Surface Mount
Resistor
CR Series
•
0 ohm available
•
Shorting links available
•
1.0 ohms to 100M ohms
•
Tolerance down to 0.25%
•
Solder terminations have a nickel barrier layer
•
Any resistance value available within specified range
Thick Film Conductor
Nickel
Organic Protection
Tin/lead Solder
Wrap-around
terminations for
soldering
Electrical Data
IRC
Type
Power
Rating
at
70°C
(watts)
0.1
Resistance Range (ohms)
5%
Tol.
1-100M
2%
Tol.
1-50M
1%
Tol.
1-20M
0.5%
Tol.
1-10M
0.25%
Tol.
100-1M
Limiting
Element
Voltage
(volts)
TCR -55°C to
+125°C
(ppm/°C)
<10Ω 350;
CR0805
100
10 to 100Ω
200; 100 to
CR1206
0.25
1-100M
1-50M
1-20M
1-10M
100-1M
200
1MΩ 100:
>1MΩ 250
* For 10 devices mounted on 50x25mm p.c.b. area
** Zerohm is available
Values
Thermal
Impedance**
(°C/watt)
Operating
Temp.
Range
(°C)
E24 & E96
preferred
(any value to
order)
360
-55 to 125
200
Contruction:
Thick film resistor material, overglaze and organic protection are screen
printed on a 96% alumina substrate.
Terminations:
Wrap-around terminations on CR resistors have good ‘leach’ resistance
properties. They will withstand immersion in solder at 260°C for 30
seconds.
Marking:
All relevant information is recorded on the primary package or reel.
Thickness:
The thickness of these devices depend on the size of the chip.
The table below shows the standard substrate thickness used
(mm).
STYLE
0805
1206
Planar
0.4
0.5
Wrap-around
0.4
0.5
F = Wrap-around; G = Planar Gold.
Electrical Data
Requirements
Load at rated power: 1000 hours at 70°C
Shelf life: 12 months at room temperature
Derating from rated power at 70°C
Long term damp heat
Temperature rapid change
Resistance to solder heat
Voltage proof
∆R%
∆R%
∆R%
volts
∆R%
∆R%
zero at 125°C
2
1
2.5
1
0.25
0.25
500
0.25
2 (5 above 3M3)
Actual
Maximum
1
Typical
0.25
0.1
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
CR Series Issue March 2009 Sheet 1 of 3
Surface Mount
Resistor
Physical Data
Planar Terminations
C
C
Wrap
Around
Terminations
(3 Faces)
T
A
Res
ist
On T or
op
Face
Res
istor
On T
op
Face
T
B
L
L
W
A
W
Dimensions (Inches and (mm))
Style
0805
1206
L
.079 ± .012
(2.0 ± 0.3)
.126 ± .016
(3.2 ± 0.4)
W
.049 ± .008
(1.25 ± 0.2)
.063 ± .008
(1.6 ± 0.2)
T
.027
(.07)
.027
(.07)
Wrap-around
A
.012 ± .006
(0.3 ± 0.15)
.016 ± .008
(0.4 ± 0.2)
B*
.035
(0.9min)
.067
(1.7min)
Planar
C
.012 ± .004
(0.3 ± 0.1)
.016 ± .006
(0.4 ± 0.15)
Weight (g)
0.009
0.020
* 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. Electri-
cal connection to a ceramic substrate or to a printed circuit board can be made by reflow soldering of wrap-around terminations (e.g. suffix ‘F’ in
CR0805F). 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.
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
CR Series Issue March 2009 Sheet 2 of 3
Surface Mount
Resistor
Ordering Data
Specify type, reference, etc. as indicated in this example of a CR0805F 8.2M ohms 5% resistor with wrap-around
terminations and packed in a plastic bag.
Sample Part No.
IRC Type
CR
CR
0805
F
1005
J
T
Style
0805, 1206
Termination
F = Wrap Around, P = Planar
Resistance Value (EIA 4-digit code)
(≥100Ω - First 3 significant digits plus 4th digit multiplier)
Example: 100Ω = 1000; 1000Ω = 1001, 150,000Ω = 1503
(>100Ω - "R" is used to designate decimal)
Example: 51Ω = 51R0; 1Ω = 1R00; 0.25Ω = R250
Tolerance
F = 1.0%; G = 2.0%; J = 5.0%
*Packaging
T = Tape Pack (8mm tape)
*The preferred methods of packaging are:
Gold terminated chips are packed in waffle boxes, chips with wrap-around
terminations are supplied tape & reel on .8mm tape.
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
CR Series Issue March 2009 Sheet 3 of 3
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