Features
n
Small diameter
n
Wide resistance range
n
Good resolution
n
Linear tapers
n
Cermet element
3862 – 1/2 ˝ Diameter Single-Turn Panel Control
Standard Resistance Range 1K ohms to 1 megohm
Total Resistance Tolerance(A Taper) ±10 %
(H Taper) ±5%
Independent Linearity ±5 %
Absolute Minimum Resistance 2 ohms maximum
Effective Electrical Angle 260 ° ±10 °
Contact Resistance Variation ±3 % or 6 ohms (whichever is greater)
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level 750 VAC minimum
70,000 Feet 350 VAC minimum
Insulation Resistance (500 VDC) 1,000 megohms minimum
Power Rating (Voltage Limited by Power Dissipation or 350 VAC, Whichever is Less)
+70 °C1 watt
+125 °C0 watt
Theoretical Resolution Essentially infinite
Operating Temperature Range -40 °C to +125 °C
Storage Temperature Range -65 °C to +125 °C
Temperature Coefficient Over Storage Temperature Range ±150 ppm/°C
Vibration 20 G
Total Resistance Shift ±2 % maximum
Voltage Ratio Shift ±6 % maximum
Shock 50 G
Total Resistance Shift ±2 % maximum
Voltage Ratio Shift ±6 % maximum
Load Life 1,000 hours
Total Resistance Shift ±3 % maximum
Rotational Life, No Load
(C & N Bushings) 50,000 cycles
(E & T Bushings) 1,000 cycles
Total Resistance Shift ±5 % maximum
Contact Resistance Variation±3 % or 6 ohms (whichever is greater)
Moisture Resistance (MIL-STD-202, Method 106, Condition B)
Total Resistance Shift ±2 % maximum
Insulation Resistance (500 VDC) 100 megohms minimum
Salt Spray MIL-STD-202, Method 101, Condition A
IP Rating IP 40
Stop Strength33 N-cm (3 lb-in) maximum
Mechanical Angle 295 ° ±3 °
Torque
Starting and Running 353 N-cm (5 oz-in) maximum
Mounting (Torque on Bushing) 17-20 N-m (15-18 lb-in) maximum
Shaft Locking Torque with Locking Bushings 1412 N-cm (20 oz-in)
Weight (Single Section) 25 grams maximum
Terminals Printed circuit pins or J-Hooks
Soldering Condition Recommended hand soldering using Sn85/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, date code, resistance, manufacturer’s part number
Ganging 1 cup maximum
Hardware One lockwasher (H-37-1) and one mounting nut (H-38-1) is shipped with each potentiometer;
locking bushing versions are shipped with one additional locking nut (H-38-3)
1 ELECTRICAL SPECIFICATIONS TESTED AT 250 RPM, AT ROOM AMBIENT: +25 °C NOMINAL.
Initial Electrical Characteristics
1
Environmental Characteristics
1
Mechanical Characteristics
1
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
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.
How to Order 3862 Series Panel Controls
3862
C
-
28
2
-
102
A
L
12
16
20
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 1/8 ” (3.18 mm) D
5/8 ” (15.88 mm) L x 1/8 ” (3.18 mm) D
7/8 ” (22.20 mm) L X 1/8 ” (3.18 mm) D
BUSHINGS
C
C
C, E, N, T
C, E, N, T
RESISTANCE
CODE/VALUE
(IN OHMS)
(102)
(252)
(502)
(103)
(253)
(503)
(104)
(254)
(504)
(105)
1K
2.5K
5K
10K
25K
50K
100K
250K
500K
1M
RoHS IDENTIFIER
L
Compliant
Consult factory for lengths not shown.
BUSHING
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 1/4 ” (6.35 mm) D x 3/8 ” (9.53 mm) L
Locking 1/4 ” (6.35 mm) D x 3/8 ” (9.53 mm) L
ELEMENT
TAPER/TOLERANCE
A
H
Linear ±10 %
Linear ±5 %
C
E
N
T
MODEL
3862 1/2 ” (12.7 mm) D Single-Turn Cermet
1
2
3
5
6
7
TERMINAL STYLE AND
SHAFT TYPE
Solder Lugs, Plain End
Solder Lugs, Slotted End
Solder Lugs, Flatted Shaft
PC Pins, Plain End
PC Pins, Slotted End
PC Pins, Flatted End
Boldface features are Bourns standard
options. All others are available with higher
minimum order quantities.
Asia-Pacific:
Tel: +886-2 2562-4117 • Email: asiacus@bournscom
EMEA:
Tel: +36 88 885 877 • Email: eurocus@bournscom
The Americas:
Tel: +1-951 781-5500 • Email: americus@bournscom
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.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns
®
products manufactured by or on behalf of Bourns, Inc. and
Unless otherwise expressly indicated in writing, Bourns
®
products and data sheets relating thereto are subject to change
and complete before placing orders for Bourns
®
products.
The characteristics and parameters of a Bourns
®
product set forth in its data sheet are based on laboratory conditions, and
statements regarding the suitability of products for certain types of applications are based on Bourns’ knowledge of typical
requirements in generic applications. The characteristics and parameters of a Bourns
®
®
product with other components
the actual performance of the Bourns
®
®
®
product as meeting the requirements of a particular industry
®
of Bourns products are responsible for ensuring compliance with safety-related requirements and standards applicable to
®
Bourns
®
on a case-by-case basis, use of any Bourns
®
®
®
®
®
Bourns
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®
standard products that are suitable for use in aircraft
®
standard
the user’s sole risk.
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and the user for which such Bourns
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custom products shall be negotiated on a case-by-case basis by Bourns
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also apply to such Bourns custom products.
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products and Bourns technology and technical data may not under any circumstance be
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