High Value
Surface Mount Resistor
Wrap-around
terminations for
soldering
Organic Protection
HR Series
•
100M ohms to 50G ohms
•
Low voltage coefficient of resistance
Tin/lead Solder
Thick Film Conductor
Nickel
Electrical Data
IRC Type
Resistance Range
(ohms)
(measured at 10 volts)
100M to 50G
100M to 50G
100M to 50G
Limiting
Element
Voltage
(volts)
100
150
200
Operating
Temp.
Range (°C)
-55 to +125
-55 to +125
-55 to +125
TCR (ppm/°C)
(measured at 10 volts)
0 to -2000
0 to -1500
0 to -1000
100M to 1G: 5, 10
>1G to 50G: 25, 50
Resistance Tolerance
(%)
0805
1005
1206
Power Rating:
The high resistance value of these devices is such that power dissipation is always small. The rating is therefore determined by voltage considerations
only, as shown in the table above.
Thickness:
Contruction:
The thickness of these devices depend on the size of the chip.
The resistor material is screen printed onto a 96% alumina substrate and
The table below shows the standard substrate thickness used
covered with a protection comprising of a glaze followed by an organic
(mm).
coating. This construction gives an insulated device.
Terminations:
Wrap-around terminations on HR resistors have good ‘leach’ resistance
STYLE
0805
1005
1206
properties. They will withstand immersion in solder at 260°C for 30
Planar
0.4
0.63
0.5
seconds.
Wrap-around
0.4
N/A
0.5
Marking:
All relevant information is recorded on the primary package or reel.
F = Wrap-around; G = Planar Gold.
Environmental Data
Actual
Maximum
Load at rated power: 1000 hours at 70°C
Shelf life: 12 months at room temperature
Dry heat: 1000 hrs at 125°C
Temperature rapid change
Change on Wave Soldering
Voltage proof
Voltage coefficient of resistance
(10V - 25V)
∆R%
∆R%
∆R%
∆R%
∆R%
volts
%volts
0805
1005
1206
1.0
0.8
0.2
0.4
0.5
0.05
2
2
2
1
1
100
Typical
1
1
0.5
0.3
0.5
200
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
HR Series Issue October 2008 Sheet 1 of 2
High Value
Surface Mount Resistor
Physical Data
Planar Terminations
C
C
Res
ist
On T or
op
Face
T
Res
ist
On T or
op
Face
Wrap
Around
Terminations
(3 Faces)
T
A
L
W
B
L
A
W
Dimensions (Inches and (mm))
Style
0805
1005
1206
L
.079 ± .012
(2.0 ± 0.3)
.098 ± .012
(2.5 ± 0.3)
.126 ± .016
(3.2 ± 0.4)
W
.049 ± .008
(1.25 ± 0.2)
.049 ± .008
(1.25 ± 0.2)
.063 ± .008
(1.6 ± 0.2)
T
.027
(.07)
.027
(.07)
.027
(.07)
Wrap-around
A
.012 ± .006
(0.3 ± 0.15)
B*
.035
(0.9min)
Planar
C
.012 ± .004
(0.3 ± 0.1)
.016 ± .006
(0.4 ± 0.15)
.016 ± .006
(0.4 ± 0.15)
Weight (g)
0.009
0.015
0.020
not available
.016 ± .008
(0.4 ± 0.2)
.067
(1.7min)
* This dimension determines the number of conductors which may pass under the surface mounted device.
APPLICATION NOTES:
Mounting
This chip resistor is ideally suited for handling by automatic methods due to its rectangular shape and the small dimensional tolerances. Electrical
connection to a ceramic substrate or to a printed circuit board can be made by reflow soldering of wrap-around terminations. The ‘F’ terminations
provide good leach properties and ensure reliable contact. Due to the robust construction, the resistor chip can be immersed completely in the solder
bath for 30 seconds at 260°C. This enables the resistor to be mounted on one side of a printed circuit board and other wire-leaded components on
the other side. The presence of moisture will not damage the resistor in any way.
Ordering Data
Specify type, reference, etc. as indicated in this example of a HR0805F 100M ohms K resistor with wrap-around
terminations and packed in a waffle pack. 1005 is available in Waffle Pack only.
Sample Part No.
IRC Type
CR
HR
0805
F
100M
J
W
Style
0805, 1005, 1206
Termination
F = Wrap Around, P = Planar Gold
Resistance Value (EIA 4-digit code)
(100Ω and greater - First 3 significant digits plus 4th digit multiplier)
Example: 100Ω = 1000; 1000Ω = 1001, 150,000Ω = 1503
(Less than 100Ω - "R" is used to designate decimal)
Example: 51Ω = 51R0; 1Ω = 1R00; 0.25Ω = R250
Tolerance
K = 10%; S = 25%; Y = 50%
Packaging
T = Tape Pack (3K per Reel), W = Waffle Pack
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
HR Series Issue October 2008 Sheet 1 of 2
RF/Wirelessly
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