RB / RBR, VA / HR, SP / 7000 Series
Axial Lead Precision
Wirewound Resistors
•
•
•
•
•
•
0.1 to 1.0 watts
Tolerance to ±.01%
0.1 ohm to 12 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
The RB/RBR ultra precision resistors are designed and produced for critical parameter applications. They are available
for established reliability military and/or commercial applications requiring state of the art precision and stability.
Construction features may vary slightly between commercial and military styles, but both are produced under the same
rigid quality control system required by the tightest military specifications. Both are produced in the same production
line using the same highly trained operators required to produce the established reliability product.
All terminations are welded to reduce contact noise and thermal EMF. Extensive accelerated aging programs both
before and after calibration assure precise initial accuracy and high resistance stability.
Encapsulation is accomplished by a unique dry air chamber epoxy shell technique for established reliability parts. A
resilient inner coating is used to minimize internal stresses on all parts.
All resistors (military and commercial) are carefully monitored during assembly, winding, coating, and stabilization
procedures to assure high quality standards. Premium grade selected wire is control- stress wound on special designed
bobbins. Established reliability military parts are then burned in for 100 hours at 125°C ambient as part MIL-R-93, or
equivalent, of group A acceptance testing. Documentation and special tests are available upon customer request to
meet your unique requirements.
TCR and Temperature Data
Style
All
Styles
Resistance Range (Ω)
0.1 - 0.9
1.0 - 9.9
10 - 99.9
100 - 12M
Absolute TCR (ppm/°C)
±90
±30
±15
±10
-65 to +145
Operating Temperature Range (°C)
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.
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, VA/HR,
SP/ 7000 Series Issue August 2011 Sheet 1 of 4
RB / RBR, VA / HR, SP / 7000 Series
Axial Lead Precision
Wirewound Resistors
Electrical Data
Wattage
Style
IRC
Style
Shallcross
Style
Mil
125°C
MIL-R-93
RB52
RB53
RB54
RB55
RB56
RBR52
MIL-R-39005
RBR53
RBR54
RBR55
RBR56
---
SUBMINIATURES
---
---
---
---
7040
7030
7020
7010
7009
HR36
HR34
HR14
HR12
HR10
7004
7005
7006
7007
---
VA36
VA34
VA14
VA12
VA10
---
---
---
---
---
---
SP41
---
SP21
SP42
0.50
0.33
0.25
0.15
0.125
0.50
0.33
0.25
0.15
0.125
---
---
---
---
---
Comm
85°C
1.00
0.66
0.50
0.33
0.250
1.00
0.66
0.50
0.30
0.250
0.05
0.10
0.10
0.250
0.125
Min
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
---
---
---
---
---
Resistance (ohms)
Mil
Max
1M
604K
226K
176K
127K
1.2M
1.1M
526K
332K
220K
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---
---
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Comm
Max
12M
8M
4.4M
3M
1.4M
3M
3M
2M
1M
840K
250K
300K
350K
700K
200K
Max.
Working
Voltage
(Comm.)
750
500
300
300
200
750
500
300
300
200
150
150
200
300
200
*For all styles, commercial ratings may be applied at 125°C provided 175°C max. Operating temperature is permissible.
NOTE: Contact factory for availablility of other styles and sizes of above product.
**Customer must specify TCR required.
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,
VA/HR,
SP/ 7000 Series Issue August 2011 Sheet 2 of 4
RB / RBR, VA / HR, SP / 7000 Series
Axial Lead Precision
Wirewound Resistors
Ordering Data
RBR Product Description
Sample Part No.
Style
Terminal
RBR52
L
12601
B
R
L = Solderability, U =
Weldable
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
RB52
C
E
12601
B
C = Solderable, W = Weldable
TCR Code
E = Standard
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
(VA / HR, SP / 7000)
Sample Part No.
Style
TCR (ppm)
VA10
2
24000
1
LF
Omit if Standard
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,
VA/HR,
SP/ 7000 Series Issue August 2011 Sheet 4 of 4
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