Contact Resistance Variation ...........................±1 % .................................................................±3 % of total resistance or 3 ohms
(whichever is greater)
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Total Resistance Shift ................................... ±10 % maximum ................................................ ±3 % maximum
Rotational Life (No Load) ................................... 100,000 cycles ................................................... 20,000 cycles
Total Resistance Shift ................................... ±15 % TRS maximum ....................................... ±5 % or 5 ohms TRS whichever is greater
Torque (Starting and Running)..................................................................................... A & B bushings 0.35 to 4.23 N-cm (0.05 to 6.0 oz.-in.)
C & E bushings 0.21 to 4.23 N-cm (0.3 to 6.0 oz.-in.)
3856 – 0.11 to 2.12 N-cm (0.15 to 3.0 oz.-in.)
Mounting (Torque on Bushing) ........................................................................................................... 1.7-2.0 N-m (15-18 lb.-in.) maximum
Weight (Single Section) ......................................................................................................................................................30 grams maximum
Terminals ................................................................................................................................................ Printed circuit terminals or solder lugs
Soldering Condition ............................................Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ˝ wire diameter.
Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean flux.
Part can be wave soldered at 260 °C (500 °F) for 5 seconds, no wash process with no clean flux.
Marking...........................................................................Manufacturer’s trademark, wiring diagram, resistance, date code, and part number
Ganging (Multiple Section Potentiometers) ..............................................................................................................................1 cup maximum
Hardware.................................................................................... One lockwasher and one mounting nut is shipped with each potentiometer;
locking bushing versions are shipped with one additional locking nut
specifications tested at 250 RPM, at room ambient: +25 °C nominal.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
3851/3852/3856 – 3/4 ˝ Diameter Panel Control
Product Dimensions
9.53
(.38)
.38
(.015)
12.7, 22.23
STD.
(1/2, 7/8)
3/8-32 UNEF
.25
45
°
X
(.010)
CHAMFER
6.35+.03/-.05
DIA.
(.250+.001/-.002)
SHAFT SLOT
1.19
.047 WIDE X
1.60+.38/.00
DEEP
(.063+.015/-.000)
6.35
±
.76
(.25
±
.03)
12.7
(.50)
.38
(.015)
15.88
STD.
(5/8)
3/8-32 UNEF
.25
45
°
X
(.010)
CHAMFER
6.35+.03/-.05
DIA.
(.250+.001/-.002)
SHAFT SLOT
1.19 WIDE X
(.047)
1.60+.38/-.00
(.063+.015/-.000)DEEP
6.35
±
.76
(.25
±
.03)
19.05
(.75)
DIA.
12.19
DIA.
(.480)
19.05
(.75)
DIA.
12.19
DIA.
(.48)
SOLDER LUG TERMINAL
6.35
2.79
(.25)
TYP.
(.110)
3 PLCS.
12.7
(.50)
EACH TERMINAL LUG
2
3
2 PLCS.
1
WILL ACCOMMODATE
.72
THREE
(.028)
DIAMETER
14.02
±
.25
(.724 DIA. AWG
(.552
±
.010)
STRANDED) WIRES.
STANDARD
PRINTED CIRCUIT TERMINAL
1.02
6.35
TYP.
TYP.
(.040)
(.25)
15.88
±
.38
(.625
±
.015)
16.00
5.49
OPTIONAL FLAT
(.63)
(.216)
1.52
28.58
LONG OR
FRONT BUSHING FOR SHAFTS UNDER
(.06)
(1-1/8)
1
2
3
6.35
(.25)
6.35
(.25)
9.53, 22.23
STD.
(3/8, 7/8)
.38
(.015)
2.36
(.094)
1/4-32 UNEF
.25
45
°
X (.010)
CHAMFER
6.35
±
.76
(.25
±
.03)
9.53
(.38)
.38
(.015)
12.7
STD.
(1/2)
1/4-32 UNEF
.25
45
°
X (.010)
CHAMFER
6.35
±
.76
(.25
±
.03)
SUGGESTED BOARD LAYOUT
6.35
6.35
(.25)
(.25)
1.40
DIA.
(.055)
19.05
(.75)
DIA.
12.19
DIA.
(.480)
19.05
(.75)
DIA.
3.18
±
0.25
DIA.
(.125
±
.001)
3.18
±
.025
DIA.
(.125
±
.001)
SHAFT SLOT
.79 WIDE X .76 DEEP
(.031)
(.03)
.25
OPTIONAL FLAT
LONG OR
(.010)
1.52
15.88
FRONT BUSHING FOR SHAFTS UNDER
(.06)
(5/8)
SHAFT SLOT
.79 WIDE X .76 DEEP
(.03)
(.031)
12.19
DIA.
(.480)
A, B & H BUSHINGS
9.53
(.375)
C & E BUSHINGS
9.53
(.375)
9.91
DIA.
(.390)
3.18
DIA.
(.125)
3.18
6.73
DIA.
(.125)DIA.
(.265)
9.53
(.38)
6.35
±
.76
(.25
±
.03)
12.7
(.50)
.38
(.015)
6.35+.03/-.05
DIA.
(.250+.001/-.002)
3/8-32 UNEF
1.19
(.047)
9.53
(.38)
6.35
±
.76
(.25
±
.03)
.38
(.015)
12.7
(.50)
6.35+.03/-.05
DIA.
(.250
±
.03)
3/8-32 UNEF.
.79
(.031)
SHAFT SLOT
ALIGNMENT
AT CCW
FLAT
ALIGNMENT
AT CCW
50
° ±
10
°
50
° ±
10
°
19.05
(.75)
DIA.
12.19
DIA.
(.480)
1.60+3.81/-.000
(.063+.015/-.000)
DIA.
22.23
STD.
(7/8)
19.05
(.75)
DIA.
12.19
DIA.
(.480)
.79
±
.25
(.031
±
.010)
22.23
STD.
(7/8)
3.18
±
.03
(.125
±
.003)
DIA.
.25
45
°
X (.010)
CHAMFER
2.67
±
.381
(.105
±
.015)
ANTI-ROTATION LUG
PROJECTS 1/16 INCH
ABOVE MOUNTING FACE.
TOLERANCES EXCEPT AS NOTED:
.127
.XX
±
.38
DECIMALS: .XXX
±
(.005),
(.015)
FRACTIONS:
±
1/64
ANGLE:
±
3 %
.25
45
°
X (.010)
CHAMFER
DIMENSIONS:
MM
(INCHES)
CCW
1
3
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
POTENTIOMETER
2
3851/3852/3856 – 3/4 ˝ Diameter Panel Control
Hardware
LOCKWASHER H-37-1
6.6
(.26)
NUT H-38-1
9.53 +0/-0.38
(.375 +0/-.015)
2.36 ± 0.25
(.093 ± .01)
LOCKNUT H-38-3
4.57 ± 0.05
(.180 ± .002)
7.75
(.305)
11 +0/-0.43
(.433 +0/-.017)
NUT H-38-2
2.36 ± 0.25
(.093 ± .01)
30 ° ± 5 °
1.02
(.040)
30 ° ± 5 °
TYP.
0.64
(.025)
15 ° ± 1 °
1/4-32 UNEF
1/4-32
NEF-20
12.07 ± 0.25
(.475 ± .01)
LOCKWASHER H-37-2
9.58 ± 0.36
(.377 ± .014)
0.64 ± 0.05
(.025 ± .002)
7.92
(.312)
3/8-32 NEF-2B
3.96
(.156)
12.52 ± 0.36
(.493 ± .014)
0.56 ± 0.05
(.022 ± .002)
14.66 +0/-0.43
(.577 +0/-.017)
30 ° ± 5 °
Date Code Description
YYWWM
M = COUNTRY OF MANUFACTURE
(MEXICO)
WW = WEEK NUMBER
YY = LAST TWO DIGITS OF YEAR
MANUFACTURED
DIMENSIONS:
MM
(INCHES)
LOCKNUT H-38-4
8.51 ± 0.05
(.335 ± .002)
1.91
MIN.
(.075)
18 ° ± 2 °
3/8-32
NEF-2B
1.02
(.040)
12.7
(.5)
1.14 ± 0.38
(.045 ± .015)
30 ° ± 5 ° TYP.
4.83
(.19)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
3851/3852/3856 – 3/4 ˝ Diameter Panel Control
How To Order
3852
A
-
28
2
-
103
A
L
12
16
16
20
28
28
SHAFT TYPE
(FMS) & DIAMETER
3/8 ” (9.53 mm) L X 1/8 ” (3.18 mm) D
1/2 ” (12.7 mm) L x 1/4 ” (6.35 mm) D
1/2 ” (12.7 mm) L x 1/8 ” (3.18 mm) D
5/8 ” (15.88 mm) L X 1/4 ” (6.35 mm) D
7/8 ” (22.20 mm) L X 1/4 ” (6.35 mm) D
7/8 ” (22.20 mm) L X 1/8 ” (3.18 mm) D
AVAILABLE ONLY IN
MODELS
3851, 3852
3851, 3852
3851, 3852
3851, 3852
3851, 3852
3856
3851, 3852
3856
BUSHINGS
C
A
C, E
A, B
A, B
A
C, E
H
Consult factory for lengths not shown.
A
B
C
E
H
BUSHING
Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L
Locking 3/8 ” (9.53 mm) D x 1/2 ” (12.7 mm) L
Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L
Locking 1/4 ” (6.35 mm) D x 1/2 ” (12.7 mm) L
Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L
APPLICABLE MODELS
3851, 3852, 3856
3851, 3852
3851, 3852
3851, 3852
3856 (3.18 mm D Shaft)
RESISTANCE
CODE/VALUE
(IN OHMS)
Model 3851
(102)
1K
(252)
2.5 K
(502)
5K
(103)
10 K
(253)
25 K
(503)
50 K
(104)
100 K
(254)
250 K
(504)
500 K
(105)
1M
Models 3852/3856
(101)
100
(251)
250
(501)
500
(102)
1K
(252)
2.5 K
(502)
5K
(103)
10 K
(253)
25 K
(503)
50 K
(104)
100 K
(254)
250 K
(504)
500 K
(105)
1M
ELEMENT
TAPER/TOLERANCE
A
Linear ±10 %
B
Linear ±20 %
C
Audio CW ±10 %
D
Audio CW ±20 %
E
Linear ±10 %
F
Audio CCW ±10 %
G
Audio CCW ±20 %
H
Linear ±5 %
RoHS IDENTIFIER
L
Compliant
MODEL
3851 3/4 ” (19.05 mm) D Single-Turn C.P.
3852 3/4 ” (19.05 mm) D Single-Turn Cermet
3856 3/4 ” (19.05 mm) D 3-3/4-Turn Cermet
TERMINAL STYLE AND
SHAFT TYPE
1
2
3
5
6
7
Solder Lugs, Plain End
Solder Lugs, Slotted End
Solder Lugs, Flatted Shaft
PC Pins, Plain End
PC Pins, Slotted End
PC Pins, Flatted Shaft
Boldface features are Bourns standard options.
All others are available with higher minimum order
quantities.
APPLICABLE
MODELS
3852, 3856
3851
3852, 3856
3851
3851
3852, 3856
3851
3852, 3856
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA:
Tel: +36 88 885 877 • Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
REV. 10/20
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
[size=4]Good morning~ We meet again~ It's time for our wonderful review~ Come and see what good things there are in the past week~ [b][color=#ff0000]Recommended wonderful posts:[/color][/b] [url=home....
I usually calculate based on two 10*20 vias passing 1A current.
But I don't understand why capacitors need to have so many holes in them to handle large currents?
How to estimate the number of ground ...
[i=s]This post was last edited by zhaojun_xf on 2015-3-17 12:11[/i] I think developers all like MAC, but I have always been worried about whether to use a virtual machine or dual system? Are there any...
[i=s]This post was last edited by Senbenzakura Dabai on 2020-11-11 14:17[/i]Phenomenon: After welding, the chip can be connected normally without a program at first. It is also normal without a system...
Hello everyone, I have been in our forum for a while, but this is my first time posting. I am a WINCE newbie, and the questions I ask are very elementary and naive. I hope you can help me. Sometimes, ...
The core of a machine vision system is image acquisition and processing. All information comes from images, and image quality is crucial to the entire vision system. A good image can improve the st...[Details]
The intelligent driving community has its own rhythm. Some are busy pushing new versions and focusing on R&D, others are busy with publicity and promotion, and still others are immersed in mass pro...[Details]
Wave soldering is a crucial electronic component soldering technique used in the production of a wide range of electronic devices, from home appliances to computers to avionics. The process is wide...[Details]
New energy vehicles are increasingly popular with consumers due to policies and energy conservation. Once you've purchased your vehicle, maintenance is essential. However, due to the different powe...[Details]
New energy pure electric vehicles generally accelerate faster than comparable fuel-powered vehicles, both from a standing start and while accelerating. Many believe this is simply due to the motor'...[Details]
On August 25th, SK Hynix announced that it has completed development and entered mass production of its 321-layer, 2Tb QLC NAND flash memory product. This achievement marks the world's first applic...[Details]
Amidst the wave of intelligent automotive transformation, advanced driver assistance is gradually emerging from cutting-edge technology into the mainstream, becoming a new frontier of industry comp...[Details]
On August 22, Lantu Motors officially launched its Lanhai Intelligent Hybrid technology via an online livestream. This intelligent hybrid technology, which integrates a full-range 800V high-voltage...[Details]
Core point: The automotive industry chain and the humanoid robot industry have collaborative advantages in hardware, software, and scenarios. Upstream and downstream companies in the automotive ind...[Details]
Common Mode Semiconductor has officially released its latest generation of power management ICs—the GM6506 series. This fully integrated high-frequency synchronous rectification step-down p...[Details]
Since the beginning of this year, price wars have intensified, new models have been launched one after another, used cars with zero kilometers have become a hot topic, and the industry's internal c...[Details]
The digital TV set-top box consists of a tuner, QAM demodulator, TS demultiplexer, MPEG-2 decoder, PAUNTSC video encoder, embedded CPU system and peripheral interfaces, CA module, and uplink data m...[Details]
As AI accelerates across industries, the demand for data center infrastructure is also growing rapidly.
Keysight Technologies, in collaboration with Heavy Reading, released the "Beyo...[Details]
While the current industry consensus is that autonomous vehicles are robots and that their systems are managed using robotics-developed thinking, there are also cases where autonomous driving is ac...[Details]
Pure electric vehicles, structurally speaking, have components such as a power battery. In addition to the power battery, a small battery also powers some low-voltage electrical components and even...[Details]
Energy Infrastructure?
京公网安备 11010802033920号
EEWORLD
