Ohmite 40 Series Data Sheet

40 Series

‚‚

®

‚

Ohmicone
Axial Lead Wirewound Resistors
1% and 5% Tolerances Standard

SeriesSeries

WattageWattage

Series

Wattage

SeriesSeries

WattageWattage

4141

41 1.0 0.10-6.7K 0.437 /

4141
4242

42 2.0 0.10-8.7K 0.406 /

4242
4343

43 3.0 0.10-22K 0.593 /

4343
4545

45 5.0 0.10-81K 0.937 /

4545
4747

47 7.0 0.10-119K 1.280 /

4747
4040

40 10.0 0.10-223K 1.642 /

4040

Non-Inductive versions available. Insert “N” beforeNon-Inductive versions available. Insert “N” before

Non-Inductive versions available. Insert “N” before

Non-Inductive versions available. Insert “N” beforeNon-Inductive versions available. Insert “N” before
tolerance code. tolerance code.

tolerance code.

tolerance code. tolerance code.

‚‚

Silicone-Ceramic Conformal

1.5 /

38.1

OhmsOhms

Ohms

OhmsOhms

Example Example

Example

Example Example

- 42NJ27R- 42NJ27R

- 42NJ27R

- 42NJ27R- 42NJ27R

LD

Dimensions (in. / Dimensions (in. /

Dimensions (in. /

Dimensions (in. / Dimensions (in. /

LengthLength

Length

LengthLength

11.1

10.3

15.1

23.8

32.5

41.7

mmmm

mm

mmmm

Diam.Diam.

Diam.

Diam.Diam.

0.125 /

0.219 /

0.218 /

0.343 /

0.343 /

0.406 /

))

)

))

3.2

5.6

5.5

8.7

8.7

10.3

VoltageVoltage

Voltage

VoltageVoltage

150 24
100 20
200 20
460 18
670 18

1000 18

Lead ga.Lead ga.

Lead ga.

Lead ga.Lead ga.

Ohmite 40 Series resistors are
the most economical conformal
silicone-ceramic coated
resistors offered. These all­welded 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.

Units with 1% and 5%
tolerances are identical in
construction and electrical
specifications. Durable but
economical 40 Series resistors
exceed industry requirements
for quality.

FEATURES

• Economical

• Applications include commercial,

industrial and communications
equipment

• Stability under high temperature

conditions

• All-welded construction

• CECC sizes available

SPECIFICATIONS

Material

Coating: Conformal silicone-

ceramic.

Core: Ceramic.
Terminals: Solder-coated copper

clad axial lead.

Derating

Linearly from

100% @ +25°C to
0% @ +275°C.

Electrical

Tolerance: ±5% (J type), ±1% (F

type) (other tolerances 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:

Under 1 ohm: ±90 ppm/°C
1W to 9.99 ohms: ±50 ppm/°C
10 ohms and over: ±20 ppm/°C

STOCK PART NUMBERS FOR STANDARD RESISTANCE VALUES

Wattage and ToleranceWattage and Tolerance

Wattage and Tolerance

Wattage and ToleranceWattage and Tolerance

1% Tolerance 5% Tolerance

1 1

1 1

3 3

3 3

5 5

5 5

1 1

1 1

2 2

2 2

3 3

3 3

5 5

1

3

5

1

10 10

10 10

––––––

––––––

–––

43F

––––––

––––––

–––

45F

10

––––––

––––––

–––

40F

––––––

––––––

–––

41J

Part No.Part No.

Part No.

Part No.Part No.

➡➡

Prefix

➡

➡➡

––––––

––––––

–––

➡

➡

Suffix

Ohmic valueOhmic value

Ohmic valueOhmic value

Ohmic value

0.1 –––R10 ✔ ✙✙✙✙✙✙✙✙

0.15 –––R15 ✔✔✙✔✔✔✔✔✔

0.2 –––R20 ✔ ✙✙✔✔✙✔✙✔

0.25 –––R25 ✔✔✔

0.3 –––R30 ✔✔✔✔✔✔✙✔✔

0.33 –––R33 ✔✔✔

0.4 –––R40 ✔✔✔✔✔✔✔✔

0.5 –––R50 ✔ ✙✙✔✔✔✙✔✔

0.75 –––R75 ✔✜✔✔✙✔✔✔✔
1 –––1R0 ✙ ✔✔✔✔✔✙✔✔

1.5 –––1R5 ✔✔✔✔✔✔✔✔✔
2 –––2R0 ✔✔✔✔✔✔✔✔✔

2.2 –––2R2 ✔✔✔✔✔✔✔✔✔
3 –––3R0 ✔✔✔✜✔✔✔✔✔
4 –––4R0 ✔✔✔✔✔✔✔✔✔
5 –––5R0 ✔✔✔✔✔✔✔✙✔

7.5 –––7R5 ✔✔✔✔✜✔✔✔✔
10 –––10R ✔✔✔✔✔✔✔✙✙
12 –––12R ✜✔✜✔✔✔✔✔✔
15 –––15R ✔✔✙✜✔✜✔✔✙
18 –––18R ✜✔✜✜✜✜✔✔✔
20 –––20R ✔✔✔✔✜✔✔✔✔
22 –––22R ✔✔✔✜✔✔✔✔✔
25 –––25R ✔✔✔✜✜✔✔✔✔
27 –––27R ✜✔✔✔✜✔✔✔✔
30 –––30R ✔✔✔✔✜✔✜✔✔
33 –––33R ✔✔✜✔✜✔✔✔✔
35 –––35R ✔✜✔✔✔✔✜✔✜
39 –––39R ✔✔✜✜✜✔✔✔✜
40 –––40R ✔✔✔✔✜✜✜✔✔
47 –––47R ✔✔✜✜✔✔✔✔✔
50 –––50R ✔✔✔✔✔✔✔✙✔
56 –––56R ✔✔✜✔✔✔✔✔✔
62 –––62R ✔✔✔✔✜✔✜✔✔

41F

2

––––––

––––––

–––

42J

3

––––––

––––––

–––

43J

5 5

5

––––––

––––––

–––

45J

1010

1010

10

––––––

––––––

–––

40J

Wattage and ToleranceWattage and Tolerance

Wattage and Tolerance

Wattage and ToleranceWattage and Tolerance

1% Tolerance 5% Tolerance

1 1

1 1

3 3

3 3

5 5

5 5

1 1

1 1

2 2

2 2

3 3

3 3

5 5

1

3

5

1

10 10

10 10

––––––

––––––

–––

43F

––––––

––––––

–––

45F

10

––––––

––––––

–––

40F

––––––

––––––

–––

41J

Part No.Part No.

Part No.

Part No.Part No.

➡➡

Prefix

➡

➡➡

––––––

––––––

–––

➡

Suffix

Ohmic valueOhmic value

Ohmic valueOhmic value

Ohmic value
68 –––68R ✔✔✔✔✔✔✙✔✜
75 –––75R ✔✔✜✔✔✔✔✔✔

82 –––82R ✜ ✙ ✔✔✔✔✔✔✜
100 –––100 ✔✔✔✔✔✔✔✔✔
120 –––120 ✜✔✔✔✜✔✔✔✜
125 –––125 ✔✜✜✔✔✜✙✔✔
150 –––150 ✔✔✔✜✔✔✔✙✔
180 –––180 ✔✔✜✔✜✔✔✔✜
200 –––200 ✔✔✔✔✔✔✔✔✔
220 –––220 ✔✔✜✜✔✜✔✔✔
225 –––225 ✜✜✜✔✜✜✜✔✜
250 –––250 ✔✔✔✔✔✔✔✔✔
270 –––270 ✔✔✜✔✔✔✜✔✔
300 –––300 ✔✜✔✔✔✔✔✔✔
330 –––330 ✔✜✜✜✜✔✔✔✔
350 –––350 ✜✔✜✔✜✜✔✔✜
390 –––390 ✜✔✜✜✔✔✔✔✔
400 –––400 ✔✔✔✜✔✜✔✔✔
450 –––450 ✜✔✔✜✜✜✜✜✜
470 –––470 ✙ ✔✔✜✔✔✔✔✜
500 –––500 ✔✔✔✔✜✔✔✔✜
560 –––560 ✔✔✔✔✙✜✜✔✔
600 –––600 ✔✔✔✔✜✜✔✔✔
680 –––680 ✔✔✜✔✔✔✔✔✜
750 –––750 ✔✔✔✔✔✜✔✔✜
800 –––800 ✔✔✔✔✜✜✔✜✜
820 –––820 ✔✔✔✜✔✔✔✙✜
900 –––900 ✔✔✜✜✜✜✔✔✜

1,000 –––1K0 ✔✔✔✔✙✔✔✔✔
1,100 –––1K1 ✜✜✔✔✜✔✜✔✜
1,200 –––1K2 ✔✜✔✔✜✜✔✔✔
1,500 –––1K5 ✔✔✔✜✔✔✔✜✔
1,800 –––1K8 ✔✜✜✔✔✜✔✔✜
2,000 –––2K0 ✔✔✔✔✜✜✔✔✔

41F

2

––––––

––––––

–––

42J

3

––––––

––––––

–––

43J

5 5

5

––––––

––––––

–––

45J

Wattage and ToleranceWattage and Tolerance

Wattage and Tolerance

Wattage and ToleranceWattage and Tolerance

1% Tolerance 5% Tolerance

1 1

1 1

3 3

3 3

5 5

5 5

1 1

1 1

2 2

1

3

––––––

––––––

–––

41F

––––––

––––––

–––

43F

5

––––––

––––––

–––

45F

1010

1010

10

––––––

––––––

–––

40J

Part No.Part No.

Part No.

Part No.Part No.

➡➡

Prefix

➡

➡➡
➡

Suffix

Ohmic valueOhmic value

Ohmic valueOhmic value

Ohmic value
2,200 –––2K2 ✔✔✔✔✜✜✔✔✔
2,500 –––2K5 ✔✔✔✔✔✜✔✔✔
2,700 –––2K7 ✜✜✔✔✜✜✔✔✜
3,000 –––3K0 ✔✔✔✔✜✔✔✔✔
3,300 –––3K3 ✜✜✜ ✔✔✜
3,500 –––3K5 ✔✔✜ ✜✔✜
3,900 –––3K9 ✔✔✔ ✔✔✔
4,000 –––4K0 ✔✜✔ ✜✔✜
4,500 –––4K5 ✜✜✔ ✜✔✜
4,700 –––4K7 ✔✔✜ ✜✔✜
5,000 –––5K0 ✔✔✔ ✔✔✔
6,000 –––6K0 ✜✔✜ ✔✔✜
6,800 –––6K8 ✔✔✜ ✔✔✜
7,000 –––7K0 ✔✔✜ ✜✜✜
7,500 –––7K5 ✔✔✜ ✔✔✔
8,000 –––8K0 ✔✜✔ ✜✔✜
9,000 –––9K0 ✜✔✜ ✜✜✜

10,000 –––10K ✔✔✔ ✔✔✔
12,000 –––12K ✜✔
13,000 –––13K ✔✜
15,000 –––15K ✔✔
17,000 –––17K ✔✜
20,000 –––20K ✔✔
22,000 –––22K ✔✔
25,000 –––25K ✔✔
30,000 –––30K ✙ ✜
33,000 –––33K ✔
35,000 –––35K ✜
40,000 –––40K ✔
50,000 –––50K ✔

2 2

1

2

10 10

10 10

10

––––––

––––––

––––––

––––––

––––––

––––––

–––

–––

–––

40F

41J

42J

Shaded values
involve very fine
resistance wire
and should not
be used in
critical
applications
without burn-in
and/or thermal
cycling.

✙ = Most popular stock values

✔ = Stock values
✜ = Non-stock values subject to

minimum handling charge per item

3 3

3 3

3

––––––

––––––

–––

43J

5 5

5 5

5

––––––

––––––

–––

45J

1010

1010

10

––––––

––––––

–––

40J

12

Ohmite Manufacturing Company 3601 Howard St., Skokie, IL 60076 • Tel. [phone] • Fax [phone] • Website: www.ohmite.com • E-mail: [e-mail]