High Reliability
Surface Mount Resistor
MCHP Series
• DESC Approved
• Excellent surge capability
™
Metal Glaze thick
film element fired
at 1000°C to solid
ceramic substrate
• Reliable Metal Glaze™ technology
• Superb solderability - reflow and wave
• Operating temperature -55°C to +150°C
• Minimum board real estate requirements
• Established SPC and continuous improvement programs
High
temperature
dielectric
coating
Solder over nickel
barrier
The MCHP High Reliability Surface Mount Resistors are part
The MCHP High Reliability Surface Mount Resistors are in compli-
of the RG product family of precision resistors developed by ance to DESC drawings 85083 (MCHP 1/8) and 87037 (MCHP 1)
IRC in 1960 to meet the stringent demands of the military and are supplied in accordance tot he requirements of MIL-R-55342.
market. In leaded form, these resistors are qualified to level Under this specification, all resistors are subjected to "Thermal
S under MIL-R-39017 and MIL-R-55182. The MCHP resistor Shock". Samples are selected from each lot and tested to "TCR",
utilizes the core element from this series, but with modified "STOL", "Terminal adhesion", "Solderability", and "Visual" to ensure
contacts and encapsulation.
the lot is in conformance to specified requirements.
Electrical Data
Size
Industry
IRC
Type
DESC
Drawing
Rated Power² Working Maximum
Resistance
Range (ohms)
Tolerance
(±%)
TCR
(ppm/°C)
Code¹ Footprint
(watts)
Voltage³
Voltage
B
D
F
1206
2010
2512
3610
MCHP 1/8
MCHP 1/2
MCHP 1
950114
94048
950065
94047
0.125 @ 70°C
0.5 @ 70°C
1.0 @ 70°C
2.0 @ 25°C
200
300
350
500
400
600
0.1 to 1.0M
0.1 to 1.6M
0.1 to 2.2M
0.2 to 2.2M
1, 2, 5
1, 2, 5
1, 2, 5
1, 2, 5
100
100
100
100
700
H
MCHP 2
1000
³
¹ See page 8 for product dimensions, recommended solder pads, and standard packaging. ² For operation above 70°C, use power derating curve. Not to exceed √ P x R
4 Formerly 85083 5 Formerly 87037
Power Derating Curve
120
100
80
60
40
20
0
25 35 45 55 65 75 85 95 105 115 125 135 145
30 40 50 60 70 80 90 100 110 120 130 140 150
Ambient Temperature (°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
© IRC 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
MCHP Series Issue September 2008 Sheet 1 of 2