3318F/K

PL
IA
NT
Features
Model 3318 is obsolete.
Models 3306F & 3306K are
preferred.
CO
M
■ Single-Turn / Carbon / Commercial
*R
oH
S
Open Frame
■ Cross slot rotor design suitable for
■ Adjustable front/back, top/bottom
automatic adjustment equipment
■ Board retention feature
■ RoHS compliant*
■ Enclosed cover
■ For trimmer applications/processing
guidelines, click here
■ PC board stand-offs
3318 - 6 mm Square Trimpot® Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
............................... 100 to 1 megohm
(see standard resistance table)
Resistance Tolerance .................. ±30 %
(tighter tolerances available)
Contact Resistance Variation ...10 % max.
Resolution ................................... Infinite
Adjustment Angle .................210 ° ±20 °
Product Dimensions
3318F
3318K
FRONT VIEW
2
0.80 ± 0.10
(.031 ± .004)
3318 K - 1 - 103 __
1
1
2
Standard or Modified
Product Code
-1 = 30 % TR Tolerance (Standard)
-2 = 20 % TR Tolerance
3
0.80 ± 0.10
(.031 ± .004)
2.50
(.098)
2.50
(.098)
3
0.30
(.012)
1.20
(.047)
3.20
DIA.
(.126)
4.65
(.183)
3.20
DIA.
(.126)
6.35
(.250)
3.50 ± 0.50
(.138 ± .020)
4.50
(.177)
1.70
(.067)
0.40
(.016)
MOUNTING
SURFACE
1.85
(.073)
3.80
(.150)
2.00 ± 0.10
(.079 ± .004)
REAR VIEW
0.60
(.024)
2.00 ± 0.10
DIA.
(.079 ± .004)
4.65
(.183)
ADJUSTING
DIRECTION
Standard Resistance Table
Popular values listed in boldface. Others are
typically not stocked by distributors and are not
recommended for new designs.
MOUNTING
SURFACE
0.80 ± 0.10
(.031 ± .004)
DIA.
0.75
(.030)
Packaging Options
Blank = 500 pcs./bag (Standard)
A = Ammo Pack - 1000 pcs./box
Resistance
Code
101
201
501
102
202
502
103
203
503
104
204
504
105
1.70
(.067)
REAR VIEW
Resistance Code
Resistance
(Ohms)
100
200
500
1,000
2,000
5,000
10,000
20,000
50,000
100,000
200,000
500,000
1,000,000
0.75
(.030)
0.75
(.030)
8.00
(.315)
1.20
(.047)
0.75
(.030)
Style
3.20
(.126)
3.50
(.138)
E
T
E
L
O
S
B
O
Physical Characteristics
Torque (Operating) ............. 20-250 g-cm
Stop Strength
Knob Side ........................... 750 g-cm
Reverse Side ...................... 350 g-cm
Terminals .......................Solderable pins
Marking......Resistance code, date code
Standard Packaging ....500 pcs. per bag
Adjustment Tool..............................H-90
Aqueous cleaning not recommended.
Model
6.40
(.252)
0.80 ± 0.10
(.031 ± .004)
Environmental Characteristics
Power Rating
100-500K ohms ...........................50 V
>500K ohms .................................25 V
50 °C ...................................... 0.1 watt
Temperature Range ... -25 °C to +100 °C
Temperature Coefficient... ±1000 ppm/°C
Load Life.. 1,000 hours 0.1 watt @ 70 °C
(20 % ΔTR)
How To Order
FRONT VIEW
6.40
(.252)
SUGGESTED PWB LAYOUT
0.60
(.024)
1.00 + 0.10 DIA.
(.039 ± .004)
DIA. 2.00 + 0.10
(.079 ± .004)
5.00
(.197)
SUGGESTED PWB LAYOUT
2.50
(.098)
5.00
(.197)
1.00 + 0.10
DIA.
(.039 + .004) 3 PLACES
5.00
(.197)
2
CCW
3
1
CLOCKWISE
DIMENSIONS:
0.25
TOLERANCES: ±
(.010)
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
MM
(INCHES)
EXCEPT WHERE NOTED
WIPER
CW
3318 - 6 mm Square Trimpot® Trimming Potentiometer
Packaging Specifications
Ammo Pack Model 3318K
Recommended PCB Layout
6.8
(.268)
2.05
(.081)
12.7 ± 1.0
(.500 ± .039)
6.4
(.252)
1.3 +.10/-0
(.051 +.004/-0)
DIA.
2.5 ± .05
(.099 ± .002)
0.8 ± 0.1
(.031 ±.004)
5.0 ± .05
1.0 +.10/-0
(.040 +.004/-0) (.197 ± .002)
DIA. 2 PLCS.
MOUNTING
SURFACE
2.5 ± .35
(.098 ± .014)
4.5
(.833)
0.8 ± 0.1
(.031 ±.004)
18.0 +1.0/-0.5
2.2
(.709 +040/-.020)
(.087)
6.0 ± 0.5
0.5 +0.1/-0
(.236 ± .020)
(.020 +.004/-0)
2
8.0
(.315)
E
T
E
L
O
S
B
O
1
3.85 ± .07
(.152 ± .003)
3
5.0 ± 0.8
(.197 ± .003)
Adhesive tape
20.0 ± 0.5
(.787 ± .020)
9.0 ± 0.5
(.354 ± .020)
4.0 ± 0.3
(.157 ± .012)
DIA.
6.35 ± 1.3
(.250 ± .051)
Ammo Pack Model 3318F
6.4
(.252)
3.2
(.126)
Recommended PCB Layout
6.35 ± 0.3
(.250 ± .012)
1
0.8 ± 0.1
(.031 ± .004)
3
3.0 ± 0.5
(.118 ± .020)
20.0 ± 0.5
(.787 ± .020)
3.0 ± 0.3
(.118 ± .012)
2.5
(.098)
DIA.
1.0 +.10/-0
(.040 +.004/-0)
DIA. 2 PLCS.
0.5
(.020)
11.0
(.433)
1.3 +.10/-0
(.051 +.004/-0)
3.0 ± 0.5
(.118 ± .020)
1.7
(.067)
MOUNTING
SURFACE
3.5
(.138)
DIA.
12.7 ± 1.0
(.500 ± .039)
3.2
(.126)
DIA.
2
12.7 ± 0.3
(.500 ± .012)
5.0 ± .05
(.197 ± .002)
18.0 +1.0/-0.5
(.709 +040/-.020)
3.85 ± .07
(.152 ± .003)
5.0 ± 0.8
(.197 ± .003)
6.0 ± 0.5
(.236 ± .020)
Adhesive tape
0.8 ± 0.1
(.031 ± .004)
0.85
2 PLCS.
(.033)
9.0 ± 0.5
(.354 ± .020)
4.0 ± 0.3
(.157 ± .012)
DIA.
2
CCW
WIPER
3
1
CLOCKWISE
CW
DIMENSIONS:
MM
(INCHES)
6.35 ± 1.3
(.250 ± .051)
12.7 ± 0.3
(.500 ± .012)
REV. 10/10
“Trimpot” is a registered trademark of Bourns, Inc.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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