D25K300E [OHMITE]
Potentiometer, Wire Wound, 25W, 300ohm, 625V, 10% +/-Tol, -260,260ppm/Cel, ROHS COMPLIANT;
| 型号： | D25K300E |
| 厂家： | 
OHMITE MFG. CO. |
| 描述： | Potentiometer, Wire Wound, 25W, 300ohm, 625V, 10% +/-Tol, -260,260ppm/Cel, ROHS COMPLIANT 电阻器 |
| 文件： | 总2页 (文件大小：212K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
210 Series
Dividohm® Vitreous Enamel
Adjustable Power
F ꢀ at u ꢁ ꢀ S
•ꢀTerminalsꢀsuitableꢀforꢀsolderingꢀorꢀboltꢀconnection.ꢀ
•ꢀAdjustableꢀlugꢀsupplied
•ꢀHighꢀwattageꢀapplications
•ꢀAll-weldedꢀconstruction
•ꢀRuggedꢀleadꢀfreeꢀvitreousꢀenamelꢀcoating.
•ꢀFlameꢀresistantꢀcoating
•ꢀThumb-screw-adjustableꢀlugꢀavailableꢀ(PartꢀNo.ꢀ
2160) for 1.125” core resistors
•ꢀRoHSꢀcompliantꢀproductꢀavailable.ꢀAddꢀ“E”ꢀsuffixꢀtoꢀ
part number to specify
Choose Ohmite’s 210 Type adjustable resistors for
applications requiring settings at different resistance
values. These wirewound resistors are equipped with
an adjustable lug, making them ideal for adjusting
circuits, obtaining odd resistance values and set-
ting 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.
SꢀꢁꢂꢀS SPꢀcꢂFꢂcatꢂONS
Series
D12
D25
D50
D75
D100
D175
D225
D500
D1000
Wattage
Ohms
1.0-10K
Core Code Voltage
565
625
Standard Terminal
12
25
50
75
D
K
57
40
40
40
40
46
46
45
45
1.0-25K
1.0-100K
1.0-100K
1.0-100K
1.0-100K
1.0-100K
1.5-15K
K
K
M
P
P
S
S
1625
2625
2845
3595
4595
4970
8900
100
175
225
500
1000
3.0-27.7K
Other sizes available; contact Ohmite. Also available in low cost Centohm or Silicone coating; contact Ohmite.
chaꢁactꢀꢁꢂStꢂcS
10% to 90% of full value. Wattage is proportional to this adjusted
resistance value.
Adjustability
Lead free vitreous enamel.
Tubular ceramic.
Coating
Core
Solder coated radial lug. RoHS solder composition is 96% Sn,
3.5% Ag, 0.5% Cu
Terminals
Nickel plated steel. (Screwdriver type adjustable lug supplied
Adjustable
terminal
Power limitations for high resis-
standard. Other types, including silver contact units, available.)
Linearly from 100% @ +25°C to 0% @ +350°C.
±10% (K)
tance values: When resistance
exceeds the resistance values listed
below, derate the Power Rating by
25% to improve reliability:
Derating
Tolerance
Based on 25°C free air rating. The stated wattage rating applies
only when the entire resistance is in the circuit. Setting the lug at
an intermediate point reduces the wattage rating by approximately
the same proportion. Example: If the lug is set at half resistance,
the wattage is reduced by approx. one-half.
Power rating
Power Resistance No power
rating value
derating neces-
sary for ratings
higher than
100W.
12W
25W
50W
75W
4,500Ω
9,000Ω
20,000Ω
35,000Ω
10 times rated wattage for 5 seconds.
±260 ppm/°C
Overload
Temperature
coefficient
100W 50,000Ω
1000 VAC: 12 to 100 watt rating. 3000 VAC: 175 and 225 watt rat-
ing (measured from terminal to mounting bracket)
Dielectric
withstanding
voltage
To calculate, use the formula √P/R.
Max. amps
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
108
ꢀ=ꢀ
Standardꢀvalues;ꢀcheckꢀavailabilityꢀatꢀ
210 Series
Dividohm® Vitreous Enamel
Adjustable Power
dꢂmꢀNSꢂONS
(in. / mm)
Series Wattage
L
D
C
Core Code Standard Terminal
D12
12
1.75 / 44.4
2.0 / 50.8
4.0 / 101.6
6.0 / 152.4
6.5 / 165.1
8.5 / 215.9
10.5 / 266.7
12.0 / 304.8
20.0 / 508.0
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
0.188 / 4.76
0.313 / 7.94
0.313 / 7.94
0.313 / 7.94
0.50 / 12.7
0.75 / 19.1
0.75 / 19.1
1.75 / 44.5
1.75 / 44.5
D
K
K
K
M
P
P
S
S
57
40
40
40
40
46
46
45
45
D25
25
D50
50
D
C
D75
75
D100
D175
D225
D500
100
175
225
500
L
D1000 1000
OꢁdꢀꢁꢂNg ꢂNFOꢁmatꢂON
Coating
Made-to-order Parts
Blank = Vitreous
C = Centohm
S = Silicone
RoHS Compliant
Core Diameter Terminal Type
See “Core and See “Resistor Terminals
Terminal Selection” for Tubular Cores”
RoHS Compliant
See 270 series custom core
and terminal info
Series Wattage Tolerance Ohms
5% 1R0 = 1Ω
J
=
Tolerance
5%
K = 10%
Coating
Wattage
Ohms
R500 = 0.500Ω
1R00 = 1Ω
250R = 250Ω
1K00 = 1,000Ω
25K0 = 25,000Ω
25K5 = 25,500Ω
K = 10% 250 = 250Ω
1K0 = 1,000Ω
J =
210 = Vitreous
410 = Silicone Ceramic
610 = Centohm
25K = 25,000Ω
25K5 = 25,500Ω
Standard Values
Wattage
Wattage
Wattage
Part No.
Prefixꢀ
Suffixꢀ
Part No.
Prefixꢀ
Suffixꢀ
Part No.
Prefixꢀ
Suffixꢀ
1.0 –––1R0Eꢀ
ꢀ
150 –––150Eꢀ
ꢀ
3,000 –––3K0Eꢀ
4,000 –––4K0Eꢀ
5,000 –––5K0Eꢀ
6,000 –––6K0Eꢀ
7,000 –––7K0Eꢀ
7,500 –––7K5Eꢀ
10,000 –––10KEꢀ
12,000 –––12KEꢀ
15,000 –––15KEꢀ
20,000 –––20KEꢀ
25,000 –––25KEꢀ
50,000 –––50KEꢀ
100,000 –––100KEꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
2
3
4
5
–––2R0Eꢀ
–––3R0Eꢀ
–––4R0Eꢀ
–––5R0Eꢀ
200 –––200Eꢀ
250 –––250Eꢀ
300 –––300Eꢀ
400 –––400Eꢀ
500 –––500Eꢀ
750 –––750Eꢀ
800 –––800Eꢀ
1,000 –––1K0Eꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
7.5 –––7R5Eꢀ
10 –––10REꢀ
15 –––15REꢀ
20 –––20REꢀ
25 –––25REꢀ
50 –––50REꢀ
75 –––75REꢀ
100 –––100Eꢀ
ꢀ ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
1,250 –––1K25Eꢀ
1,500 –––1K5Eꢀ
2,000 –––2K0Eꢀ
2,500 –––2K5Eꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
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.
www.ohmite.com
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
109
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D25K3K0E
Potentiometer, Wire Wound, 25W, 3000ohm, 625V, 10% +/-Tol, -260,260ppm/Cel, ROHS COMPLIANT
OHMITE
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