MP25 Datasheet, PDF (1/1 Pages) Vishay Siliconix – Power Rheostats

MP25
Vishay Angstrohm
Power Rheostats
100 Watt
RESISTANCE VALUES*
TOTAL MAXIMUM APPROXIMATE
OHMS AMPS
STEPS
0.5
14.140
30
1.0
10.000
30
2.0
7.071
56
3.0
5.774
66
5.0
4.472
56
7.5
3.652
66
10.0
3.162
104
15.0
2.582
113
25.0
2.000
144
50.0
1.414
180
75.0
1.155
180
100.0 1.000
216
200.0 0.707
252
300.0 0.557
252
400.0 0.500
252
500.0 0.447
324
750.0 0.365
396
1000.0 0.316
410
2000.0 0.224
410
2500.0 0.200
410
5000.0 0.141
685
7500.0 0.115
820
10000.0 0.100
820
* All other intermediate resistance values are available
and can be manufactured on a normal delivery cycle.
FEATURES
• Diameter 3 5/32" [80.17mm]
• Depth behind panel 1 1/2" [38.10mm]
• Shaft 1/4" [6.35mm] diameter
• Rotation 300° ± 5°
• Weight 0.594 pounds (268 grams)
• Mounts on panels up to 1/4" [6.35mm] by means of a 3/8" [9.52mm], 32 bushing
and hex nut
• Non-turn lugs require 3/16" [4.76mm] hole, 1/2" [12.70mm] below center of shaft -
Model "A" shaft
• U. L. Listed, File No. E51076
DIMENSIONS in inches [millimeters]
3 5/32
[80.17]
Dia.
(3) .162 [4.11] Holes
2 1/16
[52.39] R
2 1/64
[51.20]
1 1/2
[38.10]
7/8
[22.22]
3/8
[9.52]
1/2
[12.70]
1/16
[1.59]
1/4
[6.35]
3/8 [9.52]
3/32
[2.38]
7/32
[5.56]
Knob # 552
1 1/2
[38.10]
Dial # 548
3/4
[19.05]
DERATING
2 1/4 [57.15]
Angstrohm rheostat standard
wattage ratings are based on a
300°C rise in “free-air” in ambient not
exceeding + 40°C (shown). For
other applications, wattage ratings
are available based on 340°C rise in
"free-air" in ambient not exceeding
+ 25°C, and in other cases + 50°C.
120
100
80
60
40
20
0
40
100 150 200 250 300 350
AMBIENT TEMP. DEG. CENTIGRADE
SPECIAL SHAFTS in inches [millimeters]
1/2
[12.70]
11/32 [8.73]
3/4
[19.05]
5/8 [15.88]
5/8
[15.88]
1/2 [12.70]
27/32
[21.43]
11/32 [8.73]
TYPE B: 1/2 [12.70], 11/32 [8.73]
Models. Slotted shaft with standard
bushing for 1/8 [3.18] panel.
MARKING
— Resistance value
— Amps
— Date code
TYPE C: 3/4 [19.05], 5/8 [15.88]
Models. Locking bushing with
slotted shaft for 1/4 [6.35] panel.
TYPE D: 5/8 [15.88], 1/2 [12.70]
Models. Locking bushing with
slotted shaft for 1/8 [3.18] panel.
TYPE E: 27/32 [21.43], 11/32 [8.73]
Models. Std. bushing and flatted shaft
w/screwdriver slot for 1/8 [3.18] panel.
ORDERING INFORMATION
MP25
MODEL
A
BUSHING AND SHAFT CONFIGURATION
A = Standard Flatted Shaft
25
VALUE
NOTE: For Additional Features: Submit detailed drawing information when ordering “non-standard” parts.
www.vishay.com
6
Document Number: 66104
Revision 25-Aug-00