RES-MCS Datasheet, PDF (1/2 Pages) Ohmite Mfg. Co. – Industrial electronics, power electronics

MCS Series
Metal Element Current Sense
Resistive Metal Alloy mOhm Technology, SMD
F e at u r e s
• NiCu or MnCu resistive alloy; material TCR
±10ppm/°K
• Marking epoxy UL-94-V0 conformal
• 96% alumina substrate thermo dissipation protec-
tive layer
• Cu Terminal Electrode with Pb Free termination
(60% Sn, 40% Ni)
• Flame-retardant epoxy protective coat (UL-94-V0)
• Ultra low resistance value (0.005Ω ~ 0.050Ω)
• Precision resistance alloy (NiCr20AlSi, or CuMnNi);
material selected for low TCR (<50ppm/°C)
• Superior temperature coefficient characteristics;
resistance vs. temp. change from 25°C to 125°C
within 10ppm/°C ~ 50ppm/°C
• Low inductance, low thermo EMF (<50µV/°C)
A p p l i c at i o n s
• Industrial electronics, power electronics: power
supply, DC/DC converter, AC/DC converter, motor
controller, automotive electronics
• Battery charger, PC, PDA, 3C products,
Telecommunications, instruments, white goods

Series
MCS1632
MCS3264
S ERIE S S PE C I F I C ATION S
Power Rating Resistance TCR (ppm/°C)
(@70°C) 5mΩ
10mΩ 15mΩ 20mΩ 25mΩ
1W
<200
<70
<40
<40
<40
2W
<200
<70
<40
<40
<40
30mΩ
<40
<40
40mΩ
<40
<40
50mΩ
<40
<40
c h a r a c t e r i s t i cs
Resistance Range 0.005Ω - 0.05Ω
Color white (top) / green (bottom)
Power 1 and 2 watts at 70°C
Standard resistance 5, 10, 15, 20, 25, 30, 35, 50
values (mΩ)
TCR
±50ppm/°C (two standard series
of temperatures: 25°C, 0°C, -15°C,
-55°C and 25°C, 50°C, 75°C, 125°C,
150°C; temp. tolerance ±3°C; TCR =
(R2-R1)/R1(T2-T1)x10⁶)
Tolerance 1%, 3%, 5%
Rated voltage (PxR)^1/2
Marking
Epoxy UL-94-V0
Conformal
NiCu or MnCu
Resistive Alloy
Material TCR ±10ppm/ϒK
Derating
100
80
60
40
20
0
-55
0
50 70 100
Ambient Temperature, oC
96% Alumina Substrate
Thermo-dissipation
Protective Layer
Cu Electrode
Pb-free Termination
Flame-retardant Epoxy
Protective Coat
Recommended
Solder Profile
300
Soldering
10 sec.
250
200 _Preheating
120 sec.
150
60 sec.
Cooling
100
50
0
150
0 50 100 150 200 250
Time (sec.)
Preheating: 145°C ±15°, max. 120 sec.
Soldering: min. 220°C, max. 60 sec.
Max. Temp.: 260°C ±5°, 10 sec.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax [phone] • www.ohmite.com • [e-mail]
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