RB / RBR, HR / 4000, PC Series
Radial Lead Precision
Wirewound Resistors
•
•
•
•
•
•
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 non-
destructive tests include:
• Short Time Overload
• Thermal Shock
• Mechanical Shock
• Vibration
• Temperature Coefficient of Resistance
• Radiographic Inspection
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
Resistance Range (Ω)
0.1 - 0.9
All
Styles
1.0 - 9.9
10 - 99.9
100 - 12M
Absolute TCR (ppm/°C)
±90
±30
±15
±10
-65 to +145
Operating Temperature Range (°C)
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.
A subsidiary of
TT electronics plc
RB / RBR, HR / 4000, PC Series Issue November 2010 Sheet 1 of 3
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
RB / RBR, HR / 4000, PC Series
Radial Lead Precision
Wirewound Resistors
Electrical Specifications
Wattage
IRC /
Shallcross Style
HR-8
4060 / PC8
4065
4061
HR 340
HR 341
MIL-R-93 /
MIL-R-39005 Style
RBR 71
RB 71
RB 70
---
RBR 81*
RBR 80**
MIL
125°C
0.125
0.125
0.25
---
0.100
0.100
0.25
0.33
0.25
Comm.
85°C
Min.
0.1
0.1
0.1
---
10
10
Resistance (ohms)
MIL
Max.
150 K
100 K
301 K
---
250 K
120 K
500 K
1.5 M
800 K
Comm.
Max.
300
300
150
300
300
150
Maximum
Working Voltage
* Discontinued by DSCC, replaced with 09008
** Approved to M and P level only
Physical Dimensions
(inches and (mm))
:
IRC /
Shallcross Style
HR-8
4060 / PC8
4065
4061
HR 340*
HR 341*
MIL-R-93 /
MIL-R-39005 Style
RBR 71
RB 71
RB 70
---
RBR 81
RBR 80
A
Inches (mm)
± 0.032 (± 0.8)
0.312 (7.9)
0.312 (7.9)
0.500 (12.7)
0.375 (9.5)
0.500 (12.7)
0.325 (9.3)
B
Inches (mm)
± 0.025 (± 0.6)
0.250 (6.3)
0.250 (6.3)
0.375 (9.5)
0.250 (6.3)
0.160 (4.0)
0.160 (4.0)
C
Inches (mm)
Minimum
1.0 (25.4)
1.0 (25.4)
1.0 (25.4)
1.0 (25.4)
1.0 (25.4)
1.0 (25.4)
D
Inches (mm)
± 0.002 (± 0.05)
0.025 (0.6)
0.025 (0.6)
0.032 (0.8)
0.025 (0.6)
0.020 (0.5)
0.020 (0.5)
E
Inches (mm)
± 0.010 (± 0.25)
0.200 (5.0)
0.200 (5.0)
0.200 (5.0)
0.200 (5.0)
0.406 (10.3)
0.225 (5.7)
Standard Lead Material - Tinned copper weld
Note:
Optional temperature coefficients available. Consult factory for details.
Figure 1. (Round)
B
Diameter
E
Grid Spacing
Figure 1. (Round)
C - Lead Length
A
Length
E
Grid Spacing
A
Length
C
Lead Length
D
Lead Diameter
B
Diameter
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
RB / RBR, HR / 4000, PC Series Issue November 2010 Sheet 2 of 3
RB / RBR, HR / 4000, PC Series
Radial Lead Precision
Wirewound Resistors
Ordering Data
RBR Product Description
Sample Part No.
Style
Terminal
L = Solderability, U = Weldable
RBR71
L
12601
B
R
Resistance
Example: 12,600 ohms = 12601
Tolerance
T = 0.01%, Q = 0.02%, A = 0.05%, B = 0.1%, C = 0.25%, D = 0.5%
Failure Rate
RB Product Description
Sample Part No.
Style
Terminal
C = Solderable, W = Weldable
RB70
C
12601
B
Resistance
Example: 12,600 ohms = 12601
Tolerance
T = 0.01%, Q = 0.02%, A = 0.05%, B = 0.1%, C = 0.25%, D = 0.5%
Commercial Product Description
(HR / 4000, PC)
Sample Part No.
Style
TCR (ppm)
Omit if Standard
HR340
2
24000
1
LF
Resistance
2.4 kohm (2400 ohm)
Tolerance
T = 0.01%, Q = 0.02%, A = 0.05%, B = 0.1%, C = 0.25%, D = 0.5%
RoHS Indictator
LF = Indicates RoHS compliance
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
RB / RBR, HR / 4000, PC Series Issue November 2010 Sheet 3 of 3
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