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 siliconeceramic. Core: Ceramic. Terminals: Solder-coated copper clad axial. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu
Ohmicone® Silicone-Ceramic Conformal Axial Term. Wirewound, 1% and 5% Tol. Std.
1.5 in. / 38.1mm L D
40 Series
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 ordering info 25°C free air rating (other wattages available). 40 Series Ohmicone® Non-Inductive Overload: Under 5 watts: Winding Silicone Ceramic 5 times rated wattage for 5 Optional (blank Conformal Axial RoHS = std. winding) Term. Wirewound Compliant seconds. 5 watts and over: 10 times rated wattage for 5 seconds. Wattage Tolerance Resistance Value Temperature coefficient: R10 = 0.10Ω 1 = 1W F= 1% Under 1Ω: ±90 ppm/°C J = 5% 1R0 = 1.0Ω 2 1Ω to 9.99Ω: ±50 ppm/°C 10R = 10.0Ω 3 250 = 250Ω 5 10Ω and over: ±20 1K0 = 1,000Ω 7 ppm/°C 4K5 = 4,500Ω 0 = 10W
Series Wattage Ohms 41 1.0 0.10-6K 42 2.0 0.10-8K 43 3.0 0.10-20K 45 5.0 0.10-70K 47 7.0 0.10-80K 40 10.0 0.10-150K
Dimensions (in. / mm) Length Diam. 0.437 / 11.1 0.125 / 3.2 0.406 / 10.3 0.219 / 5.6 0.593 / 15.1 0.218 / 5.5 0.937 / 23.8 0.343 / 8.7 1.280 / 32.5 0.343 / 8.7 1.642 / 41.7 0.406 / 10.3
Voltage 150 100 200 460 670 1000
Lead ga. 24 20 20 18 18 18
Non-Inductive versions available. Insert “N” before tolerance code. Example: 42NJ27R
41NJR10E
50K = 50,000Ω
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 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.
Wattage and Tolerance 1% Tolerance 5% Tolerance Ohmic value 40J––– 10 40F––– 10 part no. Prefix Suffix –––2K2 –––2K5 –––2K7 –––3K0 –––3K3 –––3K5 –––3K9 –––4K0 –––4K5 –––4K7 –––5K0 –––6K0 –––6K8 –––7K0 –––7K5 –––8K0 –––9K0 –––10K –––12K –––13K –––15K –––17K –––20K –––22K –––25K –––30K –––33K –––35K –––40K –––50K 40J––– 10 41F––– 1 43F––– 3 45F––– 5 41J––– 1 42J––– 2 43J––– 3 45J––– 5
S ta n d a r d pa rt n u m b e r S f o r 4 0 S e r i e S
Wattage and Tolerance 1% Tolerance 5% Tolerance Ohmic value Ohmic value 40F––– 10 40J––– 10 41F––– 1 43F––– 3 45F––– 5 41J––– 1 42J––– 2 43J––– 3 45J––– 5 part no. Prefix Suffix –––R10 –––R15 –––R20 –––R25 –––R30 –––R33 –––R40 –––R50 –––R75 –––1R0 –––1R5 –––2R0 –––2R2 –––3R0 –––4R0 –––5R0 –––7R5 –––10R –––12R –––15R –––18R –––20R –––22R –––25R –––27R –––30R –––33R –––35R –––39R –––40R –––47R –––50R –––56R –––62R part no. Prefix Suffix –––68R –––75R –––82R –––100 –––120 –––125 –––150 –––180 –––200 –––220 –––225 –––250 –––270 –––300 –––330 –––350 –––390 –––400 –––450 –––470 –––500 –––560 –––600 –––680 –––750 –––800 –––820 –––900 –––1K0 –––1K1 –––1K2 –––1K5 –––1K8 –––2K0 Wattage and Tolerance 1% Tolerance 5% Tolerance 40F––– 10 41F––– 1 43F––– 3 45F––– 5 41J––– 1 42J––– 2 43J––– 3 45J––– 5
0.1 0.15 0.2 0.25 0.3 0.33 0.4 0.5 0.75 1 1.5 2 2.2 3 4 5 7.5 10 12 15 18 20 22 25 27 30 33 35 39 40 47 50 56 62
68 75 82 100 120 125 150 180 200 220 225 250 270 300 330 350 390 400 450 470 500 560 600 680 750 800 820 900 1,000 1,100 1,200 1,500 1,800 2,000
2,200 2,500 2,700 3,000 3,300 3,500 3,900 4,000 4,500 4,700 5,000 6,000 6,800 7,000 7,500 8,000 9,000 10,000 12,000 13,000 15,000 17,000 20,000 22,000 25,000 30,000 33,000 35,000 40,000 50,000
Shaded values involve very fine resistance wire and should not be used in critical applications without burn-in and/or thermal cycling.
= Standard values = Non-standard values subject to minimum handling charge per item Check product availability at www.ohmite.com 21
Ohmite Mfg. Co. 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
