Datasheet > 2NCDR741E

2NCDR741E

更新时间： 2024-11-03 05:31:47

品牌	Logo	应用领域
OHMITE		/
页数	文件大小	规格书
1页	103K
描述
Fixed Resistor, Wire Wound, 2W, 0.741ohm, 300V, 0.5% +/-Tol, -200,200ppm/Cel,

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数据手册

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2NCDR741E 数据手册

Ohmite’s Axiohm resistors are

Centohm coated for maximum

reliability. These all-welded

units are characterized by their

low temperature coefficients

and resistance to thermal

shock, making them ideal for

a wide range of electrical and

electronic applications.

F ꢀ A T ꢁ ꢂ ꢀ s

• Welded construction

Axiohm Series

• Inorganic and non-hygroscopic,

Centohm coating seals and pro-

tects the resistance wire.

• Exceeds MIL-R-26 moisture

requirements

• Centohm Resistors are designed

to meet and exceed performance

characteristics of vitreous enam-

el resistors.

Centohm Coated

Axial Terminal Wirewound

1.5 in. / 38.1mm

• Centohm is more cost effective

than vitreous enamel.

• ±5% resistance tolerance

ꢂeꢅiꢅtance

ꢂange

(Ω)

Dielectric

standard With- Maximum

ꢂeꢅiꢅtance ꢅtanding Voltage

D max.

clean term.

to clean

Watt

Wire

Gauge

(dia.)

O p T ꢃ O ꢄ s

Noninductive: This specially

designed version is wound using

the Ayrton-Perry method.

Resistance Tolerances: Options

include 5%, 1%, 0.5%, 0.25%,

and 0.1% resistors.

Terminal Sizes: Alternate terminal

diameters available.

Tape and Reel: Resistors taped

for automatic insertion. Contact

Ohmite for size, quantity and

ordering information

ꢂating

Form Min. Max. Tolerance Voltage ꢂating .ꢆ063”±±1.600

10C

.ꢆ6ꢇ3”617900

term. in.”00

0.1

5ꢀ

500

100 0.313 .031 / 7.95 .79 0.094 / 2.39 #24 (.020”) 0.406 / 10.31

300

450

600

800

0.1 10K

0.1 20K

0.1 30K

0.1 40K

0.1 50K

0.1 90K

0.375

0.5

0.688

0.938

9.53

12.7

17.48

23.83

25.4

0.219 / 5.56 #20 (.032”) 0.469 / 11.91

0.219 / 5.56 #20 (.032”) 0.594 / 15.09

0.219 / 5.56 #20 (.032”) 0.813 / 20.65

0.219 / 5.56 #20 (.032”) 1.063 / 27.00

0.313 / 7.95 #20 (.032”) 1.125 / 28.58

0.313 / 7.95 #20 (.032”) 1.688 / 42.67

875

1600

1.563

39.7

Terminals: Tinned Copper weld.

RoHS solder composition is

96% Sn, 3.5% Ag, 0.5% Cu

Derating

Linearly from

100% @ +25°C to

0% @ +350°C.

Electrical

Tolerance: ±5% (Std) down to

0.1% available.

Power rating: Based on 25°C

free air rating (other wattages

available).

Overload: Under 5 watts: 5 times

rated wattage for 5 seconds. 5

watts and over: 10 times rated

wattage for 5 seconds.

Temperature coefficient:

0 ±30ppm /°C above 10Ω

0 ±100ppm/°C 1 to 10Ω

0 ±200ppm/°C below 1Ω

s p ꢀ C ꢃ F ꢃ C A T ꢃ O ꢄ s

Material

Coating: Flameproof proprietary

Centohm

Core: Ceramic

Element: Copper-nickel alloy or

nickel-chrome alloy depending

on resistance value

End Cap: Stainless steel

P e r f O r m a n c e d ata

O r d e r i n g i n f O r m at i O n

Test

Maximum

±30ppm/°C above 10Ω

±100ppm/°C 1 to 10Ω

±200ppm/°C below 1Ω

Non-Inductive

Temperature Coefficient

Option (Add N)

E = RoHS compliant

Example:

Std 3 watt,

10K ± 5% = 3CJ10K

Thermal Shock

Short Time Overload

Dielectric

± (2% + .05Ω)∆R

± (0.1% + .05Ω)∆R

± (2% + .05Ω)∆R

± (3% + .05Ω)∆R

± (1% + .05Ω)∆R

� ꢀ ꢁ ꢂ ꢃ ꢄ ꢅ ꢆ

Low Temperature Storage

High Temperature Exposure

Moisture Resistance

Shock

Wattage

Tolerance

J = 5% (standard) use "K" for 1000

H = 3%

F = 1%

D = .5%

Q = .25%

B = .1%

Resistance (Ω)

Coating

"C" for

Centohm

multiplier; use "R"

for decimal point

Vibration

Load Life

Terminal Strength

∆R values are maximums based on MIL-R-26 testing requirements at 350°C.

Ohmite Mfg. Co.

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

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