30666544/12/28 00:00:00.000 - HARTING TECHNOLOGY GROUP

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

26 Ohmite Mfg. Co.

Standard part numberS for 40 SerieS

40 Series

Ohmicone® Silicone-Ceramic Conformal

Axial Term. Wirewound, 1% and 5% Tol. Std.

FEATURES

• Economical

• Applications include commercial,

industrial and communications

equipment

• Stability under high temperature

conditions

• All-welded construction

• RoHS compliant; add “E” suffix

to part number to specify.

SPECIFICATIONS

Material

Coating: Conformal silicone-

ceramic.

Core: Ceramic.

Terminals: Solder-coated copper

clad axial. RoHS solder com-

position is 96% Sn, 3.5% Ag,

0.5% Cu

Derating

Linearly from

100% @ +25°C to

0% @ +275°C.

Electrical

Tolerance: ±5% (J type), ±1%

(F type) (other tolerances avail-

able).

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 1Ω: ±90 ppm/°C

1Ω to 9.99Ω: ±50 ppm/°C

10Ω and over: ±20

ppm/°C

Dimensions (in./mm max.) Lead

Series Wattage Ohms Length Diam. Voltage ga.

41 1.0 0.10-6K 0.437 / 11.1 0.125 / 3.2 150 24

42 2.0 0.10-8K 0.406 / 10.3 0.219 / 5.6 100 20

43 3.0 0.10-20K 0.593 / 15.1 0.219 / 5.6 200 20

45 5.0 0.10-70K 0.937 / 23.8 0.343 / 8.7 460 18

47 7.0 0.10-80K 1.280 / 32.5 0.343 / 8.7 670 18

40 10.0 0.10-150K 1.900 / 48.3 0.406 / 10.3 1000 18

Non-Inductive versions available. Insert “N” before tolerance code. Example: 42NJ27R

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         

 = Standard values

 = Non-standard values subject to mini-

mum handling charge per item

Shaded values

involve very fine

resistance wire

and should not

be used in criti-

cal applications

without burn-in

and/or thermal

cycling.

1.5 in. / 38.1mm

Ohmic value

41F––– 1

43F––– 3

45F––– 5

40F––– 10

41J––– 1

42J––– 2

43J––– 3

45J––– 5

40J––– 10

1% Tolerance 5% Tolerance

Wattage and Tolerance

Part No.

Prefix 

Suffix



Ohmic value

41F––– 1

43F––– 3

45F––– 5

40F––– 10

41J––– 1

42J––– 2

43J––– 3

45J––– 5

40J––– 10

1% Tolerance 5% Tolerance

Wattage and Tolerance

Part No.

Prefix 

Suffix



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 

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         

Ohmic value

41F––– 1

43F––– 3

45F––– 5

40F––– 10

41J––– 1

42J––– 2

43J––– 3

45J––– 5

40J––– 10

1% Tolerance 5% Tolerance

Wattage and Tolerance

Part No.

Prefix 

Suffix



ordering info

41NJR10E

40 Series

Ohmicone®

Silicone Ceramic

Conformal Axial

Term. Wirewound

Resistance Value

R10 =0.10Ω

1R0 =1.0Ω

10R =10.0Ω

250 =250Ω

1K0 =1,000Ω

4K5 =4,500Ω

50K =50,000Ω

Tolerance

F= 1%

J= 5%

RoHS

Compliant

Wattage

1= 1W

0=10W

Non-Inductive

Winding

Optional (blank

= std. winding)

Ohmite 40 Series resistors are the most economical conformal

silicone-ceramic coated resistors offered. These all-welded units

are characterized by their low temperature coefficients and resis-

tance 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.

Check product availability at www.ohmite.com