Features
nꢀ 1-1/4ꢀ˝ꢀRectangularꢀ/ꢀMultiturnꢀ
nꢀ Forꢀtrimmerꢀapplications/processingꢀꢀ
ꢀ guidelines,ꢀclickꢀhere
ꢀ
Wirewoundꢀ/ꢀIndustrialꢀ/ꢀSealed
nꢀ Panelꢀmountꢀoptionꢀavailable
nꢀ ListedꢀonꢀtheꢀQPLꢀforꢀstyleꢀRT12ꢀperꢀꢀ
ꢀ
MIL-PRF-27208
nꢀ RoHSꢀcompliant*
3057 - Trimpot® Trimming Potentiometer
Electrical Characteristics
Product Dimensions
Std. Resistance Range ...... 10 to 50K ohms
(see standard resistance table)
3057L
Common Dimensions
3057Y
Resistance Tolerance .................±5 % std.
(tighter tolerance available)
Absolute Minimum Resistance
31.75
(1.25)
ꢀꢀ3.18
ꢀꢀ(.125ꢀ)
25.4
..............................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.
(1.000)
1
2
7.62
(.300)
3
1.47ꢀ ꢀ.56
(.058ꢀ ꢀ.022)
6.35
(.250)
17.78
ADJ.ꢀSLOT
ꢀꢀ2.92ꢀ ꢀ.38
(.115ꢀ ꢀ.015)
(.700)
DIA.
2.36
(.093)
ꢀMTG.ꢀHOLESꢀ(2)
DIA.
ꢀꢀ.64
Dielectric Strength
WIDE
(.025)
X
X
2.54
(.100)
Sea Level ................................ 1,500 vac
70,000 Feet................................ 400 vac
Adjustment Travel.................22 turns nom.
ꢀꢀ.79
DEEP
(.031)ꢀ
4.83
(.190)
.71ꢀ ꢀ.03
(.028ꢀ ꢀ.001)ꢀ
DIA.ꢀTYP.
12.70ꢀ ꢀ.79
(.500ꢀ ꢀ.031)
Environmental Characteristics
6.10
(.240)
TYP.
6.10
TYP.
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)
152.4
LEADSꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀMIN.ꢀLENGTH
(6.000)
(.240)ꢀ
8.00ꢀ ꢀ.38
(.315ꢀ ꢀ.015)
2.54
(.100)
RED
WIPER
2
2.67
(.105ꢀ)
GREEN
CW
YELLOW
CCW
3
1
3.43ꢀ ꢀ.38
(.135ꢀ ꢀ.015)
CLOCKWISE
3057J
ꢀ
MM
(INCHES)
DIMENSIONS:
ꢀ
3.80
ꢀ
0.25ꢀ ꢀꢀꢀꢀꢀꢀ
Shock ................... 100 G (1 % ΔTR; 0.5 %
+ resolution ΔVR)
TOLERANCES:ꢀ
EXCEPTꢀWHEREꢀNOTED
(.150)
ꢀ
(.010)
Load Life........1,000 hours 1 watt @ 70 °C
(2 % ΔTR)
Standard Resistance Table
2
1
3
Rotational Life ..........200 cycles (2 % ΔTR)
Moisture Sensitivity Level.....................N/A
ESD Classification (HBM).........................2
Nominal
Resistance
(Ohms)
10
Resistance
Code
100
Resolution
(Percent)
2.40
6.35
(.250)
7.62
(.300)
Physical Characteristics
20
200
1.90
1.40
17.78
(.700)
50
500
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
.71ꢀ ꢀ.03
DIA.ꢀTYP.
(.028ꢀ ꢀ.001)ꢀ
100
101
1.00
200
201
0.86
500
501
0.89
1,000
2,000
5,000
10,000
20,000
50,000
102
0.72
2.54
(.100)
202
0.58
502
0.43
103
0.34
3057P
203
0.31
.71ꢀ ꢀ.03
(.028ꢀ ꢀ.001)ꢀ
DIA.ꢀTYP.
503
0.24
number and style
Popular values listed in boldface. Special
resistances available.
Wiper ...................50 % (Actual TR) ±10 %
Flammability ..............................U.L. 94V-0
Standard Packaging
P&Y Style......................10 pcs. per tube
L&J Style......................100 pcs. per box
Adjustment Tool..................................H-90
2
1
3
17.78
(.700)
22.86
(.900)
6.60
12.70ꢀ ꢀ.79
How To Order
(.260) (.500ꢀ ꢀ.031)
3057 L - 1 - 103 M
Model
Style
Standard or Modified
Product Indicator
-1 = Standard Product
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*RoHSꢀDirectiveꢀ2015/863,ꢀMar.ꢀ31,ꢀ2015ꢀandꢀAnnexꢀ
“Trimpot”ꢀisꢀaꢀregisteredꢀtrademarkꢀofꢀBourns,ꢀInc.ꢀꢀꢀꢀꢀ†“Fluorinert”ꢀisꢀaꢀregisteredꢀtrademarkꢀofꢀ3MꢀCo.
ꢀSpecificationsꢀareꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Usersꢀshouldꢀverifyꢀactualꢀdeviceꢀperformanceꢀinꢀtheirꢀspecificꢀapplications.ꢀ
Theꢀproductsꢀdescribedꢀhereinꢀandꢀthisꢀdocumentꢀareꢀsubjectꢀtoꢀspecificꢀlegalꢀdisclaimersꢀasꢀsetꢀforthꢀonꢀtheꢀlastꢀpageꢀꢀ
ofꢀthisꢀdocument,ꢀandꢀatꢀwww.bourns.com/docs/legal/disclaimer.pdf.
Resistance Code
Optional Suffix Letter
M = Panel Mount
(Factory Installed)
REV.ꢀ08/19
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