Metal Glaze
™
General Purpose
Surface Mount Power Resistor
MM Series
•
Up to 2 watts
•
Up to 1000 volts
•
0.1 ohm to 2.2 megohm range
•
150°C maximum operating temperature
60/40 Solder
over nickel barrier
High
temperature
dielectric
coating
Metal Glaze™ thick
film element fired
at 1000°C to solid
ceramic substrate
Electrical Data
Size
Code
Industry
Footprint
IRC
Type
Maximum
Working
Power
Voltage²
Rating
1/2
400
Resistance
Range
(ohms)
0.1 to 0.99
B
1206
MMA0204
1.0 to 1.0M
20 to 348K
0.1 to 0.99
F
2512
MMB0207
1
700
1.0 to 2.21M
20 to 348K
H
3610
MMC0310
2
1000
0.1 to 0.99
1.0 to 2.21M
Tolerance
(+%)³
1, 2, 5
1, 2, 5
0.25, 0.5
1, 2, 5
1, 2, 5
0.25, 0.5
1, 2, 5
1, 2, 5
TCR
(ppm/°C)³
100
50, 100
50, 100
100
50, 100
50, 100
100
50, 100
Product
Category
Low Range
Standard
Tight Tolerance
Low Range
Standard
Tight Tolerance
Low Range
Standard
¹Not to exceed
√
P x R
²Consult factory for tighter TCR, tolerance, or resistance values.
Environmental Data
Characteristics
Temperature Coefficient
Thermal Shock
Low Temperature Operation
Short Time Overload
High Temperature Exposure
Resistance to Bonding Exposure
Solderability
Moisture Resistance
Life Test
Terminal Adhesion Strength
Maximum Change
As specified
±0.5% +0.01Ω
±0.25% +0.01Ω
±0.5% +0.01Ω
±1% for R>100KΩ
±0.5% +0.01Ω
±0.25% +0.01Ω
Test Method
MIL-R-55342E Par 4.7.9 (-55°C +125°C)
MIL-R-55342E Par 4.7.3 (-65°C +150°C, 5 cycles)
MIL-R-55342E Par 4.7.4 (-65°C @ working voltage)
MIL-R-55342E Par 4.7.5
2.5 x
√
P x R for 5 seconds
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)
95% minimum coverage MIL-STD-202, Method 208 (245°C for 5 seconds)
±0.5% +0.01Ω
±0.5% +0.01Ω
±1% +0.01Ω
no mechanical damage
±0.5% +0.01Ω
no mechanical damage
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
60 seconds
Chip mounted in center of 90mm long board, deflected 5mm
so as to exert pull on chip contacts for 10 seconds
Resistance to Board Bending
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
MM Series Issue March 2009 Sheet 1 of 3
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
Metal Glaze
™
General Purpose
Surface Mount Power Resistor
Physical Data
L
C
W
Size Code
B
F
H
Industry
Footprint
1206
2512
3610
Dimensions (Inches and (mm)
Actual Size
L
0.128 ± 0.007
(3.25 ± 0.18)
0.251 ± 0.010
(6.38 ± 0.25)
0.367 ± 0.010
(9.32 ± 0.25)
W
0.057 ± 0.006
(1.45 ± 0.15)
0.079 ± 0.006
(2.01 ± 0.15)
0.105 ± 0.006
(2.67 ± 0.15)
C*
0.020 ± 0.010
(0.51 ± 0.25)
0.040 ± 0.010
(1.02 ± 0.25)
0.050 ± 0.010
(1.27 ± 0.25)
*C dimension is average termination width.
Recommended Solder Pad Dimensions (Reflow):
F
A
C
A
B
E
D
Size
Code
B
F
H
Industry
Footprint
1206
2512
3610
Dimensions (Inches and mm))
A
0.076
(1.93)
0.121
(3.07)
0.170
(4.32)
B
0.093
(2.36)
0.126
(3.20)
0.160
(4.06)
C
0.058
(1.47)
0.127
(3.23)
0.213
(5.41)
D
0.098
(2.49)
0.183
(4.65)
0.273
(6.93)
E
0.032
(0.81)
0.040
(1.02)
0.044
(1.12)
F
0.211
(5.36)
0.369
(9.37)
0.553
(14.05)
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 2 of 3
Metal Glaze
™
General Purpose
Surface Mount Power Resistor
Standard Reel Packaging per EIA-481:
Size
Code
B
F
H
Industry
Footprint
1206
2512
3610
Reel
Diameter*
7″
13″
7"
13″
13″
Quantity
Per Reel
2,500 max.
10,000 max.
1,500 max.
5,000 max.
1,500 max.
Carrier Tape
Width
8mm
12mm
24mm
Component
Pitch
4mm
4mm
4mm
*The 13″ reel is considered standard and will be supplied unless otherwise specified.
Power Derating Curve
120
Repetitive Surge Curve
1000
Percent Relative Power
100
Peak Power (watts)
1/8, 1/2, 1
80
60
1
2
100
2
40
20
0
1/2
1/8
10
30 40
50
60
70 80
90 100 110 120 130 140 150
1
0.0001
.1msec
0.0010
1msec
0.0100
10msec
0.1000
100msec
1.0000
10000msec
Ambient Temperature (°C)
Surge or Pulse Duration (seconds)
Note: Use for repetitive pulses where the average power dissipation is not to exceed
the component rating at 70C. Surge handling capacity for low-repetitive surges may
be significantly greater than shown above. Contact factory for recommendations.
Ordering Data
Sample Part No.
IRC Type
(MMA0204, MMB0207, MMC0310)
MMA0204
50
2203
F
13
Temperature Coefficient
50 = ±50 ppm/°C; 100 = ±100 ppm/°C
Note:
RoHS compliance is noted by inserting “LF”
into the part number immediately following the
tolerance designator. RoHS compliant metalli-
zation is 96.5% Sn / 3% Ag / 0.5% Cu. RoHS-
compliant product is NOT backwards compat-
ible to Sn/Pb soldering environments.
Resistance Value
(100 ohms and greater - First 3 significant figures 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 ohm = 1R00, 0.25 ohm = R250
Tolerance
(D = 0.5%, F = 1.0%)
Packaging Details
(BLK = Bulk, 7 = 7" Reel, 13 = 13" Reel)
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 3 of 3
PCB设计
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
