Metal Glaze™ General Purpose
Surface Mount Power Resistor
™
Metal Glaze thick
film element fired
at 1000°C to solid
ceramic substrate
MM Series
• Up to 2 watts
• Up to 1000 volts
High
• 0.1 ohm to 2.2 megohm range
• 150°C maximum operating temperature
temperature
dielectric
coating
60/40 Solder
over nickel barrier
Electrical Data
Maximum
Power
Rating
Resistance
Range
(ohms)
Size
Industry
IRC
Working
Voltage²
Tolerance
(+%)³
TCR
(ppm/°C)³
Product
Category
Code Footprint
Type
0.1 to 0.99
1.0 to 1.0M
20 to 348K
0.1 to 0.99
1.0 to 2.21M
20 to 348K
0.1 to 0.99
1.0 to 2.21M
1, 2, 5
1, 2, 5
100
Low Range
Standard
B
1206
MMA0204
1/2
400
50, 100
50, 100
100
0.25, 0.5
1, 2, 5
Tight Tolerance
Low Range
Standard
F
2512
3610
MMB0207
MMC0310
1
2
700
1, 2, 5
50, 100
50, 100
100
0.25, 0.5
1, 2, 5
Tight Tolerance
Low Range
Standard
H
1000
1, 2, 5
50, 100
¹Not to exceed √P x R ²Consult factory for tighter TCR, tolerance, or resistance values.
Environmental Data
Characteristics
Maximum Change
Test Method
Temperature Coefficient
As specified
MIL-R-55342E Par 4.7.9 (-55°C +125°C)
Thermal Shock
0.5ꢀ +0.01Ω
0.25ꢀ +0.01Ω
MIL-R-55342E Par 4.7.3 (-65°C +150°C, 5 cycles)
MIL-R-55342E Par 4.7.4 (-65°C @ working voltage)
Low Temperature Operation
MIL-R-55342E Par 4.7.5
0.5ꢀ +0.01Ω
1ꢀ for R>100KΩ
Short Time Overload
2.5 x √P x R for 5 seconds
High Temperature Exposure
Resistance to Bonding Exposure
Solderability
0.5ꢀ +0.01Ω
0.25ꢀ +0.01Ω
MIL-R-55342E Par 4.7.6 (+150°C for 100 hours)
MIL-R-55342E Par 4.7.7 (Reflow soldered to board at 260°C for 10 seconds)
95ꢀ minimum coverage MIL-STD-202, Method 208 (245°C for 5 seconds)
Moisture Resistance
Life Test
0.5ꢀ +0.01Ω
0.5ꢀ +0.01Ω
1ꢀ +0.01Ω
MIL-R-55342E Par 4.7.8 (10 cycles, total 240 hours)
MIL-R-55342E Par 4.7.10 (2000 hours @ 70°C intermittent)
1200 gram push from underside of mounted chip for
Terminal Adhesion Strength
Resistance to Board Bending
no mechanical damage 60 seconds
0.5ꢀ +0.01Ω
Chip mounted in center of 90mm long board, deflected 5mm
no mechanical damage so as to exert pull on chip contacts for 10 seconds
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
MM Series Issue March 2009 Sheet 1 of 3