RB / RBR, HR / 4000, PC Series
Radial Lead Precision
Wirewound Resistors
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0.1 to 0.6 watts
Tolerance to ±.01%
0.1 ohm to 3 meg ohms
Approved to M, P, & R levels
TCR’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 miniumum stress on high
temperature epoxy bobbins, permeated with a resilient inner cushion coat, and isolated from the external protection
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 nondestructive tests include:
• Vibration
• Temperature Coefficient of Resistance
• Radiographic Inspection
• Short Time Overload
• Thermal Shock
• Mechanical Shock
Each of these tests is designed to detect a spectrum of potential resistor defects. Consult the factory for recommendations and a
quotation on special screening or acceptance tests to meet your needs.
TCR and Temperature Data
Style
Absolute TCR (ppm/°C)
0.1 - 0.9
±90
1.0 - 9.9
±30
10 - 99.9
±15
100 - 12M
All
Styles
Resistance Range (Ω)
Operating Temperature Range (°C)
±10
-65 to +145
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
A subsidiary of
TT electronics plc
RB / RBR, HR / 4000, PC Series Issue August 2011 Sheet 1 of 3
