PRECISION WIREWOUND PRINTED CIRCUIT BOARD & RADIAL LEAD RESISTOR ISO-9001 Registered Welded Terminations Wire terminations made at top of resistor -Protects joints from solder bath damage -Body acts as heat sink providing additional termination protection PC, HR, 4000 SERIES MIL-R-93 (RB) & MIL-R-39005 (RBR) & COMMERCIAL STYLES Custom designs available Insulated stress relieved windings Optional lead materials Different lead spacing furnished on request * * * * * 0.100 to 0.600 watts Tolerance to 0.01% (25C) Non-inductive windings available TC's from 2 ppm/C to +6000 ppm/C Meets or exceeds all applicable MIL-R-93 & MIL-R-39005 ratings Miniature printed circuit resistors incorporate an uncommon number of production and design refinements to assure excellent resistance stability, close resistance tolerances, low TCR capabilities and high structural strength. To assure their high quality standards, premium grade selected wire is reverse pi wound with minimum stress on high temperature epoxy bobbins, permeated with a resilient inner cushion coat, and isolated from the external protective shell by a special dry air chamber. To promote additional resistance stability and accurate initial calibrations all resistors are subjected to an extensive accelerated aging program. Weldable and/ or solderable leads (a choice of lead material is available) are firmly anchored and bonded inside the bobbin for maximum structural strength. All resistor markings are impervious to printed circuit board cleaning solvents and lead spacing is sufficiently well controlled for automatic insertion on standard grid boards. SPECIAL SCREENING / ACCEPTANCE TEST: Special tests can be performed on a 100% or sample basis, to meet individual customer requirements. Some of the available non-destructive test include: -Short Time Overload -Thermal Shock -Temperature Coefficient of Resistance -Radiographic Inspection Each of these tests is designed to detect a spectrum of potential resistor defects. Consult the factory for recomendations and a quotation on special screening or acceptance tests to meet your needs. ELECTRICAL SPECIFICATIONS: IRC/Shallcross Style** HR-8 4060/PC8 4065 4061 4067 HR 340 HR 341 MIL-R-93/ MIL-R-39005 Style RBR71 RB71 RB70 ----RBR81 RBR80 Wattage MIL 125C 0.125 0.125 0.250 ----0.100 Comm* 85C 0.100 0.250 0.333 0.250 0.400 Resistance (ohms) MIL Comm* Max Max 150K 500K 100K 1.5M 301K 800K --3M --250K 120K Maximum Working Voltage 300 300 150 300 300 300 150 *Commercial ratings may be applied at 125C provided 175C max. operation temperature is permissible. **Available as High Reliability styles with complete documentation. WIREWOUND AND FILM TECHNOLOGIES DIVISION 736 Greenway Road * Boone, North Carolina 28607-1860 * Tel: 828-264-8861 * Fax: 828-264-8866 * www.irctt.com 1 ISO-9001 Registered PC, HR, 4000 SERIES DIMENSIONS (Inches and (mm)): IRC Shallcross Style A Inches (mm) 0.032 (0.8) 0.312 (7.9) 0.312 (7.9) 0.500 (12.7) 0.375 (9.5) 0.437 (11.1) 0.500 (12.7) 0.325 (9.3) C B D E Inches (mm) Inches (mm) Inches (mm) Inches (mm) Minimum 0.025 (0.6) 0.002 (0.05) 0.010 (0.25) 1.0 (25.4) 0.250 (6.3) 0.025 (0.6) 0.200 (5.0) HR-8 1.0 (25.4) 0.250 (6.3) 0.025 (0.6) 0.200 (5.0) 4060/PC-8 1.0 (25.4) 0.375 (9.5) 0.032 (0.8) 0.200 (5.0) 4065 1.0 (25.4) 0.250 (6.3) 0.025 (0.6) 0.200 (5.0) 4061 1.5 (38.0) 0.437 (11.1) 0.032 (0.8) 0.300 (7.8) 4067 1.0 (25.4) 0.160 (4.0) 0.020 (0.5) 0.406 (10.3) HR 340* 1.0 (25.4) 0.160 (4.0) 0.020 (0.5) 0.225 (5.7) HR341* Standard Temperature Coefficient 10ppm/C 100 up, 15ppm/C 10 to 100, 30ppm/C 1 to 10, 90ppm/C below 1. Standard Lead Material - Tinned copper weld NOTE: Optional temperature coefficients available. Consult factory for details. Fig. I (Round) *Fig. II (Radial) E Grid Spacing B Diameter A Length A Length C Lead Length E Grid Spacing D B Diameter C Lead Length HOW TO ORDER Sample Part No.: RB71 W E 10001 B Style (Use commercial style if no MIL number) Characteristic & Terminal RB product: C = Solderable, W = Weldable RBR product: L=Solderable, U=Weldable Resistance Temperature Characteristic Resistance Tolerance 2 For commercial equivalents: Style - Resistance - Tolerance - TCR WIREWOUND AND FILM TECHNOLOGIES DIVISION 736 Greenway Road * Boone, North Carolina 28607-1860 * Tel: 828-264-8861 * Fax: 828-264-8866 * www.irctt.com