3 TURNS CERMET TRIMMERS
TM-7
INTERNAL STRUCTURE
1
2
!0
9
RoHS compliant
8
3
4
5
6
7
Part name
Material
Zinc alloy, Nickel-plated
Silicone rubber
Flammability
■
FEATURES
O
RoHS compliant
O
Fine setting is possible
O
Extremely small backlash (In house comparison)
1
2
3
4
5
6
7
8
9
!0
Shaft
Rubber cushion
Wiper
Base element
Adhesive
Terminal pin
Resistive element
Electrode
Rotor gear
Housing
—
Multi metal alloy
Ceramic
Epoxy
Copper, Tin-plated
RuO
2
cermet
Ag-Pd cermet
Polyamide
Polybutyleneterephthalate
UL94HB
UL94V-0
—
UL94V-0
■
PART NUMBER DESIGNATION
T M - 7 E P 5 0 k
Ω
( 5 0 3 )
Series name
Terminal pin
E：Sn (Lead-free)
Resistance code
Resistance value
Product shape
P
：
Top adjustment
W
：
Top adjustment
S
：
Side adjustment
X
：
Side adjustment
※
Please refer to the LIST OF PART NUMBERS when placing orders.
TM-7
CERMET TRIMMERS
■
LIST OF PART NUMBERS
Form of packaging
Adjustment
position
Shape of terminal
(Top view)
Plastic bag
Top adjustment
2
1
3
<Nominal resistance values>
50
Ω
100
Ω
50 kΩ
200
Ω
100 kΩ
500
Ω
200 kΩ
1 kΩ
500 kΩ
2 kΩ
1 MΩ
5 kΩ
2 MΩ
10 kΩ
Pieces in
package
20 kΩ
Fig. 1
※
The above part numbers are all available as the standard item respectively
with the combination of <Nominal resistance values> (Fig. 1).
※
Verify the above part numbers when placing orders.
50 pcs./pack
TM-7EP
TM-7EW
TM-7ES
TM-7EX
2
1
3
2
Side adjustment
(
↑
Adjustment
direction)
1
3
3
2
1
■
ELECTRICAL CHARACTERISTICS
Nominal resistance range
Resistance tolerance
Power ratings
Resistance law
Maximum input voltage
Maximum wiper current
Effective electrical turn
End resistance
C.R.V.
Operating temp. range
Temp. coefficient
Insulation resistance
Dielectric strength
Net weight
50
Ω
~ 2 MΩ
±
10 %
0.5 W (70 °C) 0 W (120 °C)
（B）
Linear law
■
MECHANICAL CHARACTERISTICS
Mechanical turn
Operating torque
Mechanical stop
Rotational life
Terminal strength
Thrust to shaft
3 turns
20 mN·m {204 gf·cm} maximum
Clutch action
200 cycles
ΔR/R
≦
±
(2
Ω +
3 %)
10 N {1.02 kgf} minimum
（
Tensile strength
）
10 N {1.02 kgf} minimum
245
±
3 °C, 2 ~ 3 s
DC300 V or power rating, whichever is smaller
Solderability
100 mA or power rating, whichever is smaller
2.5 turns
1 % or 2
Ω,
whichever is greater
1 % or 3
Ω,
whichever is greater
−
55 ~ 120 °C
±
100 10
-6
/°C maximum
1000 MΩ minimum (DC500 V)
Load life
{ }
：
Reference only
■
ENVIRONMENTAL CHARACTERISTICS
Test item
Thermal shock
Humidity
Shock
Vibration
Test conditions
−65
~ 125 °C (0.5 h), 5 cycles
−10
~ 65 °C (80 ~ 98 %),
10 cycles, 240 h
981 m/s
2
, 6 ms
6 directions for 3 times each
(Amplitude) 1.52 mm or
(Acceleration) 196 m/s
2
,
10 ~ 2000 Hz, 3 directions, 12 times each
Specifications
[ΔR/R
≦
1 %]
[S.S.
≦
1 %]
[ΔR/R
≦
2 %]
[ΔR/R
≦
1 %]
[S.S.
≦
1 %]
[ΔR/R
≦
3 %]
[S.S.
≦
1 %]
[ΔR/R
≦
2 %]
[S.S.
≦
2 %]
[ΔR/R
≦
3 %]
[S.S.
≦
2 %]
No leaks (No continuous bubbles)
70 °C, 0.5 W, 1000 h
−55
°C, 2 h
120 °C, 250 h
85 °C, 60 s
Flow
260 ± 3 °C, 5 ~ 6 s, two times maximum
Manual soldering
380 ± 10 °C, 3 ~ 4 s
AC900 V, 60 s
Low temp. operation
Approx. 0.50 g (TM-7EP, EW)
Approx. 0.69 g (TM-7ES, EX)
High temp. exposure
Immersion seal
Soldering heat
[ΔR/R
≦
1 %]
Δ
R/R：Change in total resistance
S.S.
：Setting
stability
TM-7
CERMET TRIMMERS
■
MAXIMUM INPUT RATINGS
Nominal resistance values (Ω)
Resistance code
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
Maximum input voltage (V)
5.00
7.07
10.0
15.8
22.4
31.6
50.0
70.7
100
158
224
300
300
300
300
Maximum wiper current (mA)
50
100
200
500
1k
2k
5k
10 k
20 k
50 k
100 k
200 k
500 k
1M
2M
100
70.7
50.0
31.6
22.4
15.8
10.0
7.07
5.00
3.16
2.24
1.50
0.60
0.30
0.15
■
OUTLINE DIMENSIONS
O
TM-7EP
Top adjustment
6.9
72
Unless otherwise specified, tolerance:
±
0.3 (Unit: mm)
1
2.5 2.5
2
3
CW rotation
φ
2.5, Slot 0.6 W
×
0.7 D
1.5
Lead-free Identification mark
0.3
2
2.5
3
1
3 –
φ
0.45
6.9
72
1.8
1.8
2
1.3
0.3
3
0.6
3 –
φ
0.45
1
Resistance code & Production date code
O
TM-7EW
Top adjustment
Lead-free Identification mark
φ
2.5, Slot 0.6 W
×
0.7 D
1.5
φ
7.2
+0.4
–0.1
φ
7.2
+0.4
–0.1
Resistance code & Production date code
★
Pin pitch in W type is
different from P type.
O
TM-7ES
Side adjustment
φ
2.5, Slot 0.6 W
×
0.7 D
Resistance code & Production date code
7.2
+0.4
–0.1
0.3
1
Lead-free Identification mark
6.2
8.4
2.5
6.52
2
3 –
φ
0.45
2.5
3
0.8
2.5
8.2
+0.4
–0.1
TM-7
CERMET TRIMMERS
■
OUTLINE DIMENSIONS
O
TM-7EX
Side adjustment
Resistance code & Production date code
Unless otherwise specified, tolerance:
±
0.3 (Unit: mm)
1
7.2
+0.4
–0.1
0.3
3
CW rotation
φ
2.5, Slot 0.6 W
×
0.7 D
2
8.2
+0.4
–0.1
8.4
2
2.5
Lead-free Identification mark
3.2
2.5
3
2.5
92
3 –
φ
0.45
1
★
Pin position & shaft position of X type are different from S type.
■
PACKAGING SPECIFICATIONS
<Bulk pack specifications>
O
Unit of bulk in a plastic bag is 50 pcs. per pack.
O
Boxing of bulk in a plastic bag is performed with 200
pcs. per box.
0.8
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