Surface Mount
Resistor
Wrap-around
terminations for
soldering
CR Series
Organic Protection
Tin/lead Solder
• 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
Electrical Data
Power
Operating
Temp.
Range
(°C)
Resistance Range (ohms)
Limiting
Element
Voltage
(volts)
Thermal
Impedance**
(°C/watt)
Rating
TCR -55°C to
+125°C
(ppm/°C)
IRC
at
Values
Type
5%
Tol.
2%
1%
0.5%
Tol.
0.25%
Tol.
70°C
(watts)
Tol.
Tol.
<10Ω 350;
10 to 100Ω
200; 100 to
1MΩ 100:
>1MΩ 250
CR0805
CR1206
0.1
1-100M 1-50M 1-20M
1-100M 1-50M 1-20M
1-10M 100-1M
1-10M 100-1M
100
200
360
200
E24 & E96
preferred
(any value to
order)
-55 to 125
0.25
* For 10 devices mounted on 50x25mm p.c.b. area
** Zerohm is available
Contruction:
Thickness:
Thick film resistor material, overglaze and organic protection are screen
printed on a 96% alumina substrate.
Terminations:
The thickness of these devices depend on the size of the chip.
The table below shows the standard substrate thickness used
(mm).
Wrap-around terminations on CR resistors have good ‘leach’ resistance
properties. They will withstand immersion in solder at 260°C for 30
seconds.
STYLE
Planar
0805
0.4
0.4
1206
0.5
0.5
Wrap-around
F = Wrap-around; G = Planar Gold.
Marking:
All relevant information is recorded on the primary package or reel.
Electrical Data
Actual
Requirements
Maximum
Typical
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
∆R%
∆R%
2 (5 above 3M3)
1
0.25
0.1
zero at 125°C
∆R%
∆R%
∆R%
volts
2
1
1
0.25
Temperature rapid change
Resistance to solder heat
0.25
0.25
2.5
Voltage proof
500
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
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 1 of 3