PL
IA
N
Features
■
Surface mount 2 mm Square / Single-turn /
■
For trimmer applications/processing
M
T
Cermet / Sealed
■
Compatible with surface mount
manufacturing processes
■
Miniature design for flexibility
■
RoHS compliant*
guidelines,
click here
*R
oH
S
CO
3312 - 2 mm SMD Trimpot
®
Trimming Potentiometer
Electrical Characteristics
Standard Resistance Range
...................... 10 ohms to 2 megohms
(see standard resistance table)
Resistance Tolerance ............ ±20 % std.
End Resistance ......1 % or 2 ohms max.
(whichever is greater)
Contact Resistance Variation
............................5 % or 3 ohms max.
(whichever is greater)
Adjustability
Voltage Divider .........................±0.4 %
Rheostat ...................................±0.8 %
Resolution..................
Insulation Resistance .............. 500 VDC
100 megohms min.
Dielectric Strength
Sea Level ..............................500 VAC
70,000 Feet ...........................350 VAC
Adjustment Angle.................. 255 ° nom.
Environmental Characteristics
Power Rating (50 volts max.)
70 °C ...................................... 0.1 watt
125 °C ....................................... 0 watt
Operating Temperature Range
................................-55 °C to +125 °C
....±100 ppm/°C
Seal Test ..85 °C Fluorinert†/60 seconds
Humidity........ MIL-STD-202 Method 106
TRS ±5 %; IR 10 megohms
Vibration ..... 20 G TRS ±1 %; VRS ±1 %
Shock........ 100 G TRS ±1 %; VRS ±1 %
Load Life @ 70 °C Rated Power
............................................TRS ±3 %
Rotational Life.........25 cycles TRS ±3 %
Thermal Shock .......................... 5 cycles
TRS ±2 %; VRS ±4 %
Physical Characteristics
Mechanical Stop ................... 285 ° nom.
Torque.............................. 0.7 oz-in. max
Stop Strength.................. 0.7 oz-in. nom.
Weight .............. Approximately 0.0321 g
Marking
......... Resistance code and date code
Standard Packaging ..... 500 pcs./7 ” reel
(MSL-1)
Product Dimensions
ELECTRICAL ADJUSTMENT SLOT
0.35
1.5
0.3
WIDE X
LONG X
DEEP
(.014)
(.059)
(.012)
Recommended Land Pattern
1.0
(.039)
0.9
(.035)
2.8
(.110)
1.6
(.063)
2.5
(.098)
0.7
(.028)
2
0.65
(.026)
2 PLCS.
0.5
(.020)
0.9
(.035)
2 PLCS.
0.45
(.018)
Standard Resistance Table
Resistance
(Ohms)
10
20
50
100
200
500
1,000
2,000
5,000
10,000
20,000
50,000
100,000
200,000
500,000
1,000,000
2,000,000
Part Marking
Code
A1
U1
V1
A2
U2
V2
A3
U3
V3
A4
U4
V4
A5
U5
V5
A6
U6
Resistance
Code
100
200
500
101
201
501
102
202
502
103
203
503
104
204
504
105
205
1.9
(.075)
3
1
0.35
(.014)
2 PLCS.
1.25
(.049)
0.45
(.018)
2 PLCS.
Popular values listed in boldface. Consult factory
for special resistances.
How To Order
0.2
(.008)
3312 J - 1 - 502 E
Model
Style
1.7
(.067)
DIMENSIONS:
TOLERANCE:
MM
(INCHES)
± 0.30
(± .012)
Standard Product Indicator
-1 = Standard Product
Resistance Code
Embossed Tape Designator
E = 500 pcs./7 ” Reel (MSL-1)
Tape and reel material meets Antistatic ANSI/
ESD 5541-2003 packaging standards.
2
CCW
WIPER
1
CLOCKWISE
3
CW
WARNING Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
†“Fluorinert” is a registered trademark of 3M Co.
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.
3312 - 2 mm SMD Trimpot
®
Trimming Potentiometer
Processing Information
Process Description
1. Apply solder paste to test board
(8 - 10 mil thick)
Materials
• Sn 96.5/Ag 3.0/Cu 0.5 Alloy
water soluble or no clean solder
paste
• Single sided epoxy glass
(G10) (UL approved)
• PC board approx. 4x4x.06 in.
6 units/board
Convection oven
Temperature
Room temperature
Time Interval
2. Place test units onto board
3. Ramp up
4. Preheat (TS)
5. Time above liquidus (TL)
6. Peak temperature (TP)
7. Ramp down
8. Cleaning water clean profile
2.5 °C ±0.5 °/second
150 °C to 190 °C
220 °C
90 ±30 seconds
60-90 seconds
250 °C +0 °/-5 °
10-20 sec. within 5 °C of peak
Room temperature
3 °C ±0.5 °C/second
As required
High pressure deionized water
65 PSI maximum
72 °F to 160 °F
(22 °C to 71 °C)
TP
RAMP-UP
TL
tP
CRITICAL ZONE
TL TO TP
tL
TEMPERATURE
TS
MAX.
TS
MIN.
ts
PREHEAT
RAMP-DOWN
t 25 °C TO PEAK
8 MINS./248.9 °C
TIME
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
®
®
standard products that are suitable for use in aircraft
®
standard
the user’s sole risk.
®
and the user for which such Bourns
®
®
custom products shall be negotiated on a case-by-case basis by Bourns
®
also apply to such Bourns custom products.
Users shall not sell, transfer, export or re-export any Bourns
®
Bourns
®
standard products shall
products and Bourns technology and technical data may not under any circumstance be
exported or re-exported to countries subject to international sanctions or embargoes. Bourns
®
products may not, without
®
bilingual versions are available at:
Web Page:
http://www.bourns.com/legal/disclaimers-terms-and-policies
PDF:
http://www.bourns.com/docs/Legal/disclaimer.pdf
京公网安备 11010802033920号
EEWORLD
