81A1A-B28-A13L Bourns Inc., 81A1A-B28-A13L Datasheet - Page 3

• Manufacturer Part Number: 81A1A-B28-A13L
• Description: POT 5K OHM CERMET 2W
• Manufacturer: Bourns Inc.
• Series: 81r
• Type: Potentiometerr

Specifications of 81A1A-B28-A13L

• Adjustment Type: Side Adjustment
• Resistance (ohms): 5K
• Power (watts): 2W
• Tolerance: ±10%
• Temperature Coefficient: ±150ppm/°C
• Number Of Turns: Single
• Rotation: 300°
• Resistive Material: Cermet
• Termination Style: Through Hole
• Actuator Length: 22.23mm
• Actuator Type: Slotted Shaft
• Actuator Diameter: 6.35mm
• Package / Case: Square - 0.625" L x 0.625" W x 0.625" H (15.88mm x 15.88mm x 15.88mm
• Resistance In Ohms: 5.00K
• Track Resistance: 5kohm
• Track Taper: Linear
• No. Of Turns: 1
• Resistance Tolerance: ± 20%
• Power Rating: 2W
• Potentiometer Mounting: PCB
• Resistance: 5 KOhms
• Taper: Linear
• Element Type: Cermet
• Shaft Type: Slotted
• Shaft Length: 7/8 in
• Shaft Diameter: 1/4 in
• Product: Precision Potentiometers & Dials
• Angle, Mechanical: 300 °
• Diameter, Shaft: 0.25 "
• Dielectric Strength: 1500 VAC
• Dimensions: 0.625"L×0.625"W×0.625"H
• Linearity: ±5 %
• Material, Element: Cermet
• Mounting Type: Panel
• Power, Rating: 2 W
• Resistance, Insulation: 1000 Megohms
• Resolution: Infinite
• Rotational Life: 100000 Cycles
• Temperature, Operating, Maximum: +125 °C
• Temperature, Operating, Minimum: -40 °C
• Termination: PC Pins
• Torque: 0.14 to 1.06 N-cm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
Product Dimensions
Model 81/82
Single Unit - PC Pins & J-Hook
(.375 ±.015)
"E" Bushing
1/4 " (6.35 mm) Dia. Locking - Single Shaft
Dual Unit - PC Pins & J-Hook
"A" Bushing
3/8 " (9.53 mm) Dia. Plain - Single Shaft
9.50 ± .38
(.312)
(.500 ± .005)
7.92
1/4-32 UNEF
12.7 ± .13
(.216)
"A" BUSHING END FOR SHAFTS UNDER
5.49 OPTIONAL FLAT 16.00 LONG OR 1.52 FROM
81/82 - 5/8 ” Square Single-Turn Panel Control
Terminal outlines shown as solid lines represent PC Pins, available
on Model 81. Dashed line terminal outline represents "J" Hook,
available on Model 82.
MIN.
(.375 ± .005)
(.625 ± .016)
PILOT DIA.
9.53 ± .13
15.88 ± .41
(1.025 ± .031)
(.250 ± .002)
26.04 ± .79
(.425)
10.80
PILOT DIA.
MIN.
6.35 ± .05
(.200 ± .015)
5.08 ± .38
3/8-32 UNEF
(.235 ± .015)
(.63)
5.97 ± .38
(.625 ± .015)
15.88 ± .38
(.400 ± .015)
10.16 ± .38
45 ° ±5 ° X
CHAMFER
12.7,15.88,19.05,22.23± .79
45 ° ±5 ° X (.010)
(5/8 ± 1/32)
CHAMFER
15.88 ± .79
STANDARD
SHAFT SLOT
(.063+.015/-.000)
SHAFT SLOT
(.125 ± .001)
(.031 ± .001)
(.50)
12.7
(1/2, 5/8, 7/8, ± 1/32)
1.60+.38/-.00
.78 ± .03
3.18 ± .03
( 11/16 )
17.46
(1/4 ± 1/32)
(.06)
6.35 ± .03
STANDARD
(.010)
.25
(.031)
(.047)
.25
1.19
.78
DIA.
DEEP
(.200 ± .015)
DIA.
WIDE X
WIDE X
5.08 ± .38
DEEP
(.032)
(.377 ± .015)
.81
9.58 ± .38
(.150)
3.81
(.470)
11.94
DIA.
(3/4 ± 1/32)
STANDARD
Triple Unit - PC Pins & J-Hook
19.05 ± .79
3/8-32 UNEF
(.125)
MAX. 3 PLCS.
"B" Bushing
3/8 " (9.53 mm) Dia. Plain - Single Shaft
OUTER SHAFT 7.47 DIA. OPERATES SECTION #1 INNER SHAFT
3.18
(.210 ± .03)
(.500 ± .005)
"A" Bushing
3/8 " (9.53 mm) Dia. Plain - Concentric Shaft
3/8-32 UNEF
12.70 ± .13
5.33 ± .76
(.625 ± .015)
15.88 ± .38
DIA. OPERATES SECTION #2, #3, & #4 ("G" STYLE)
(.249)
(1.425 ± .047)
(.375 ± .005)
36.20 ± 1.19
(.200 ± .005)
PILOT DIA.
9.53 ± .13
11.13
(.438)
5.08 ± .13
MIN.
(1-1/8 ± 1/32)
Model 81
Suggested PC Board Layout - PC Pins
(Single-Shaft Style Bottom View)
28.58 ± .79
STANDARD
(9.53)
Note: For units with dual concentric shaft styles, a
.100 (2.54) spacer is added between the module(s) driven
by the outer shaft and those driven by the inner shaft.
For G, K, or V shafts, add the spacer between
modules 1 and 2. For L or M shafts, add the spacer
between modules 2 and 3. For N or P shafts, add the
spacer between modules 3 and 4.
.375
TRIPLE CONCENTRIC
(SPECIAL ORDER)
DIMENSIONS ARE:
(.400 ± .015)
(5/8 ± 1/32)
15.88 ± .79
STANDARD
10.16 ± .38
45 ° ±5 ° X
CHAMFER
(.400 ± .005)
(.249 ± .001)
10.16 ± .13
(.063 +.015/-.000)
SHAFT SLOT
1.60 + .38/- .00
6.32 ± .03
(.045)
1.14
(.249 ±.001)
6.32 ± .03
(.1245 ± .001)
DIA.
3.162 ± .025
TYP.
(.010)
(.078 ± .001)
.25
1.98 ± .03
(.047)
DIA.
1.19
WIDE X
DEEP
DIA.
DIA.
DIA.
(INCHES)
Quad Unit - PC Pins & J-Hook
(.200 ± .005)
1
MM
5.08 ± .13
"C" Bushing
1/4 " (6.35 mm) Dia. Plain - Single Shaft
(.250 ± .005)
"C" Bushing
1/4 " (6.35 mm) Dia. Plain - Concentric Shaft
6.35 ± .13
3
2
(1.95)
(.175)
OUTER SHAFT 3.18 DIA. OPERATES SECTION #1 INNER SHAFT
MIN.
.078
4.45
(5/8 ± 1/32)
15.88 ± .79
STANDARD
1/4-32 UNEF
DIA. OPERATES SECTION #2, #3, & #4 ("G" STYLE)
(.250 ± .002)
(.094 ± . 005)
PILOT DIA.
"C" BUSHING END FOR SHAFTS UNDER
(.400 ± .015)
6.35 ± .05
10.16 ± .38
2.39 ± .13 OPTIONAL FLAT 6.35 LONG OR 1.52 FROM
(.125)
(1.825 ± .047)
46.36 ± 1.19
1/4-32 UNEF
Shaft Flat Orientation*
*EXCLUDES MODELS 83 AND 84
(.25)
TYP.
6.35
STANDARD
25.40 ± .79
(1 ± 1/32)
SLOTTED SHAFT
FLATTED SHAFT
1 2 3
(.1245 ± .001)
3.162 ± .025
9.53,12.7,15.88,19.05,22.23 ± .79
(.250)
(3/8, 1/2, 5/8, 3/4, 7/8, ± 1/32)
45 ° ±5 ° X
CHAMFER
(.1245 ± .001)
30 ° ±5 °
3.162 ± .025
120 ° ± 5 ° CCW END
SHAFT SLOT
(.031 ± .010)
.79 ± .25
(.078 ± .001)
14.30
(9/16)
STANDARD
1.98 ± .03
DIA.
(.010)
.25
DIA.
(.06)
(.031)
.79
DEEP
DIA.
WIDE X