SMC Series
Cylindrical Surface Mount Metal Glaze
™
Compliant Terminal Resistors
IRC Wire and Film Technologies Division
•
Capped terminals provide mechanical compliance-relief
from board vs. component TCE mismatch
•
Ideal for automotive and other harsh thermal applications
•
Uncompromising Metal Glaze
™
performance gives excellent surge performance
•
Uses standard IRC 2512, 3610 solder pads
•
Lead free, RoHS compliant
Specifications
IRC Type
Size
Code
F
H
Industry
Standard
Footprint
2512
3610
Power
Rating @70°C
(Watts)
1.0
2.0
Resistance
Range
(Ohms)
10 - 1M
10 - 2M
Tolerance
(±%)
1
1, 2, 5
1, 2, 5
TCR
(±ppm/°C)
100
100
Operating
Voltage
(V)
350
500
Maximum
Voltage
(V)
650
1000
SMC-1
SMC-2
Notes:
1
For tolerances below ±1%, please contact factory.
Environmental Performance
Characteristics
Temperature Coefficient
Thermal Shock
Low Temperature Operation
Short Time Overload
High Temperature Exposure
Resistance to Bonding
Solderability
Moisture Resistance
Life Test
Terminal Adhesion Strength
Resistance to Board
Bending
Operating temperature
Maximum Change
As specified
±0.5% +0.01Ω
±0.25% +0.01Ω
±0.25% +0.01Ω (R</-100KΩ)
±1% +0.01(R</-100KΩ)
±0.25% +0.01Ω (R</-100KΩ)
±1% +0.01(R</-100KΩ)
±0.25% 0.01Ω
95% minimum coverage
±0.5% +0.01Ω
±0.5% +0.01Ω
±1% +0.01
no mechanical damage
±1% +0.01
no mechanical damage
Test Method
MIL-PRF-55342E Par 4.7.9
(-55ºC +125ºC)
MIL-PRF-55342E Par 4.7.3
(-65ºC +150ºC)
MIL PRF-55342E Par 4.7.4
(-65ºC @ working voltage)
MIL-PRF-55342E Par 4.7.5
(2.5 x sq. rt.(PxR) for 5 seconds)
MIL-PRF-55342E Par 4.7.6
(+150ºC for 100 hours)
MIL-PRF-55342E Par 4.7.7
(Reflow soldered to board at 260ºC for 10 seconds)
MIL-STD-202, Method 208
(245ºC for 5 seconds)
MIL-PRF-55342E Par 4.7.8
(10 cycles, total 240 hours)
MIL-PRF-55342E Par 4.7.10
(2000 hour at 70ºC 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
-55ºC to +150ºC
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 printing.
© IRC Wire and Film Technologies Division
• 736 Greenway Road Boone, North Carolina 28607-1860
Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com
A subsidiary of
TT electronics plc
SMC Series Issue November 2007
SMC Series
Cylindrical Surface Mount Metal Glaze
™
Compliant Terminal Resistors
IRC Wire and Film Technologies Division
Dimensions (mm)
L
C
W
Industry
Footprint
2512
3610
IRC type
SMC-1
SMC-2
L
(Length)
0.250 ± 0.010
(6.35 ± 0.25)
0.367 ± 0.010
(9.32 ± 0.25)
W
(Width/Diameter)
0.122 ± 0.003
(3.10 ± 0.08)
0.122 ± 0.003
(3.10 ± 0.08)
C
(Termination Width)
0.060 ± 0.010
(1.50 ± 0.25)
0.060 ± 0.010
(1.50 ± 0.25)
Performance Curves
SMC Power Derating Curve
120%
100%
Percent of Rated Power
80%
SMC-1
60%
40%
20%
0%
25
35
45
55
65
75
85
95
105
115
125
135
145
Ambient Temperature (C)
SMC-2
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 printing.
© IRC Wire and Film Technologies Division
• 736 Greenway Road Boone, North Carolina 28607-1860
Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com
A subsidiary of
TT electronics plc
SMC Series Issue November 2007
SMC Series
Cylindrical Surface Mount Metal Glaze
™
Compliant Terminal Resistors
IRC Wire and Film Technologies Division
SMC Surge Capabilities
SMC Series Surge Capability for
Non-repetitive or Low Repetition Rate Surges
10,000
Peak Power (Watts)
1,000
100
10
1
1.0E-04
1.0E-03
1.0E-02
Surge or Pulse Duration (Seconds)
1.0E-01
1.0E+00
SMC-2
SMC-1
Ordering Information
Sample Part No.
IRC Type
(SMC 1 or SMC 2)
Temperature Coefficient
(50 or 100 PPM)
Resistance Value
(First 3 significant figures plus fourth digit multiplier)
Example: 2203 = 220 K Ohm
51R0 = 51 Ohm
R200 = 0.2 Ohm
Tolerance
C = ±0.25%, D = ±0.5%,
F = ±1.0%, G = ±2.0%, J= ±5.0%
LF
Provides clear “Lead Free” Designation
Packaging Code
(7 = 7” Reel, 13 = 13” Reel)
SMC1 100 2003
F
LF
13
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 printing.
© IRC Wire and Film Technologies Division
• 736 Greenway Road Boone, North Carolina 28607-1860
Telephone: 828 264 8861 • Facsimile: 828 264 8866 • Website: www.irctt.com
A subsidiary of
TT electronics plc
SMC Series Issue November 2007
