20 Series Vitreous Enamel Conformal Axial Terminal Wirewound, 5% Tolerance Std. FeatureS • Rugged vitreous enamel coating withstands high The 20 Series axial terminal resistors are both humidity and temperature cycling. durable and economical. They have all the electrical • Durable construction, recommended for industrial attributes of the more expensive 90 Series resistors, applications where reliability is paramount. including all-welded construction. They offer the durability of a lead free conformal • All-welded construction. vitreous enamel coating and are ideal for computer, • Flame resistant lead free vitreous enamel coating. communications and industrial applications in which • RoHS compliant; Add “E” suffix to part number to cost, quality, and reliability are key considerations. specify. SerieS SpeCiFiCationS Series Wattage Ohms Max. Voltage* 21 1 1.0-3.0K 75 22 2 1.0-3.0K 65 23 3 0.1-10K 135 25 5 0.1-28K 330 27 7 0.1-25K 450 20 10 0.1-100K 720 12.5 watt size available on special order *Maximum Voltage is based on Ohm’s Law [V=√(P*R)] as limited by the resis- tance value of specified product CharaCteriStiCS Coating Conformal lead free vitreous enamel Core Ceramic. Terminals Solder-coated axial. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu Derating Linearly from 100% @ +25°C to 0% @ +350°C Tolerance ±5% standard; other tolerances available Power rating Based on 25°C free air rating (other wattages available) Overload Under 7 watts: 5 times rated wattage for 5 seconds; 7 watts and over: 10 times rated wattage for 5 seconds Temperature coefficient 1 to 9.99 ohms: ±50 ppm/°C; 10 ohms and over: ±30 ppm/°C DimenSionS (in./mm max.) Series Wattage Length* (max.) Diam.* (max.) Lead ga. 21 1 0.421 / 10.7 0.156 / 4.0 24 1.5 in. / 38.1mm L D 22 2 0.421 / 10.7 0.219 / 5.6 20 23 3 0.515 / 13.1 0.220 / 5.6 20 25 5 1.015 / 25.8 0.276 / 7.0 20 27 7 1.265 / 32.1 0.394 / 10.0 20 20 10 1.859 / 47.2 0.394 / 10.0 20 *For units below 1Ω, add 15% to body diameter, 10% to body length. (continued) 82 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

20 Series Vitreous Enamel Conformal Axial Terminal Wirewound, 5% Tolerance Std. orDerinG inFormation Standard part numbers Wattage Wattage Wattage Ohmic value PPSaruerffftii xxN o. 21J ––– 1 22J ––– 2 23J ––– 3 25J ––– 5 27J ––– 7 20J ––– 10 Ohmic value PPSaruerffftii xxN o. 21J ––– 1 22J ––– 2 23J ––– 3 25J ––– 5 27J ––– 7 20J ––– 10 Ohmic value PPSaruerffftii xxN o. 21J ––– 1 22J ––– 2 23J ––– 3 25J ––– 5 27J ––– 7 20J ––– 10 0.10 ––– R10    62 –––62R       1,800 –––1K8       0.13 ––– R13    68 –––68R       2,000 –––2K0       0.15 ––– R15    75 –––75R       2,200 –––2K2       0.20 ––– R20    82 –––82R       2,500 –––2K5       0.25 ––– R25    100 –––100       2,700 –––2K7       0.30 ––– R30    120 –––120       3,000 –––3K0       0.33 ––– R33    125 –––125       3,300 –––3K3     0.50 ––– R50    150 –––150       3,500 –––3K5     0.75 ––– R75    180 –––180       3,900 –––3K9     1 ––– 1R0       200 –––200       4,000 –––4K0     1.5 –––1R5       220 –––220       4,500 –––4K5     2 –––2R0       225 –––225       4,700 –––4K7     2.2 –––2R2       250 –––250       5,000 –––5K0     3 –––3R0       270 –––270       6,000 –––6K0     4 –––4R0       300 –––300       6,800 –––6K8     5 –––5R0       330 –––330       7,000 –––7K0     7.5 –––7R5       350 –––350       7,500 –––7K5     10 –––10R       390 –––390       8,000 –––8K0     12 –––12R       400 –––400       9,000 –––9K0     15 –––15R       450 –––450       10,000 –––10K     18 –––18R       470 –––470       12,000 –––12K    20 –––20R       500 –––500       13,000 –––13K   22 –––22R       560 –––560       15,000 –––15K    25 –––25R       600 –––600       17,000 –––17K   27 –––27R       680 –––680       20,000 –––20K    30 –––30R       750 –––750       22,000 –––22K    33 –––33R       800 –––800       25,000 –––25K    35 –––35R       820 –––820       30,000 –––30K  39 –––39R       900 –––900       33,000 –––33K  40 –––40R       1,000 –––1K0       35,000 –––35K  47 –––47R       1,100 –––1K1       40,000 –––40K  50 –––50R       1,200 –––1K2       50,000 –––50K  56 –––56R       1,500 –––1K5        = Standard values Shaded values involve very fine resistance wire and should not be used in critical applications without burn-in and/or thermal cycling.  = Non-standard values subject to minimum handling charge per item RoHS Compliant 21JR10E 20 Series Wattage Tolerance Resistance Value Vitreous Enamel 1= 1W J = 5% R10= 0.10Ω Axial Lead 2 1R0= 1.0Ω Wirewound 3 10R=10.0Ω 5 250= 250Ω 7 1K0= 1,000Ω 0=10W 4K5= 4,500Ω 50K=50,000Ω 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 83

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: O hmite: 27J50R 27J10R 25J27R 25J47R 20J20K 20J4K0 25J25R 25J75R 25J15R 25J39R 25J33R 25J56R 25J30R 25J22R 25J68R 25J35R 20J22K 20J25K 25J82R 25J18R 25J10R 20J8K0 25J20R 25J12R 25J50R 25J220 25J225 25J2R0 20J35R 20J33R 20J50R 20J39R 20J30R 20J56R 20J75R 25J680 25J600 23J1K25 25J1K25 20J1K25 25J200 25J270 25J900 25J3R0 25J330 25J390 25J750 25J350 23J680 23J600 23J4R0 23J450 23J400 23J470 25J40R 23J10K 23J750 23J7R5 23J7K0 23J5K0 23J1K0 23J9K0 23J6K0 23J2K0 23J4K0 23J8K0 23J3K0 25J300 21J250 25J8K2 23J8K2 20J8K2 25J15K 25J12K 25J18K 25J250 25J450 25J150 25J120 25J125 25J1R0 25J180 25J100 25J1R5 25J10K 20J350 20J330 20J300 20J390 23J800 23J820 25J7R5 25J4K0 25J6K0 25J8K0 25J1K0 20J270 20J250 20J225 25J2K0