3.18
(.125 )
31.75
(1.25)
25.4
(1.000)
1.47 ± .56
(.058 ± .022)
2.36
(.093)
MTG. HOLES (2)
LEADS MIN. LENGTH
6.10
(.240)
6.10
(.240)
4.83
(.190)
8.00 ± .38
(.315 ± .015)
2.67
(.105 )
3.43 ± .38
(.135 ± .015)
17.78
(.700)
22.86
(.900)
6.60
(.260)
2
1 3
12.70 ± .79
(.500 ± .031)
2
1 3
3.80
(.150)
2.54
(.100)
17.78
(.700)
7.62
(.300)
6.35
(.250)
DIA.
TYP.
TYP.
152.4
(6.000)
ADJ. SLOT
2.92 ± .38
(.115 ± .015)
.64
(.025)
.79
(.031)
WIDE
X
X
DEEP
DIA.
.71 ± .03
(.028 ± .001)
DIA. TYP.
.71 ± .03
(.028 ± .001)
DIA. TYP.
Features
■ 1-1/4 ” Rectangular / Multiturn
Wirewound / Industrial / Sealed
■ Panel mount option available
■ Listed on the QPL for style RT12 per
MIL-PRF-27208
■ RoHS compliant*
■ For trimmer applications/processing
guidelines, click here
3057 - Trimpot
®
Trimming Potentiometer
*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.
Specifi cations 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 specifi c applications.
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 Coeffi cient ..... ±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
Product Dimensions
How To Order
3057 L - 1 - 103 M
Model
Style
Standard or Modifi ed
Product Indicator
-1 = Standard Product
Resistance Code
Optional Suffi x Letter
M = Panel Mount
(Factory Installed)
Standard Resistance Table
Nominal
Resistance Resistance Resolution
(Ohms) Code (Percent)
10 100 2.40
20 200 1.90
50 500 1.40
100 101 1.00
200 201 0.86
500 501 0.89
1,000 102 0.72
2,000 202 0.58
5,000 502 0.43
10,000 103 0.34
20,000 203 0.31
50,000 503 0.24
REV. 04/14
TOLERANCES: ±
0.25
EXCEPT WHERE NOTED
(.010)
DIMENSIONS:
MM
(INCHES)
Popular values listed in boldface. Special
resistances available.
3057L
Common Dimensions
3057J
3057P
3057Y
7.62
(.300)
17.78
(.700)
6.35
(.250)
2
3
12.70 ± .79
(.500 ± .031)
1
2.54
(.100)
2.54
(.100)
.71 ± .03
(.028 ± .001)
DIA. TYP.
1
3
GREEN
CW
CLOCKWISE
YELLOW
CCW
2
WIPERRED
*RoHS COMPLIANT
