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.
A Simple Study of 51 Single-Chip Microcomputer Keil C Delay Program by: InfiniteSpace Studio/isjfk, 1.21.2004 Anyone can freely reprint this article on the premise of indicating the original author an...
WIFI is increasingly used in smart phones, smart TVs, smart routers, etc. What kind of highways are their signal buses running on? First, let’s count the traffic rules. There are quite a few of them. ...
In KEIL, how do I copy a data segment or a function to RAM after startup and run it?How do I get the address of the segment after divergent loading?If the function is copied to RAM, how do I execute i...
Recently I am working on the iso7816 driver for 9260. For convenience, I modified it based on atmel_serial.c. Now I find that the driver has no problem sending, but I can't read the data when receivin...
[Introduction] In the workplace, there is a long distance between your current location and your ideal location. The distance between the two points is fixed, but there are thousands of paths to get f...
According to foreign media reports, Ford Motor has applied to the U.S. Patent and Social Security Administration (USPTO) for a patent for a remote vehicle control system that may be used in future ...[Details]
PV DC fuses are safety devices used to protect PV panels, inverters, and DC loads. To ensure their safety and reliability, they must be UL248 certified.
Before applying for UL248 certifi...[Details]
If the ultimate form of a car is a silicon-based life form, then in
the field of
intelligent driving
, it has gradually taken on the appearance of a "veteran driver." In
the field of
the ...[Details]
Electric vehicles are currently gaining momentum, but this is just a facade. Fuel-powered vehicles remain unchallenged. While electric vehicles boast unique advantages in environmental emissions an...[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]
The structure of an LCD TV primarily consists of the LCD display module, power module, driver module (primarily including the main driver board and tuner board), and keypad module. LCD display modu...[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]
According to foreign media reports, researchers at the University of Surrey have developed an artificial intelligence system that can accurately locate the location of equipment in densely populate...[Details]
With the rapid advancement of automation technology, collaboration between robots is no longer just science fiction. Imagine dozens of machines moving goods in a warehouse without interfering with ...[Details]
In June 2014, the Ministry of Industry and Information Technology issued 4G FD-LTE licenses to China Unicom and China Telecom. Together with the 4G TD-LTE licenses issued to China Mobile, China Uni...[Details]
Smartphones have become essential digital devices, and the growing number of smartphone-centric applications is enriching people's lives. As users, they desire a better app experience and a wider r...[Details]
In the electronics manufacturing industry, surface mount technology (SMT) placement machines are core equipment for production lines. However, with many different models available on the market, ch...[Details]
A multilevel inverter converts a DC signal into a multilevel staircase waveform. Instead of a straight positive-negative output waveform, the output waveform of a multilevel inverter alternates in ...[Details]
In daily life, power transformers have different functions and uses due to different usage scenarios. The most common ones can be divided into: control transformers, isolation transformers, rectifi...[Details]
"We have successfully launched the first version of our dedicated chip for EMB brake-by-wire. Second-generation samples have also been successfully completed, and we are actively planning a third-g...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
