D50K25KE Ohmite, D50K25KE Datasheet

RESISTOR POWER ADJ 25K OHM 50W

D50K25KE

Manufacturer Part Number
D50K25KE
Description
RESISTOR POWER ADJ 25K OHM 50W
Manufacturer
Ohmite
Series
210r
Datasheet

Specifications of D50K25KE

Resistance (ohms)
25K
Power (watts)
50W
Tolerance
±10%
Adjustment Type
Slide
Size / Dimension
0.562" Dia x 4.000" L (14.27mm x 101.60mm)
Mounting Type
Chassis Mount
Package / Case
Tube with Bolt/Solder Leads
Resistance In Ohms
25.0K
Resistance
25 KOhms
Power Rating
50 Watts
Temperature Coefficient
+/- 260 PPM / C
Operating Temperature Range
+ 25 C to + 350 C
Dimensions
14.3 mm Dia. x 101.6 mm L
Product
Power Resistors Wire Wound Vitreous Enamel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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210 Series
Dividohm
adjustable Power
Choose Ohmite’s 210 Type adjustable resistors for applications
requiring settings at different resistance values. These wire-
wound resistors are equipped with an adjustable lug, making
them ideal for adjusting circuits, obtaining odd resistance values
and setting equipment to meet various line voltages. 210 Type
resistors feature a hollow core to permit secure fastening with
spring-type clips or thru bolts with washers. They also offer the
durability of lead free vitreous enamel coating and all-welded
construction. Mounting brackets not included with resistors.
32
100 –––100E
 = Standard values; check availability using the worldwide inventory
Other sizes available; contact Ohmite. Also available in low cost Centohm or Silicone coating; contact Ohmite.
10 –––10RE
15 –––15RE
20 –––20RE
25 –––25RE
50 –––50RE
75 –––75RE
series
D12
D25
D50
D75
D100
D175
D225
D500
D1000
Coating
Blank = Vitreous
D
Series Wattage
1.0 –––1R0E
2 –––2R0E
3 –––3R0E
4 –––4R0E
5 –––5R0E
7.5 –––7R5E
C = Centohm
S = Silicone
Part No.
Prefix 
Suffix
� � � � � � � �
search at www.ohmite.com
Ohmite Mfg. Co.
o r d e r i n g i n f o
Wattage
1000
100
175
225
500
12
25
50
75
®
Tolerance
J = 5%
K = 10%
Vitreous enamel
L
3.0-27.7K
1.0-100K
1.0-100K
1.0-100K
1.0-100K
1.0-100K
RoHS Compliant
1.0-10K
1.0-25K
1.5-15K
Ohms
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohms
1R0 = 1 Ω
250 = 250 Ω
1K0 = 1,000 Ω
25K = 25,000 Ω
25K5 = 25,500 Ω
Wattage
1.75 / 44.4
10.5 / 266.7
12.0 / 304.8
20.0 / 508.0
2.0 / 50.8
4.0 / 101.6
6.0 / 152.4
6.5 / 165.1
8.5 / 215.9
C
L
S t a n d a r d p a r t n u m b e r S f o r 2 1 0 S e r i e S
Dimensions (in. / mm)
Coating
210 = Vitreous
410 = Silicone Ceramic
610 = Centohm
� � � � � � � � � � � � � �
0.313 / 7.94
0.562 / 14.3
0.562 / 14.3
0.562 / 14.3
0.750 / 19.1
1.125 / 28.6
1.125 / 28.6
2.50 / 63.5
2.50 / 63.5
See website for custom
core and terminal info
1,000 –––1K0E
1,250 –––1K25E 
1,500 –––1K5E
2,000 –––2K0E
2,500 –––2K5E
150 –––150E
200 –––200E
250 –––250E
300 –––300E
400 –––400E
500 –––500E
750 –––750E
800 –––800E
Terminal Selection”
D
Core Diameter
See “Core and
Part No.
Prefix 
Suffix
Wattage
m a d e - t o - o r d e r
0.50 / 12.7
0.75 / 19.1
0.75 / 19.1
1.75 / 44.5
1.75 / 44.5
0.188 / 4.76
0.313 / 7.94
0.313 / 7.94
0.313 / 7.94
50KΩ and 100KΩ resistance values involve very fine resistance wire and should not be
used in critical applications without burn-in and/or thermal cycling.
Terminal Type
See “Resistor Terminals
for Tubular Cores”
C
Ohms
R500 = 0.500 Ω
1R00 = 1 Ω
250R = 250 Ω
1K00 = 1,000 Ω
25K0 = 25,000 Ω
25K5 = 25,500 Ω
F e a t u r e s
• Terminals suitable for soldering
• Adjustable lug supplied.
• High wattage applications.
• All-welded construction.
• Rugged lead free vitreous enam-
• Flame resistant coating.
• Thumb-screw-adjustable lug
• RoHS compliant product avail-
s P e C i F i C a t i O N s
Adjustability is 10% to 90% of full
Material
Coating: Lead free vitreous
Core: Tubular ceramic.
or bolt connection.
el coating.
available (Part No. 2160) for
1.125” core resistors.
able. Add “E” suffix to part num-
ber to specify.
value. Wattage is proportional to
this adjusted resistance value.
enamel.
Code
Core
Wattage
M
D
K
K
K
P
P
S
S
RoHS Compliant
Voltage
1625
2625
2845
3595
4595
4970
8900
Tolerance
J = 5%
K = 10%
565
625
standard
terminal
57
40
40
40
40
46
46
45
45
100,000 –––100KE
10,000 –––10KE
12,000 –––12KE
15,000 –––15KE
20,000 –––20KE
25,000 –––25KE
50,000 –––50KE
3,000 –––3K0E
4,000 –––4K0E
5,000 –––5K0E
6,000 –––6K0E
7,000 –––7K0E
7,500 –––7K5E
Power limitations for high resis-
tance values: When resistance
exceeds the resistance values listed
below, derate the Power Rating by
25% to improve reliability:
Power
rating
100W
12W
25W
50W
75W
Part No.
Prefix 
Suffix
Terminals: Solder coated radial
Adjustable terminal: Nickel
Derating: Linearly from 100% @
Electrical
Tolerance: ±10% (K)
Power rating: Based on 25°C
Overload: 10 times rated wattage
Temperature coefficient:
Dielectric withstanding voltage:
To calculate max. amps: use the
lug. RoHS solder composition is
96% Sn, 3.5% Ag, 0.5% Cu
plated steel. (Screwdriver type
adjustable lug supplied standard.
Other types, including silver con-
tact units, available.)
+25°C to 0% @ +350°C.
free air rating. The stated watt-
age rating applies only when the
entire resistance is in the circuit.
Setting the lug at an intermediate
point reduces the wattage rat-
ing by approximately the same
proportion. Example: If the lug is
set at half resistance, the watt-
age is reduced by approximately
one-half.
for 5 seconds.
±260 ppm/°C
1000 VAC: 12 to 100 watt rating.
3000 VAC: 175 and 225 watt rat-
ing (measured from terminal to
mounting bracket)
formula √P/R.
for mounting hardware
Resistance
20,000Ω
35,000Ω
50,000Ω
4,500Ω
9,000Ω
value
See page 36
Wattage
No power
derating
necessary for
ratings higher
than 100W.

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