Features
■ 3/8 ” Square/ Multiturn / Cermet /
Industrial / Sealed
■ Five popular terminal styles
■ Standoffs
■ RoHS compliant* version available
■ For trimmer applications/processing
guidelines, click here
3299 - 3/8 ” Square Trimpot® Trimming Potentiometer
“Trimpot” is a registered trademark of Bourns, Inc.
†“Fluorinert” is a registered trademark of 3M Co.
*RoHS Directive 2002/95/EC Jan. 27, 2003 including
annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data
sheet can and do vary in different applications and
actual device performance may vary over time.
Users should verify actual device performance in their
specifi c applications.
Electrical Characteristics
Standard Resistance Range
................................10 to 2 megohms
(see standard resistance table)
Resistance Tolerance ........... ±10 % std.
(tighter tolerance available)
Absolute Minimum Resistance
........................... 1 % or 2 ohms max.
(whichever is greater)
Contact Resistance Variation
........................ 1.0 % or 3 ohms max.
(whichever is greater)
Adjustability
Voltage .................................. ±0.01 %
Resistance ............................ ±0.05 %
Resolution ................................... Infi nite
Insulation Resistance ...............500 vdc.
1,000 megohms min.
Dielectric Strength
Sea Level................................ 900 vac
70,000 Feet ............................ 350 vac
Eff ective Travel .................25 turns nom.
Environmental Characteristics
Power Rating (300 volts max.)
70 °C ......................................0.5 watt
125 °C .......................................0 watt
Temperature Range ... -55 °C to +125 °C
Temperature Coeffi cient ... ±100 ppm/°C
Seal Test ......................85 °C Fluorinert†
Humidity .......MIL-STD-202 Method 103
96 hours
(2 % ΔTR, 10 Megohms IR)
Vibration ....... 20 G (1 % ΔTR; 1 % ΔVR)
Shock ......... 100 G (1 % ΔTR; 1 % ΔVR)
Load Life
............. 1,000 hours 0.5 watt @ 70 °C
(3 % ΔTR; 3 % or 3 ohms,
whichever is greater, CRV)
Rotational Life .......................200 cycles
(4 % ΔTR; 3 % or 3 ohms,
whichever is greater, CRV)
Physical Characteristics
Torque .............................3.0 oz-in. max.
Mechanical Stops ................. Wiper idles
Terminals .......................Solderable pins
Weight ..................................... 0.035 oz.
Marking ...........................Manufacturer’s
trademark, resistance code,
wiring diagram, date code,
manufacturer’s model
number and style
Wiper ............... 50 % (Actual TR) ±10 %
Flammability ..........................U.L. 94V-0
Standard Packaging .....50 pcs. per tube
Adjustment Tool ..............................H-90
Product Dimensions
13CW
CLOCKWISE
CCW
2WIPER
Standard Resistance Table
Resistance Resistance
(Ohms) Code
10 100
20 200
50 500
100 101
200 201
500 501
1,000 102
2,000 202
5,000 502
10,000 103
20,000 203
25,000 253
50,000 503
100,000 104
200,000 204
250,000 254
500,000 504
1,000,000 105
2,000,000 205
REV. 04/14
TOLERANCES: ± 0.25 EXCEPT WHERE NOTED
(.010)
DIMENSIONS: MM
(INCHES)
How To Order
3299 W - 1 - 103 LF
Model
Style
Standard or Modifi ed
Product Indicator
-1 = Standard Product
Resistance Code
Terminations
LF = 100 % Tin-plated (RoHS compliant)
Blank = 90 % Tin / 10 % Lead-plated
(Standard)
Consult factory for other available options.
Popular distribution resistance values listed in
boldface. Special resistances available.
1.52
(.060)
3
2
1
BOTTOM VIEW
BOTTOM VIEW
BOTTOM VIEW
BOTTOM VIEW
BOTTOM VIEW
3299P
Common Dimensions
1.09
(.043)
6.10 +.30/-.25
(.240 +.012/-.010)
3299W 1.91
(.075)
2
3
1
3299X
2
3
1
3299Y
2
3
1
3299Z
2
3
1
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
2.54
(.100)
1.91
(.075)
1.91
(.075)
1.91
(.075)
2.54
(.100)
MIN.
2.54
(.100) 2.54
(.100)
2.54
(.100)
.51
(.020) DIA. TYP.
5.23
(.206)
10.03
(.395)
.38
(.015)
9.53
(.375)
1.12
(.044)
6.22 ± 1.14
(.245 ± .045)
ADJ. SLOT
2.29
(.090)
.56
(.022)
.64
(.025)
WIDE
X
XDEEP
DIA.
*RoHS COMPLIANT
VERSIONS
AVAILABLE
Product Dimensions
TOLERANCES: ± 0.25 EXCEPT WHERE NOTED
(.010)
DIMENSIONS: MM
(INCHES)
*RoHS COMPLIANT
VERSIONS
AVAILABLE
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Bourns:
3299Z-1-501 3299Y-1-503 3299Z-1-503 3299Y-1-501 3299X-1-503 3299Z-1-500 3299Y-1-502 3299X-1-500
3299X-1-501 3299Z-1-502 3299Z-1-505 3299X-1-504 3299X-1-502 3299Y-1-504 3299Z-1-504 3299Y-1-500
3299P-1-500 3299P-1-502 3299W-1-500 3299W-1-504 3299P-1-501 3299W-1-502 3299P-1-503 3299W-1-501
3299W-1-503 3299P-1-504 3299Z-1-102 3299Z-1-100 3299Y-1-102 3299X-1-102 3299Y-1-105 3299X-1-101
3299X-1-103 3299Z-1-104 3299X-1-104 3299Z-1-101 3299Y-1-100 3299X-1-100 3299Y-1-104 3299X-1-105
3299Z-1-105 3299Y-1-101 3299Y-1-103 3299Z-1-103 3299W-1-204 3299P-1-200 3299P-1-201 3299W-1-205
3299P-1-203 3299W-1-203 3299P-1-205 3299W-1-201 3299W-1-202 3299P-1-202 3299P-1-204 3299W-1-200
3299W-1-253 3299P-1-253 3299P-1-254 3299W-1-254 3299P-1-104LF 3299X-1-104LF 3299Y-1-100LF 3299X-1-
100LF 3299Y-1-104LF 3299P-1-100LF 3299Z-1-100LF 3299W-1-104LF 3299W-1-105LF 3299Z-1-101LF 3299X-1-
101LF 3299Y-1-105LF 3299P-1-101LF 3299P-1-502LF 3299X-1-502LF 3299P-1-201LF 3299Y-1-205LF 3299X-1-
201LF 3299Z-1-201LF 3299W-1-205LF 3299X-1-205LF 3299Y-1-201LF 3299P-1-205LF 3299W-1-201LF 3299Z-1-
205LF 3299Y-1-102LF 3299W-1-102LF 3299Z-1-102LF 3299X-1-102LF 3299P-1-102LF 3299Z-1-104LF 3299W-1-
100LF 3299Z-1-504LF 3299W-1-500LF 3299X-1-504LF 3299Y-1-500LF 3299P-1-504LF 3299Y-1-502LF 3299W-1-
502LF 3299Z-1-502LF
