a trimmer
potentiometer should not exceed (P•R)^1/2 or the
maximum operating voltage, whichever is smaller.
3. The maximum input current to a trimmer
potentiometer should not exceed (P/R)^1/2 or the
allowable wiper current, whichever is smaller.
s
Notice (Soldering and Mounting)
1. Soldering
(1) Can be soldered by reflow soldering method, flow
soldering method, and soldering iron. (Incase
of flow soldering, it is necessary to clean
after soldering.)
(2) Use our standard land dimension. Excessive land
area causes displacement due to effect of the
surface tension of the solder. Insufficient
land area leads to insufficient soldering
strength of the chip.
(3) Standard soldering condition
(a) Reflow and flow soldering :
Refer to the standard temperature profile.
(b) Soldering iron:
>Temperature of tip 260deg.C max.
>Soldering time
3sec. max.
>Diameter
2mm dia. max.
>Wattage of iron
30W max.
Before using other soldering conditions than
those listed above, please consult with Murata
factory representative prior to using. If the
soldering conditions are not suitable, e. g.,
excessive time and/or excessive temperature,
the trimmer potentiometer may deviate from the
specified characteristics.
(4) Apply the appropriate amount of solder paste.
The thickness of solder paste should be printed
from 100micro m to 150micro m and the dimension
of land pattern should be used Murata's
standard land pattern at reflow soldering.
Insufficient amounts of solder can lead to
insufficient soldering strength on PCB.
Excessive amounts of solder may cause the
bridging between the terminals.
(5) The soldering iron should not come in contact
with the case of the trimmer potentiometer. If
such contact does occur, the trimmer
potentiometer may be damaged.
2. Mounting
(1) Do not apply excessive force (preferable 9.8N
(Ref.; 1kgf) max.), when the trimmer
potentiometer is mounted to the PCB.
(2) Do not warp and/or bend PC board to prevent
trimmer potentiometer from breakage.
(3) In chip placers, the recommended size of the
cylindrical pick-up nozzle should be outer
dimension 4.0mm dia. and inner dimension 2.0mm
dia..
3. Cleaning
(1) Isopropyl alcohol and Ethyl alcohol are
available material for cleaning.
For other materials, please consult with Murata
factory representative prior to using.
(2) The total cleaning time by cold dipping method
shall be less than 5 minutes.
The total cleaning time by hot dipping method
shall be less than 2 minutes.
The total cleaning time by ultrasonic washing
(conditions as below) method shall be less than
1 minutes.
Continued on the following pa
and ultrasonic washing, the cleaning time by hot
dipping shall be less than 1 minutes and the
cleaning time by ultrasonic washing shall be
less than 1 minutes. In case of the mixed
conditions with hot dipping, ultrasonic washing
and vaper, the cleaning time by hot dipping
shall be less than 1 minutes, the cleaning time
by ultrasonic washing shall be less than 30
seconds and the cleaning time by vaper shall be
less than 30 seconds.
If the trimmer potentiometer is cleaned by
be damaged. Due to the ultra-sonic cleaning
equipment peculiar self resonance point and the
cleaning compatibility usually depends on the
jig construction and/or the cleaning condition
such as the depth of immersion, please check
the cleaning equipment to determine the
suitable conditions.
If the trimmer potentiometer is cleaned by
other conditions, the trimmer potentiometer may
be damaged.
s
Flow Soldering Standard Profile
For flow soldering
s
Reflow Soldering Standard Profile
For reflow soldering
Pre-heating(in the air)
250
Temperature (°C)
200
Soldering
Gradual Cooling
(in the air)
Temperature (°C)
Pre-heating(in the air)
230
200
Soldering
Gradual Cooling
(in the air)
100
100
5
0
0
60~120 sec.
5 sec. max.
Time
60~120 sec.
30 sec. max.
(Melting zone)
Time
s
Notice (Handling)
1. Use suitable screwdrivers that fit comfortably in
driver slot. We recommend the below screwdriver.
* Recommended screwdriver for manual adjustment
VESSEL MFG.: NO. 9000-2.6x30
(Murata P/N : KMDR120)
We can supply above screwdrivers.
If you place order, please nominate Murata P/N.
2. Don't apply more than 4.9N (Ref.; 500gf) of twist
and stress after mounted onto PCB to prevent
contact intermittence. If excessive force is
applied, the trimmer potentiometer may not
function.
3. Please use within the effective rotational angle.
The potentiometer dose not have a mechanical stop
for over rotation. In case out of effective
rotational angle, the trimmer potentiometer may
not function.
4. When using a lock paint to fix slot position,
please use adhesive resin without chlorine or
sulfur (Three-bond "1401series").
s
Notice (Other)
1. Please make sure that your product has been
evaluated and confirmed against your
specifications when our product is mounted to your
product.
2. Murata connot guarantee trimmer potentiometer
integrity when used under conditions other than
those specified in this document.
32
atmospheric pressure unless otherwise specified. In case when entertained a doubt in judgment obtained from results measured in accordance with the
above mentioned conditions, the tests and measurements shall be conducted under the condition of 25±2°C of temperature and, 45 to 55% of relative
humidity and 86 to 106 kpa of atmospheric pressure.
No.
Item
Test Methods
Measure total resistance between the resistance element and terminals (terminals #1 and #3) with the contact
positioned against a stop. The positioning of the contact arm and terminal shall be the same for subsequent tot
resistance measurements on the same device.
Use the test voltage specified in Table-1 for total resistance measurements. This voltage shall be used whenev
subsequent total resistance measurement is made.
1
Total Resistance
Total resistance,
Nominal (ohm)
10VRV100
100FRV1k
1kFRV10k
10kFRV100k
100kFR
Maximum Test
Voltage (V)
1.0
3.0
10.0
30.0
100.0
Table-1 Total resistance test voltage
2
Residual Resistanc
Position the contact arm at the extreme counterclockwise limit of mechanical travel and measure the resistance
between the contact arm and the corresponding end terminal. Then, position the contact arm at the extreme clo
wise limit of mechanical travel and measure the resistance between the contact arm and the corresponding end
minal. During this test, take suitable precautions to ensure that the rated current of the resistance element is no
exceeded.
Contact resistance variation shall be measured with the measuring circuit shown in below, or its equivalent. The
operating wiper shall be rotated in both directions through 90% of the actual effective-electrical travel for a total
cycles.
The rate of rotation of the operating wiper shall be such that the wiper completes 1 countin determining whethe
not a contact resistance variation is observed at least twice in the same location. The test current shall follow th
value given in Table-2 unless otherwise limited by the power rating.
3
Contact Resistance
Standard total
resistance R (ohm)
100VRF10k
10kVRF100k
100VR
Test Current
10mA Max.
1mA Max.
100µA Max.
Constant Current
Source not to
Exceed Rating of
Unit Being Tested
1
Rx
2
Proofreaded
Resistence
AC
Amplifier
3
Oscillosco
Table-2 Test current for CRV
Rx : Trimmer Potentiometer
Oscilloscope bandwidth :100Hz to 50kHz
Figure-1 CRV measuring circuit
4
Humidity Exposure
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the po
tiometer shall be placed in a chamber at 40±2°C and 90 - 95% without loading for 500±12 hours.
The resistance value shall be measured after keeping the potentiometer in a room for 5±1/6 hours.
5
High Temperature
Exposure
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the po
tiometer shall be placed in a chamber at 70±2°C without loading for 500±12 hours. The resistance value shall b
measured after keeping the potentiometer in a room for 1.5±1/6 hours.
6
Humidity Load Life
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the po
tiometer shall be placed in a chamber at 40±2°C and 90 - 95% with loading the 1/2 rated voltage between #1 a
terminals, intermittently 1.5 hours ON and 0.5 hours OFF for 1000±12hours.
The resistance value shall be measured after keeping the potentiometer in a room for 5±1/6 hours.
7
Load Life
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the po
tiometer shall be placed in a chamber at 70±2°C (50±2°C for PVZ) with loading the 1/2 rated voltage between #
and #2 terminals, intermittently 1.5 hours ON and 0.5 hours OFF for 1000±12 hours. The resistance value shal
measured after keeping the potentiometer in a room for 1.5±1/6 hours.
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the po
tiometer shall be subjected to Table-3,Table-4 temperature for 5 cycles. The resistance value shall be measure
after keeping the potentiometer in a room for 1.5±10 minutes.
8
Temperature Cycle
Sequence
Temp. (°C)
Time (min.)
2
1
3
4
-25±3 +25±2 +85±3 +25±2
30±3 10Max. 30±3 10Max.
Table-3 PVZ
Sequence
Temp. (°C)
Time (min.)
2
1
3
4
-55±3 +25±2 +125±3 +25±2
30±3 10Max. 30±3 10Max.
Table-4 PVA3/PVS3/PVM4A---A01
9
Continued on the following pa
70
1
嵌入式系统
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