M
PL
IA
N
Features
■
1-1/4 ” Rectangular / Multiturn
■
For trimmer applications/processing
T
Wirewound / Industrial / Sealed
■
Panel mount option available
■
Listed on the QPL
for style
RT12
per
MIL-PRF-27208
■
RoHS compliant*
*R
oH
S
CO
guidelines,
click here
3057 - Trimpot
®
Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
.................................. 10 to 50K ohms
(see standard resistance table)
Resistance Tolerance ............. ±5 % std.
(tighter tolerance available)
Absolute Minimum Resistance
.......................... 0.1 % or 1 ohm max.
(whichever is greater)
Noise .....................100 ohms ENR max.
Resolution ........... See Resistance Table
Insulation Resistance ............... 500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level............................. 1,500 vac
70,000 Feet ............................ 400 vac
Adjustment Travel .............22 turns nom.
Environmental Characteristics
Power Rating @ 70 °C .................. 1 watt
Power Rating @ 150 °C ................ 0 watt
Temperature Range ... -55 °C to +150 °C
Temperature Coefficient ..... ±50 ppm/°C
Seal Test ......................85 °C Fluorinert†
(pin styles only)
Humidity .......MIL-STD-202 Method 106
96 hours
2 %
ΔTR,
100 Megohms IR)
Vibration ............. 30 G (1 %
ΔTR;
0.5 %
+ resolution
ΔVR)
Shock ............... 100 G (1 %
ΔTR;
0.5 %
+ resolution
ΔVR)
Load Life.... 1,000 hours 1 watt @ 70 °C
(2 %
ΔTR)
Rotational Life ..... 200 cycles (2 %
ΔTR)
Physical Characteristics
Torque............................. 8.0 oz-in. max.
Mechanical Stops ................. Wiper idles
Terminals ........ Solderable pins and lugs
Flexible leads ......(7 strands of 30 AWG)
Weight ....................................... 0.10 oz.
Marking.........Manufacturer’s trademark,
resistance code, terminal numbers,
date code, manufacturer’s model
number and style
Wiper ............... 50 % (Actual TR) ±10 %
Flammability ..........................U.L. 94V-0
Standard Packaging
P&Y Style ..................10 pcs. per tube
L&J Style ....................25 pcs. per bag
Adjustment Tool..............................H-90
RED
YELLOW
CCW
Product Dimensions
3057L
Common Dimensions
31.75
(1.25)
25.4
(1.000)
3.18
(.125 )
1.47 ± .56
(.058 ± .022)
3057Y
1
2.36
DIA.
(.093)
MTG. HOLES (2)
4.83
(.190)
ADJ. SLOT
2.92 ± .38 DIA.
(.115 ± .015)
.64
WIDE
X
(.025)
.79
DEEP
X
(.031)
2
3
7.62
(.300)
17.78
(.700)
6.35
(.250)
2.54
(.100)
.71 ± .03 DIA. TYP.
(.028 ± .001)
6.10
TYP.
(.240)
152.4
LEADS
MIN. LENGTH
(6.000)
8.00 ± .38
(.315 ± .015)
6.10
TYP.
(.240)
12.70 ± .79
(.500 ± .031)
2.54
(.100)
Standard Resistance Table
2.67
(.105 )
3.43 ± .38
(.135 ± .015)
3057J
3.80
(.150)
1
2
3
7.62
(.300)
17.78
(.700)
6.35
(.250)
.71 ± .03 DIA. TYP.
(.028 ± .001)
Resistance
(Ohms)
10
20
50
100
200
500
1,000
2,000
5,000
10,000
20,000
50,000
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
503
Nominal
Resolution
(Percent)
2.40
1.90
1.40
1.00
0.86
0.89
0.72
0.58
0.43
0.34
0.31
0.24
Popular values listed in boldface. Special
resistances available.
2.54
(.100)
How To Order
3057 L - 1 - 103 M
Model
.71 ± .03
(.028 ± .001)
DIA. TYP.
3057P
Style
Standard or Modified
Product Indicator
-1 = Standard Product
Resistance Code
Optional Suffix Letter
M = Panel Mount
(Factory Installed)
2
1
17.78
(.700)
22.86
(.900)
3
6.60
(.260)
12.70 ± .79
(.500 ± .031)
DIMENSIONS:
MM
(INCHES)
EXCEPT WHERE NOTED
2
WIPER
TOLERANCES: ±
0.25
(.010)
REV. 04/14
1
CLOCKWISE
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
“Trimpot” is a registered trademark of Bourns, Inc.
†“Fluorinert” is a registered trademark of 3M Co.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
3
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