ISO-9001 Registered Fireproof high temperature ceramic case - stand offs optional GENERAL PURPOSE POWER WIREWOUND RESISTOR Alloy resistance wire on fiberglass substrate PW SERIES Inorganic fireproof encapsulant * 2 watts to 25 watts * 0.10 ohms to 30K ohms * 10% or 5% tolerance * TC's from 300 ppm/C to +5500 ppm/C Automatically clamped termination lead assembly Made in Barbados SPECIFICATIONS: IRC Type PW-2 PW-3 PW-5 PW-7 PW-10 PW-15 PW-18 PW-22 PW-25 Standard Temperature Coefficient Power Rating Standard 0.03%/C @ 25C Resistance 0.06%/C (watts) Range (ohms) over R range over R range 1.0 to 2.4K 2 0.15 to 2.4K 0.15 to 0.99 1.0 to 7.5K1.0 3 0.1 to 7.5K 0.1 to 0.99 to 8.5K 5 0.1 to 8.5K 0.1 to 0.99 1.0 to 18K 7 0.1 to 18K 0.1 to 0.99 1.0 to 30K 10 0.18 to 30K 0.18 to 0.99 1.0 to 30K 15 0.18 to 30K 0.18 to 0.99 1.0 to 22K 18 0.18 to 22K 0.18 to 0.99 1.5 to 12K 22 0.27 to 18K 0.27 to 1.3 1.5 to 10K 25 0.27 to 18K 0.27 to 1.3 Special Temperature Coefficients +0.55%/C over R range 0.1 to 30 0.1 to 86 0.1 to 68 0.1 to 150 0.1 to 240 0.1 to 240 0.1 to 200 0.15 to 360 0.15 to 300 +0.45%/C over R range 0.24 to 130 0.1 to 270 0.1 to 300 0.15 to 680 0.24 to 1100 0.24 to 1100 0.24 to 1100 0.36 to 1800 0.36 to 1200 +0.25%/C over R range 1.0 to 10 0.24 to 20 0.27 to 22 1.0 to 51 1.0 to 82 1.0 to 82 1.0 to 70 1.0 to 120 1.5 to 100 E0.03 (0.8) 0.31 (7.87) 0.38 (9.65) 0.41 (10.4) 0.47 (11.9) 0.47 (11.9) 0.63 (16.0) 0.63 (16.0) 0.63 (16.0) 0.63 (16.0) LL min. 1.44 (36.6) 1.44 (36.6) 1.50 (38.1) 1.50 (38.1) 1.50 (38.1) 1.50 (38.1) 1.50 (38.1) 1.50 (38.1) 1.50 (38.1) F (ref.) 0.063 0.063 0.063 0.125 0.125 0.125 0.125 0.125 0.125 Please note: When ordering the alternate configuration please add an 'A' after the part number. (i.e., PW-2A) PW DIMENSIONS (Inches and (mm)): IRC Type L0.03 (0.8) W0.03 (0.8) PW-2 0.69 (17.5) 0.25 (6.35) PW-3 0.88 (22.4) 0.31 (7.87) PW-5 0.88 (22.4) 0.38 (9.65) PW-7 1.39 (35.3) 0.38 (9.65) PW-10 1.88 (47.8) 0.38 (9.65) PW-15 1.88 (47.8) 0.50 (12.7) PW-18 1.88 (47.8) 0.50 (12.7) PW-22 2.50 (63.5) 0.50 (12.7) 0.50 (12.7) PW-25 2.50 (63.5) *Copper Clad Steel H0.03 (0.8) 0.25 (6.35) 0.31 (7.87) 0.34 (8.64) 0.34 (8.64) 0.34 (8.64) 0.50 (12.7) 0.50 (12.7) 0.50 (12.7) 0.50 (12.7) 0.125 max. Standard Configuration LL D Dia.0.002 0.032 (0.8) 0.036 (0.91) 0.036 (0.91) 0.036 (0.91) 0.036 (0.91) 0.036 (0.91) 0.036 (0.91) 0.040 (1.0)* 0.040 (1.0)* Alternate Configuration W L E H F D POWER DERATING: 25 40 PW-2 80 PW-3, 5, 7, 10 60 PW-15, 18, 22, 25 40 20 0 HOW TO ORDER: PW-22, 25 300 Temperature Rise (C) Percent of Rated Load 100 TEMPERATURE RISE: 85 50 100 150 Ambient Temperature (C) 200 250 PW 18 12K 10% PW-15,18 250 PW-10 PW-7 200 PW-5 PW-3 150 IRC Type Power 18 = 18watts 100 Resistance Value (standard EIA values) 50 0 Sample Part No.: 0 20 40 60 80 Percent of Rated Load 100 120 Tolerance 10 or 5% standard WIRE AND FILM TECHNOLOGIES 736 Greenway Road * PO Box 1860 * Boone, North Carolina 28607-1860 * Tel: 704-264-8861 * Fax: 704-264-8865 1 ISO-9001 Registered GENERAL PURPOSE POWER WIREWOUND RESISTOR Tinned steel Allow resistance wire on fiberglass substrate Steatite ceramic case PW SERIES 20 watts to 50 watts 0.10 ohms to 2.0K ohms 10% or 5% tolerance Customs SPECIFICATIONS: TEMPERATURE RISE at 25C: Resistance Range (ohms) 0.1 - 2.0K 0.5 - 1.2K 0.65 - 1.5K 0.08 - 1.8K POWER DERATING: (without bracket) 100 PW-20E, PW-30, PW-40, PW-50E without Bracket 300 PW-50E PW-20E Temperature Rise (C) IRC Type PW-20E PW-30 PW-40 PW-50E Power at 25C (watts) 20 30 40 50 Percent of Rated Load * * * * 200 PW-40 PW-30 100 80 60 40 20 0 -Flameproof inorganic construction 0 -EIA RS-344, Insulated fixed 25 50 75 100 0 50 125 100 150 Percent of Rated Load wirewound resistors With Bracket: PW-30 Increased to 40 watts PW-40 Increased to 50 watts PW-50 Increased to 60 watts -1000 hour load life at 25C: 5% max. -Moisture no load 240 hours: 2% max. -Temperature cycling (5 cyc.): 5% max. DIMENSIONS (Inches): PW-20E Wirewound 5/32 Dia. Thru (2) PW-30, 40 and 50E Wirewound 0.250 (Typ.) A A 0.0320.0025 0.1570.020 0.0320.0025 0.2820.020 5/32 Dia. Thru (2) 0.750.030 0.50.030 0.25 B 0.750.030 0.875 0.50.030 PW-20E Alternate Terminal Configuration 0.020" Tin coated Steel IRC Type PW-20E PW-30 PW-40 PW-50E 2 200 Ambient Temperature (C) 0.375 0.75 B 7/32 Dia. 0.205 or 0.1870.005 0.250.031 0.0690.005 0.1250.015 0.200 (Typ.) 0.1350.015 Printed Circuit Terminal A (0.030) 1.875 2.00 2.45 3.075 B (0.060) 2.50 2.55 3.00 3.625 WIRE AND FILM TECHNOLOGIES 736 Greenway Road * PO Box 1860 * Boone, North Carolina 28607-1860 * Tel: 704-264-8861 * Fax: 704-264-8865 250 ISO-9001 Registered Special PW Power Wireounds PW-30E DIMENSIONS (Inches): *Meniscus allowable to the termination edge 0.2500.020 0.2050.020 1.1060.050 0.9000.050 0.250 Terminal (0.032 Thk.) 0.3750.040 0.205 Terminal (0.020 Thk.) 0.709 0.030 0.062 Rad. (2) 0.2730.010 Dia. 0.7500.05 0.2900.030 0.125 Rad. (Ref.) 0.1550.005 0.6850.060 1.0000.040 0.5000.030 0.020 3.0000.040 2.3750.040 0.060 Dia. (2) 0.020 0.1870.020 0.3130.050 *See Meniscus Note 0.9000.050 0.5000.040 PW-15E DIMENSIONS (Inches): 0.020 0.5000.030 0.250 min. 2.0000.040 1.4100.040 0.1870.010 0.060 Dia. (2) 1.050 min. 0.8400.040 0.5000.030 WIRE AND FILM TECHNOLOGIES 736 Greenway Road * PO Box 1860 * Boone, North Carolina 28607-1860 * Tel: 704-264-8861 * Fax: 704-264-8865 3