KVSF
resistors
trimmer potentiometers
EU
features
•
Products with lead-free terminations meet EU RoHS and China RoHS requirements
dimensions and construction
SF6 Top Adjust Type
Dimensions
mm
RESISTANCE
637A
Carbon Film, Standard
0.3
(0.6)
(0.8)
7.5±0.5 3.5±0.5
3.0±0.5
7.3±0.5
SF6 Side Adjust Type
Dimensions
mm
RESISTANCE
639A
Carbon Film, Standard
6.4±0.5
(0.8)
(4.5) (3.3)
7.8±0.5
5.2±0.5
(1.1)
(2.5)(2.5)
(4.0)
0.3
(0.6)
5.0±0.5
(1.1)
(9.2)
5.0±0.5
6.4±0.5
3.5
(3.2)
(0.3)
5.0±0.5
(0.3)
2.5±0.5
637T
Carbon Film, Radial Taping
RESISTANCE
(0.3)
(0.8)
7.6±0.5
3.0
639T
Carbon Film, Radial Taping Type
(1.1)
6.5
(4.2)
(0.8)
RESISTANCE
6.2
3.1 3.1
(1.95)
(3.8) (3.3)
(4.5)
7.8
5.0
+0.8
-0.2
5.7±0.5
(4.0)
7.4±0.5
(1.1)
2.5 2.5
5.0
+0.8
-0.2
(0.3)
(0.4)
2.6 2.5
0.3
Printed Board Framework (Ref.)
Dimensions
mm
øD
B
2- ø C
Type
637A
637T
639A
639T
A
5.0
3.0
2.5
2.5
B
5.0
5.0
5.0
5.0
C
1.2
1.0
1.0
1.0
(2.2)
D
1.2
1.3
1.0
1.3
ordering information
New Part #
KVSF
Product
Code
637A
Type
SF6: 637A, 639A,
637T, 639T
C
Termination
Material
C: SnCu
103
Nominal
Resistance
2 significant figures
+ 1 multiplier
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
A
12/30/08
138
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
KVSF
trimmer potentiometers
applications and ratings
Part
Designation
637A, 639A,
637T, 639T
Power
Rating
@ 70°C
0.1W
Resistance
Range
E-6 & 1,2,3,5x10
n
200Ω - 1MΩ
Resistance
Tolerance
±30%
Maximum
Working
Voltage
50V
Rated
Ambient
Temperature
+50°C
Operating
Temperature
Range
-10°C to +70°C
resistors
environmental applications
Derating Curve
100
80
% Rated Power
60
40
33
20
0
-40 -20
-10
637A,
639A,
637T,
639T,
0
60
80
100
50
85
Ambient Temperature
(°C)
20
40
Performance Characteristics
Parameter
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Endurance at 70°C
High Temperature Exposure
Rotational Life
Requirement
∆
R
Limit
Typical
3
5
20
2
4.5
12
-12
-13
11
Test Method
260°C ± 5°C, 5 seconds +1 second
-10°C / +25°C / +70°C (30 minutes), 5 cycles
40°C ± 2°C, 90 - 95% RH, 350 hours, 1.5 hr ON, 0.5 hr OFF cycle
70°C ± 2°C, 240 hours, 1.5 hr ON, 0.5 hr OFF cycle
70°C ± 3°C, 240 hours
20 turns
+5, -20
+5, -20
15
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
12/30/08
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
139
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