A subsidiary of
TT electronics plc
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.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
SMC SERIES
METAL GLAZETM GENERAL PURPOSE
SURFACE MOUNT, COMPLIANT TERMINAL
· Capped terminals provide mechanical compliance – relief from
board vs component TCE mismatch
· Applications – Ideal for automotive and other
harsh thermal applications
· Uncompromising MetalGlazeTM performance gives
excellent surge performance
· Lead-free, RoHS compliant
· Use standard IRC 2512, 3610 solder pads
SMC SPECIFICATIONS:
SMC PERFORMANCE CHARACTERISTICS
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
Maximum Change
As specified
±0.5% +0.01 ohm
±0.25% +0.01 ohm
±0.25%+0.01ohm(R</-100K Ohm
±1%+0.01ohm(R</-100K Ohm
+0.5 +0.01 ohm
±0.25% 0.01 ohm
95% minimum coverage
±0.5% +0.01 ohm
±0.5% +0.01 ohm
±1% +0.01 ohm
no mechanical damage
±1% + 0.01 ohm
no mechanical damage
Test Method
MIL-PRF-55342E Par 4.7.9 (-55°C +125°C)
MIL-PRF-55342E Par 4.7.3 (-65°C +150°C, 5 cycles)
MIL-PRF-55342E Par 4.7.4 (-65°C @ working voltage)
MIL-PRF-55342E Par 4.7.5 (2.5 x SQRT (PXR) FOR 5 seconds)
MIL-PRF-55342E Par 4.7.6 (+150°C for 100 hours)
MIL-PRF-55342E Par 4.7.7 (Reflow soldered to board at 260°C for 10 seconds)
MIL-STD-202, Method 208 (245°C 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 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
IRC
Type
SMC-1
SMC-2
Industry
Footprint
2512
3610
Size
Code
F
H
Maximum
Power Rating
1W @ 70°C
2W @ 70°C
Maximum
Voltage
650
1000
Working
Voltage
350
500
Resistance
Range (Ω)
0.1 to 0.99
1.0 to 2.0M
20 to 348K
0.1 to 0.99
1 to 2.0M
Tolerance
(±%)
1,2,5
1,2,5
0.5,1,2,5
1,2,5
1,2,5
TCR
(ppm/°C)
100
50,100
50, 100
100
50,100
Product
Category
Low range
Standard
Tight Tolerance
Low Range
Standard
A subsidiary of
TT electronics plc
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.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
Product Dimensions
SMC Temperature vs Power Derating
L
(Product Length)
C
(Termination Width)
W
(Product Width = Diameter)
INDUSTRY
FOOTPRINT
IRC
TYPE
2512
3610
SMC-1
SMC-2
0.250 ± 0.010
(6.35 ± 0.25)
0.367 ± 0.010
(9.32 ± 0.25)
0.080 ± 0.010
(2.04 ± 0.25)
0.080 ± 0.010
(2.04 ± 0.25)
0.122 ± 0.003
(3.10 ± 0.08)
0.122 ± 0.003
(3.10 ± 0.08)
A subsidiary of
TT electronics plc
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.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
SMC Surge Capability Data
PACKAGING CODE
(7 = 7” Reel, 13 = 13” Reel)
HOW TO ORDER:
Sample Part No.:
SMC1 100 2003 FLF 13
IRC Type
(SMC1 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
TOLERACNE, LEAD FREE DESIGNATION
(C= ±0.25%, D= ±0.5%, F= ±1.0%, G=2.0%, J= ±5.0%)
LF provides clear “Lead Free” Designation
Ordering Data