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
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
© IRC Wire and Film Technologies Division
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Metal Glaze™ thick
film element fired
at 1000°C to solid
ceramic substrate
High
temperature
dielectric
coating
Solder over nickel
barrier
High Reliability
Surface Mount Resistor
Electrical Data
MCHP Series
• DESC Approved
• Excellent surge capability
• 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
Size
Code¹
Industry
Footprint
IRC
Type
DESC
Drawing
Rated Power²
(watts)
Working
Voltage³
Maximum
Voltage
Resistance
Range (ohms)
Tolerance
(±%)
TCR
(ppm/°C)
B 1206 MCHP 1/8 9501140.125 @ 70°C 200 400 0.1 to 1.0M 1, 2, 5 100
D 2010 MCHP 1/2 94048 0.5 @ 70°C 300 600 0.1 to 1.6M 1, 2, 5 100
F 2512 MCHP 1 9500651.0 @ 70°C 350 700 0.1 to 2.2M 1, 2, 5 100
H 3610 MCHP 2 94047 2.0 @ 25°C 500 1000 0.2 to 2.2M 1, 2, 5 100
¹ See page 8 for product dimensions, recommended solder pads, and standard packaging. ² For operation above 70°C, use power derating curve. ³ Not to exceed √ P x R
4 Formerly 85083 5 Formerly 87037
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
% of Rated Power
120
100
80
60
40
20
0
Ambient Temperature (°C)
Power Derating Curve
95006, 95011, 94048,
94047
The MCHP High Reliability Surface Mount Resistors are part
of the RG product family of precision resistors developed by
IRC in 1960 to meet the stringent demands of the military
market. In leaded form, these resistors are qualified to level
S under MIL-R-39017 and MIL-R-55182. The MCHP resistor
utilizes the core element from this series, but with modified
contacts and encapsulation.
The MCHP High Reliability Surface Mount Resistors are in compli-
ance to DESC drawings 85083 (MCHP 1/8) and 87037 (MCHP 1)
and are supplied in accordance tot he requirements of MIL-R-55342.
Under this specification, all resistors are subjected to "Thermal
Shock". Samples are selected from each lot and tested to "TCR",
"STOL", "Terminal adhesion", "Solderability", and "Visual" to ensure
the lot is in conformance to specified requirements.
MCHP Series Issue September 2008 Sheet 1 of 2
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
© IRC Wire and Film Technologies Division
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
IRC Advanced Film Division
Environmental Data
Size
Code¹
Industry
Footprint
IRC
Type
DESC
Drawing
Rated Power²
(watts)
Working
Voltage³
Maximum
Voltage
Resistance
Range (ohms)
Tolerance
(±%)
TCR
(ppm/°C)
B 1206 MCHP 1/8 9501140.125 @ 70°C 200 400 0.1 to 1.0M 1, 2, 5 100
D 2010 MCHP 1/2 94048 0.5 @ 70°C 300 600 0.1 to 1.6M 1, 2, 5 100
F 2512 MCHP 1 9500651.0 @ 70°C 350 700 0.1 to 2.2M 1, 2, 5 100
H 3610 MCHP 2 94047 2.0 @ 25°C 500 1000 0.2 to 2.2M 1, 2, 5 100
¹ See page 8 for product dimensions, recommended solder pads, and standard packaging. ² For operation above 70°C, use power derating curve. ³ Not to exceed √ P x R
4 Formerly 85083 5 Formerly 87037
Characteristics Maximum Change Test Method
Temperature Coefficient ±100 ppm/°C MIL-R-55342E Par 4.7.9 (-55°C + 125°C)
Thermal Shock ±0.5% + 0.01 ohm MIL-R-55342E Par 4.7.3 (-65°C + 150°C, 5 cycles)
Low Temperature Operation ±0.25% + 0.01 ohm MIL-R-55342E Par 4.7.4 (-65°C @ working voltage)
Short Time Overload ±0.25% + 0.01 ohm
±1% for R>100K ohm
MIL-R-55342E Par 4.7.5
2.5 x P x R for 5 seconds
High Temperature Exposure ±0.5% + 0.01 ohm MIL-R-55342E Par 4.7.6 (+150°C for 100 hours)
Resistance to Bonding Exposure ±0.25% + 0.01 ohm MIL-R-55342E Par 4.7.7 (Reflow soldered to board at 260°C for 10 sec-
onds)
Solderability 95% minimum coverage MIL-STD-202, Method 208 (245°C for 5 seconds)
Moisture Resistance ±0.5% 0.01 ohm MIL-R-55342E Par 4.7.8 (10 cycles, total 240 hours)
Life Test ±0.5% 0.01 ohm MIL-R-55342E Par 4.7.10 (2000 hours at 70°C intermittent)
Terminal Adhesion Strength ±1% + 0.01 ohm
no mechanical damage 1200 gram push from underside of mounted chip for 60 seconds
Resistance to Board Bending ±1% + 0.01 ohm
no mechanical damage
Chip mounted in center of 90mm long board, deflected 5mm so as to
exert pull on chip contacts for 10 seconds
√
High Reliability
Surface Mount Resistor
Sample Part No.
DESC Drawing Number
(CHP 1/8, CHP 1/2, CHP 1, or CHP 2)
Resistance Value
(100 ohms and greater - First 3 significant digits plus 4th digit multiplier)
Example: 100 ohms = 1000, 1000 ohms = 1001, 150,000 ohms = 1503
(Less than 100 ohms - "R" is used to designate decimal)
Example: 51 ohms = 51R0, 1.6 ohm = 1R60, 0.25 ohms = R250
Tolerance
(F = 1.0%; G = 2.0%; J = 5.0%)
Packaging Code*
(BLK = Bulk, 7 = 7" Reel, 13 = 13" Reel)
Ordering Data
95011 - 2213 - F - 13
MCHP Series Issue September 2008 Sheet 2 of 2
